The method of closing the mouth of the container
(57) Abstract:Usage: when processing metals by pressure. The inventive method involves the formation of transient and cylindrical sections of the neck on the hot end rotating the workpiece support and the forming rollers. The formation of the transitional and cylindrical sections of the neck performed in stages. In a first step by the linear displacement of the supporting roller at an angle to the axis of the handle to receive the conical section. In the second stage transitional form and cylindrical parts of the neck for a few passages, at least two, in the final profile by successive axial and curved movement of the forming roller. Forming on the second stage, with the degree of compression of at least 0.5 0.6 radius of the forming roller for each pass. 1 C. p. F.-ly, 5 Il. The invention relates to a process of manufacturing a metallic gas cylinders of high-alloy steel mainly high pressure (100 kgf/cm2and above), namely technology closing the mouth of the cylinders used in breathing apparatus rescue, scuba divers, and also for storage of compressed gases under pressure is the rotary pressure vessel.There is a method of closing the mouth of the cylinders by forming transient and cylindrical sections of the heated end of the rotary tubular workpiece moving in one direction and mounted with a possibility of free rotation of the forming and propping up the rollers.In this way forming a cylindrical section of the neck of the balloon exercise is stopped against axial movement supporting roller in contact with the workpiece profile plot.The technical result of the invention is the provision of manufacturing thin-walled gas cylinders high pressure from hard-alloyed steels. In addition, the application of the method can improve the quality of the balloons.The invention consists in that in the method of closing the necks of bottles, comprising a phased transition molding and cylindrical sections of the neck on the hot end rotating the workpiece support and the forming rollers, according to the invention in a first step by the linear displacement of the supporting roller at an angle to the axis of the workpieces to be formed into the cylindrical section in a tapered, at the second stage, leaving the support is of Emesene forming roller reshape transitional and tapered parts procurement for multiple passes for example, two, in the final profile of the neck, and axial movement of the forming roller carried out parallel to the axis of the seaming, curved on the first pass of the second stage of the provisions of its vertices, offset from the center of rotation and the second passage from the position of its vertex coincident with the center of rotation. Performativen carried out with the degree of compression is not less than 0.5-0.6 of the radius of the forming roller.In Fig. 1-4 depict sequentially starting position before the sealing and two stage forming neck of the container; Fig. 5 transitional and cylindrical parts of the neck.The method is as follows.In the spindle 1 of the machine set the workpiece 2 with the pre-heated end (Fig. 1), the departure of the workpiece L provides for obtaining the necessary parameters of the neckline. Then fix the workpiece 2 and include the rotation of the spindle 1. At the first stage of forming perform linear angular displacement of the supporting roller 3 (angle 30aboutto the axis of the handle), while receiving the conical section, which has a smaller outer diameter equal to the outside diameter of the cylindrical section of the finished neck (Fig. 2). Supporting roller 3 astable l from the center of rotation O, then rotate it relatively to the radius R1angle of 50-60aboutthrough formation of the transition and cylindrical sections of the neck with a degree of compression of at least 0.5 of the radius of the forming roller. You get a neck with dimensions close to the final dimensions of the neck (l is the technological value depends on the design of the container, material, processing conditions and determines the amount of deformation in each of the passages).The forming roller 4 return to its original position (Fig. 3), and then move parallel to the axis of the handle in the direction of the larger diameter of the transition section at a distance l (Fig. 4) to align with the center of rotation (Fig. 4). Then turn the forming roller 4 at 60aboutradius R2(R20,8-0,95 R1), corresponding to the finite radius of the neck, while receiving the relevant part of the neck, and a cylindrical part of the neck make the mechanical part of the forming roller 4. At the end of the process of seaming the forming roller 4 return to its original position, thereby implementing calibrating the passage of the relevant part of the neck, ensuring high precision, and then move it parallel to the axis of the seaming in staderini roller 3 is moved in its original position (Fig. 1), stop the rotation of the spindle and push the finished container for later removal and installation of the next workpiece. The neck profile obtained is shown in Fig. 5. For the construction of the cylinders, developed at the enterprise (volume 7.3 l, a pressure of 300 kgf/cm2) the value of l is 30-40 mmP R I m m e R. the Proposed method for closing the necks of the bottles tested in the manufacture of lightweight gas cylinders high pressure compressed air 29.4 MPa (300 kgf/cm2), a volume of 7.3 liters To obtain a cylinder used monotonous blank (type of glass) with an outer diameter of 144 mm, a wall thickness t of 4.2 mm, a length of 625 mm Workpiece has a tail section for closing the neck of a thickness of 5 mm and a length of 80 mm Material sheet steel HINVVA. The end of tube L 120-130 mm was heated in the high frequency inductor to t 1100-1200aboutC. Then, the workpiece was mounted in the clamping mechanism, recorded it, and then turn on the rotation of the spindle. The rotational speed of 300 rpm-1. Processing the neckline was carried out for three passes.The first pass was carried out by moving the supporting roller at an angle of 30aboutto the axis of the handle, to receive the conical section with the following rasseivayushchego roller 250-300 mm/min Support the movie when it was left in contact with the workpiece until the end of processing.The second pass was performed with rotation of the forming roller on the angle of 55-60aboutwhile he described a circle with R175-78 mm, which was obtained by moving it along the axis of the handle in the direction of smaller diameter intermediate conical portion at the l 30-40 mm Speed of rotation of the forming roller (feed) 7-10about/C. the diameter of the cylindrical section of the cap received 34-36 mm, Then the forming roller is returned to its original position.Third pass (final) was carried out as follows. First I moved the forming roller along the axis of the handle in the direction of the larger diameter cap to l 30-40 mm, and then carried it to rotate through an angle of 60aboutat 7-10about(feed), thus forming roller described a circle with R272 mm and the outer diameter of the cylindrical part of the neck received equal 31-33 mm, i.e., received final dimensions of the neck of the container. The loop in this method was equal to 30-40 s, i.e. 4 times less than with the known method. 1. The METHOD of CLOSING the mouth of the CONTAINER, including the formation of the transitional and cylindrical Uch the same time, the formation of the transitional and cylindrical sections of the neck performed in stages, with the first stage, the formation is carried out by linear movement of the supporting roller at an angle to the axis of the handle, while receiving the conical section, which has a smaller outer diameter equal to the outside diameter of the cylindrical section of the finished neckline, and at the second stage, leaving the supporting roller in contact with the workpiece before the end of the seaming, shape transition and cylindrical parts of the neck for a few transitions, but not less than two, the final profile of the neck by successive axial and curved movement of the forming roller, whereby axial movement of the forming roller carried out parallel to the axis of the seaming, curved on the first pass of the second stage of the provisions of its vertices, offset from the center of rotation and the second passage from the position of its vertex coincident with the center of rotation.2. The method according to p. 1, wherein forming the second stage, with the degree of compression of at least 0.5 0.6 radius of the forming roller for each pass.
FIELD: plastic working of metals, namely manufacture of high-pressure bottles.
SUBSTANCE: method comprises steps of forming shell; swaging at least one open end of shell; forming bottom and mouth while making at least two mutually joined cone surfaces and increasing central angle from shell to mouth; at least after one swaging operation performing heat treatment of swaged end of shell. High-pressure bottle includes shell and two bottoms. One bottom has mouth for placing locking means. Bottom and mouth are made as one piece. Bottom from shell until mouth is in the form at least of two joined lateral surfaces of circular regular truncated cones. Each such joint is performed due to joining lateral surfaces of truncated cones along lines of bases of their small and large diameters respectively. Said joints may be smooth, with radius transitions.
EFFECT: simplified design of bottle, enhanced technological effectiveness of making it.
6 cl, 4 dwg
FIELD: plastic working of metals.
SUBSTANCE: method comprises steps of making shell, upper bottom, mouth, lower bottom and joining all parts by welding; forming lower bottom as one piece with backing flanged ring; inserting lower bottom into shell along backing ring until flange rests upon shell; butt welding shell and lower bottom on backing ring.
EFFECT: enhanced centering due to accurately inserting lower bottom to shell, improved quality of welded seam of lower bottom and shell, lowered labor consumption for making bottle.
1 dwg, 1 ex
FIELD: machine engineering, possibly manufacture of sealing envelopes of corrosion resistant steels of metal-plastic high-pressure bottles.
SUBSTANCE: method comprises steps of separately making metallic convex bottoms with cylindrical collar and backing ring. Thermal expansion factor of backing ring exceeds that of bottoms; outer diameter of backing ring provides close fit of bottoms onto it at 20°C; cooling preliminarily assembled backing ring with bottoms until cryogenic temperature; sliding bottoms on backing ring in cooled state until mutual touch of cylindrical collars of bottoms; heating assembly up to 20°C in order to provide close fit of backing ring in cylindrical collars of bottoms; welding bottoms along butt of assembly and then removing backing ring by chemical milling.
EFFECT: simplified process of making envelopes with enhanced mass characteristics.
2 cl, 4 dwg, 1 ex
FIELD: storing or distributing liquids or gases.
SUBSTANCE: method comprises molding at least of two sections of the vessel whose one bottom has an opening, and joining the sections together by outer and inner seam weld. The inner welding is performed before the outer welding. The inner and outer seams are overlapped. The inner seam weld is performed through the opening in the bottom of one of the sections to be welded.
EFFECT: reduced labor and metal consumptions.
1 cl, 3 dwg
FIELD: plastic metal working, namely shaping hollow variable cross section bodies.
SUBSTANCE: method comprises steps of shaping in die having opening for introducing hollow body and profiled inner surface corresponding to desired profile of hollow body; creating on inner surface of die temperature gradient increased in direction of hollow body motion from minimum temperature near inlet opening of die to maximum temperature in zone of least cross section of body; setting maximum temperature according to condition of largest yielding of body material; setting minimum temperature according to condition of keeping stability of body and heating body till said maximum temperature during its motion in die. In order to make metallic liner of metal-plastic high-pressure vessel from tube blank, ends of tube blank are squeezed in die with profiled inner surface. Tube blank is guided into die along its lengthwise axis. On inner surface of die temperature gradient is created in such a way that it increases in direction of blank motion along lengthwise axis of die from minimum temperature at inlet of die till maximum temperature in zone of least cross section of liner. Maximum temperature is set according to condition of largest yielding of tube blank material; minimum temperature is set according to condition of keeping stability of blank and heating blank till said maximum temperature during its motion in die. Apparatus for shaping hollow variable cross section body includes die mounted on stationary support and having inner surface of preset profile and also having inlet opening for feeding hollow body. Apparatus also includes slide made with possibility of mounting on it hollow body moving along lengthwise axis of die. Die is provided with heating unit for creating on inner surface of die temperature gradient increased along lengthwise axis of die from its inlet opening.
EFFECT: improved quality of articles due to prevention of stability loss.
16 cl, 2 ex, 6 dwg
FIELD: plastic metal working.
SUBSTANCE: method comprises setting the blank in the mandrel provided with the cylindrical and shaped sections, locking the blank in the cylindrical section of the mandrel, and affecting the blank by deforming rollers. The shaped section is initially formed by moving the rollers in different trajectories during one or several runs. Upon unlocking the cylindrical section, the blank is locked in the shaped section and the cylindrical section is drawn by moving the rollers in the opposite direction.
EFFECT: expanded function capabilities.
1 cl, 3 dwg, 2 tbl
FIELD: mechanical engineering; pressure vessels.
SUBSTANCE: according to proposed method, spheroidal bottom is made of sheet, thickness of 0.5-0.6 of designed thickness for initial elliptical bottom and is subjected to deformation at higher process upsetting pressure of 1.3-1.5 of designed value.
EFFECT: facilitated and reduced cost of manufacture.
2 cl, 1 dwg
FIELD: plastic metal working.
SUBSTANCE: invention can be used for making of bottles from sheet blanks. Proposed method includes making of shell, top plate, neck, bottom plate made integral with support ring, flanging and shoe, assembling and connecting the parts by welding. Shell is butt-welded to bottom plate on support ring. Both plates are made of blanks of equal size and in form of bottom plate. When making top plate, support part of shoe is calibrated to bring its diameter to diameter of shell.
EFFECT: reduced labor input.
1 ex, 1 dwg
FIELD: plastic working of metals, namely manufacture of high pressure vessels from recovered ammunition.
SUBSTANCE: method comprises steps of producing blanks, subjecting them to hot deformation, hot molding of vessel mouths, mechanically working vessel mouths; subjecting articles to heat treatment for providing desired strength of vessels; using as blanks bodies of recovered artillery fragmentation type or high-explosive shells with removed collar; cutting each shell in joining zone of its ogival and cylindrical parts for preparing two blanks, namely cone blank with through opening and sleeve like blank with bottom. Heat treatment is realized according to preset mode.
EFFECT: lowered cost, improved factor of metal usage due to using recovered bodies of artillery fragmentation type high-explosive shells, enhanced quality of using shell steels.
4 cl, 2 dwg, 2 ex, 5 tbl
FIELD: pressure vessels.
SUBSTANCE: plastic-coating metallic vessel comprises outer load-bearing plastic shell and inner thin-walled welded steel shell whose intermediate section is cylindrical, two bottoms, and connecting pipe. The connecting pipe and at least one of the bottoms are made in block. The method comprises rolling out the rod from its one end thus defining the flange having flat circular surface from one side, working the unrolled section of the rod to form the outer surface and inner passage of the connecting pipe, rotating tension of the flange, moulding the bottom of a given shape, connecting the bottom to the intermediate cylindrical section, and welding the parts.
EFFECT: reduced labor consumption.
4 cl, 3 dwg