Intsimbi ye-alloy ephezuluumbhobho wentsimbi echanekileyo ububanzi obuncinciphantse ayisebenzisi inkqubo yokucima ngokuthe ngqo;Xa ubuninzi be-austenite obugciniweyo bufunwa ngokungqongqo, intsimbi ephantsi ye-alloy ayiyi kucinywa ngokuthe ngqo.Ingxaki eqhelekileyo yinkangeleko yamazambuku kumphezulu aumbhobho wentsimbi echanekileyo ububanzi obuncinci(ezifana ne-spiral okanye i-hypoid gears) phantsi komthwalo osebenzayo.
Ukuze kuncitshiswe inani le-austenite egciniweyo kunye ne-deformation ngexesha lokucima ngokuthe ngqo, ukupholisa kwangaphambili kunokusetyenziselwa ukusondela kubushushu be-Ar1 emva kokungcwatywa kwe-carburizing kwaye emva koko kucinywe.Umbhobho wentsimbi ongenamthungo ochanekileyo wedayamitha encinci unokucinywa kuqala xa ukhutshelwa eziko elingaphezulu kancinci kunobushushu beAr1.Emva kokucima i-carburing kunye nokucima, umbhobho ochanekileyo omncinci wentsimbi ongenamthungo nawo unokufudunyezwa kwiqondo lobushushu elingaphezulu komphezulu we-Ac1, ukucokisa ngakumbi ukutya okuziinkozo kunye nokunciphisa inani le-austenite eshiyekileyo.
I-diameter encinci echanekileyoumbhobho wentsimbi epholileyo uqengqiwekucinywa ngokuthe ngqo ukufumana amandla aphezulu kunye nobunzima, kodwa ukuqina abukho phezulu.Ubunzima boluhlu lwe-carburized lunokulinganiswa ngefayile.Ubunzima bunokuncitshiswa ngenxa yobukho be-austenite eshiyekileyo kumbhobho ochanekileyo omncinci ongenamthungo wentsimbi ephezulu yealloy.Le ndlela inokunciphisa i-cementite kumda weenkozo.Xa umatshini umphezulu carburized ngokuchanekileyo caliber encinciumbhobho wentsimbi ongenamthungoUkupholisa okucothayo okanye ukucoca kuya kwamkelwa.
Ukuba intsimbi enokuqina okuphezulu ikhethiwe okanye ichatshazelwa zizixhobo, nokuba ukupholisa kuyacotha, umphezulu wedayamitha encinci echanekileyo, umbhobho wodonga ongqindilili oqaqambileyo usenobulukhuni obuphezulu.Kule meko, unyango oluthambileyo lufanele lwamkelwe.Ukuphepha imvula ye-carbide yenethiwekhi, izinga lokupholisa eliphakathi kufuneka lamkelwe.Thatha amanyathelo okukhusela ukuthintela i-decarburization ngexesha lokupholisa okucothayo.Amanzi acinyiweyo aya kusetyenziswa emva koko.Emva kokungcwatywa kwe-carburizing, ukupholisa okucothayo okanye indlela yokucima i-oyile ingasetyenziselwa ukucokisa iinkozo kumbindi wombhobho wentsimbi ochanekileyo ongenamthungo ngaphandle kokuguquka okunzulu okanye ukuqhekeka.
Kwinkqubo yokunyanga ubushushu bokucinywa kokufudumeza okuninzi, ukucima i-carburizing kunye nokupholisa okulandelwa kukucinywa ngokutsha, ukucima umphezulu kunokuphunyezwa ngokucinywa komphezulu, kwaye ezi ndlela zingasetyenziswa.Ukuchaneka imibhobho yentsimbi encinci engenamthungo enomxholo ophezulu we-alloy, kungcono ukwamkela indlela yenkqubo ekufutshane nokucima ngokuthe ngqo, oko kukuthi, ukutshisa kwakhona kwi-15 ~ 25 ℃ (25 ℃ ~ 50 ℃) ngaphezu kweqondo lokushisa eliphakathi (kunjalo, ngaphaya koluhlu lokuguqulwa komphezulu).
Inkqubo yonyango lobushushu ikhulisa amandla ombindi wedayamitha encinci echanekileyo ephezulu umbhobho ongenamthungo kwaye unokuqina okuhle.Phantse zonke ii-carbides eziseleyo kumphezulu ziyachithwa.Nangona umxholo oshiyekileyo we-austenite wenkqubo enjalo ukuchaneka kombhobho wentsimbi omncinci ububanzi obandayo oqengqelekayo ungaphantsi kwalowo wokucima ngokuthe ngqo, uya kugcinwa ngokuyinxenye.I-deformation inkulu kunokucima ngokuthe ngqo, kodwa ngaphakathi koluhlu olwamkelekileyo.Njengokucima ngokuthe ngqo, le ndlela ayisetyenziswanga kwintsimbi yekhabhoni eqhelekileyo.
Emva kokupholisa okucothayo okanye ukucima, intsimbi engamanzi inokuphinda ifudunyezwe kwiqondo lokutshintsha kwesigaba esingaphezulu kancinci kunomaleko we-carburized.Umzekelo, i-alloy encinci ye-alloy echanekileyo umbhobho ongenamthungo unokuphinda ufudunyezwe emva kwe-carburizing kunye nokupholisa okucothayo, ngenxa yokuba ayikwazi ukucokisa iinkozo kunye nokucima, ukwenzela ukuba ubunzima bayo bube buphantsi, ukuguqulwa kuncinci, kwaye ukuqina kuphakathi;Umgangatho ongaphezulu une-carbides enganyibilikiyo, ngoko unobunzima obuphezulu kunye nokuqina;Umzekelo, umbhobho ochanekileyo omncinci wentsimbi ongenamthungo ufudunyezwa kwakhona emva kokungcwatywa kwe-carburizing kunye nokucima, kwaye ingqolowa icocwe ngokupheleleyo.Iziko linobunzima obuphezulu, ubulukhuni obuphantsi, kwaye umphezulu awunayo i-cementite yenethiwekhi, ngoko ke ubunzima buphezulu kwaye ukuqina kuhle, kodwa ukungahambi kakuhle kukuba i-deformation inkulu.
Ixesha lokuposa: Dec-06-2022