High Frequece Welder for Steel Pipe

High frequency welding is originated in 1950s, which is a new welding technics to weld steel or other metal material using skin effect and proximity effect produced by high frequency current. The appearance and mature of high frequency welding technology directly promote the development of straight seam welding tube industry.

GGP series of solid state HF welder is a kind of high frequency inverter power supply to change 3-phase power frequency 50Hz AC to be single phase high frequency AC (100~600kHz), with AC-DC-AC topological structure for the circuit. GGP series of solid state HF welder adopts high voltage large power MOSFET module as switch device of inverter. Take MCU system and intelligent CPLD programmable chip as core to form rectifying and inverter digital control system. GGP series of solid state HF welder has the advantages of high welding quality, simple and reliable circuit, convenient commissioning and operation and energy saving, which is the best choice for enterprises to improve production technics and enhance quality.

GGP series of solid state HF welder includes: switchgear rectifying cabinet, inverter output cabinet, console (optional), positioning table (optional), water cooling system (optional)

a.  switchgear rectifying cabinet                 b.  inverter output cabinet

c.  console                                 d.  water cooling system

Fig. 1 GGP series of solid state HF welder compositon