直流氩弧焊是近几年发展起来的一种焊接方法,它的特点是操作方便、焊接速度快、焊接端点光亮美观、安全省电、一机多用。它能焊接各种金属及不同直径的热电偶,如标准热电偶、各种丝材工业热电偶以及铂铑丝单丝对焊,因此可广泛用于生产和科研中。我们于1977年试制成功这种装置,实践表明这是一种 DC argon arc welding is developed in recent years, a welding method, which is characterized by easy operation, welding speed, bright and beautiful end of the welding, safe and power saving, a multi-purpose machine. It can weld a variety of metals and different diameter thermocouples, such as standard thermocouples, a variety of wire industrial thermocouple and platinum rhodium wire single wire butt welding, it can be widely used in production and research. We successfully prototyped this device in 1977, which shows that this is a kind of practice