石化装置用9Cr1Mo钢的焊接工艺研究  

WELDABILITY of 9CrlMo STEEL USED FOR PETROCHEMICAL EQUIPMENT

作　　者：黄云庆[1] 王振家[1] 陈伯蠡[1] 

机构地区：[1]清华大学

出　　处：《焊接》1995年第12期2-6,17,共6页Welding & Joining

摘　　要：9Cr1Mo钢焊前预热与否可用临界t_(8/5)=11s为判据,当线能量和板厚改变时,可由线能量、板厚与预热温度的关系曲线来选择预热温度.其焊后热处理,规定回火参数[P]是合理的,[P]=20.6～21.3可满足要求.回火温度(760～790)℃,保温时间2h,回火脆性区间为(450～550)℃.Preheating or not for welding 9CrlMo steel can be fixed by cri-teriont t8/5 = 11 s, the suitable preheating temperautre comes from the relation curves of heat input, plated thickness and the need temperature to preheat. The tempering factor is used to determine postheating of weld for this steel and (P) = 20.6 to 21.3 is good and enough. Experimental results show that (760 - 790) ℃ tempering temperature and 2 h. keeping time are procedure parameters and (450 - 550) ℃ is temper embrittlement temperature zone.

关 键 词：钢 焊接 热处理 焊后处理 石油化工装置 

分 类 号：TG402[金属学及工艺—焊接] TG441.8