Ukwenziwa mahalaintsimbi inezi zinto zintathu zilandelayo ezibalulekileyo phantsi kwemeko yokucima.
(1) Iimpawu zesakhiwo
Ngokutsho kobukhulu bentsimbi, ubushushu bokufudumala, ixesha, iimpawu zokuguqulwa kunye nemodi yokupholisa, isakhiwo sentsimbi esicinyiweyo kufuneka siqulunqwe nge-martensite okanye i-martensite + i-austenite eseleyo, ngaphezu koko, kunokubakho i-carbide encinci engachithwanga.Zombini i-martensite kunye ne-austenite eshiyekileyo zikwimeko enokumetastable kwiqondo lobushushu begumbi, kwaye zikholisa ukutshintshela kwisimo esizinzileyo sobunzima be-ferric kunye ne-cementite.
(2) Iimpawu zokuqina
Ukuphazamiseka kwe-lattice okubangelwa ii-athomu zekhabhoni kubonakaliswe ngobunzima, okwandisa nge-supersaturation, okanye umxholo wekhabhoni.Ukucima ubulukhuni besakhiwo, amandla aphezulu, iplastiki, ukuqina okuphantsi.
(3) Iimpawu zoxinzelelo
Kubandakanya uxinzelelo oluncinci kunye noxinzelelo lwe-macro, yangaphambili inxulumene nokuphazamiseka kwe-lattice okubangelwa yi-athomu ye-carbon, ngakumbi nge-carbon martensite ephezulu ukufikelela kwixabiso elikhulu kakhulu, uhlalutyo lokucima i-martensite kwimeko yoxinzelelo olunzima;Oku kokugqibela kungenxa yomahluko weqondo lobushushu owenziwe kwicandelo lomnqamlezo xa ucinywa, indawo yokusebenza okanye iziko lemeko yoxinzelelo yahlukile, kukho uxinzelelo okanye uxinzelelo olucinezelayo, kwi-workpiece yokugcina ibhalansi.Ukuba uxinzelelo lwangaphakathi lweengxenye zetsimbi ezilukhuni alupheli ngexesha, luya kubangela ukuguqulwa okuqhubekayo kunye nokuqhekeka kwamacandelo.
Ukushwankathela, nangona i-workpiece ecinyiweyo inobunzima obuphezulu kunye namandla aphezulu, kodwa idolo likhulu, isakhiwo asizinzile, kwaye kukho uxinzelelo olukhulu olucinyiweyo lwangaphakathi, ngoko kufuneka lufakwe kwisicelo.Ngokubanzi, inkqubo yokufutha yinkqubo yokulandela yokucima intsimbi, ikwayinkqubo yokugqibela kakhulu yenkqubo yokulahla i-thermal, inika i-workpiece emva kwemfuno yomsebenzi.
Ukufudumeza yinkqubo yokufudumeza intsimbi eqinile ukuya kubushushu obuthile obungaphantsi kwe-Ac1, ukuyigcina kangangexesha elithile, kwaye emva koko uyipholise kwiqondo lobushushu begumbi.Iinjongo zayo ezibalulekileyo zezi:
(1) ukulungelelanisa ngokufanelekileyo ubunzima kunye namandla ensimbi, ukuphucula ukuqina kwentsimbi, ukwenzela ukuba i-workpiece ihlangabezane neemfuno zesicelo;
(2) isakhiwo esizinzile, ukwenzela ukuba i-workpiece ngexesha lokusetyenziswa kwesigxina ayenzeki ukuguqulwa kwesakhiwo, ukwenzela ukuzinzisa isitayela kunye nobukhulu bomsebenzi;
Ukucima uxinzelelo lwangaphakathi lwe-workpiece lungancitshiswa okanye lupheliswe ukunciphisa ukuguqulwa kwayo kunye nokuthintela ukuqhekeka.