Pambuyo quenching ndi tempering mankhwala a mipope opanda msokonezo, mbali opangidwa ndi zabwino mabuku mawotchi katundu ndipo chimagwiritsidwa ntchito mbali zosiyanasiyana zofunika structural, makamaka amene kulumikiza ndodo, mabawuti, magiya ndi mitsinje kuti ntchito pansi alternating katundu. Koma kuuma kwa pamwamba ndi kochepa komanso sikutha kuvala. Tempering + pamwamba kuzimitsa kungagwiritsidwe ntchito kukonza kuuma kwa magawo.
Mankhwala ake ali ndi carbon (C) zomwe zili 0.42 ~ 0.50%, Si zomwe zili 0.17 ~ 0.37%, Mn zili ndi 0.50 ~ 0.80%, ndi Cr content <= 0.25%.
Kutentha kovomerezeka kwa kutentha: kutentha kwa 850 ° C, kuzimitsa 840 ° C, kutentha 600 ° C.
Mipope yachitsulo yopanda msoko nthawi zambiri imapangidwa ndi chitsulo chamtengo wapatali cha carbon structural, chomwe sichiri cholimba komanso chosavuta kudula. Nthawi zambiri amagwiritsidwa ntchito poumba kupanga ma templates, maupangiri, zolemba zowongolera, ndi zina zambiri, koma chithandizo cha kutentha chimafunika.
1. Pambuyo pozimitsa ndi musanayambe kutentha, kuuma kwachitsulo kumakhala kwakukulu kuposa HRC55, yomwe ili yoyenera.
Kulimba kwapamwamba kwambiri pakugwiritsa ntchito ndi HRC55 (kuthamanga kwafupipafupi HRC58).
2. Osagwiritsa ntchito kutentha kwa kutentha kwa carburizing ndi kuzimitsa zitsulo.
Pambuyo pozimitsa ndi kutentha, mbalizo zimakhala ndi makina abwino omveka bwino ndipo zimagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana ofunikira, makamaka ndodo zolumikizira, mabawuti, magiya ndi ma shafts omwe amagwira ntchito mosinthasintha. Koma kuuma kwa pamwamba ndi kochepa komanso sikutha kuvala. Tempering + pamwamba kuzimitsa kungagwiritsidwe ntchito kukonza kuuma kwa magawo.
Chithandizo cha carburizing nthawi zambiri chimagwiritsidwa ntchito pazigawo zolemetsa zokhala ndi malo osamva komanso osagwira ntchito, ndipo kukana kwake kumakhala kokulirapo kuposa kuzimitsa ndi kutentha + pamwamba. Mpweya wa carbon pamtunda ndi 0.8-1.2%, ndipo pachimake nthawi zambiri ndi 0.1-0.25% (0.35% amagwiritsidwa ntchito pazochitika zapadera). Pambuyo pa chithandizo cha kutentha, pamwamba pamakhala kuuma kwambiri (HRC58-62), ndipo pachimake chimakhala cholimba chochepa komanso kukana mphamvu.
Nthawi yotumiza: Dec-16-2022