HQ-70钢冷裂敏感性的研究  

STUDY OF COLD CRACKING SUSCEPTIBILITY OF HQ-70 STEEL

作　　者：罗志昌[1] 姚钦[1] 田燕[1] 张伟明[1] 郎毅 侯丽 

机构地区：[1]清华大学 [2]鞍钢钢研所

出　　处：《焊接学报》1990年第3期169-174,共6页Transactions of The China Welding Institution

摘　　要：采用铁研试验及插销试验法对HQ—70钢的冷裂敏感性进行了研究,绘制了该钢的冷裂图,并对其冷裂敏感性作了评价.推荐该钢防止冷裂的安全预热温度为125℃。The cold cracking susceptibility of HQ-70 steel was studied by use of theTEKKEN test and Implant test.The cold cracking diagrams of this steel weredrawn,and its susceptibility to cotd clacking was evaluated.It is suggestedthat the safe preheating temperature for avoiding the emergence of cold crackis 125℃.

关 键 词：低合金钢 高强度钢 焊接冷裂 

分 类 号：TG142.41[一般工业技术—材料科学与工程]