The invention relates to a steel
induction heating solid phase
welding method and a
butt welding machine tool. The
butt welding machine consists of a
machine body and a
butt welding clamp, wherein the machine body mainly comprises a
machine tool body, an electric cabinet, a
welding controller, a left main guide rail, a left main slide rail, a left
induction heating transformer, a
tool holder, a right
induction heating transformer, a right main guide rail, a right main slide rail and a hydraulic cabinet; and the hydraulic
steel tube and steel rail butt
welding clamp mainly comprise a left
hydraulic cylinder, a left
hydraulic cylinder fixing seat, a left steel rail fixing clamp, a left induction heating ring, a connecting rod of a
piston rod, a right induction heating ring, a right steel rail fixing clamp, a right
hydraulic cylinder fixing seat and a right hydraulic cylinder. The butt welding clamp is arranged on the end face to be welded of the steel product; and the induction heating rings are sleeved on the end face to be welded of the steel product respectively; an induction
heating power supply is connected with the primary of the induction heating
transformer by a cable, and the secondary of the induction heating transformer is connected with the induction heating rings respectively; and the induction heating rings can heat the end faces to be welded of two steel products to a
thermoplastic state in a shot time, and the upsetting
pull force is generated on the welding clamp, so that the two steel products are welded together.