Post weld heat treatment process to eliminate welding distortion of large structural parts

doi:10.13251/j.issn.0254-6051.2022.02.042

Abstract

Abstract: Distortion distribution of large welded structural parts before and after post weld heat treatment was simulated by using finite element software. The results show that the maximum distortion of the welded structural parts is mainly concentrated at the middle parting flange. By simulating the overall distortion and the distortion distribution of the structural flange, the results show that after post weld heat treatment at 650 ℃ for 6 h, the overal distortion of the structural parts is small, and the distortion distribution of the structural flange shows a good mirror symmetry with that of the welded one, which effectively improves the post welding distortion and is beneficial to the size stability of the structural parts.

Key words: large-scale welded structural parts, finite element simulation, welding distortion, heat treatment process, residual stress

CLC Number:

TG404

Zhang Jingang, Chao Lining, Wang Qiang, Yang Xiaolong, Zhou Xinyi, Tang Jiarui. Post weld heat treatment process to eliminate welding distortion of large structural parts[J]. Heat Treatment of Metals, 2022, 47(2): 236-242.

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