... energy; it save60% water. induction quenching ,high frequency induction quenching furnace,high frequency induction machine.quenching the guide rail of machine ... request, guide way hardening can’t deformation.3. heating speed should faster.4. the hardening coils request perfect in ... , chain wheel, aluminium wheels, air door, ocher-arm shaft,drive half shaft, mall shaft, sifting fork, etc.hardening.3. ...