... voltage controlled Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder Main configuration:1, CNC system control;2, Stepper motor ... gear motor drive screw, screw the top down;7, Solenoid valve control water;8, With a heating device control plug.Gou ... other heat treatment process, but also complete welding, melting, hot assembly, disassembly and heat through hot forming and so on. 7 ...