304不锈钢管焊接处理过程,经常会产生焊接焊接残余变形的现象,下面小编为大家讲解一下:产生上述现象的原因:热输入引起材料不均匀局部加热,使焊缝区熔化,而熔池毗邻的高温区材料的热膨胀则受到周围材料的限制,产生不均匀的压缩塑性变形。
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