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U-shaped ring for gas generator and its manufacturing process

A gas generator, U-shaped technology, applied in the petroleum industry, engine components, engine sealing, etc., can solve problems such as difficulties, decreased U-shaped ring strength, increased production costs, etc., to solve the problem of poor stress performance and variable welding times Less, the effect of improving the precision of finished products

Inactive Publication Date: 2018-04-10
于宗兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The U-shaped ring mainly plays the role of sealing the inner wall and the outer wall, but the sealing effect of the existing U-shaped ring is not ideal, and there are problems of difficult maintenance
The main reason is that the existing U-shaped ring is spliced ​​by multiple fan-shaped components. There are 3 or more seams on the U-shaped ring. The number of seams is too large, resulting in a decrease in the strength of the U-shaped ring.
When used on a gas generator, the working environment of the U-shaped ring needs to repeat the heating-cooling process repeatedly. The U-shaped ring of the existing structure has poor strength and cannot meet the demand.
After the U-shaped ring is used for a long time, the seam is easy to cause corrosion, which reduces the sealing performance of the U-shaped ring. However, due to too many welds, the existing U-shaped ring often cannot quickly find the leaking part during maintenance, resulting in maintenance. difficulty
[0004] Secondly, in the existing U-shaped ring production process, it is necessary to cut a plurality of fan-shaped components on a rectangular steel plate. Due to the irregular shape of the fan-shaped components, more steel plate scraps will be generated during the cutting process, resulting in waste. Increased production costs
Moreover, the existing U-shaped ring process takes a long time and has low production efficiency
The main reason is that it is difficult to obtain fan-shaped components by cutting them on the steel plate. The fan-shaped components need to be cut one by one. Welding takes a long time
The existing U-shaped ring is formed by cold pressing. When the U-shaped ring is applied to the gas generator, the temperature in the gas generator can reach up to 1000°C. The U-shaped ring needs to be used repeatedly in the working environment of heating and cooling. The strength of cold-formed U-rings cannot meet the demand, and the service life is short
After the U-shaped ring is installed on the gas generator and used, if the U-shaped ring needs to be replaced, the production must be stopped, resulting in economic losses

Method used

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  • U-shaped ring for gas generator and its manufacturing process
  • U-shaped ring for gas generator and its manufacturing process
  • U-shaped ring for gas generator and its manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] refer to Figure 1~3 , In this embodiment, the U-shaped ring is used for the gas generator, and the U-shaped ring body 1 is made of a strip-shaped steel plate made of Q235R material. The elongated steel plate is 1600 mm long, 150 mm wide, and 10 mm thick, including a U-shaped ring body 1. The U-shaped ring body 1 is annular. A weld 2 is provided on the U-shaped ring body 1. The longitudinal section 3 of the U-shaped ring body 1 is U-shaped.

[0029] refer to Figure 1~5 , the U-shaped ring for the present embodiment gas generator, its manufacturing process, comprises the following steps:

[0030] a) Select a long strip steel plate made of Q235R, use a rolling machine to roll the long strip steel plate into a plane ring, and then butt the two ends of the long strip steel plate, and weld them to form a weld 2, so that the longitudinal section is a plane The plane ring of 4;

[0031] b) Heating the planar ring 4 with a heating punch at a heating temperature of 600-1000...

Embodiment 2

[0034] refer to Figure 1~3 , In the present embodiment, the U-shaped ring is used for the gas generator, and the U-shaped ring body 1 is made of a strip-shaped steel plate made of 430 stainless steel. The strip-shaped steel plate is 1300mm long, 150mm wide, and 8mm thick. The U-shaped ring body 1 is annular, and a weld 2 is arranged on the U-shaped ring body 1. The longitudinal section 3 of the U-shaped ring body 1 is U-shaped, and the U-shaped The longitudinal section 3 is bent U-shaped.

[0035] refer to Figure 1~5 , the U-shaped ring for the present embodiment gas generator, its manufacturing process, comprises the following steps:

[0036] a) Select a long steel plate made of 430 stainless steel, and use a rolling machine to roll the long steel plate into a plane ring, then butt the two ends of the long steel plate, and weld them to form a weld 2, and obtain the longitudinal section as planar plane ring 4;

[0037] b) Heating the flat ring with a heating punch at a h...

Embodiment 3

[0040] refer to Figure 1~3 , In this embodiment, the U-shaped ring is used for the gas generator, and the U-shaped ring body 1 is made of a strip-shaped steel plate made of Q235B material. The elongated steel plate is 1800mm long, 150mm wide, and 10mm thick, including a U-shaped ring body 1, which is annular, and a weld 2 is provided on the U-shaped ring body 1, and the longitudinal section 3 of the U-shaped ring body 1 is U-shaped.

[0041] refer to Figure 1~5 , the U-shaped ring for the present embodiment gas generator, its manufacturing process, comprises the following steps:

[0042]a) Select a long strip steel plate made of Q235B material, use a rolling machine to roll the long strip steel plate into a plane ring, and then butt the two ends of the long strip steel plate, and weld them to form a weld 2, so that the longitudinal section is a plane The plane ring of 4;

[0043] b) Heating the flat ring with a heating punch at a heating temperature of 800-900°C, forming...

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Abstract

The invention provides a U-shaped ring for a gas producer and a manufacturing technology of the U-shaped ring, and belongs to the technical field of machining of U-shaped rings. A U-shaped ring body (1) is formed by bending and rolling an elongated steel plate and is provided with only one weld joint (2); and the longitudinal section of the U-shaped ring body (1) is U-shaped. An elongated steel plate which is made of a metal material is rolled into a ring by an edge rolling machine, and after the weld joint is welded, a planar ring of which the longitudinal section is a plane is obtained; the planar ring is heated by a heating punching machine, the heating temperature is 600-1000 DEG C, the longitudinal section of the planar ring is stamped into a U-shaped longitudinal section, and a U-shaped ring body (1) is formed; and the U-shaped ring body (1) is slowly cooled down in air until the temperature of the U-shaped ring body (1) is reduced to room temperature so as to obtain the U-shaped ring. The U-shaped ring is high in sealing property, high in strength and convenient to repair; and by the manufacturing technology of the U-shaped ring, the working time can be shortened obviously, the machining speed is increased, loss on leftover materials is avoided, and the cost is saved.

Description

technical field [0001] The invention belongs to the technical field of U-shaped ring processing, and in particular relates to a U-shaped ring for a gas generator and a manufacturing process thereof. Background technique [0002] In order to play a role of heat insulation, the existing gas generator is mostly designed as a double-layer structure of the inner wall and the outer wall, and the top and bottom ends of the inner wall and the outer wall are sealed by U-shaped rings, and then the gas generator is connected to the support . The existing U-shaped ring preparation process adopts cutting on a rectangular steel plate to obtain multiple identical fan-shaped components, placing multiple identical fan-shaped components on the same horizontal plane, splicing them into a ring, and welding the spliced ​​seams. A flat ring is formed, and then the flat ring is cold-rolled with a cold rolling mill to obtain a U-shaped ring. [0003] The U-shaped ring mainly plays the role of sea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/06C10J3/72B23P15/00
CPCB23P15/00C10J3/72F16J15/06
Inventor 于宗兵
Owner 于宗兵
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