Bakin karfe tubezafi magani babban manufar shi ne ya canza ciki bututu karfe matrix tsarin, inganta taurin bakin karfe bututu, amma saboda shi ne ba fundamentally canza bututu ilimin halittar jiki, sabili da haka ba zai iya yadda ya kamata inganta ƙarfi da taurin da bakin karfe tube.Bakin karfe bututu quenching zafin jiki ya kamata a zaba a cikin ainihin m zafin jiki 30-70℃, saboda rashin ƙarancin thermal conductivity na karfe, lokacin riƙewa yawanci kusan sau biyu ya karu fiye da karfe.

A halin yanzu, domin rage quenching danniya, kafin quenching ya kamata a cikin iska pre-sanyi, man quenching matsakaici kullum amfani da karfi don kauce wa quench fatattaka kuma iya daukar farkon man fetur (sanyi zuwa 200-300).℃) tsarin sanyaya iska.Bayan bakin karfe tube quenching, martensite matrix tsarin iya zama ko troostite bayan tempering tempered cikin sorbite, wanda aka quenching, tempering tsari da kuma tempered bakin karfe bututu sauran bututu ne babu wani muhimmin bambanci bayan quenching ya kamata a tempered bakin karfe.Bakin karfe kuma na iya zama isothermal quenching isothermal quenching matsakaici na iya zama zafi mai ko nitrate, misali, a 830-870.℃, sa'an nan kuma mai tsanani quenched 280-350℃isothermal nitrate.Karfe quenching bututu ko isothermal quenching, inganta inji Properties fiye da talakawa launin toka simintin ƙarfe ne na ƙwarai.

Domin inganta surface taurin da sa juriya na bakin karfe bututu, na iya zama harshen wuta hardening, high-mita surface hardening da sinadaran zafi magani, a cikinsa mai girma mita ko matsakaicin mita surface hardening mafi aikace-aikace.High, matsakaici mitar surface hardening tare da dumama lokaci ne takaice, m hadawan abu da iskar shaka da kuma decarbonization, nakasawa ne kananan, da kuma sauki aiki, da dumama zafin jiki ne yawanci 850-950.℃, Bakin karfe bututu saboda rashin ingancin thermal conductivity, da ƙananan narkewa, ƙimar dumama ba ta da sauri sosai, in ba haka ba yana yiwuwa ga fashewa ko narkewa.High, matsakaici mita aiki bakin karfe tube ba kawai zai iya inganta surface taurin da kuma ci juriya, amma kuma muhimmanci inganta gajiya ƙarfi, ƙara sabis rayuwa, da sauran, Machine Tool lantarki lamba surface na dumama ne na hali misali na wani bakin karfe. tube surface hardening.Domin samun mai kyau matrix kungiyar tabbatar da bakin karfe tube ciki surface hardening da inji Properties za a iya samu bayan high taurin, surface zafi magani kafin mafi kyau kafin normalizing ko quenching da tempering jiyya.