大厚度Q370R焊接工艺  

Research on welding technology of large thickness Q370R

作　　者：白安民 

机构地区：[1]中信重工机械股份有限公司铆焊构件厂焊接工艺研究所,河南洛阳471039

出　　处：《电焊机》2016年第7期83-85,共3页Electric Welding Machine

摘　　要：Q370R钢的Ceq约为0.38%-0.48%,焊接性能良好,不需预热,且Q370R钢板要满足较高强度和韧性,需加入Nb、V、Ti与碳、氮形成碳化物、氮化物及碳氮化物。采用埋弧自动焊和CO_2气保护焊,焊丝分别选择H10Mn2 φ 4和ER55-D2,选择合适的坡口形式,并进行焊接工艺评定,制定合理的焊接工艺规范。焊后对进行外观检查、无损检测,去应力退火,退火后进行UT、MT探伤,达到了AWS D1.1标准要求。Q370R Steel Ceq is 0.38%-0.48%.The welding performance is good,without preheating,Q370R steel plate needs to meet the higher strength and toughness,adding Nb,V,Ti and carbon and nitrogen form carbide,nitride and carbonitride.Using submerged arc automatic welding and CO2 gas shielded welding, choose welding wire H 10Mn2 Ф 4 and ER55-D2 respectively, select the appropriate groove form, and the welding procedure qualification, formulate the reasonable welding procedure specification.After welding the test pieces for appearance inspection, nondestructive testing, stress annealing, after annealing for UT, MT detection, to achieve the D 1.1 AWS standard requirements.

关 键 词：Q370R 埋弧焊 CO2保护焊 

分 类 号：TG457.11[金属学及工艺—焊接]