A method of manufacturing cylinders
(57) Abstract:The invention relates to the processing of metals by pressure and can be used in mechanical engineering for production, for example, fire extinguishers, gas cylinders etc., the Method of manufacture of the cylinders includes a cold deformation in cylindrical glass is used as the workpiece is cut Stakhanovites part disposed sleeve. From the bottom of the glass machining draw the neck, then rolling with an elongation profiles of the outer surface, aligning the wall thickness of the middle part when thickened at the ends. The bottom of the container is formed separately spherical and attached to the open end of the Cup. An object of the invention is to improve the dimensional accuracy of the product. 2 Il. The invention relates to the field of metal forming and can be used in mechanical engineering for production, for example, fire extinguishers, gas cylinders, and so forth.A known method for the production of cylinders, including settling one end of the workpiece on the cone, getting a glass of screw rolling and subsequent deformation of the mandrel by pushing (see U.S. patent N 3462987, CL 72-97, 1969). The way Pozvoni workpiece and the deviation of the axis of the mandrel in a helical rolling of glass it is impossible to ensure the accuracy of the geometric dimensions of the product.A known method of manufacturing cylinders, comprising a sealing cap, mechanical processing with the formation of the holes, sealing plate, heat treatment and cleaning of surfaces of the cylinder (see ed. St. USSR N 1712029, B 21 D 51/24, 1989) the Disadvantage of this method is to use hot processing of the ends of the workpiece.The closest to the proposed method to the technical nature can be considered a well-known method of manufacture of cylinders for storage and transport of compressed or liquefied gas), including the use of seamless dimensional workpiece, the design of the cap (sealing) with a profiled outer surface and with the execution of the screw holes under the removable node (valve and safety valve) and forming the bottom of the cylinder (sealing) (see ed. St. USSR N 1793989, B 21 D 51/24, 1991). The sealing cap and the bottom part of the cylinder produce hot processing, which is not conducive to accurate dimensions and is the disadvantage of this method.The goal of the project is to improve the dimensional accuracy of the product by eliminating hot deformation in the manufacture of the container.The problem is solved by the method of manufacture of the container, including the use of what profilirovanie outer surface and forming a bottom, according to the invention, in which the measuring of the workpiece using cut Stakhanovite part disposed sleeves, which holodnuju is deformed into a cylindrical glass from the bottom of the glass machining draw the neck, then rolling with an elongation profiles of the outer surface, aligning the wall thickness of the middle part, when thickened at the ends, and bottom of the cylinder is formed into a spherical, separately and attached to the open end of the Cup.Because recycled liner has the exact dimensions and use only cold processed, manufactured in this way, the cylinders also have accurate dimensions. Additionally, the sleeves are coated with zinc and the coating is not disturbed by cold working, so the tanks have high corrosion resistance.The invention is illustrated by drawings, where:
in Fig. 1 shown disposed sleeve,
in Fig. 2 presents the scheme of technological operations in the manufacture of tank: 1 - cut from recycled liner dimensional Stakhanovites part 2 - pressing holodnuju cylindrical Cup, 3 - execution neck of the container by machining the bottom of the glass, 4 - profiling the indoor end of the glass.The essence of the method consists in the following. From recycled liner (Fig. 1) cut dimensional Stakhanovite the workpiece (1, Fig. 2). Press holodnuju the workpiece is deformed into a cylindrical Cup (2, Fig. 2). From the bottom of the glass machining decorate the neck of the container (3, Fig. 3) and carry out the hole for the connection, for example, cylinder, fire extinguisher removable node. Rolling with an elongation profiles of the outer surface, aligning the wall thickness of the middle part when thickened at the ends (4, Fig. 2). The bottom of the cylinder is formed into a spherical, separately from the sheet on the press (5, Fig. 2) and attached to the open end of the Cup, for example, by welding.(6, Fig. 2).The example implementation. Took disposed sleeve length 800 mm with an outer diameter 131 mm at the base of the bottom part, having a thickness of 20 mm Cut Stakhanovite part of a length of 220 mm and a diameter of the open end 126 mm and a wall thickness of 2.5 mm, and the bottom - 3 mm press holodnuju of products sformovat cylindrical Cup with an inner diameter of 125 mm From the bottom of the glass machining has issued the neck with a wall thickness of 6 mm with an inner bore with a length of 20 mm and a diameter of 63 mm, which corresponds, for example, the diameter of the head of the fire extinguisher. Then the surface on the ends of 2 mm. By stamping from a sheet thickness of 2 mm was produced spherical bottom of the cylinder with an outer diameter equal to the inner diameter of the open end of the Cup. The connection of the bottom was carried out by welding to the open alastname to the outer end of the Cup. Bottom part inserted inside so that the bottom of the tank did not come out for the plane of the open end.Obtained by the proposed method, the container has a precise geometrical dimensions, corrosion resistant, simple, and inexpensive to manufacture. A method of manufacturing cylinders, including the use of seamless dimensional workpiece, the design of the neckline with the execution of holes in it under the removable unit and with the profile of the outer surface and forming a bottom, characterized in that as the measuring of the workpiece using cut Stakhanovite part disposed sleeves, which holodnuju is deformed into a cylindrical glass from the bottom of the glass machining draw the neck, then rolling with an elongation profiles of the outer surface, aligning the wall thickness of the middle part when thickened at the ends, and bottom of the cylinder form a spherical separately and attached to the open end of the Cup.
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