304不锈钢K-TIG焊接工艺  

K-TIG welding process of 304 stainless steel

作　　者：唐君才 陈和 魏占静 Tang Juncai;Chen He;Wei Zhanjing(Zhuhai Riland Welding Automation Co.,Ltd.,Zhuhai 519075,Guangdong,China;Shenzhen Riland Industry Group Co.,Ltd.,Shenzhen 518000,Guangdong,China)

机构地区：[1]珠海瑞凌焊接自动化有限公司,广东珠海519075 [2]深圳瑞凌实业股份有限公司,广东深圳518000

出　　处：《机械制造文摘（焊接分册）》2022年第3期37-40,共4页Welding Digest of Machinery Manufacturing

摘　　要：通过采用不同板厚的304不锈钢进行平板焊接试验和对接性试验,旨在研究不锈钢K-TIG焊接工艺的特点。针对3 mm, 5 mm, 8 mm, 10 mm厚304不锈钢平板进行焊接试验,得出了不同板厚的K-TIG临界焊接电流。进一步研究了不同焊接电流对8 mm不锈钢板对接焊缝熔深的影响,当焊接电流400 A时,焊接电流相对较小电弧穿透能力偏弱尚不足以贯穿母材;当焊接电流增加到495 A时,电弧作用力增加穿透母材形成穿透的焊缝。对不同参数下的焊接电弧形态进行了观察,结果表明,提高焊接电流电弧收缩程度增加;提升钨极高度电弧收缩程度减小。304 stainless steel with different plate thickness was used for plate welding test and butt joint test,in order to study process characteristics of K-TIG welding of stainless steel.K-TIG critical welding current of 304 stainless steel plates with thickness of 3 mm,5 mm,8 mm and 10 mm were obtained by welding tests.Effect of different welding current on penetration of butt weld of 8 mm stainless steel plate was further studied.When welding current was 400 A,it was relatively small and arc penetration ability was weak,which was not enough to penetrate base metal.When welding current increased to 495 A,arc force increased and penetrated base metal to form a penetrated weld.Morphology of welding arc under different parameters was observed.The results showed that arc shrinkage degree increased with the increase of welding current,while arc shrinkage decreased when tungsten pole was raised.

关 键 词：K-TIG 304不锈钢 焊接电流 电弧形态 

分 类 号：TG444[金属学及工艺—焊接]