用碳当量CEN确定高强钢焊接预热温度  

DETERMINATION OF PREHEATING TEMPERATURE BY CARBONEQUIVALENT (CEN) FOR HIGH STRENGTH STEEL WELDING

作　　者：曹继明 

机构地区：[1]中建一局安装公司

出　　处：《焊接》1995年第1期17-20,24,共5页Welding & Joining

摘　　要：用碳当量CEN作为高强钢冷裂纹判据与Pc、Pw和CE_(HW)相比,具有精度高、适用范围广等优点.用CEN确定600MPa级调质钢N-TUF50的临界预热温度与用Pc确定的预热温度和斜Y形坡口焊接裂纹试验结果吻合.Carbon equivalent (CEN) is chosen as a criterion for evaluation of cold cracking when high strength steel is welded. It is found that CEN possesses advantages of accuracy and wide suitability as compared with PC, Pw, and CE11W. The critical preheating temperature of 600MPa QT steel N - TUF 50 determined with CEN is consistent with that determined both by PC and by Y - groove restraint cracking test.

关 键 词：碳当量 焊接 裂纹 预热温度 高强度钢 

分 类 号：TG457.11[金属学及工艺—焊接]