Makina opangira induction preheating nthawi zambiri amagwiritsidwa ntchito musanawumitse kapena kuwotcherera. Kuti azimitsa kutentha kwa preheating, gawo lomwe limapanga induction quenching process pambuyo pa preheat chithandizo, limatha kuthana ndi vuto la magawo otentha panthawi yantchito.

  Komanso, akhoza kuchepetsa workpiece kupotoza pa ndondomeko kuumitsa, kusintha kuumitsa wosanjikiza kugawa, kuonjezera kuumitsa wosanjikiza makulidwe, kupeza workpiece a bwino metallographic kapangidwe ndi otsalira compressive kupsinjika, ndi kuthetsa ming'alu quenching. Preheating kwa ndondomeko kuwotcherera akhoza kuchepetsa kuzirala kwa fungulo kuwotcherera kuzirala kutentha osiyanasiyana, kuteteza kwambiri kuumitsa, ndi kuchepetsa ductility wa weld ndi kutentha anakhudzidwa zone. Itha kuchepetsa kupsinjika kwa weld ndi zitsulo zoyandikana nazo, makamaka pazowotcherera zolimba kwambiri.