工艺参数对GPCA-TIG焊缝成形的影响  

Effect of welding parameters on shapes of welds in GPCA-TIG welding

作　　者：刘瑞琳[1] 黄勇[2] 邓有忠[3] 

机构地区：[1]成都航空职业技术学院,四川成都610010 [2]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050 [3]成都飞机工业(集团)有限责任公司,四川成都610092

出　　处：《电焊机》2014年第7期38-41,共4页Electric Welding Machine

摘　　要：以SUS304不锈钢为母材,利用自行设计制造的GPCA-TIG专用焊枪,研究了焊接工艺参数对奥氏体不锈钢GPCA-TIG焊缝成形的影响,对于优化GPCA-TIG焊接工艺具有一定的指导意义。结果表明,O元素能增加焊缝熔深,而N元素则不能,但N元素却能促进O元素的吸收;焊接电流和焊接速度决定了焊接线能量的大小,影响O元素对熔池Marangoni对流方式的改变;弧长的变化会影响焊接热源总体的热输入和熔池的温度分布。This article adopts SUS304 stainless steel for welding based metal,and studies the effect of welding parameters on shapes about SUS304 stainless steel,it is significant for optimizing welding parameters,meanwhile a specified welding torch is used which is designed and manufactured by ourselves. The result indicates weld penetrations can be increased by oxygen but not nitrogen. However the element of nitrogen can promote absorbing oxygen. Weld heat input is decided by the welding current and traveling speed, which may influence the effect of changing Marangoni convection of molten pool by the content of oxygen. The overall heat input of welding heat source and the distribution of temperature in molten pool are affected by the change of arc length.

关 键 词：GPCA-TIG 氮氧配比 焊接速度 焊接电流 电弧长度 

分 类 号：TG444.74[金属学及工艺—焊接]