45#Kulimba kwachitsulo pambuyo pozimitsa ndi kutentha

Kulimba kwa 45 # zitsulo zozimitsidwa ndi kupsya mtima pambuyo kuzimitsa ziyenera kufika HRC56 ~ 59, ndipo kuthekera kwa gawo lalikulu la mtanda ndilotsika, koma sikungakhale kutsika kuposa HRC48.

Kuzimitsidwa ndi kupsya mtima 45 # zitsulo 45 # chitsulo ndi sing’anga-mpweya mpweya structural zitsulo ndi kuzizira ndi kutentha workability wabwino, katundu makina, mtengo otsika ndi magwero lonse, choncho chimagwiritsidwa ntchito. Kufooka kwake kwakukulu ndikuti kumakhala ndi kuuma kochepa, miyeso yayikulu yopingasa ndi zofunikira zazikulu zogwirira ntchito zomwe sizoyenera kugwiritsidwa ntchito.

Kuti

Kutentha kozimitsa kwa 45 # chitsulo ndi A3 + (30 ~ 50) ℃. Mu ntchito yeniyeni, malire apamwamba amatengedwa. Kutentha kwakukulu kozimitsa kumatha kufulumizitsa kutentha kwa chogwirira ntchito, kuchepetsa makutidwe ndi okosijeni pamtunda, ndikuwongolera magwiridwe antchito. Kuti homogenize ndi austenite wa workpiece, yokwanira kugwira nthawi chofunika. Ngati kuchuluka kwenikweni kwa ng’anjo yoyikidwako kuli kwakukulu, nthawi yogwira iyenera kukulitsidwa moyenera. Apo ayi, pangakhale kuuma kosakwanira chifukwa cha kutentha kosiyana. Komabe, ngati nthawi yogwirayo ndi yayitali kwambiri, mbewu zowoneka bwino komanso decarburization ya oxidative imachitikanso.

Kuti

Kuzimitsa ndi kutentha: Kuzimitsa ndi kutentha ndi njira yochizira kutentha kwapawiri komanso kutentha kwambiri, ndipo cholinga chake ndikupangitsa kuti chogwirira ntchitocho chikhale ndi makina abwino ophatikizana. Chitsulo chozimitsidwa ndi chotenthedwa chili ndi magulu awiri: chitsulo chozimitsidwa ndi mpweya wotentha ndi aloyi wozimitsidwa ndi chitsulo chotentha. Mosasamala kanthu kuti ndi chitsulo cha carbon kapena aloyi chitsulo, mpweya wake umayendetsedwa mosamalitsa. Ngati mpweya wa carbon ndi wochuluka kwambiri, mphamvu ya workpiece pambuyo pozimitsa ndi kutentha ndipamwamba, koma kulimba sikokwanira. Ngati mpweya wa kaboni uli wochepa kwambiri, kulimba kumawonjezeka ndipo mphamvu imakhala yosakwanira.