Chithandizo chozimitsa ndi kutentha chimatanthawuza njira yapawiri yochizira kutentha yoziziritsira komanso kutentha kwambiri, komwe cholinga chake ndi kuonetsetsa kuti chogwiriracho chili ndi zida zamakina zabwino zonse. Kutentha kwakukulu kumatanthauza kutentha pakati pa 500-650 ℃. Zigawo zambiri zozimitsidwa komanso zotenthedwa zimagwira ntchito pansi pa katundu wokulirapo, ndipo zimatengera kupsinjika, kupindika, kupindika, kugwedezeka kapena kumeta ubweya. Malo ena amakhalanso ndi mikwingwirima, yomwe imafunika kukana kuvala, ndi zina zotero. Mwachidule, mbalizo zimagwira ntchito pansi pa zovuta zosiyanasiyana. Mitundu yazigawozi imakhala ndi zida zamakina ndi makina osiyanasiyana, monga ma shafts, ndodo zolumikizira, ma studs, magiya, ndi zina zambiri, ndipo amagwiritsidwa ntchito kwambiri m'mafakitale opangira monga zida zamakina, magalimoto, ndi mathirakitala. Makamaka pazigawo zazikulu pakupanga makina olemera, kuzimitsa ndi kutenthetsa mankhwala amagwiritsidwa ntchito kwambiri. Choncho, kuzimitsa ndi kutentha mankhwala kumathandiza kwambiri pa chithandizo cha kutentha. M'zinthu zamakina, zofunikira zogwirira ntchito zozimitsidwa ndi kupsya mtima sizili zofanana chifukwa cha zovuta zawo zosiyanasiyana. Mbali zosiyanasiyana zozimitsidwa komanso zowuma ziyenera kukhala ndi zida zamakina, zomwe ndi kuphatikiza koyenera kwamphamvu komanso kulimba kwambiri, kuonetsetsa kuti mbalizo zikuyenda bwino.
Kuzimitsa ndi sitepe yoyamba ya ndondomekoyi, ndipo kutentha kwa kutentha kumadalira momwe chitsulo chimapangidwira, pamene chozimitsa chozimitsa chimasankhidwa potengera kuuma kwachitsulo ndi kukula kwa chigawo chachitsulo. Pambuyo pozimitsa, kupsinjika kwamkati kwachitsulo kumakhala kokwera komanso kosavuta, ndipo kutenthetsa ndikofunikira kuti muchepetse kupsinjika, kukulitsa kulimba, ndikusintha mphamvu. Tempering ndi yofunika kwambiri ndondomeko normalizing mawotchi zimatha kuzimitsidwa ndi mtima zitsulo. Mphepete mwazitsulo zamakina azitsulo zosiyanasiyana zomwe zimasintha ndi kutentha kwa kutentha, komwe kumatchedwanso curve yachitsulo, kungagwiritsidwe ntchito ngati maziko osankha kutentha kwa kutentha. Kwa kutentha kwapamwamba kwazitsulo zina zozimitsidwa ndi zowonongeka, tcheru chiyenera kuperekedwa pofuna kupewa kupezeka kwa mtundu wachiwiri wa brittleness kuti zitsimikizidwe kuti zitsulo zimagwiritsidwa ntchito. [2]
Chithandizo chozimitsa ndi kutentha chimagwiritsidwa ntchito kwambiri pazinthu zamapangidwe zomwe zimafuna magwiridwe antchito abwino kwambiri, makamaka omwe amagwira ntchito mosinthasintha, monga ma shaft amagalimoto, magiya, ma turbine shafts a injini zandege, ma disc a kompresa, etc. nthawi zambiri kuzimitsidwa ndi kupsya mtima pamaso pa pamwamba quenching kupeza zabwino ndi yunifolomu sorbate, amene n'kopindulitsa kwa pamwamba kuumitsa wosanjikiza komanso akhoza kukwaniritsa zabwino mabuku mawotchi katundu pachimake. Zigawo za nitride zimathandizidwa kuzimitsidwa ndikuwotcha musanayambe nitriding, zomwe zimatha kusintha magwiridwe antchito achitsulo ndikukonzekeretsa kapangidwe ka nitriding. Kuti tikwaniritse kusalala kwapamwamba kwa chida choyezera musanayambe kuzimitsa, kuchotsani nkhawa zomwe zimayambitsidwa ndi makina okhwima, kuchepetsa kutsekemera kozimitsa, ndi kupanga kuuma pambuyo pozimitsa kwambiri ndi yunifolomu, kuzimitsa ndi kutentha mankhwala kungathe kuchitika musanayambe kukonza molondola. Pakuti zitsulo zida ndi maukonde carbides kapena coarse mbewu pambuyo forging, kuzimitsira ndi kutentha mankhwala angagwiritsidwe ntchito kuthetsa maukonde carbide ndi yeretsani mbewu, pamene spheroid zing ndi carbides kusintha machinability ndi kukonzekera microstructure chithandizo chomaliza kutentha.
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Grace Ma
Nthawi yotumiza: Oct-31-2023
