摘要
详细研究了自保护药芯焊丝飞溅的形成机理及其影响因素。高速摄影观察表明,自保护药芯焊丝在焊接过程中的飞溅主要有以下三种形式,电弧力引起的大颗粒飞溅、气泡放出型飞溅和气体爆炸引起的飞溅。通过混料回归试验分析了药粉中氟化物、氧化物、碳酸盐、脱氧剂、合金元素对焊接飞溅的影响规律。结果表明,氟化物和碳酸盐对飞溅的影响较大,氧化物、脱氧剂和合金元素对飞溅的影响较小。
The spatter formation mechanism of self-shielded flux cored wire has a remarkable different with other welding materials because of its speciality in wire’s construction and welding method. The mechanism and influencing factors of welding spatter are studied. High-speed photographs indicate that there are mainly three types of spatter in self-shielded flux cored arc welding, which are big spatter caused by arc force, bubble released spatter and gas explosion spatter. Five flux ingredients, which influence the welding spatter greatly, are investigated by means of spatter tests using mixing material regression method. Experimental result shows that the effect of fluorides and carbonates is greater than that of oxides, killing agents and alloys.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2007年第8期108-112,共5页
Transactions of The China Welding Institution
关键词
自保护药芯焊丝
飞溅
形成机理
self-shielded flux cored wire
spatter
formation mechanism