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问:什么是焊后热处理? 答:为了改善焊接接头的性能,消除残余应力等有害影响,焊后,将焊件或其局部均匀加热到相变点以下某一适当温度,并保温一定时间,然后再均匀冷却。这种处理过程称为“焊后热处理”。焊后热处理一般包括:消除应力退火、完全退火、固溶处理、正火、正火回火、淬火回火(调质)、回火和低温消除应力等等。焊后热处理常常在加热炉内进行,也可在施工现场进行整体热处理(不用加热炉)。
Q: What is the post-weld heat treatment? A: In order to improve the performance of welded joints, to eliminate the harmful effects of residual stress, after welding, the weldment or part of the uniform heating to a suitable temperature below the phase transition point and heat a certain time, Then cool evenly. This process is called “post-weld heat treatment.” Postweld heat treatment generally includes: stress relief annealing, complete annealing, solution treatment, normalizing, normalizing and tempering, quenching and tempering (tempering), tempering and low temperature to eliminate stress and so on. Post weld heat treatment is often carried out in the furnace, but also the overall heat treatment at the construction site (without furnace).