... frequency of 18 KHz, dynamic fast response and easy arc starting, arc stability performance, CharacteristicsUsing IGBT module, inverter frequency of ... 18 KHz, dynamic fast response and easy arc starting, arc stability performance, and pool uniform, minimum spatter, even ... steel, copper, titanium, etc. almost all black metal, weld quality can be obtained. TypeZX7-300ZX7-315ZX7-400ZX7-500ZX7- ...