... 2.electromagnetic coil induction hardening 3.3-phase 380V 4.high hardening speed TX-45B series induction heating ... , motorcycle accessories high-frequency hardening heat treatment. For example: crank shaft, ram, piston pin, camshaft, vavle. transmission within the ... various gears, shifting fork, spline shaft, gear axle, drive axle, small crank shaft pins, rocker, and other accessories high ...