Connection or welding of metal objects by means of electromagnetic fields

 

(57) Abstract:

The inventive two workpieces together or weld between themselves by encouraging movement in the first two blanks or parts by pulsed magnetic force, allowing the first workpiece or part thereof faces the second of the two workpieces and the two are joined or welded together, while the value of pulsed magnetic treatment pressure set on the basis of conditions for the kinetic energy of the at least one of the solid parts before collision is equal to or greater than the amount of energy of plastic deformation of at least one of the solid parts and the energy of elastic deformation of at least two solid parts after a collision. The method can be used for workpieces of various shapes and of various materials. Through the use of the invention expand the technological capabilities and improving the quality of the connection parts. 10 C. p. F.-ly, 22 ill.

The invention relates in General to the processing of metals, and in particular to a method and apparatus for processing metal workpieces. In particular, the present invention relates to a method and apparatus for amrabat of the invention and description of the prior art

Pulsed magnetic pressure treatment is a method comprising the message via a pulse magnetic field of the metal billet quick movement, which causes the workpiece to be deformed. One advantage of the method of pulsed magnetic treatment pressure is that the energy loss in this process is minimal and, therefore, there is no or very little heating of the workpiece. In addition, this method has no lack associated with residual dents from the instrument, as is the case with many other technologies (see article M Kennewick "Magnetic pressure treatment of metals under the action of the inverse electromagnetic forces" in proceedings of the Proceedings of the Forth IEEE Pulse Power Conference, Institute of Electrical and Electronic Engineering, 1983).

In the method of pulsed magnetic treatment pressure to create a strong magnetic field is used capacitor or capacitor Bank, the solenoid generating a magnetic field, and often the driver field. A very strong magnetic field required for the process of pulsed magnetic treatment pressure is the result of a very rapid discharge of electrical energy accumulated in the capacitor, in solignano repulsion between the workpiece and the solenoid, generating a magnetic field, which induces a deformation of the workpiece.

When the surface of the workpiece is moving under the influence of the repulsive forces, it absorbs energy from the magnetic field. In order to encourage the use of energy to handle pressure and to reduce the loss of energy due to its penetration into the material of the workpiece (which causes a loss of energy to the resistive heating), magnetic pulse forming make very short. In most cases, the application of pulsed magnetic treatment by pressure pulses have a duration from about 10 μs to about 250 μs (duration of the first wave of the discharge current).

Descriptions of devices and methods corresponding to the prior art, treatment of metallic workpieces by means of pulsed magnetic treatment pressure is provided in the following U.S. patents: N 3654787 issued to Brauer, N 3961739 issued to Lefteris, N 4170887 issued Baranov, N 4531393 issued to Weiru, N 4807351, issued to Berg and others N 5353617 issued Ceriano etc. and N 5442846 issued to Snaipery.

Closest to the claimed is a method for joining or welding of metal objects by means of electromagnetic the Cove. High school, 1977, S. 35, 39, 43-47, 64. The method includes the message fast movement of at least one of the hard parts for collision of at least one of them with the other parts, at least one of the solid parts made of electrically conductive material, and the movement of the reported pressure pulsed magnetic treatment.

General description the present invention

In the following text to simplify the description and facilitate correct understanding of the present invention will be used for the following terms:

Billet: a Metal object that is deformed in accordance with the present invention, by a pressure force applied to its surface.

Running surface: the surface of the workpiece, which is shown in sharp and quick movement by means of a pulsed magnetic force. In accordance with the invention, the moving surface is solid, which compel us to face the other surface (which may be stationary or may be moving surface moving in the opposite direction) with a kinetic energy that causes the two surfaces to be connected or boil each other (the result of the work, applied to the work or its parts that makes deform the workpiece or part. Processing in accordance with the present invention means a pulsed magnetic pressure treatment, which, in addition to changing the shape of the workpiece, results in connection surface subjected to processing on the workpiece or part thereof on the other surface.

Connection: This object (or its part) to encourage him (or her) surface to come in very close contact with another surface. The connection, for example, may be an act of compression is essentially tubular blank around a cylindrical object in the internal region of the workpiece so that a very strong and essentially constant force to compress the opposite surfaces of two objects against each other. The aim connection may be, for example, guarantee a close electrical contact, i.e. the minimum electrical resistance between two objects.

Welding: Process pressure of the first workpiece so that the two initially separated opposite surface formed between a single line. When welding these two surfaces actually melt, and then otodvigaete processing, that is driven rapid movement through the power of pulsed magnetic treatment pressure for the connection or welding on the other part of the workpiece. For example, in the case of a tip of a cable or connector machined part will consist of parts, which will contain the hollow socket, which set the cable and which then compresses through the power of pulsed magnetic treatment pressure for the connection or welding cable located therein. Machined part made of electrically conductive material or at least on its surface are coated with electrically conductive material. Such conductive material may be, for example, a metal or conductive polymer.

The opposite part of the billet, which is connected or welded to the treated part. The opposite part can be included in another preparation containing the processed part (for example, in the case of the connection cable lug cable machined part is the part containing the socket of the tip of the cable, as described above, and the opposite part is the part of the cable that is installed in the socket, which is connected or welded to the processed part), although ing the ke of the two flanges of the workpiece to each other, when the compression tube for connection or welding its walls with one another to seal the end of the tube, and so on). The opposite part can be sometimes also processed part, for example, it may be the case when the two pieces result in rapid movement toward each other to provide a connection or welding one to another (for example, this is a case of compression of the walls of the tube to seal the end of the tube).

The first procurement: Procurement, which contains the processed part, which must be connected or welded to the opposite part to another, the second workpiece (see below).

The second workpiece: Workpiece containing the opposite part in the case, when the treated metal part is in another piece.

The present invention relates to the use of pulsed magnetic treatment pressure for joining or welding of the surfaces of the workpieces or parts of the blanks between them. In accordance with the present invention this is achieved by the fact that induce at least one of the workpiece or of the billet, containing one of the surfaces intended for connection or welding (machined part) just move on napra or welding (opposite side). Fast movement is maintained as a result of force application of the pulsed magnetic treatment pressure to the parts being processed, which is either made of electrically conductive material or has at least one surface on which a coating of electrically conductive material. Conditions of application of force of pulsed magnetic treatment is adjusted so that after the two surfaces face each other, they connect or cooked together. To regulate the strength of pulsed magnetic treatment pressure, usually boils down to the fact that the speed of the moving surface was informed of the processed part of the kinetic energy before the collision, which is more than the sum of the energy of plastic deformation and the energy of elastic deformation of the opposite side.

The present invention provides a new method for joining or welding of objects with one another, as well as design obtained through such connection or welding. The method corresponding to the present invention, allows to make some objects or designs that are new themselves, for example, a connection cable and connector, such as the tip of the cable, in which the threads or is close to zero), that is, thread or wire fill essentially the entire cavity, into which they entered; or a superconducting cable having a thread embedded in the cable sheath or matrix with very little free space; the connection of two superconducting cables; new grounding cable or wire and so on. These new objects or designs without regard to the method by which they are obtained, are also an aspect of the present invention.

Thus, the present invention provides a method for connecting or welding to each other at least two rigid parts, providing an urge movement of at least one of the solid parts, which is either made of electrically conductive material or has at least one surface on which a coating of electrically conductive material, through the power of pulsed magnetic treatment by pressure so as to push at least one solid part with another, if this movement reported at least one solid part of the kinetic energy, which induces at least two rigid parts connected or welded together.

Two to be joined or welded solid part of the C steel stainless steel, brass, copper and so on. Alternatively, one part may be made of one of the alloys or conductive polymer, and the other from another material, for example metal material having electrical conductivity, and so forth.

In accordance with a preferred embodiment of the present invention provides a method for joining or welding of at least two solid parts, providing a forced flow of solid parts against each other by encouraging rapid movement of at least one of the hard parts to make at least one surface to collide with other solid parts, and the specified at least one of these solid parts) made of electrically conductive material, or contains at least one surface made of electrically conductive material, and the movement is induced through the power of pulsed magnetic treatment pressure, the value of which is so important, to the initial kinetic energy of at least one of the solid parts before the collision was equal to or greater than the sum of the energy of plastic deformation p the collision, making at least two rigid parts are joined or welded together.

Two solid parts that must be joined or welded together, and priori facing each other or placed so that the opposite surface or touched or been near one from the other. Then from the solenoid that generates a magnetic field near the surface of the processed part, located opposite the corresponding surface of the opposite side, put the power of pulsed magnetic treatment pressure and thereby result in movement of the processed part. (It should be noted that even if the two parts relate to one another, between the two surfaces at the microscopic level there is a sufficient distance to provide acceleration and increase of the kinetic energy of the processed part).

As mentioned above, the processed part and the opposite part is they can both be on the same workpiece. This can be, for example, the case of the compression end of the tube, for example a metal tube, for connecting or welding the inner walls between themselves in order to seal the tube. Alternatively, as was Kamer, as in the case of the connection of the connector with electrical cable. In most cases, use one of the hard parts subject to connection or welding will be fixed, and the other is machined part, which is reported rapid movement through the power of pulsed magnetic treatment pressure. However, in some cases, the use of both solid parts are moved towards one another, and in this case is, for example, the case of sealing the end of a metal tube, as mentioned above. In the latter case, when all the solid parts to be joined or welding, forcibly accelerated in fast motion, both will be treated parts, and the opposite parts.

In accordance with one embodiment of the present invention two solid parts to be joined or welding, each on a separate object (the first and second harvest), both are independent elongated parts. In accordance with this embodiment at least the processed solid part is a hollow elongated element, and the sizes of the two first parts are such that the two parts may include one another without a gap. is th in the hollow internal region of the other part;

(b) the motive surfaces of the first elongated workpiece to the first workpiece to move in the direction to the opposite surfaces of the other of the elongated opposite side of the second workpiece by means of a pulsed magnetic force to induce surface of the processed part of the encounter with the opposite surfaces of the opposite side with such speed, that the kinetic energy of the moving workpiece to the first workpiece before the collision was greater than the sum of the energy of plastic deformation of the moving part and the energy of elastic deformation of the opposite side after the collision; allowing the two parts are joined or welded together.

Examples of this variant is the electrical connection to the cable with a cylindrical workpiece or part of the workpiece, such as a connection cable with a tip of a cable or other type of connecting device; the connection or welding two elongated objects, such as two electric cables or two rods, by means of a tubular connecting element; welding two tubes between them, and so forth.

In accordance with another embodiment nicoga variant implementation is the connection or welding one metal plate, panel or foil on the other, welding the end of one metal strip or foil with the other end of a metal strip or foil and so on.

Additional option of implementing the present invention relates to the production of superconducting cables or wires. Such cables have a matrix sheath or jacket of the same alloy, for example aluminum or copper, and have a filament, which are located in cavities or longitudinal channels in the cable and which is made of a different alloy, for example, of niobium alloys or alloys of titanium-niobium. In accordance with the present invention, such a composite cable or wire is produced by introduction of the filaments in the longitudinal channel or cavity of the cable or wire, which is then pulled together by means of pulsed magnetic treatment pressure. The result is a very dense composite cable or a thread with a very small, almost zero pore volume. Sometimes the threads themselves have a combined structure and can also be obtained through pulsed magnetic treatment pressure in accordance with the present invention.

Another variant implementation of the present invention relates to the manufacture of a ground wire or cable is ing to another metallic shell.

Additional option of implementing the present invention relates to the compression and welding of the walls of the metal tube in order to form amazonprice seal.

Another variant of implementation refers to the compression tube made of metal or conductive polymer, on the object is made of electroconductive material in order to obtain a connection tube with the specified object.

The method of pulsed magnetic treatment pressure corresponding to the present invention can also be used in accordance with the other options in the implementation of the connection or welding the first flat blanks from the second spherical workpiece.

Obviously, the above embodiments of are only some examples of the many embodiments that are within the scope described in this application of the invention.

The present invention also provides a device suitable for use in the above method. The device corresponding to the present invention, contains a power source, one or more capacitors (which can store more electric energy), Regulus the magnetic field, in the device corresponding to the present invention, will limit machined metal part, and sometimes the final form of the parts being processed. For example, in the case of a connection or welding two flat blanks the size and shape of a flat solenoid generating a magnetic field, will determine the size and shape of the first workpiece which is subjected to processing and which then forms a welded joint with the opposite part of the second workpiece. In the case of a connection or welding two elongated parts, the length of the solenoid generating a magnetic field, will limit the length of the processed part which is welded or connected with the opposite part. In addition, the form of a solenoid that generates a magnetic field, i.e. the shape of the path that is specified by a solenoid generating a magnetic field, will be a factor in the final cross-sectional shape of the processed parts after processing. For example, when connecting together two tubular objects solenoid generating a magnetic field, has a hexagonal shape and can contribute to the final hexagonal shape of the parts being processed.

In General, due to the use of existing knowledge and additional knowledge gained in the design of the solenoid, generating a magnetic field that meet specific technical requirements.

Now the effectiveness of the present invention will be further illustrated with reference to the typical option of implementing the present invention related to connection or welding of two essentially cylindrical objects between them.

Processed (first) portion corresponding to the above characteristic variant implementation, is preferably cylindrical, although it may also be prismatic, and may also have an elliptical or oval cross-sectional shape and so on. The opposite (second) part is also preferably is cylindrical, but like the first part may also have, in addition to round, many different configurations of the cross-section. The second part may have a cross-sectional shape similar to the cross-sectional shape of the first workpiece, that is, both will have a round cross-sectional shape, both will have a hexagonal cross-sectional shape and so on. However, the first and second parts may also have different cross-sectional shape, for example, the first part is cylindrical, and the second part is ü such to allow either the introduction of the second part into the cavity of the first part or introduction of the first part into the cavity of the second part.

The first part is induced in rapid motion through the power of the pulsed magnetic field generated by the solenoid closest to one of its surfaces other than the surface which is welded or connected with the opposite surface on the second part. In one embodiment of the present invention, the second part is introduced into the first part and then the first part compresses the second part by means of a solenoid generating a magnetic field surrounding its outer surface. In accordance with another embodiment the first part is injected into the cavity of the second part and then extend through the strength of the magnetic field from the solenoid adjacent its inner surface in order to cause a collision in the cavity and then to connect with the walls surrounding the second part.

Ribs prismatic hollow object have a slightly greater resistance to compression than other parts of the walls of the prismatic object. Thus, in the case of a prismatic object power pulsed magnetic treatment pressure must be adjusted in accordance with the appropriate the associated angle, which correlated with the increase in the number of faces of the prismatic object. In accordance with these ribs octagonal objects have less resistance to compression than the hexagonal edges of the object (taking into account the fact that the wall thickness and the metal alloy from which is made the object in both cases is the same), and the edges of hexagonal objects in turn have less resistance to compression than the ribs pentagonal or rectangular objects. Obviously, if the number of faces of the prismatic hollow object increases, the force of pulsed magnetic treatment pressure is approaching the effort required for pulsed magnetic forming a cylindrical object. The additional effort required in the case of a prismatic hollow object (in comparison with the hollow cylindrical object), can also be reduced by rounding the edges. The specialist in this field of technology without undue difficulties will be able to construct a device for pulsed magnetic treatment pressure solenoid that generates a magnetic field that meets certain technical requirements for a particular application.


< / BR>
where U is the velocity of a moving surface of the first part before the collision,

m is the mass of the first part, and

A1and A2the energy of plastic deformation of the first part and the energy of elastic deformation of the second part, respectively, which can be calculated in accordance with the following approximarely equations (2) and (3)

< / BR>
< / BR>
where r01and r02respectively the radii of the first and second parts before deformation,

r1and r2respectively the radii of the first and second parts after deformation

e - the Exhibitor,

1and2- tensile strength tensile alloys, of which the first and second parts,

V1and V2accordingly volumes, limited in the first and second parts after deformation, and

1and2- what external (4) and (5)

< / BR>
< / BR>
Based on the above requirements (A1 and A2) energy using the following equations (6) and (7) can be calculated operating voltage (V)

< / BR>
where W is the energy stored in the capacitor Bank,

< / BR>
k is a coefficient whose value depends on device settings pulsed magnetic forming (including own capacity and inductance) and parameters for the operation of the solenoid,

L is the total inductance of the electric circuit of the discharge solenoid, circuit breaker, generating pulses, and capacitor Bank),

l is the length of the working solenoid (as well as the length of the deformable section of the workpiece),

0- the magnetic permeability in vacuum,

h - the size of the gap between the working solenoid and the workpiece,

U, m, and r01the parameters described above,

C - General electric capacitance of the discharge circuit.

If the object is not cylindrical, it may sometimes be necessary to use a slightly modified settings energy of a pulsed magnetic field. For such objects, you must define A1and A2and then, using equations (6) and (7) can be determined speed and voltage. For example, if the prismatic floors shall rotisserie edges of deformation, typically, it will require a little more force of the magnetic field. In addition, as is obvious, the above equation is applicable for the situation in which the length of the deformable portion is larger than the diameter of the tube; if the part is less than the diameter of the tube, it is necessary to make some correction, taking into account the deformation resistance on one or both ends of the deformable part.

Kinetic energy, which will be communicated to the first part, will determine the connect or cooked first part with the second part. Generally, a larger value of the kinetic energy will lead to welding, and less to the connection. Generally, if the moving speed of the surface of the first workpiece is less than 300 m/s, the first and second workpiece be connected together. If the moving speed of the surface of the first workpiece more than 300 m/s, the surfaces of the first and second blanks that come in contact interaction can be welded one to the other. For welding, as a rule, it is preferable to create a small distance between the opposing surfaces of the first and second workpieces to enable the specified surface of the first workpiece to accelerate and achieve the desired speed to obtain since she remained motionless during the collision (impact) with the first piece.

Sometimes it may be desirable to encourage the movement of the parts being processed through a series of magnetic pulses following one another, and not one magnetic pulse. This can be obtained, for example, in a device having multiple electrical circuits of electric current discharge, and each circuit is activated at the appropriate time. Such a device has elements of novelty and also an aspect of the present invention.

Hereinafter the present invention will be described on not restricting its typical examples of embodiments with reference to the accompanying drawings. Example embodiments relate mainly to the treatment of parts of metal workpieces. However, it is obvious that the present invention in General and many of the described embodiments is particularly applicable with the relevant necessary changes for machining parts made of other than metal, electrically conductive material such as conductive polymer. For example, a tube made of electrically conductive polymer can be processed in a similar manner as illustrated in Fig. 1-5 or in Fig. 16. In addition, not being manufactured is as examples, can have one or more surfaces on which a coating of electrically conductive material. Skilled in this technical field specialist, based on the description of the present invention can easily implement it on machined parts, made not of metal but of a different electrically conductive material or, for example, having only one or more surfaces obtained from electrically conductive material.

Brief description of drawings

Fig. 1-5 - the sequence of connection of the cable with multiple threads, with the tip of the cable.

Fig. 1 is an isometric image of the site, consisting of a cable and the tip of the cable, after the introduction of the end of the cable into the cavity of the handpiece cable.

Fig. 2 is a top view (in partial section) of the node shown in Fig. 1.

Fig. 3 is a cross section taken along the line 3-3 shown in Fig. 2.

Fig. 4 is a top view (in partial section) of the site after retraction of the cylindrical part of the tip of the cable and the formation of a strong connection cable lug cable.

Fig. 5 is a cross section taken along the line 5-5 shown in Fig. 4.

Fig. 6A is an isometric image of the device, suitable, in particular, for connection of the cable with the tip of the cable, as shown in Fig. 1-5.

Fig. 6B is a side view of the solenoid device of pulsed magnetic treatment pressure corresponding to another variant implementation of the present invention.

Fig. 7 - the device corresponding to another variant implementation of the present invention.

Fig. 8 connection of a cylindrical object with a tube received in accordance with the present invention when using the device, a variant of which is illustrated in Fig. 7.

Fig. 9 is a schematic representation of a method for joining two rods in accordance with the embodiment of the present invention.

Fig. 10 is a schematic representation of a method of connecting two superconducting cables with each other in accordance with the present invention.

Fig. 11 is a schematic view of another variant implementation, the corresponding present invention, the connection of two superconducting cables.

Fig. 12 is a schematic cross-sectional view of the method of obtaining the grounding cable option implementation corresponding to this image is the future of cable options implementation relevant to the present invention.

Fig. 14 - the heating coil in which the coil and the electrical pin output is connected or welded together by means of metal sleeves, pulled on the spiral using the method of pulsed magnetic treatment pressure corresponding to the present invention.

Fig. 14A is a view of this device from the side.

Fig. 14B is a cross section taken along the line 14B-4B shown in Fig. 14A.

Fig. 15 - the device that corresponds to a variant of implementation of the present invention.

Fig. 15A - one application of the device for joining or welding of the two hollow cylindrical objects, requires the use of a liner or the appropriate positioning of the two objects and maintaining the walls.

Fig. 15B is another way of using the device for joining or welding of the two hollow cylindrical objects without the use of such a liner.

Fig. 15C is a longitudinal section taken through the connection of two tubes of different diameters, welded together by using the device shown in Fig. 15A or Fig. 15B.

Fig. 16 - way variant implementation corresponding to this izobreteny is.

Fig. 17 is a device for welding two flat metal objects.

Fig. 18 is a cross section taken along the line 18-18 shown in Fig. 17.

Fig. 19 and Fig. 20 - two options for the implementation of the welding initially flat metal blanks to a spherical metal workpiece.

Fig. 21 is a schematic diagram of the magnetic circuit device of a variant of implementation of the present invention.

Fig. 22 is a schematic diagram of the magnetic circuit device of another embodiment implementing the present invention.

Description of typical embodiments of the present invention

First, with reference to Fig. 1-5 will be described by way of connection with one another cable and handpiece cable corresponding to the present invention. The tip 22 of the cable includes a mounting base 24 for attachment to another object, and, essentially, a cylindrical portion 25 having a cavity 26. The cable 28 includes multiple fibers 30 of the conductors, and each has an essentially circular cross-section.

The cable 28 and the tip 22 of the cable are combined by introducing the end portion 32 of the cable into the cavity 26 of the tip of the cable, as can be seen in Fig. 1-3. La connection cable with spade terminal of a pulsed magnetic force is applied to the cylindrical part 25 and therefore, compresses a cylindrical part 25, thanks to its internal surface are connected with the end part 32 of the cable 28, as can be seen in Fig. 4.

As a result of this compression, as shown in Fig. 5, the fibers 30 are compressed and become hexagonal in cross section. After compression of the cylindrical portion 24' has a radius r1and the cable has a radius r2. After compression of the cylindrical part 24' is a thickening of the walls of the compacted cylindrical part 24'.

In a typical fiber cable fill approximately 65% of its internal space. After full compression due to the fact that fiber steel hexagonal in cross section), fiber fill essentially 100% of the internal space of the cable. This means that the cable after full compression crimped to approximately 80% of its original diameter.

In line with this, knowing the value of r02the value of r2can be calculated as an amount equal to approximately 80% of r02. The value of r2equal to the inside radius of 25 after tightening and, knowing the original wall thickness of the part 25 can be calculated wall thickness after shrinking and once you have it you can calculate r1

The connection cable with the tip of the cable is an example of a connection cable with a cylindrical workpiece. Other examples are the connection of two cables to each other by applying an elongated connector with two hollow sockets on both ends or through the use of a hollow tube and so on.

In Fig. 6A is a schematic diagram of a device suitable for implementing the method described with reference to Fig. 1-5. This device, indicated overall by the reference number 40, includes a control unit 42, which can provide fast strong current discharge, electrical leads 43 and 44 for transmission of electric current and the solenoid 46, which generates a magnetic field. Electrical leads 43 and 44 are electrically connected with the solenoid 46 through the connector 47 and 47a and 48 and 48a. Typically, the solenoid 46, which generates a magnetic field acting from the surface, for example, the desktop shown on the drawing surface 49, indicated by the dotted lines, and other components of the device are hidden under the surface. The solenoid 46, which generates a magnetic field, has a cavity 50 into which is injected the workpiece, poalim 51.

In this typical embodiment, the device 40 is used for connection of the cable with the tip of the cable, as shown in Fig. 1-5. Obviously, this device can be used for many other purposes, for example, for the manufacture of the ground wire, the superconducting cable, connecting two superconducting cables and many other purposes, some of which will be described below. The width of the solenoid 46 determines the length of the section, which will be compressed when the discharge of electric current through the solenoid 46.

In this typical example, the node 52, which contains the tip 53 of the cable and the cable 54, which freely enters the tip, injected into the cavity 50 so that the cylindrical part 55 of the tip 53 of the cable is essentially completely housed in the cavity 50. After that, through the solenoid 46 provide a rapid discharge of a large electric current and the strength of pulsed magnetic treatment pressure that occurs as a result of this discharge, leads to compression of the walls of the cylindrical part 55 on the end of the cable 54, making both of these billets are simply connected to each other.

In Fig. 6B shows a solenoid that generates a magnetic field, indicated overall by the reference number nedosvechennye to perform similar functions, indicated similar reference numbers and the reader to become familiar with them may apply to above description. As you can see, the main difference solenoid 56 of the solenoid 46, shown in Fig. 6A, is that he has a ribbed design. The advantage of this design, on the one hand, is that the electric current is limited to a narrow space and, thus, it is more effective in creating the magnetic field, but on the other hand, the ribs provide strength required from such a solenoid.

In Fig. 7 shows a device corresponding to another variant implementation of the present invention, which in this typical example used for welding or connection tube on the rod. The same version of the implementation shown in Fig. 6, it is obvious that this device can also be used for many other purposes. The device, indicated overall by the reference number 57, contains the solenoid 58, which generates a magnetic field having multiple coils (7, in this specific example) around the tube 59, which is made of insulating material such as plastic. The device further comprises a source 60 of the power supply connected to the tripping of the circuit breaker 62 electric current discharged through the solenoid 58, generating a magnetic field.

Two workpieces to be connected to each other, which in this example represents a metal tube 63 and the metal shaft 64 is injected into the cavity 65 of the insulating tube 59. To weld these two blanks between them, preferably there should be some gap 66 between the two workpieces, typically, approximately 5-20% of the inner diameter of the tube 63.

Obviously, when the discharge of capacitor 61 occurs fast flow a large electric current through the solenoid 58, which causes eddy currents in the tube 63, and then the resulting magnetic pressure is prompting her to quickly Obinitsa on the rod 64 and quickly welded with him. The length of the tube 63, which will run the compression, the length of the solenoid 58.

In Fig. 8 illustrates the connection 66 of the tube 67 with the rod 68 received in accordance with the method described with reference to Fig. 7. Depending on the magnitude of the magnetic pressure, is used to obtain a connection, and therefore, the speed of the cylinder before the collision with the rod will have a place or welding two workpieces or only their dense mechanicaldesign objects variant implementation, relevant to the present invention. The ends 70 and 71 of elongated objects 72 and 73, respectively, cut off or cut to obtain two complementary inclined surface forming with the longitudinal axis of the relatively acute angle. Two objects are positioned so that their beveled or cut the ends touched each other, with their axes slightly offset from each other in the vertical direction. After that, as schematically shown by arrows in Fig. 8A, through the application of a large pulsed magnetic forces of the two end segments 70 and 71 face each other and welded together, that is, they form with each other a whole.

In Fig. 10 illustrates a method for connecting the ends of two superconducting cables corresponding to the implementation of the present invention. Two superconducting cable 76 and 77, of which the drawing shows only an end part, each contains a metal matrix 78, is made of a metal alloy, and the threads 79, made of another metal alloy. In order to have the necessary electrical conductivity, it is necessary to join the two ends so that the threads were the same stretch. For this purpose, the ends 76 and 77 of the two cables dir is g with each other in the cavity 80 of the cylindrical workpiece 82 (Fig. 10B). Then by application of a pulsed magnetic force, schematically shown by arrows in Fig. 10B, a cylindrical workpiece 82 is pulled together on the superconducting cable and through this, therefore, be tight connection of the two cables as shown in Fig. 10C.

In Fig. 11 illustrates the method of connecting two superconducting cables corresponding to another variant implementation of the present invention. The end faces 84 and 85 of the cables 86 and 87, respectively, are drilled to receive multiple channels 88, and each is designed for a corresponding threads 89 of the superconducting cable, as can be seen in Fig. 11B. Connecting element 90 that contains the tabs 92, which correspond to the channels 88, set between the two ends of the superconducting cables, as shown in Fig. 11C, and then on top of this node set cylinder 94. After that, as schematically shown by arrows in Fig. 10C, to the node exert magnetic force and, therefore, are tightening the cylinder 94 on the cable and thus get a strong connection, as shown in Fig. 11D.

In Fig. 12A illustrates a method of obtaining a grounding cable or wire. Wire 100 shown in Fig. 12, consists of veins 102,0 can be obtained, as described with reference to Fig. 7 and Fig. 8. The cylinder or shell, made of insulating material, for example polyethylene, ceramic material, and so forth, are mounted on top of the wire, and on top of the cylinder or shell mounted metal, for example copper, a cylinder, as shown in Fig. 12B. By the subsequent application of the magnetic force, as shown schematically by the arrows in Fig. 12B, tighten the metal cylinder 108, which causes the contraction of the insulator 106 and thereby gain a dense structure shown in Fig. 12C.

In Fig. 13 shows a schematic illustration of a method of producing a superconducting cable according to the embodiment of the present invention. Longitudinal matrix 110, which is made from the same alloy, for example copper, contains a plurality of longitudinal channels 112 and threads 114, made of a different alloy introduced into each of the channels, as shown in Fig. 13A. Subsequent application of a pulsed magnetic force, as shown by the arrows in Fig. 13A, pull together all of the cable and, hence, the walls of each channel are connected with threads, allowing for a superconducting cable, which, as can be seen in Fig. 13B, almost not the 17 pin conclusions. The coil 116 is a coil and passes between the two pin outputs. Each of the nodes 117 pin conclusions consists of isolator 118, made of plastic, ceramics and so on, and an electric whip output 119, which passes through the insulator 118 and ends in part 120, which is in contact with the end part of the spiral 116.

This element further comprises two metal sleeve 121 covering the ends of the helix 116, blocking part 120 electrical pin output 119. The sleeve 121 is pulled together on the design, consisting of part 120 and the spiral 116, and get a tight connection of the two elements with each other, which guarantees the high quality of the electric contact, which has a high resistance to erosion, which can occur during continuous operation.

In Fig. 15 shows a longitudinal section of the device, corresponding to a variant of implementation of the present invention, intended for use in connection or welding of elongated objects with each other. The device, indicated overall by the reference number 122, contains the solenoid 123 that generates a magnetic field containing many turns, separated from each other group is the application of a pulsed magnetic force in the cavity 128 of the field shaper will create a large magnetic pressure, as a result of exposure which will be pulled cylindrical object mounted in the cavity.

In Fig. 15A illustrates two examples of application of the device for connecting together two hollow tubular blanks, one of which is a first tubular workpiece 130 is relatively larger diameter, and the other second tubular workpiece 132 is relatively smaller diameter. These two preparations are respectively part 134 and the portion 136, which must be welded together. The problem with this welding is associated, first, with the correct positioning of the two blanks so that they will remain aligned and, in addition, you must ensure that when the collision of two blanks part 136 of the second workpiece 132 remained essentially stationary and thus were welded with part 134 of the first workpiece. In the example illustrated in Fig. 15A, these two requirements are satisfied by applying the liner 138, which has a first part 140 having a diameter equal to the inner diameter of a tubular workpiece 130, and the second part 142 having a diameter equal to the inner diameter of a tubular workpiece 132. These two parts 140 and 142 coaxially and in line with this, the first workpiece 1 is time, when the application of the magnetic force part 134 is moving quickly to part 136, which remains essentially stationary during the collision (impact), thus, these two parts are welded together.

Maintaining the inner walls of the tubular workpiece in the collision process through the outer tubular workpiece can be achieved through many other means. They include, for example, filling the entire cylinder of incompressible liquid, such as water; the introduction into the tube of magnetic fluid, such as mercury, oil suspended therein metal particles and so on, and then the application of a constant magnetic field before a pulse of magnetic pressure treatment in order to concentrate the magnetic fluid in the part requiring maintenance; by the ice received in the corresponding part, and so on. Such technical solutions, ensuring maintenance are required, for example, in those cases, if the inner cylinder is long and, therefore, there is no possibility of the liner, as shown, for example, in Fig. 15A.

In Fig. 15B illustrates the method of applying the same device without using a liner. As the display is to be made of the same alloy workpieces 130 and 132 or from different alloys. These two rings help to partially shaping the magnetic field, and also serve to improve the quality of welding: when the force of pulsed magnetic treatment pressure and fast internal moving part 134 two rings 142 and 144 are welded to portions 134 and 136. In order to guarantee optimal conditions, i.e. to avoid tightening portion 136 in a collision (collision), pulsed magnetic pressure treatment must be performed within a very short pulse, typically in a period of time which is approximately equal to or slightly higher than T/4 . The following equation (8) describes the approximated correlation of different parameters, which allow to obtain the required conditions

< / BR>
where l is the length of the working solenoid,

n - number of turns of the working solenoid,

L is the total inductance of the discharge circuit.

In Fig. 15C illustrates the connection of two tubes of different diameter.

In Fig. 16 illustrates a variant implementation of the present invention, related to the compression of the walls of the metal tube and welding the inner surfaces together. An example of the application of this option is to seal metallicas in refrigerators or air conditioners, or for sealing tubes containing gas that can be ignited (e.g., cooking gas).

In Fig. 16A illustrates a schematic longitudinal section showing a metal tube 145, part 146 which is surrounded by a metal coil 147. As shown in Fig. 16B, with the rapid discharge of electrical current through the coil 147 pulsed magnetic field provides compression wall portion 146 and welding the inner walls of this part of each other. As is evident from Fig. 16B, after compression there is a thickening of the walls of part 146. Part 146 may then be cut in half, providing, thus, obtaining a compressed end 148, which prevents the release of gas (shown by arrows) from the tube.

In Fig. 17 shows an isometric depiction of a device for welding two flat metal pieces (substructure solenoid removed to ensure ease of image), and Fig. 18 is a cross section of the device shown in Fig. 17. To connect the two slabs are used, essentially flat solenoid. Flat solenoid 150, shown in Fig. 17 has a configuration and dimensions, essentially the same configuration and size of the area of the first workpiece 15 by means of the bearing wall 158, fixed to the desktop by means of the fastening element 160. With the passage in the solenoid 150 pulsed electric current flat workpiece 152 will quickly move down and if it is fast enough will collide with the workpiece 154, for example, speeds of over 300 m/s, two metal workpieces are welded together. For this purpose, a magnetic force is applied in the direction shown on these drawings by arrows.

In Fig. 19 and Fig. 20 schematically illustrates the welding of a flat metal workpiece 162 and 162' to spherical objects 164 and 164', which are cylindrical and prismatic objects, respectively (shown in cross section).

In Fig. 21 shows the electrical circuit providing a pulse generating magnetic force in the device corresponding to the variant of implementation of the present invention. The device includes a source 170 of the power supply, which can be multi-channel, as shown in Fig. 21, and one or more circuits 174 (in this embodiment shows three circuit) and the shaper 182 field. Each such circuit 174 includes a battery 176 capacitors, the solenoid 178, generating a magnetic field,th generator 182.

Electricity is provided by source 170 power accumulated in the capacitor or capacitor Bank 176, then served with trigger generator 172, while the accumulated potential is discharged through the solenoid 178. The device contains a variety of unique chains of formation of the magnetic field provided using the present invention. The advantage of this device is that through appropriate synchronization triggers for each of the breakers 180 may be accompanied by a series of pulsed magnetic forces, which may be useful for different applications.

In Fig. 22 shows the electrical circuit corresponding to another variant implementation. In Fig. 22 items similar to the functional elements shown in Fig. 21 shown with the same reference numbers. This implementation is particularly suitable for providing a very high energies. This device contains a transformer 184 for each of the chains 174', which has a primary winding 186, with lots of turns and a secondary winding 188 having one turn. All of the secondary winding 188 is connected in parallel with the solenoid 190, the generating system is its opposite one another, includes a message quick movement, at least one of the hard parts for collision of at least one of them with the other parts, at least one of the solid parts made of electrically conductive material or at least one surface made of electrically conductive material, and the movement of the reported pressure pulsed magnetic treatment, characterized in that the magnitude of the power pulse magnetic processing pressure is set according to the conditions of ensuring the kinetic energy of the at least one of the solid parts before the collision, equal or greater amount of energy of plastic deformation of at least one of the solid parts and the energy of elastic deformation of at least two solid parts after a collision.

2. The method according to p. 1, characterized in that use two solid parts, each of which is elongated part to separate the workpiece, and at least the first part is machined part and is made hollow, and the sizes mentioned solid parts allow them to enter one another without a gap, enter one of the two solid parts in the hollow internal region of the other part, give the movement of the surface of the opposite side of the second workpiece under the action of pulsed magnetic force to the collision surface of the processed portion with opposite surfaces of the opposite side with speed, in which the kinetic energy of the moving workpiece to the first workpiece before the collision was greater than the sum of the energy of plastic deformation of the moving part and the energy of elastic deformation of the opposite side after the collision and join or weld two solid parts between each other.

3. The method according to p. 1, characterized in that the processed portion is cylindrical socket and the opposite part is a metal cable.

4. The method according to p. 3, characterized in that the metal cable link or weld connector.

5. The method according to p. 2, characterized in that the first workpiece using a shell or matrix superconducting cable made from the same alloy, and the second workpiece, one or more filaments made of a second alloy introduced into the cavity or longitudinal channels of the superconducting cable, and enter these threads specified in the cavity or channel and tighten the supplied matrix or shell by means of the pulsed magnetic force.

6. The method according to p. 2, characterized in that it is designed for making ground wires.

7. The method according to p.p. 7, characterized in that establishes connection or welding between the inner surfaces of the walls of the tube.

9. The method according to p. 2, characterized in that the velocity U of the surface treated solid part before the collision with the opposite surface of the opposite side is determined from the equation

< / BR>
where U is the velocity of a moving surface of the processed part before the collision;

m1- weight of the work pieces;

A1and a2the energy of plastic deformation of the processed part and the energy of elastic deformation of the opposite side, respectively, which can be calculated in accordance with the following approximarely equations:

< / BR>
< / BR>
where r01and r02accordingly, the radii of the workpiece and the opposite parts before deformation;

r1and r2accordingly, the radii of the workpiece and the opposite parts after deformation;

e - exponent;

1and2- tensile strength tensile alloys, made from processed and the opposite part;

V1and V2accordingly, volumes, limited in processed and opposite parts after the deformation the NGOs, calculated in accordance with the following equations:

< / BR>
< / BR>
10. The method according to p. 9, characterized in that the operating voltage V is determined from equations

< / BR>
< / BR>
where W is the energy stored in the capacitor Bank;

k is a coefficient whose value depends on device settings pulsed magnetic forming and operating solenoid;

L is the total inductance of the electric circuit of the discharge;

l is the length of the working solenoid;

0- the magnetic permeability in vacuum;

h - the size of the gap between the working solenoid and the workpiece;

U, m, and r01- the parameters defined in paragraph 9;

With a total power capacity of the circuit category.

11. The method according to p. 1, characterized in that use at least two parts made flat and welded together.

 

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FIELD: plastic working of metals.

SUBSTANCE: method comprises steps of deforming sheet blank by drawing it through closed working gage of draw plate; using linear electric motor at making shapes. In order to draw blank through closed working gage of draw plate at smoothly deforming it, pulling effort uniformly distributed along the whole length of deformation zone is provided. Said pulling effort is created due to interaction of traveling magnetic field induced in winding of stator of linear electric motor with eddy currents induced in blank for moving blank according to traveling magnetic field. Apparatus for making shapes of sheet blank includes draw plate with closed working gage. Apparatus for making shapes of electrically conducting material includes linear electric motor supporting draw plate with closed working gage; the last is fixed to said motor. It is possible to use as linear electric motor single-side linear electric motor, double-side linear electric motor or cylindrical linear electric motor.

EFFECT: enlarged manufacturing possibilities, enhanced quality of shapes.

5 cl, 6 dwg

Joining method // 2254955

FIELD: machine engineering, namely joining of constructional members of articles, for example flexible members and tips.

SUBSTANCE: method comprises steps of changing shape and size at least of one of joined members at using forces of interaction of electromagnetic fields of electric currents to be passed through electric current lead. Shape and size of joined members are changed due to moving movable members of shaping tool by action of forces caused at direct interaction of electromagnetic fields of electric currents. On portions of electric current lead turned to movable members of shaping tool electric current are passed in one direction while moving said portions together with movable members of tool. On portions of electric current lead remote from movable members electric currents are passed in opposite direction and motion of said portions is limited by means of restriction members.

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4 dwg

FIELD: manufacturing equipment for plastic working of cylindrical blanks with use of magnetic devices.

SUBSTANCE: inductor includes set of electrically connected in series metallic discs having insulated layers and radial cutout from inner opening till periphery. Radial cutout is in the form of sector with angle 120°. Each metallic disc has insulated layer only at one side and along its end surfaces and it engages by its non-insulated surface with non-insulated side of adjacent metallic disc on surface of sector with angle 120° for forming helix of double layer of metallic discs at their preliminary axial compression.

EFFECT: enhanced strength of inductor at the same thickness values of metallic discs and insulation.

3 dwg

FIELD: metallurgical industry branch, possibly magnetic-pulse crimping of elongated tubular blanks or tubular blanks with thickened end portions.

SUBSTANCE: inductor is in the form of pack of flat plates coated with insulation. Said plates are arranged in pairs in mutually parallel planes, they are turned one relative to other by angle 90° and they have zone free from insulation on both sides of plate and symmetrical relative to cutout formed on one side of plate. Cutout of each plate corresponds to diameter of worked tubular blank; said plates are electrically connected in series to three-dimensional helix.

EFFECT: lowered energy consumption, enlarged manufacturing possibilities.

3 dwg

FIELD: physics.

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EFFECT: provision for directed movement of the sample along the axis, which enables determination of place of installation of sample catchers and so preserving the sample after removing the load.

4 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be used in producing shell structures with curvilinear work surfaces. Flat thin-wall preform is pressed towards shaping surface of detachable tool. Note here that, simultaneously, curvilinear section with curvilinear work surfaces are formed along with two-layer shaped stiffness ribs jointing the latter together that are produced from preform fragments not involved in forming curvilinear sections of the shell. Shell thickness is made equal to that of preform, while detachable lower die is removed through open zone on the shell extreme edge side.

EFFECT: higher accuracy of shells and efficiency of their production.

6 cl, 16 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for magnetic pulse processing. Electrically conducting coil is produced made up of a set of plates. Each plate has current conducting section, central hole and radial slot. Radial slots of adjacent plates are turned through preset angle around the central hole axis. Said current conducting sections are electrically interconnected, said adjacent sections being located on different sides of radial slots. Set of plates is made from single blank wherein plates and jumps shapes are formed to produce current conductor. Conditional line of currents of said conductor envelopes, zigzag-like, the central hole of each said plate on the side opposite the radial slot. Now, the blank is bent at jump point along bending lines, equidistant from central hole axis to allow adjacent plates to contact in contact and their central axes to be aligned. Note here that contingent surfaces of adjacent plates are electrically isolated so that their inner and outer edges are overlapped. Note also that the plates are mechanically jointed together while radial slots are filled with insulating material.

EFFECT: expanded performances.

27 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to powder metallurgy. Proposed flat inductor consists of inductor spiral representing Archimedes spiral, casing, interturn insulation and current leads to connect inductor to power supply. Zero and potential current leads are made up of rods with cylindrical bulge provided with groove receiving inductor bus that features double thickness and depth equal to bus height. Grooves in cylindrical bulge form transition from current lead to spiral turn made along tangential line in current lead/bus contact zone. Inductor bus permanently connected with current leads features double thickness, smoothly reducing to single thickness at the distance of, at least, current lead cylindrical section diametre.

EFFECT: longer life at discharge high powers.

2 dwg, 1 ex

FIELD: metallurgy.

SUBSTANCE: invention refers to the field of metal treatment under the pressure and, particularly, to the technological equipment of cylindrical works pressure treatment using magnet devices. Inductor consists in the set of metal discs connected in series with insulating layers. Metal discs have radial section from inner hole to the edge. Each disc is equipped with connection terminals located radially at the both sides of radial section outside the disc along its axis divided into the angle the value of which is set according to the number of metal discs connected with each other by turn of one respectively the other at the mentioned angle and respective fixation of two matching connection terminals until their location one above other.

EFFECT: minimal spray inductance, compactness and easy further connection to terminals of magnetic-impulse plant.

1 dwg, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming using magnetic appliances. Conductive coil is shaped to solid flat blank with conductive plate paths. Holes and grooves are made in every plate between path and central bore to make arbitrary current lines extending over all plate contour. Extreme conductive plates are furnished with connection terminals arranged in parallel while adjacent plates are connected via jumpers to make current distributor. Said jumpers are bent radially at points equidistant from aligned axes of central holes. Then, conductive plate surfaces are electrically isolated so that their internal and external contours overlap and clamped to contact. Proposed appliance comprises foot to support board with recesses for fitting conductive plate, bending mechanism made up of ledge coupled with lever and articulated with foot strut, and cylindrical pin arranged in plate bending zone that has axis aligned with hinge axis and perpendicular to lever axis and diameter that allows jumper radial bending.

EFFECT: expanded performances.

2 cl, 2 dwg

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