神钢309LCb不锈钢药芯焊丝单层堆焊工艺试验  

Single-layer surfacing welding process test for KCO 309LCb stainless steel flux cored wire

作　　者：王天先 邱伏礼 张凯 刘宝剑 WANG Tianxian;QIU Fuli;ZHANG Kai;LIU Baojian(Qingdao LS Heavy Machinery Equipment Co.,Ltd.,Qingdao 266426,China)

机构地区：[1]青岛兰石重型机械设备有限公司,山东青岛266426

出　　处：《压力容器》2021年第3期12-17,79,共7页Pressure Vessel Technology

摘　　要：采用日本神钢产CO_(2)气体保护焊用309LCb不锈钢药芯焊丝,在不同焊道搭接量下进行单层堆焊焊接工艺试验。结果表明,焊道搭接量2~3 mm可使单层堆焊过程稳定,焊接工艺性良好,堆焊层距表面3 mm范围内化学成分和铁素体数、金相组织、硬度值、晶间腐蚀、氢剥离以及各项理化性能满足要求。The single-layer surfacing welding process test was carried out with 309LCb stainless steel CO 2 gas shielded flux cored wire from Japan KCO under different weld pass overlap quantities.The results show that the 2~3 mm weld pass overlap quantity could make the single-layer surfacing welding process stable and the weldability is good,the chemical composition and ferrite number,metallographic structure,hardness value,intergranular corrosion,hydrogen disbonding and various physical and chemical properties of the surfacing layer within 3 mm from the surface meet the requirements.

关 键 词：药芯焊丝 堆焊 焊道搭接量 晶间腐蚀 氢致剥离 

分 类 号：TH49[机械工程—机械制造及自动化] TG42[金属学及工艺—焊接]