| 2. | Patent control technology of dynamic characteristics and waveform , hard arc , stable welding current , little spatter , good welding surface , optimized matching parameters , welding speed increased by 100 - 200 % 专利动特性及波控技术,电弧挺度大,焊接过程稳定,飞溅少,成型美观,优化参数匹配,焊速可提高100 - 200 % |