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.

 

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