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A method for gas protection of the back of the bellows diaphragm weld seam

A gas protection and bellows technology, applied in welding equipment, welding accessories, laser welding equipment and other directions, can solve the problems of high cost and low operation efficiency, and achieve the effect of strong adaptability, simple operation and high efficiency

Active Publication Date: 2021-12-07
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Building an integral vacuum chamber can solve this problem, but this method has high cost and low operation efficiency, and a more convenient and efficient method of welding back gas protection is needed

Method used

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  • A method for gas protection of the back of the bellows diaphragm weld seam
  • A method for gas protection of the back of the bellows diaphragm weld seam
  • A method for gas protection of the back of the bellows diaphragm weld seam

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Embodiment Construction

[0030] Such as Figure 1~3 , in this embodiment, the method for gas protection on the back of the weld seam of the bellows diaphragm includes the following steps:

[0031] S1, put the first piece of diaphragm 1 on the bottom of the inner circular welding seam back protection tool; adjust the position of the first air inlet pipe 5 and the first air outlet pipe 6, and place the Place the first gasket 3 and the second gasket 4; place the second diaphragm 2 in the inner circle weld back protection tool; press the inner circle weld back protection fixture.

[0032] Wherein, the first air intake pipe 5 is located in the butt joint gap of one end of the first gasket 3 and the second gasket 4, and the first air outlet pipe 6 is located in the butt joint of the other end of the first gasket 3 and the second gasket 4. in the gap. Preferably, the gasket is mainly used for supporting the back space of the diaphragm.

[0033] S2, filling the protective gas from the first air intake pipe...

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Abstract

The invention discloses a gas protection method for the back of the weld seam of a bellows diaphragm, comprising: installing a first diaphragm, a second diaphragm, a first gasket and a second gasket; The inner circular weld is welded, and the protective gas is filled through the first air intake pipe during the welding process, and a set of diaphragm pairs is obtained by welding; N sets of diaphragm pairs are assembled in the outer circular weld back protection tooling, and the outer circular weld back protection is pressed tightly. Tooling and fixture; the protective gas is filled from the second air intake pipe, and the bellows is obtained by welding along the outer circular weld seam of the bellows diaphragm. The invention utilizes reasonable design to realize gas protection on the back of the welded seam of the bellows diaphragm, effectively improves the forming quality of the diaphragm welded seam, and has simple operation and strong adaptability.

Description

technical field [0001] The invention relates to the technical field of bellows welding, in particular to a gas protection method for the back of a bellows diaphragm weld seam. Background technique [0002] Welded bellows is an elastic element commonly used in aerospace systems. It is formed by welding a certain number of metal diaphragms through inner and outer circles. Welding is a key process in the manufacture of this type of bellows, and the quality of welding directly determines the performance of the bellows. During the welding process, in order to obtain excellent weld performance, it is generally necessary to protect the front and back of the weld with gas protection. It is easy to achieve gas protection on the front of the diaphragm weld, but it is more difficult to implement gas protection on the back of the weld. [0003] With the application and popularization of diaphragms such as high-temperature alloys and titanium alloys, the diaphragm welding of such materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/32B23K10/02B23K26/70
CPCB23K9/32B23K10/02B23K26/702
Inventor 许辉尹玉环赵慧慧方瑜崔凡夏佩云汤化伟余果吴伟包云峰
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY