摘要
采用优化后的单枪耦合电弧AA-TIG焊枪,以SUS304不锈钢板材作为试验材料进行了焊接试验,对比了单枪耦合电弧AA-TIG焊与TIG焊电弧和焊缝成形的不同,研究了主要工艺参数对单枪耦合电弧AA-TIG焊焊缝的影响,并分析了单枪耦合电弧AA-TIG焊对接接头性能.结果表明,氧气流量、钨极间距、电弧长度对单枪耦合电弧AA-TIG焊熔深有重要影响.与普通TIG焊相比,在相同的总电流下,单枪耦合电弧AA-TIG焊焊缝变窄,熔深增加,焊缝性能良好.12 mm厚SUS304不锈钢板,单道焊缝熔深可超过11 mm,深宽比达到1.3,显著提高了生产效率.
By using the improved welding torch,coupled arc AA-TIG welding experiments were carried out with SUS304 plate as the base metal. The differences of arc morphology and weld shape between AA-TIG welding and traditional TIG was compared. Meanwhile the effects of major parameters to AA-TIG weld bead as well as the weld mechanical properties were investigated. The results showed that the welding parameters including oxygen flowrate,electrode spacing and arc length had significant influences on the weld penetration of coupled arc AA-TIG welding. Under the same total current,the welding bead of coupling AA-TIG was narrower and deeper when comparing with conventional TIG welding. The weld presented better mechanical properties. For 12 mm thickness SUS304 stainless steel plate,the weld penetration of one pass exceeded 11 mm,the weld depth/width ratio reached 1. 3. The welding productivity was improved dramatically.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2017年第10期47-50,共4页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(51205179
51265029)
