... High efficiency high frequency heating quenching furnace for auto parts shaft Heat treatmentVarious kind of automobile parts, motorcycle parts, ... , etc. quenching;3, various power tools. Such as gear, shaft;4, the machine tool industry . Such as machine tool ... quenching;5, various hardware metal parts, machining parts. Such as shaft, gear (sprocket), cam, clamps, fixtures, etc. quenching;6, the metal ...