焊接线能量对X100管线钢用烧结焊剂脱渣性的影响  

Effect of Weld Heat Input on Slag Detachability of Sintered Flux for X100 Pipeline Steel

作　　者：李继红[1] 郑雯[1] 陈飞绸[1] 杨亮[1] 张敏[1] 

机构地区：[1]西安理工大学材料科学与工程学院,西安710048

出　　处：《机械工程材料》2013年第11期40-42,86,共4页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51274162);陕西省基础研究计划项目(2012JM6003);西安市科技计划项目(CX12163)

摘　　要：采用专用焊丝H03MnNi3MoTiB和自行研制的氟碱型烧结焊剂,在不同的焊接线能量下对X100管线钢进行双丝双面埋弧焊接,对焊剂的脱渣性及焊后熔渣的物相进行了分析。结果表明:当焊接材料及焊接方法一定时,在22.47kJ·cm-1的焊接线能量下,脱渣性良好;在不同焊接线能量下焊接后,熔渣中除了存在焊剂的主要组分CaF2、MgO、Al2O3、MnO、SiO2外,还生成了新物相MgAl2O4和Mg2SiO4,虽然熔渣中有尖晶石型化合物生成,但在合适的线能量(22.47kJ·cm-1)下,脱渣性仍相当优异。Using manufactured fluorine alkali type sintered flux and the dedicated wire H03MnNi3MoTiB to weld X100 pipeline steels by double-wire automatic two-sided submerged-arc welding at different heat inputs, and then the detachability of the flux and the phases of slags after welding were analysed. The results show that when welding materials and welding methods were constant, the slag detachability was good at the weld heat input of 22.47 k-1 cm-1. After welding at different weld heat inputs, the main components of the slags consisted of CaF2, MgO, A12 O2, MnO and SiO2, in addition, the new phases MgAl2O3and Mg2 SiO2were obtained. Although there were spinel-type compounds in the slag, its slag detachability was still excellent in the appropriate weld heat input of 22.47 kl . cm 1.

关 键 词：双丝双面埋弧焊 焊剂 熔渣 焊接线能量 脱渣性 

分 类 号：TG423[金属学及工艺—焊接]