A method of manufacturing a metal cylinder high pressure

 

(57) Abstract:

A method of manufacturing a metal cylinder high pressure is a combination of a welded seam of the cylindrical housing and covers. The first option on each weld cylinder pull preheated bandage. This serves a portion of the cylinder at the junction of the body and cover in a length of not less than 0.3 of the diameter of the cylinder. In the second embodiment, the ends of the housing before welding preheat and then inside of them set with tension cylindrical sleeve length of not less than 0.3 of the diameter of the cylinder with a stepped outer surface, guiding them step smaller diameter inside of the case. The surface of this step before installing cover plastic metal flush with the step of larger diameter bushings provided that the aggregate thickness of the housing sleeve is not less than the wall thickness of the cover. The use of the invention will improve the reliability of the design by providing ravnopravnosti by increasing the weld. 2 S. p. f-crystals, 2 Il.

The invention relates to mechanical engineering and can be used in methods of manufacture of the metallic high-pressure cylinders for Transporter aspartic funds.

A known method of manufacturing a metallic high-pressure cylinders by connecting weld seam cylindrical body and lids (see the description of the invention to the patent of the Russian Federation 2145398, F 17 1/00 from 09.06.1998,).

In the manufacture of the container in a known manner weld takes the entire load, and the strength of the container is determined by the properties of the weld. Mechanical characteristics of weld shall not be less than the mechanical characteristics body material and covers. In reality, however, the strength properties of the weld is significantly less body material, especially with alternating loads, which reduces the reliability of the design.

The technical object of the present invention is to improve the reliability of the design of the container by providing ravnopravnosti by increasing the weld.

To achieve a technical result of the proposed method of manufacturing metal tank high pressure by connecting weld seam parts of the cylindrical body and lids according to the invention on each weld cylinder pull preheated bandage, covering in this part of the cylinder at the junction of the body and covers for dlionocr them set with tension cylindrical sleeve length of not less than 0.3 of the diameter of the cylinder with a stepped outer surface, guiding them step smaller diameter inside of the case, the surface of this step before installing cover plastic metal flush with the step of larger diameter bushings provided that the aggregate thickness of the housing sleeve is not less than the wall thickness of the cover.

Weld when working takes both axial and circumferential load. In the container obtained by the proposed method, the Hoop stress in the heat-affected zone are perceived by the body, cover and bandage. Considering that the axial stress is two times less than the circumferential stress, even at a lower strength characteristics of the weld strength of the container remains the same. This in turn helps to alleviate metal cylinders, reducing the thickness of the walls of the casing and covers. Heating of the tyres before setting allows you to ensure the tightness of the joint during cooling.

In the proposed method (option) weld reinforcing, increasing its cross-section by increasing the thickness of the edges of the body sleeve, mounted with an interference fit inside the ends of the housing. Coating the outer surface of the lower stage bushing plastic metal, for example copper, and preheating the ends of the casing allows to obtain germ is etehrnet plastic material from the high temperatures during the execution of the weld, preserving the integrity of the junction of the sleeve and body.

Constructive design of a high-pressure bladder is illustrated by drawings, where

in Fig.1 shows a cross section of the cylinder with bandages;

in Fig.2 is a cross section of the cylinder sleeves.

A method of manufacturing a metallic high-pressure bladder is implemented as follows.

Option 1.

A cylindrical housing 1 is connected with caps 2 weld seam 3. In the area of welds 3 remove Slipknot, smooth out the seams 3 flush with the housing 1 and the cylindrical surface of the lid 2. Heat the tires 4 and skewer them on the cylinder in the zone of welded joints 3 a length of not less than 0.3 of the diameter of the cylinder, leaving the seams 3 in the middle part of bandages 5.

Option 2.

The inner surface of both ends of the housing 1 rastaivaya to receive the cylindrical surface, removing Slipknot. Then the ends of the housing 1 is heated to a temperature of 300-400 degrees and within set with the tightness of the cylindrical sleeve 2 with a stepped outer surface, guiding them step smaller diameter inside of the housing 1. The outer surface of the lower stage of the sleeve 2 pre-cover plastic metal, for example copper, flush with the mortar. the ATEM connect the weld seam 4 of the housing 1 and the cover 3.

1. A method of manufacturing a metal cylinder high pressure by connecting weld seam parts of the cylindrical body and lid, characterized in that on each weld cylinder pull preheated bandage, covering in this part of the cylinder at the junction of the body and cover in a length of not less than 0.3 of the diameter of the balloon.

2. A method of manufacturing a metal cylinder high pressure by connecting weld seam parts of the cylindrical body and lid, characterized in that the ends of the housing before welding preheat and then inside of them set with tension cylindrical sleeve length of not less than 0.3 of the diameter of the cylinder with a stepped outer surface, guiding them step smaller diameter inside of the case, the surface of this step before installing cover plastic metal flush with the step of larger diameter bushings, provided that the aggregate thickness of the housing sleeve is not less than the wall thickness of the cover.

 

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