TS980QC钢焊接工艺试验  

Welding procedure test of TS980QC steel

作　　者：张鸿 李小宇 周军 张春波 ZHANG Hong;LI Xiaoyu;ZHOU Jun;ZHANG Chunbo(Bohai Shipbuilding Heavy Industry Co.,Ltd.,Huludao 125004,China;Harbin Welding Institute Co.,Ltd.,Harbin 150028,China)

机构地区：[1]渤海船舶重工有限责任公司,辽宁葫芦岛125004 [2]哈尔滨焊接研究院有限责任公司,黑龙江哈尔滨150028

出　　处：《电焊机》2019年第8期83-86,共4页Electric Welding Machine

摘　　要：采用φ(Ar)80%+φ(CO2)20%的熔化极气体保护焊接方法,对8 mm厚TS980QC钢板进行焊接试验,研究了材料抗冷裂敏感性、焊接热输入对焊接质量的影响,以及焊接接头综合质量。结果表明:预热温度高于50℃时,TS980QC高强钢焊接可以避免冷裂纹产生;该钢对焊接热输入较为敏感,过高或过低的热输入均会导致性能下降;试验选用的焊丝在合适工艺条件下能较好地匹配TS980QC钢的性能。By using MAG welding withφ(Ar)80%+φ(CO2)20%shielded gas,the welding procedure test of 8 mm thick TS980QC steel plate is carried out to study the cold crack resistance sensitivity of material,the influence of welding heat input on welding quality and the comprehensive quality of welded joint.The results show that the cold crack in the welding of TS980QC high-strength steel(8 mm thick)can be avoided at a preheating temperature over 50℃.This steel is sensitive to welding heat input,and its performance decreases when the heat input is too high or too low.The welding wire selected in the experiment can match the performance of TS980QC high strength steel when using the appropriate technological conditions.

关 键 词：980钢 冷裂纹 热输入 

分 类 号：TG457.11[金属学及工艺—焊接]