Insimbi ephezulu ye-alloyukunemba encane ububanzi ipayipi Seamless steelcishe ayisebenzisi inqubo yokucima okuqondile;Lapho inani le-austenite eligciniwe lidingeka ngokuqinile, insimbi ephansi ye-alloy ngeke icinywe ngokuqondile.Inkinga ejwayelekile ukubukeka kwama-ripples ebusweni be-aukunemba encane ububanzi ipayipi Seamless steel(njengamagiya athandelayo noma angama-hypoid) ngaphansi komthwalo osebenzayo.
Ukuze kuncishiswe inani le-austenite egciniwe kanye ne-deformation ngesikhathi sokucisha okuqondile, ukupholisa kwangaphambili kungasetshenziswa ukusondela kuzinga lokushisa le-Ar1 ngemva kokungcwatshwa kwe-carburizing bese kucinywa.Ipayipi lensimbi elingenamthungo elincane elinembayo lingacishwa kuqala lapho lidluliselwa esithandweni esingaphezudlwana kwezinga lokushisa le-Ar1.Ngemuva kokungcwatshwa nokucisha, ipayipi lensimbi elingenamthungo elincane elinembayo lingashisiswa libe ezingeni lokushisa elingaphezulu kwe-Ac1, liqhubeke licwenge okusanhlamvu futhi linciphise inani le-austenite esele.
Ukunemba ububanzi obuncaneipayipi elibandayo eligoqiwe lensimbi engenamthungokucinywa ngokuqondile ukuze kutholwe amandla aphezulu nobulukhuni, kodwa ukuqina abukho phezulu.Ukuqina kongqimba lwe-carburized bungalinganiswa ngefayela.Ukuqina bungancishiswa ngenxa yokuba khona kwe-austenite eyinsalela epayipini elincane elingenamthungo lensimbi ephezulu ye-alloy.Le ndlela futhi inganciphisa usimende emngceleni wokusanhlamvu.Lapho kwenziwa umshini indawo eshisiwe yezinga elincane ngokunembaipayipi lensimbi engenamthungoKudingeka, ukupholisa kancane noma ukucwiliswa kwamanzi kuzokwamukelwa.
Uma insimbi yokuqina okuphezulu ikhethwa noma ithintwa okokusebenza, noma ngabe ukupholisa kuhamba kancane, ingaphezulu lepayipi lodonga eliwugqinsi elikhanyayo elikhanyayo lisenokuqina okuphezulu.Kulokhu, ukwelashwa okuthambisayo kufanele kwamukelwe.Ukuze ugweme imvula ye-carbide yenethiwekhi, izinga lokupholisa elimaphakathi kufanele lamukelwe.Thatha izinyathelo ezithile zokuphepha ukuze uvimbele ukukhishwa kwe-carburization ngesikhathi sokupholisa kancane.Insimbi ecishiwe amanzi izosetshenziswa ngokulandelayo.Ngemuva kokungcwatshwa kwe-carburizing, indlela yokupholisa kancane noma yokucisha uwoyela ingasetshenziswa ukucwenga izinhlamvu phakathi nendawo yokunemba ipayipi elincane lensimbi elingenamthungo ngaphandle kokuguquka okukhulu noma ukuqhekeka.
Enqubweni yokwelashwa kokushisa kokucisha okuningi kokushisisa, ukungcwatshwa kwe-carburizing kanye nokupholisa okulandelwa ukucisha ukushisa kabusha, ukucisha okungaphezulu kungenziwa ngokucisha indawo, futhi lezi zindlela zingasetshenziswa.Ukuze uthole ukunemba amapayipi amancane ensimbi angenamthungo anokuqukethwe okuphezulu kwe-alloy, kungcono ukusebenzisa indlela yenqubo eseduze nokucisha okuqondile, okungukuthi, ukushisa kabusha ku-15 ~ 25 ℃ (25 ℃~50 ℃) ngaphezu kwezinga lokushisa eliphakathi nendawo (yebo, ngaphezu kobubanzi bokuguqulwa kwendawo).
Inqubo yokwelapha ukushisa ikhulisa amandla omnyombo wepayipi elincane elinobubanzi obunembe kakhulu elingenamthungo futhi linokuqina okuhle.Cishe wonke ama-carbide asele ebusweni ayancibilika.Nakuba okuqukethwe okusele kwe-austenite kwenqubo enjalo ukunemba ipayipi lensimbi engenamthungo eliyindilinga encane enobubanzi obuncane kungaphansi kwalokho kokucisha okuqondile, izogcinwa kancane.I-deformation inkulu kunaleyo yokucisha ngokuqondile, kodwa ngaphakathi kwebanga elamukelekayo.Njengokucisha okuqondile, le ndlela ayisetshenziselwa neze i-carbon steel evamile.
Ngemuva kokupholisa okunensayo noma ukucisha, insimbi ewuketshezi ingashiswa kabusha ibe yizinga lokushisa elishintshayo libe phezulu kancane kunalelo lesendlalelo se-carburized.Isibonelo, i-diameter encane ye-alloy ngokunemba ipayipi engenamthungo ingashiswa kabusha ngemuva kokungcwatshwa kwe-carburizing nokupholisa kancane, ngoba ayikwazi ukucwenga okusanhlamvu nokucisha, ukuze ubulukhuni bayo bube buncane, ukuwohloka kuncane, futhi ukuqina kumaphakathi;Ungqimba olungaphezulu lunama-carbides angancibilikisiwe, ngakho-ke linokuqina okuphezulu nokuqina;Isibonelo, ipayipi elincane lensimbi elingenamthungo elinembayo liyashisisa kabusha ngemva kokungcwatshwa kwe-carburizing kanye nokucisha, futhi okusanhlamvu kucwengisiswe ngokugcwele.Isikhungo sinokuqina okuphezulu, ubulukhuni obuphansi, futhi indawo engaphezulu ayinayo i-cementite yenethiwekhi, ngakho-ke ukuqina kuphezulu futhi ukuqina kuhle, kodwa okubi ukuthi ukuguqulwa kukhulu.
Isikhathi sokuthumela: Dec-06-2022