1) mu austenite isothermal kusintha mapu a m'dera lililonse, kutanthauza, pafupifupi 500-600 ℃, madzi mu nthunzi filimu siteji, kuzirala liwiro si wachangu mokwanira, nthawi zambiri kumayambitsa mkangano.kupangakuzirala ndi kusakwanira kuzirala liwiro ndi mapangidwe "soft point".Mu dongosolo la kusintha kwa martensite, ndiye kuti, pafupifupi 300-100 ℃, madzi ali mu siteji yowira, kuzizira kumakhala mofulumira kwambiri, kosavuta kupanga kusintha kwa martensite mofulumira kwambiri ndipo kumatulutsa nkhawa zambiri zamkati, zomwe zimatsogolera deformation yopangira komanso ngakhale kusweka.
2) Kutentha kwamadzi kumakhudza kwambiri kuziziritsa, kotero kumakhala kovutirapo ndi kusintha kwa kutentha kozungulira.Pamene kutentha kwa madzi kumakwera, mphamvu yoziziritsa imatsika kwambiri, ndipo kutentha kwa kutentha kwakukulu kumapita ku kutentha kochepa.Kutentha kwa madzi kukapitilira 30 ℃, kuzizira kumachepa kwambiri mumitundu ya 500-600 ℃, zomwe nthawi zambiri zimabweretsa kuumitsa kwazojambula, koma imakhala ndi zotsatira zochepa pa mlingo wozizira pamtundu wa kusintha kwa martensite.Kutentha kwa madzi kukakwera kufika pa 60 ℃, kuzizira kumatsika ndi pafupifupi 50%.

3) pamene madzi ali ndi mpweya wochuluka (monga madzi osinthidwa kumene), kapena madzi osakanikirana ndi zonyansa zosasungunuka, monga mafuta, sopo, matope, ndi zina zotero, zidzachepetsa kwambiri mphamvu yake yoziziritsa, kotero kugwiritsa ntchito ndi kuyang'anira ziyenera kusamala kwambiri. ku.
Malinga ndi kuzirala kwa madzi, madzi nthawi zambiri H angagwiritsidwe ntchito kuzimitsa kuziziritsa kwa carbon steelzojambulandi kukula kwa gawo laling'ono ndi mawonekedwe osavuta.Kuzimitsa, ayeneranso kuzindikira: kusunga kutentha madzi m'munsimu 40 ℃, yabwino pakati pa 15 mpaka 30 ℃, ndi kusunga madzi kapena madzi kufalitsidwa, kuwonongakupangapamwamba nthunzi nembanemba, komanso angagwiritse ntchito pachimake workpiece pa quenching (kapena kupanga workpiece kusuntha mmwamba ndi pansi) njira kusokoneza nthunzi nembanemba, kuonjezera kuzirala pakati 500-650 ℃, kuzirala, kupewa kutulutsa mfundo zofewa.