... , inverter frequency of 18 KHz, dynamic fast response and easy arc starting, arc stability performance, and pool uniform, minimum spatter, even small current welding ... of less than 100 W, as compared with conventional welding machine, to save electricity by 50%. Welding low carbon steel, high ... ×670650×320×670650×320×670650×320×670 IGBT Inverter DC arc welding machine(ZX7 series)