⑴ Ukucima umphezulu:
Ngaba umphezulu wentsimbi ngokufudumeza ngokukhawuleza kwiqondo lobushushu elibalulekileyo ngasentla, kodwa ubushushu alizange libe nexesha lokusasazeka kumbindi ngaphambi kokupholisa ngokukhawuleza, ukwenzela ukuba umaleko womphezulu unokucinywa kwizicubu ze-martensitic, kwaye undoqo awuzange udlule. ukuguqulwa kwesigaba, esiqonda ukuqina komphezulu kunye nengundoqo ingatshintshi. Ifanelekile kwintsimbi yekhabhoni ephakathi.

⑵ Unyango lobushushu beMichiza:
Ibhekisa kwiathom yekhemikhali, kunye nekhono lokusasazwa kweathomu kwiqondo lobushushu eliphakamileyo, ingene kumaleko omgangatho wesixhobo sokusebenza, ukuguqula ukwakheka kweekhemikhali kunye nesakhiwo somaleko ongaphezulu wesixhobo sokusebenza, ukuze kuphunyezwe umaleko ongaphezulu wentsimbi. ngeemfuno ezithile zombutho kunye nokusebenza kwenkqubo yokunyanga ukushisa. Ngokweentlobo zezinto zokungeniswa, unyango lobushushu bekhemikhali lunokwahlulwa lube yi-carburizing, nitriding, cyanidation kunye nomthetho wokungena kwesinyithi.
Carburizing: Carburizing yinkqubo apho iiathom zekhabhoni zigqobhoza kumaleko ongaphezulu wentsimbi. Kwakhona ukwenza i-carbon steel workpiece ephantsi kunye nekhabhoni ephezulu yentsimbi, kwaye emva kokucinywa kunye nobushushu obuphantsi, ukwenzela ukuba umaleko womphezulu we-workpiece unobulukhuni obuphezulu kunye nokumelana nokunxiba, kwaye inxalenye ephakathi ye-workpiece igcina ukuqina kunye neplastiki yentsimbi ephantsi yekhabhoni.
I-nitriding, okanye i-nitriding, yinkqubo apho umaleko wentsimbi ugqobhoza iiathom zenitrogen. Injongo kukuphucula ukuqina kunye nokuxhatshazwa kokugqoka komgangatho ophezulu kunye nokuphucula amandla okukhathala kunye nokumelana nokubola. Okwangoku, indlela yegesi ye-nitriding isetyenziswa kwimveliso.
I-Cyanidation, eyaziwa ngokuba yi-carbonitriding, kukungena ngaxeshanye kwekhabhoni kunye ne-athomu yenitrogen kwintsimbi. Yenza umphezulu wentsimbi ye-carburizing kunye neempawu ze-nitriding.
Ukungena kwesinyithi: kubhekiselele ekungeneni kweeathom zetsimbi kumgangatho ongaphezulu wentsimbi. Kukwenza umaleko womphezulu we-alloying yentsimbi, ukwenzela ukuba i-workpiece surface ibe nentsimbi ye-alloy, iimpawu ezikhethekileyo zentsimbi, ezifana nokumelana nobushushu, ukumelana nokunxiba, ukuxhathisa i-oxidation, ukuxhathisa ukubola, njl. aluminizing, chromizing, boronizing, isilicon njalo njalo.