Pipe fitting pulse current resistance heating and electromagnetic pulse composite welding method

The invention discloses a pipe fitting pulse current resistance heating and electromagnetic pulse composite welding method. An electromagnetic pulse power supply provides a pulse current, and an induced current is generated on the surface of a welded outer pipe to impact a welded inner pipe at a high speed under the action of a pulse magnetic field; when the welded outer pipe is in contact with the welded inner pipe, a pulse current power supply provides a controllable pulse current, and a resistance between pipe fittings generates heat to fulfill the aim of metallurgical bonding of the pipe fittings; a computer control system regulates currents and working time of the electromagnetic pulse power supply and the pulse current power supply according to an empirical formula. According to the pipe fitting pulse current resistance heating and electromagnetic pulse composite welding method disclosed by the invention, by control of the electromagnetic pulse power supply and the pulse current power supply, control of