In welding process, the over range of the interpass temperature can be avoided by the control of heat treatment equipment and by the check of the far-infrared temperature instrument.

• 并指出焊接过程中层间温度的控制,在用热处理控制柜自动控制的同时,再采用便携式远红外测温仪对层间温度进行校核,可以避免层间温度超标现象。