Die set for equal-duct angular extrusion (variants)

FIELD: plastic working of metals with use of intensive plastic deformation, production of nano-crystalline materials with improved mechanical properties.

SUBSTANCE: die set includes band in which cone insert having several parts is pressed; lower support; inlet and outlet ducts; ram. According to first variant of invention contours of parts of cone insert are restricted by means of two mutually normal planes and cone surface portion cut by said planes. Crossing line of said planes does not coincide with symmetry axis of cone surface. Inlet duct is formed by faces of cone insert parts arranged normally one relative to other and mutually joined; walls of said duct are in the form of portions of said planes. According to second variant of invention contours of cone insert parts are restricted by radius surface, by two mutually crossing planes and portion of cone surface cut by said planes. Crossing planes are mutually normal or they are inclined one relative to other by angle 120°. Axis of radius surface coincides with crossing line of said planes. Faces of cone insert parts are mutually joined; inlet duct is formed by their radius surfaces and outlet duct is formed by radius grooves.

EFFECT: lowered number of parts, reduced consumption of material for making cone insert.

4 cl, 10 dwg

 

The invention relates to the processing of metals by pressure, using severe plastic deformation, and is designed to produce nanocrystalline materials with enhanced mechanical properties of various metals and alloys.

A device for hardening the material by pressure, AS the USSR №492780, from 11.06.73, G 01 N 3/00, publ. BI No. 43, 1975, containing a node for deformation, made it two channel proportional to the diameter of the workpiece located at an angle to each other and connected to each other, press the stamp.

The disadvantage of this device is that to maintain it in working condition for a long period of time requires frequent replacement of worn-out worn-out host strain and as a result has a high material consumption. Fairly rapid wear of the working surfaces of the input channel is due to the large frictional forces between the workpiece and the walls.

Famous stamp in the book.: A plastic structure formation metals, Wmel etc., Mn.: Nauka i tajska, 1994 - ISBN5-343-01164-0, p.92-93, contains a binder, which is pressed conical insert of several parts, the bottom support, input and output channels, press the stamp.

The disadvantage of this stamp when it is used for hardening metals by Defoe is obvious shift is its complicated structure. So, to perform input and output channels used, besides the above components, the front plate, set Mattos, gaskets and tapes.

The problem solved by this invention is to simplify the design of the stamp, which provides long-term health and insert stamp in General.

Technical result achieved when using the present invention is to reduce the number of parts of which made the stamp, and to reduce the consumption of the material of the conical insert, detached necessary to manufacture the new conical inserts to replace the worn out within a new, more long-term health.

The above technical result is achieved by the fact that the stamp for equal-channel angular pressing, containing a binder, which is pressed conical insert of several parts, the bottom support, input and output channels, press the stamp offered details conical insert to perform in the form, limited by two mutually perpendicular planes and clip them part of a conical surface. The line of intersection of planes perpendicular to each other does not coincide with the axis of symmetry of the conical surface. The input channel is formed by the surfaces of parts to the systematic insertion, arranged mutually perpendicular and interconnected. And its walls are made as part of the mentioned planes. The output channel can be formed in two parts conical inserts, one of which is made of a rectangular groove. Output channel can also be formed by two parts of the conical insert and the bottom support. One of these parts is made is divided into two parts along a plane coinciding with the upper wall of the outlet channel. One of the two mutually perpendicular planes of one side of the part is on level with regard to one of the two mutually perpendicular planes of the other part. In the die equal-channel angular pressing, containing a binder, which is pressed conical insert of several parts, the bottom support, input and output channels, press the stamp, part of the conical insert is made in the form of limited radial surface, the two intersecting planes and clip them part of the surface. While the two above-mentioned intersecting planes are mutually perpendicular or at an angle 120°. Axis radial surface coincides with the line of intersection of the two planes, which coincides with the axis of symmetry of the conical insert. When this plane parts conical inserts are conjugate to each other. In the one channel formed their radial surfaces, and output channel - radial grooves made on the conjugate planes of the two parts of the conical insert.

The implementation details of the conical insert with a form, limited by two mutually perpendicular planes and clip them with a piece conical surface, whose line of intersection of planes perpendicular to each other does not coincide with the axis of symmetry of the conical insert, allows for long term health and insert stamp in General. This obtained provided the opportunity to repair the damaged and worn surfaces of the input channel of rectangular cross-section. The execution of the line of intersection of the mutually perpendicular planes are not coincident with the axis of symmetry of the conical insert allowed to use part of one of these planes as the walls of the entrance channel. Education input channel mutually perpendicular planes in the part of the conical insert associated with each other, allowed to form and output channel. The result is a reduced number of parts being used in the stamp. The output channel can be performed in various ways. Thus, the execution of one of the two parts of the conical insert, formed output channel, a rectangular groove is structurally simple and can be applied when pressing the missing item is olivedale side output channel. When pressing with the use of back-side output of channel wall of the channel subjected to intensive wear and tear, as well as the walls of the entrance channel. One of the two parts of the conical insert, formed with the bottom support channel output, consisting of two parts, the plane of separation which thus coincides with the upper wall of the outlet channel, and one of its mutually perpendicular planes performed stepwise allowed to restore worn surfaces. Run the output of the channel formed by the planes of the lower support and the two parts of the conical insert, allows for long term health and insert stamp in General. The implementation details of the conical insert with a form, limited by two intersecting planes, radial surface and clip them with a piece conical surface, allowed to recover and other worn surface, thus providing more long term health and insert stamp in General. The implementation details of the conical insert with two planes, which can be mutually perpendicular and angle 120° to each other, with the line of intersection of these planes with the axis of the curved surface and the axis of symmetry of the conical inserts are allowed to use the radial behavior of the displacement as the walls of the entrance channel. This channel is formed by a part of the conical insert, closed with mating surfaces of other parts of the conical insert. The execution of radial grooves on the two conjugate planes of the parts of the conical insert provided education output channel, worn walls which can be restored. Thus a more long term health and insert stamp in General.

Figure 1 shows a die equal channel angular pressing (option 1); figure 2 - show the four parts of the conical insert (option 1), section a-a; figure 3 is shown a conical insert, an example of executing the output channel (option 1), type B, bandage conventionally not shown; figure 4 is shown a conical insert and the lower stop, the incision is a perspective view, and these same parts of the conical insert and the bottom of emphasis disassembled, axonometric view (option 1); figure 5 shows a sample run of the lower stop (option 2) element; figure 6 is shown a conical insert, an example of executing the output channel (option 2), type G, bandage conventionally not shown; figure 7 - shows the four parts of the conical insert (option 2), section d-D; Fig is shown a conical insert, an example of executing the output channel (option 3), type G, bandage conventionally not shown; figure 9 - shows the three parts of the conical insert (option 3), section E-E; figure 10 - on asana four parts of the conical insert (option 4), section E-E.

Stamp (option 1, see figure 1) contains the band 1, which is pressed conical insert 2, consisting of several parts, the bottom support 3 input channel 4 output channel 5 and press the stamp 6. The lower bearing 3 overlaps the input channel 4.

Conical insert 2 consists of four parts 7, 8, 9 and 10 (see figure 2). Details conical insert 2 is made with a shape bounded by two mutually perpendicular planes and clip them with a piece conical surface.

Comparing the shape of these parts with the shape of a segment in space, we see that the segment in the space of the body, limited by the plane of the clip and her piece surface. The surface is made conical. Thus, we can say that the details of the conical insert 2 is made with the form in the form of an incomplete segment. That is, the second plane, perpendicular to the first plane, cut off from a whole segment of his part, which is part of the conical insert 2.

The line of intersection of mutually perpendicular planes do not coincide with the axis of symmetry of the conical insert 2 so that when the pair of mutually perpendicular surfaces of parts 7, 8, 9 and 10 formed input channel 4. The walls of the inlet channel 4 is part one of two mutually perpendicular planes, each of the four parts of the insert 2.

Output channel 5 (see figure 3) education is an plane parts 7 insert, conjugate with the plane of the workpiece 10 inserts 2, which made Prampolini groove 11.

For clarity, the execution of the conical insert 2 (see figure 4) the axonometric image parts 7, 8, 9, 10, collected together and separately.

Stamp (option 2, see figure 5) differs from the above stamp the form of the conical insert 11, which consists of items 7, 8, 9 12 and 13 (see Fig.6 and 7), as well as the form of the lower support 14. It contains the input channel 15 and the output channel 16. The lower bearing 14 overlaps the input channel 15 and at the same time is the lower wall of the outlet channel 16.

The walls of the outlet channel 16 formed by the surfaces of parts 7, 8, 9, 12, 13 and 14 of the conical insert 11 (see Fig.7). Parts 12 and 13 are combined with each other, are essentially one piece, similar in shape to run with the other three parts of the conical insert 11. The difference between this parts from parts 7, 8 and 9 is that one of its two mutually perpendicular planes made manual, and it consists of two parts. Thus a plane of separation of the parts 12 and 13 coincides with the upper wall of the outlet channel 16. Corresponding to the plane of the parts 12 and 13 of the conical insert 11 form two walls of the outlet channel 16. The remaining walls of the outlet channel 16 formed by the surfaces of parts 7 and 14.

Stamp (option 3) is different from the above is written two versions of the stamp (see 1...7) the form of the conical insert (see Fig), which consists of parts 17, 18 and 19 (see Fig.9). It contains the input channel 20 and the output channel 21.

Items 17, 18, and 19 of the conical insert (option 3) are made, each with the form, limited by two intersecting planes, radial surface and clip them with a piece conical surface, with the two planes angled 120° to each other, with the axis of the radial surface coincides with the line of intersection of the two planes, which, in turn, coincides with the axis of symmetry of the conical surface, and the plane of the parts 17, 18 and 19 of the conical insert connected with each other, and a radial surface forming the wall of the inlet 20 and the outlet channel 21 formed by radial grooves made on two conjugate planes of the parts 17 and 19 of the conical insert.

Stamp (option 4 of Fig. not shown) different from the stamp (option 3) only the conical insert, which consists of four parts 22, 23, 24 and 25.

Items 22, 23, 24 and 25 of the conical insert (option 4) is performed, each with a shape bounded by two intersecting planes, radial surface and clip them with a piece conical surface, however, the two planes angled 90° to each other, with the axis of the radial surface coincides with the line is peresechenia both planes, which, in turn, coincides with the axis of symmetry of the conical surface, and the plane of the parts 22, 23, 24 and 25 of the conical insert shorted to each other, and a radial surface forming the wall of the inlet channel 26, the output channel 27 formed by radial grooves made on two conjugate planes of the parts 22 and 25 of the conical insert.

Stamp works as follows.

The operation of the stamp does not depend on the choices of its execution. Therefore, we consider the deformation of metal workpiece 28 in the stamp made for option 1 (see figure 1).

In the initial position the metal workpiece 28 is placed in the working channel 4 and push through the press die 6 in the direction of the outlet channel 5. When passing in the channel 5, the workpiece 29 is subjected to plastic deformation, while maintaining their original geometrical dimensions in cross section. To achieve a given degree of deformation, which determines the required physical and mechanical properties of the product, their anisotropy and texture, this process is repeated many times.

The use of this invention has allowed to receive more than a simple stamp, reducing the number of parts of which it is made, and to reduce the consumption of the material of the conical insert due detached necessary to manufacture the h is o conical inserts to replace the worn out for the new longer term performance.

1. Stamp for equal-channel angular pressing, containing a binder, which is pressed conical insert of several parts, the bottom support, input and output channels and press the stamp, characterized in that the details of the conical insert is made in the form, limited by two mutually perpendicular planes and clip them part of a conical surface, the line of intersection of mutually perpendicular planes do not coincide with the axis of symmetry of the conical surface, the input channel is formed by the surfaces of parts of the conical insert arranged mutually perpendicular and interconnected, and its walls are made as part of the mentioned planes.

2. The stamp according to claim 1, characterized in that the output channel is formed in two parts, conical inserts, one of which is made of a rectangular groove.

3. The stamp according to claim 1, characterized in that the output channel is formed by two parts of the conical insert and the bottom pillar, with one of these parts is made is divided into two parts along a plane coinciding with the upper wall of the outlet channel, one of two mutually perpendicular planes of one side of the part is on level with regard to one of the two mutually perpendicular planes other part.

4. Stamp for equal-channel angular pressing, the content is a broad band, in which is seated a conical insert of several parts, the bottom support, input and output channels and press the stamp, characterized in that the details of the conical insert is made in the form of limited radial surface, the two intersecting planes and clip them part of a conical surface, with the two above-mentioned intersecting planes are mutually perpendicular or at an angle 120°axis radial surface coincides with the line of intersection of the two planes, which coincides with the axis of symmetry of the conical insert, with the plane of the conical parts of the insert are associated with each other, the input channel formed their radial surfaces and output channel - radial grooves made on the conjugate planes of the two parts of the conical insert.



 

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