电焊机2012，Vol.42Issue(7)：1-6,6.
960MPa级工程机械用钢焊接性能试验研究
Study on the welding performance testing of 960 MPa grade machinery steel
张楠 1董现春 1刘宏 1牟淑坤 1陈延清 1章军1
作者信息
摘要
Abstract
The welding performance testing of 960 MPa grade machinery steel was systematically investigated by following methods; drawing the curve of CCT,testing the cold cracking sensitivity of welding and effect of the cooling time from 800 ℃ to 500℃(t8/5) on toughness variation of the CGHAZ.Tne results showed that.the cold cracking propensity of welding could he avoided by raising preheating temperature to more than 200 ℃ in engineering (plate thickness 20 mm),that was compatible with the solid wire GHS-90 for φ(Ar) 80%+φ (CO2)20% shielded arc welding;the toughness variation of the CCHAZ was rapidly decreased while the t8/5 was up to 20 s;though made the reasonable welding process,the 960 MPa grade machinery steel could be used in engineering field,successfully.关键词
焊接性能/预热温度/焊接裂纹敏感性/CGHAZKey words
welding performance/preheating temperature/cracking sensitivity of welding/CGHAZ分类
矿业与冶金引用本文复制引用
张楠,董现春,刘宏,牟淑坤,陈延清,章军..960MPa级工程机械用钢焊接性能试验研究[J].电焊机,2012,42(7):1-6,6.
