Njira yoziziritsa komanso yotentha kwambiri imagwiritsidwa ntchito m'magawo ambiri.Mwachitsanzo, njira yochizira kutentha ndi njira yomwe imatenthetsa zinthu zachitsulo kapena katundu wawo pa kutentha kofunikira, kuzizizira pa liwiro losankhidwa ndi njira, kusintha mawonekedwe awo amkati, ndikupeza ntchito yofunikira.Njira yamtunduwu imagwiritsidwa ntchito m'magawo ambiri opangira zinthu zamafakitale, koma ndodo ya pisitoni imachita bwanji kutentha?Kodi njira zake zochizira kutentha ndi ziti?Yantai Shunfa Component Pneumatic Co., Ltd. amayankha motere.
Cholinga cha kuzimitsa ndi kutenthetsa chithandizo ndikuwonetsetsa kuti ndodo ya pisitoni ili ndi zida zonse zamakina zomwe zimafanana ndi mphamvu, kuuma, pulasitiki, komanso kulimba bwino.Mapangidwe amkati ndi yunifolomu komanso sorbite yabwino, yomwe imakonzedwa kuti iwonongeke pamtunda.Ndodo yayitali ya silinda ya pistoni imakhala ndi kutalika kwa 3800-4200 ndi m'mimba mwake Φ 90- Φ 110mm, chifukwa chake zida zake zotenthetsera zimatenga ng'anjo yolimbana ndi 150KW kapena 600KW yoyimitsidwa mosalekeza ng'anjo yotenthetsera, kutentha kumayendetsedwa magawo awiri: chapamwamba. ndi pansi.Kutentha mankhwala ndondomeko magawo: machubu anayi inaimitsidwa mu ng'anjo imodzi bwino mtundu ng'anjo, ndi quenching Kutentha kutentha kwa 830 ± 10 ℃.Pambuyo pogwira kwa mphindi 160, machubu amazimitsidwa kawiri, ndi machubu awiri amazimitsidwa nthawi iliyonse.Madzi ozizira ozungulira amagwiritsidwa ntchito kuziziritsa machubu, omwe amayenda m'mwamba ndi pansi panthawi yozimitsa kuti atsimikizire kuti kuzizira kofananako kumakhala kokulirapo.Akazizira mpaka 100 ℃ (ndodo zimatulutsa nthunzi koma sizikuwira), madzi amathamangira mu ng'anjo yotentha yamtundu wa chitsime kuti atenthetse.
Kenako machubu anayi amatenthedwa pa 550 ± 10 ℃ nthawi imodzi, amasungidwa kwa mphindi 190, ndikutenthedwa madzi asanazizire.Pambuyo pa ndondomeko yomwe ili pamwambayi yozimitsa ndi kutentha, ntchitoyo imakhala yosakhazikika, ndipo kuuma kumasinthasintha pakati pa 210-255HBS.Palinso kusiyana kwakukulu pakuuma pakati pa kumtunda, pakati, ndi kumunsi kwa pisitoni ndodo yomweyo.Ndipo nthawi zina pamakhala kutentha kwapayekha ndi kuuma kosayenerera kapena mphamvu zochepa zomwe zimafunikira chithandizo chokonzekera.Kuyimitsa mapindikidwe ndikokulirapo, ndikuwonjezera kuvutikira kwa kuwongola kotsatira ndi kukonza kwamakina.Chifukwa cha kuuma kosauka kwa chitsulo cha 45, mawonekedwe amkati omwe amawonedwa ndi metallography si sorbite imodzi ndi yunifolomu, koma kuchuluka kwa sorbite yaulere kulipo pakati pake, ndipo mbali zina zimakhalanso ndi makina a sorbite ndi Widmann.
Kuti tithane ndi mavuto omwe ali pamwambawa, timagwiritsa ntchito chozimitsira kutentha kosalekeza kozimitsa ndi ng'anjo yoziziritsira ndikuzimitsa, ndikuyika machubu 2 pa chubu.Pambuyo potenthetsa ndi kutenthetsa, ng'anjoyo imazimitsa yokha, ndipo chubu limodzi limapangidwa pa beat iliyonse kuti zitsimikizire kutentha kofanana.Poganizira kuti kutentha kwa Ac3 kwa 45 chitsulo ndi 770-780 ℃, kuti tiyenge mbewu ndikuchepetsa mapindikidwe momwe tingathere, timatengera 790 ± 10 ℃ intercritical quenching njira yoyenga mbewu za austenite, ndikupeza Zakudyazi zabwino komanso zofananira. martensite atatha kuzimitsa, kuti apititse patsogolo mphamvu ndi kulimba kwa ndodo ya pisitoni.Kuti muchepetse mapindikidwe ndikuwongolera kuzizira kofananira kwa njira yozimitsa, tidawonjezera 5% -10% zowonjezera zowonjezera pamadzi apampopi.Pozimitsa, tinkagwiritsanso ntchito mpope wamadzi wozungulira kukakamiza njira yozizirira kuti izungulira kuti iziziziritsa.Kutentha kumatenthedwabe pa 550 ± 10 ℃, ndikuyimitsa komweko monga kale.Pambuyo pa kutentha, umazirala ndi madzi kuti asawonekere mtundu wachiwiri wa brittleness.Pambuyo pakuwongolera kwazomwe zili pamwambazi, mawonekedwe amkati amafanana ndi sorbite yowongoka bwino, ndikuchotsa ferrite yayikulu kapena reticular ndi mawonekedwe a Widmann, zomwe zimapangitsa kuuma kolimba komanso kolimba.
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Nthawi yotumiza: Sep-05-2023
