船用LNG储罐高锰奥氏体低温钢埋弧焊焊丝焊剂CHW-SMn/CHF610的研制  

Development of Submerged Arc Welding Wire Flux CHW-SMn/CHF610 for High Manganese Austenitic Low Temperature Steel for Marine LNG Storage Tank

作　　者：杨飞[1] 张毅 段然 白昶 毛兴贵[1] 罗宏 陈雪丹 Yang Fei;Zhang Yi;Duan Ran;Bai Chang;Mao Xinggui;Luo Hong;Chen Xuedan(Atlantic China Welding Consumables,INC,Sichuan,643000;Sichuan University of Science and Engineering,Sichuan,643000)

机构地区：[1]四川大西洋焊接材料股份有限公司,四川643000 [2]四川轻化工大学,四川643000

出　　处：《当代化工研究》2024年第21期85-87,共3页Modern Chemical Research

基　　金：工业和信息化部“超超临界火电机组材料生产应用示范平台建设项目”(项目编号:TC210H022)。

摘　　要：通过实验研制了一种-196℃超低温船用LNG储罐高锰奥氏体低温钢埋弧焊焊丝焊剂CHW-SMn(φ4.0)/CHF610,焊剂为氟碱型CaF_(2)-CaO-MgO-Al_(2)O_(3)渣系,碱度BⅡW在2.5~3.5。该焊丝焊剂组合具有优良的焊接工艺性能,焊接电弧稳定,焊缝脱渣容易,焊缝成形美观。该焊丝焊剂组合焊缝金属力学性能稳定,屈服强度516 MPa、抗拉强度735 MPa、延伸率49.5%,-196℃冲击功KV2均值为125 J,且杂质含量低,具有良好的抗裂纹性能,完全满足超低温高锰钢LNG储罐焊缝金属的要求。A flux CHW-SMn(φ4.0)/CHF610 for submerged arc welding of high manganese austenitic low temperature steel in-196℃ultra-low temperature marine LNG storage tank was developed.The flux was a fluorine-alkali CaF_(2)-MgO-CaO-Al_(2)O_(3)slag system,and the basicity BIIW was 2.5~3.5.The welding wire and flux combination has excellent welding process performance,stable welding arc,easy slag removal from the weld,and beautiful weld formation.The welding wire flux combination has stable mechanical properties of the weld metal,with a yield strength of 516 MPa,tensile strength of 735 MPa,elongation of 49.5%,and an average impact energy KV2 of 125 J at-196℃.It also has low impurity content and good crack resistance,fully meeting the requirements of weld metal for ultra-low temperature high manganese steel LNG storage tanks.

关 键 词：高锰奥氏体低温钢 焊丝焊剂 焊接材料 冲击韧性 

分 类 号：TG42[金属学及工艺—焊接]