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采用双逆变焊接技术研制了一台交直流钨极氩弧焊多功能焊机。介绍了其基本结构和工作原理，并材逆变主电路及控制方案的设计进行了分析和讨论。
Using dual inverter welding technology developed a multi-function AC and DC TIG welding machine. The basic structure and working principle are introduced, and the design of inverter main circuit and control scheme is analyzed and discussed.