A method for vacuum electron beam welding of an aluminum alloy metal diaphragm storage tank

A vacuum electron beam and electron beam technology, applied in electron beam welding equipment, welding equipment, metal processing, etc., can solve the problems of post-welding weld seam strength reduction, weld seam strength reduction, poor fusion, etc., to reduce the number of repairs, Avoid weld cracking and avoid the effect of excessive butt joint gap

Active Publication Date: 2021-10-15
XIAN SPACE ENGINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The main problem of the current aluminum alloy electron beam welding is the existence of pores and cracks, and for the single-lock bottom butt joint structure, it is prone to defects of poor fusion at the root, resulting in a decrease in weld strength. At the same time, due to the three electron beams of the aluminum alloy metal diaphragm tank The welds are relatively close to each other, resulting in a greater mutual influence between the welds. If the welding sequence is unreasonable, the strength of the weld after welding will decrease, and leakage will occur during the hydraulic test of the storage tank.

Method used

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  • A method for vacuum electron beam welding of an aluminum alloy metal diaphragm storage tank
  • A method for vacuum electron beam welding of an aluminum alloy metal diaphragm storage tank

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Process the support ring, metal diaphragm, liquid chamber shell and air chamber shell to ensure the butt joint size of the electron beam weld. The butt joint gap between the support ring and the metal diaphragm electron beam weld is 0.2mm, and the lap gap of the lock bottom is 0.2mm ;The butt joint gap between the support ring and the gas chamber shell electron beam weld is 0.1mm, and the lap gap of the lock bottom is 0.2mm; mm.

[0038](2) Use the first electron beam welder to clamp the metal diaphragm, the support ring and the air cavity shell, and make the air cavity shell be located below. Adjust the electron gun to the horizontal position to prepare for horizontal welding. Firstly, the support ring and the metal diaphragm are segmented and segmented by the electron beam tack welding method. The number of tack welding segments is 18; the length of each segment is 50mm; secondly, the electron beam segmental tack welding is used The support ring and the air cavit...

Embodiment 2

[0041] (1) Process the support ring, metal diaphragm, liquid chamber shell and air chamber shell to ensure the butt joint size of the electron beam weld. The butt joint gap between the support ring and the metal diaphragm electron beam weld is 0.4mm, and the lap gap of the lock bottom is 0.4mm ;The butt joint gap between the support ring and the gas chamber shell electron beam weld is 0.3mm, and the lap gap of the lock bottom is 0.3mm; mm.

[0042] (2) Use the first electron beam welder to clamp the metal diaphragm, the support ring and the air cavity shell, and make the air cavity shell be located below. Adjust the electron gun to the horizontal position to prepare for horizontal welding. Firstly, the support ring and the metal diaphragm are segmented by the electron beam segmental tack welding. The number of tacking welding segments is 12; the length of each segment is 30mm; secondly, the electron beam segmental tacking welding is used The support ring and the air chamber s...

Embodiment 3

[0045] (1) Process the support ring, metal diaphragm, liquid chamber shell and air chamber shell to ensure the butt joint size of the electron beam weld. The butt joint gap between the support ring and the metal diaphragm electron beam weld is 0.5mm, and the lap gap of the lock bottom is 0.5mm The butt gap between the support ring and the electron beam welding seam of the air chamber shell is 0.5mm, and the lap gap of the lock bottom is 0.5mm; mm.

[0046] (2) Use the first electron beam welder to clamp the metal diaphragm, the support ring and the air cavity shell, and make the air cavity shell be located below. Adjust the electron gun to the horizontal position to prepare for horizontal welding. Firstly, the support ring and the metal diaphragm are segmented by electron beam segmental tack welding. The number of tacking welding segments is 15; the length of each segment is 30mm; secondly, the electron beam segmental tacking welding is used The support ring and the air cavit...

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Abstract

A method for vacuum electron beam welding of an aluminum alloy metal diaphragm storage tank, the steps are as follows: (1) processing two hemispherical electron beam welding fixtures, on which six gaps are evenly distributed; (2) using the first electron beam welding fixture Clamp support ring, metal diaphragm and air cavity shell; (3) Firstly, segmental positioning welding support ring and metal diaphragm, followed by positioning welding support ring and air cavity shell through tooling gap, and finally electron beam welding support ring and metal diaphragm throughout the week ; (4) Remove the first electron beam welding tool, clamp all the components on the second electron beam welding tool, the liquid cavity shell is located below, firstly through the tooling gap positioning welding support ring and the liquid cavity shell, secondly Electron beam welding of the supporting ring and the gas cavity housing throughout the week; (5) Remove the second electron beam welding tool, use the first electron beam welding tool to clamp the product, and electron beam welding the supporting ring and the liquid cavity housing throughout the week. The invention improves the qualified rate of the internal quality of the electron beam welding seam of the aluminum alloy metal diaphragm tank and the strength of the welding seam.

Description

technical field [0001] The invention relates to a vacuum electron beam welding method for an aluminum alloy metal diaphragm storage tank, which belongs to the field of mechanical processing. Background technique [0002] The main problem of the current aluminum alloy electron beam welding is the existence of pores and cracks, and for the single-lock bottom butt joint structure, it is prone to defects of poor fusion at the root, resulting in a decrease in weld strength. At the same time, due to the three electron beams of the aluminum alloy metal diaphragm tank The welds are relatively close to each other, resulting in greater mutual influence between the welds. If the welding sequence is unreasonable, the strength of the weld after welding will decrease, and leakage will occur during the hydraulic test of the tank. Contents of the invention [0003] The technical problem of the present invention is: to overcome the deficiencies in the prior art, and to provide a method for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/06B23K37/04B23K101/10
CPCB23K15/0053B23K15/06B23K37/0435B23K2101/10
Inventor 王英杰殷满虎
Owner XIAN SPACE ENGINE CO LTD
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