This article introduces the feature of STT welding power source,researches the combined technology of rough welding,filling inshielded flux-cored and casing welding.

• 介绍了STT焊接电源的性能特点,对STT半自动焊根焊,自保护药芯焊丝半自动焊填充、盖面的组合焊接工艺进行了研究。