TIAN Guoping, ZHANG Song, LIANG Zhifang, et al.Deformation Control of FSW and MIG Welding of Aluminum Alloy Shell[J].Electric Welding Machine, 2022, 52(7): 100-104.
TIAN Guoping, ZHANG Song, LIANG Zhifang, et al.Deformation Control of FSW and MIG Welding of Aluminum Alloy Shell[J].Electric Welding Machine, 2022, 52(7): 100-104. DOI: 10.7512/j.issn.1001-2303.2022.07.14.
Deformation Control of FSW and MIG Welding of Aluminum Alloy Shell
The aluminum alloy shell (5A06 H112, inner diameter ,Φ,2 110,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=33182540&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=33182534&type=,3.38666677,2.45533323,×12,,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=33182547&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=33182543&type=,2.03200006,2.45533323, mm) is welded by the combination of friction stir welding (FSW) and consumable inert gas welding (MIG), which was rolled bending from 20 mm thick wall plate to inner diameter ,Φ,2 102 mm, FSW butt welding of barrel body and MIG welding of a large number of accessories of the shell. But the inner diameter is deformed greatly and the deformation is irregular. Which caused the residual wall thickness can't meeting the design requirements of 12 mm after finish machining to inner diameter of ,Φ,2 110 mm. It can’t meet the structural strength requirements if the thickness is too large or less than 12 mm. The control of wall thickness is very important to the safety of the whole system. Therefore, by analyzing the deformation law of FSW after welding, adjusting the welding thickness of one side, changing the welding sequence and optimizing the chemical assembly scheme can reduce the concave deformation of one side after welding from the maximum 10 mm to less than 2 mm; by analyzing the deformation law of accessories after MIG welding, optimizing the assembly and welding sequence, chemical assembly scheme and finishing process scheme, the qualified rate of wall thickness after barrel machining is increased from 23% to 100%.
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