The core of the new upgrade of black technology is high performance, with one level of thrust, fast arc initiation, non stick welding rod, independent thrust adjustment, instant arc initiation, non stick welding rod, stable arc, low voltage and high efficiency, OIGcBT, high performance and long service life. It adopts a new imported IGBT high-frequency inverter, which is safer, more energy-saving, and has low loss than digital thyristor welding machines. The intelligent chip has multiple protections, anti stick thrust, hot arc initiation, and anti explosion tube, which are energy-saving, efficient, and more stable. The amorphous transformer adopts an amorphous alloy core with the advantages of low loss and high efficiency