Kayan aikin ƙarfe na foda da samfuran da aka keɓance, bisa ga buƙatun aikin samfur daban-daban, sun yi kama da maganin zafi na yau da kullun. Bayan shigar da dumama da quenching, dole ne a huce su don rage damuwa na ciki da quenching brittleness, daidaita tsarin, da cimma abubuwan da ake buƙata na inji. Ana yin ƙananan zafin jiki yawanci. Iri uku na induction tempering, tanderu zafin jiki da kai ne sau da yawa amfani a samarwa.
①Induction tempering The quenched workpiece ne re-inductively mai tsanani don cimma manufar tempering, wato, bayan workpiece ne mai tsanani da inductor da fesa-sanyi, induction dumama da tempering ya kamata a yi nan da nan. Saboda ɗan gajeren lokacin dumama, microstructure yana da babban tarwatsewa. Yana iya samun high lalacewa juriya da high tasiri tauri, da dai sauransu Ya dace musamman ga tempering na shafts, hannayen riga da sauran sassa da aka ci gaba mai tsanani da quenched.
② Tempering a cikin tanderu The workpiece ne tempered a cikin wani rami makera, man tanderu ko wasu kayan aiki bayan high-mita quenching. The tempering zafin jiki ya kamata a ƙayyade bisa ga bukata taurin da yi, da tempering zafin jiki da kuma Time, kamar yadda high carbon karfe kayayyakin aiki da aunawa kayayyakin aiki, matsakaici carbon karfe ko matsakaici carbon gami karfe gears da spline shafts, gami jefa baƙin ƙarfe camshafts da sauran sassa. , yana buƙatar ƙaramin adadin sanyaya, yawanci ta amfani da sanyaya nutsewa cikin ruwa ko ruwa. Yawancin su suna da zafi a 150 ~ 250 ℃, kuma lokacin shine gabaɗaya 45 ~ 120min. Ana amfani da mafi yawa don tempering na workpieces tare da kananan size, hadaddun siffar, bakin ciki bango da m taurare Layer don tabbatar da high taurin da sa juriya na saman sassa. bukata
③Zazzaɓin kai Dakatar da sanyaya bayan spraying ko nutsewa sanyaya, da kuma amfani da zafin data kasance a cikin quenched workpiece bayan quenching sa quenching yankin tashi zuwa wani zazzabi sake saduwa da bukatun na tempering, kuma ta zafin jiki ya zama mafi girma fiye da tempering zafin jiki. a cikin tanderun. Gabaɗaya, saman ciki na sassan yana da zafi mafi girma bayan sanyaya don 3 zuwa 10 seconds. A matsayin lokacin fushin kai, manyan sassa sune 6s kuma ƙananan su ne 40s don kammala aikin kai.