Kukambilana Mwachidule Pa Kuzimitsidwa kwa Zitsulo ndi Kuzimitsidwa Kwambiri kwa Zitsulo za S45C

Kodi kuzimitsa ndi chiyani?

Kuzimitsa chithandizo ndi njira yochizira kutentha komwe chitsulo chokhala ndi mpweya wa 0.4% chimatenthedwa mpaka 850T ndikukhazikika mwachangu.Ngakhale kuzimitsa kumawonjezera kuuma, kumawonjezeranso brittleness.Ambiri ntchito kuzimitsa TV monga madzi amchere, madzi, mchere mafuta, mpweya, etc. Kuzimitsa akhoza kusintha kuuma ndi kuvala kukana za workpieces zitsulo, ndipo chimagwiritsidwa ntchito zosiyanasiyana zipangizo, zisamere pachakudya, zida zoyezera, ndi mbali kuvala zosagwira (monga magiya, odzigudubuza, ma carburized parts, etc.).Mwa kuphatikiza kuzimitsa ndi kutentha pa kutentha kosiyana, mphamvu ndi kutopa kwachitsulo kungathe kusintha kwambiri, ndipo mgwirizano pakati pa zinthuzi ukhoza kutheka kuti ukwaniritse zofunikira zosiyanasiyana zogwiritsira ntchito.

Kodi cholinga cha kuzimitsa zitsulo ndi chiyani?

Cholinga cha kuzimitsa ndikusintha undercooled austenite kukhala martensite kapena bainite kupeza martensite kapena bainite kapangidwe, ndiyeno kugwirizana ndi kutentha pa kutentha kosiyana kwambiri kusintha kuuma, kuuma, kukana kuvala, kutopa mphamvu, ndi kulimba kwa chitsulo, potero kukumana ndi zofunikira pakugwiritsa ntchito zida zosiyanasiyana zamakina ndi zida.Ndikothekanso kukumana ndi zida zapadera zakuthupi ndi zamankhwala zazitsulo zina zapadera, monga ferromagnetism ndi kukana dzimbiri, kudzera kuzimitsa.

Kuzimitsa pafupipafupi kwachitsulo cha S45C

1. Kuzimitsa pafupipafupi kumagwiritsidwa ntchito kwambiri kuzimitsa zitsulo zamafakitale.Ndi njira yachitsulo yochizira kutentha kwachitsulo yomwe imapanga kuchuluka kwazomwe zimapangidwira pamtunda wa chinthucho, zimatenthetsa mofulumira pamwamba pa gawolo, ndiyeno zimazimitsa mofulumira.Chida chotenthetsera chotenthetsera chimatanthawuza zida zamakina zomwe zimathandizira kutentha kwa zida zogwirira ntchito kuti zizimitsidwa pamwamba.Mfundo yofunikira pakuwotchera kwa induction: Chopangiracho chimayikidwa mu inductor, yomwe nthawi zambiri imakhala chubu chamkuwa chokhala ndi ma frequency apakati kapena ma frequency apamwamba a AC (1000-300000Hz kapena kupitilira apo).Kupanga kwa maginito osinthasintha kumapanga mphamvu yamagetsi yofanana muzogwirira ntchito.Zomwe zimapangidwira izi zimagawidwa mosiyanasiyana pamtunda, zamphamvu pamtunda, koma zimakhala zofooka mkati, zikuyandikira 0 pakati.Pogwiritsa ntchito khungu ili, pamwamba pa workpiece imatha kutentha kwambiri, ndipo mkati mwa masekondi pang'ono, kutentha kwapamwamba kumatha kuwonjezereka mpaka 800-1000 ℃, ndi kuwonjezeka pang'ono kwa kutentha kwapakati.Kulimba kwapamwamba kwambiri kwazitsulo 45 pambuyo pa kuzimitsa kwafupipafupi kumatha kufika HRC48-53.Pambuyo pa kuzimitsa kwafupipafupi, kukana kuvala ndi kuchitapo kanthu kudzawonjezeka kwambiri.

Kusiyanitsa pakati pa chitsulo chozimitsidwa ndi chosazimitsidwa 2.45 chitsulo: Pali kusiyana kwakukulu pakati pa chitsulo chozimitsidwa ndi chosazimitsidwa 45, makamaka chifukwa chitsulo chozimitsidwa ndi chosasunthika chikhoza kukwaniritsa kulimba kwakukulu ndi mphamvu zokwanira.Kulimba kwachitsulo kusanayambe kuzimitsa ndi kutentha kuli pafupi ndi HRC28, ndipo kuuma pambuyo pozimitsa ndi kutentha kuli pakati pa HRC28-55.Nthawi zambiri, magawo opangidwa ndi chitsulo chamtunduwu amafunikira zida zabwino zamakina, ndiko kuti, kukhalabe ndi mphamvu zambiri komanso kukhala ndi pulasitiki yabwino komanso kulimba.