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对于承载大、压力容器等重要结构件,焊接应力应该如何消除?

问答题
2022-02-28 20:40
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正确答案
首先在结构设计时,应选用塑性好的材料,要避免使焊缝密集交
叉,避免使焊缝面过大,和焊缝过长。其次,在施焊中应确定正确的焊接次序。再次,当需要较彻底消除焊接应力时,可采用焊后去应力退火方法来实现,此时需将焊件加热至500-600摄氏度左右,保温后缓慢冷却至室温。

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