焊接残余应力是由于焊接引起焊件不均匀的温度分布，焊缝金属的热胀冷缩等原因造成的，所以伴随焊接施工必然会产生残余应力。 消除残余应力的最通用的方法是高温回火，即将焊件放在热处理炉内加热到一定温度（Ac1以下）和保温一定时间，利用材料在高温下屈服极限的降低，使内应力高的地方产生塑性流动，弹性变形逐渐减少，塑性变形逐渐增加而使应力降低。 焊后热处理对金属抗拉强度、蠕变极限的影响与热处理的温度和保温时间有关。焊后热处理对焊缝金属冲击韧性的影响随钢种不同而不同
局部焊后热处理 Local post weld heat treatment
焊后热处理要求 post weld heat treatment requirements
焊后热处理温度 temperatures for post weld head treatment
焊缝焊后热处理 post weld heat treatment
模拟焊后热处理 SPWHT
连接的焊后热处理 post weld heat treatment of connections
焊接后热处理 PWHT ; post weld heat treatment ; postweldheattreatmentPWHT
焊后不热处理 no heat treatment after welding
Based on resistance spot welding tests for stainless steel sheets made of 0Cr15Ni5Cu2Ti, welding technology and welding parameters are properly established , and the effect of postweld heat treatment regimes on the properties of welding joint is revealed .
通过对0Cr15Ni5Cu2Ti不锈钢板材电阻点焊工艺的试验研究，确定了合理的焊接工艺和焊接工艺参数，并探讨了焊后热处理条件对焊接接头性能的影响。
参考来源 - 0Cr15Ni5Cu2Ti不锈钢电阻点焊工艺 STUDY ON RESISTANCE SPOT WELDING TECHNOLOGY FOR 0Cr15Ni5Cu2Ti STAINLESS STEEL·2,447,543篇论文数据，部分数据来源于NoteExpress
强调了焊接球罐焊后热处理的必要性。
The necessarily of post-weld heat treatment of spherical tanks was emphasized.
只要有可能，制造的容器应在一个封闭炉中进行整体焊后热处理。
The fabricated vessel shall be post-weld heat treated as a whole in an enclosed furnace whenever possible.
然而至今各国关于局部焊后热处理的评定标准仍存在很大的差异。
However up to now the assessing criteria in local PWHT are still very different from one code to another.
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