摘要
针对某产品铜带焊接工艺,提出了一种电弧热丝方式应用于TIG堆焊铜、钢工艺的研究。电弧热丝可有效预热低电阻率的焊接材料,如铜;传统的电阻热丝只能加热具有高电阻率的焊接材料,如钢。采用电弧热丝系统,热丝电流小于50A时即可有效预热焊丝,与电阻热丝电流400A相当。在相同焊接电流下,能够大大提高焊接熔敷速度;在相同送丝速度下,降低焊接电流,大大降低焊接设备功率。同时证明2种热丝加热方式对钢基体、铜合金的影响相同,特别是对堆焊层铜合金中泛铁量的影响相当。
A kind of arc hot wire method is put forward to TIG welding copper and steel technology research for copper welding process of a product.Arc hot wire can effectively preheat welding materials with low resistivity,such as copper;while the traditional resistance hot wire can heat welding materials with high resistivity only,such as steel.Using arc hot wire system,wire can be preheated effectively when hot wire current is less than 50 A which is equivalent to resistance hot wire current 400 A.Under the same welding current,the weld speed can be greatly improved;in the same wire feed speed,the welding current can be reduced,which can greatly reduce the welding equipment power.At the same time that two kinds of heating methods have the same effect on steel matrix and copper alloy,especially the effect on the extensive iron content of copper alloy in surfacing layer.
出处
《精密成形工程》
2012年第3期43-46,共4页
Journal of Netshape Forming Engineering
关键词
电弧热丝
电阻热丝
TIG堆焊
泛铁量
arc hot wire
resistance hot wire
TIG surfacing
extensive iron content
