⑴ Ukucima ubuso:
Ingabe ingaphezulu lensimbi ngokushisa okusheshayo kuya ekushiseni okubalulekile ngenhla, kodwa ukushisa akuzange kube nesikhathi sokusabalala kumgogodla ngaphambi kokupholisa okusheshayo, ukuze ungqimba olungaphezulu lucinywe kuzicubu ze-martensitic, futhi umnyombo awuzange udlule. ukuguqulwa kwesigaba, okubona ukuqina kwendawo kanye nengqikithi ingashintshiwe. Ifanele i-medium carbon steel.

⑵ Ukwelashwa kokushisa ngamakhemikhali:
Isho i-athomu ye-chemical element, enekhono lokusabalalisa i-athomu ekushiseni okuphezulu, ibe ungqimba olungaphezulu lwe-workpiece, ukuguqula ukwakheka kwamakhemikhali kanye nokwakheka kongqimba olungaphezulu lwe-workpiece, ukuze kuzuzwe ungqimba olungaphezulu lwensimbi. ngezidingo ezithile zenhlangano nokusebenza kwenqubo yokwelapha ukushisa. Ngokuya ngezinhlobo zezinto zokungeniswa, ukwelashwa kokushisa kwamakhemikhali kungahlukaniswa kube yi-carburizing, nitriding, cyanidation kanye nomthetho wokungena kwensimbi.
I-Carburizing: I-Carburizing inqubo lapho ama-athomu ekhabhoni angena ongqimbeni olungaphezulu lwensimbi. Ingabe futhi ukwenza umshini ophansi we-carbon steel workpiece nge-high carbon steel surface layer, bese emva kokucisha kanye nokushisa okushisa okuphansi, ukuze ungqimba olungaphezulu lwe-workpiece lube nobulukhuni obuphezulu nokumelana nokugqoka, futhi ingxenye ephakathi ye-workpiece isalondoloze ukuqina kanye nepulasitiki yensimbi ephansi ye-carbon.
I-Nitriding, noma i-nitriding, inqubo lapho ungqimba olungaphezulu lwensimbi lungena khona ama-athomu e-nitrogen. Inhloso ukuthuthukisa ubulukhuni nokumelana nokugqoka kongqimba olungaphezulu nokuthuthukisa amandla okukhathala nokumelana nokugqwala. Njengamanje, indlela ye-gesi nitriding isetshenziswa ekukhiqizeni.
I-Cyanidation, eyaziwa nangokuthi i-carbonitriding, ukungena kanyekanye kwe-carbon ne-athomu ye-nitrogen ensimbi. Yenza ubuso bensimbi ye-carburizing kanye nezici ze-nitriding.
Ukungena kwensimbi: kubhekisela ekungeneni kwama-athomu ensimbi ongqimbeni olungaphezulu lwensimbi. Kuwukwenza ungqimba olungaphezulu lwe-alloying yensimbi, ukuze wenze indawo yokusebenza ibe nensimbi ye-alloy, izici ezikhethekile zensimbi, njengokumelana nokushisa, ukumelana nokugqoka, ukumelana ne-oxidation, ukumelana nokugqwala, njll. Evame ukusetshenziswa ekukhiqizeni i-aluminizing, i-chromizing, i-boronizing, i-silicon njalonjalo.