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

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...

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.

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