The oxidation wazojambulazimakhudzidwa makamaka ndi mankhwala a zitsulo zotentha ndi zinthu zamkati ndi zakunja za mphete yotentha (monga mpweya wa ng'anjo, kutentha kwa kutentha, etc.).
1) Chemical zikuchokera zipangizo zitsulo
Kuchuluka kwa oxide sikelo yomwe imapangidwa imagwirizana kwambiri ndi kapangidwe kake.Kukwera kwa carbon zili zitsulo, ndi zochepa oxide sikelo amapangidwa, makamaka pamene zili mpweya kuposa 0.3%.Izi zili choncho chifukwa mpweya wa carbon utatha, mpweya wa monoxide (CO) umapangidwa pamwamba pa chopanda kanthu, chomwe chimagwira ntchito poletsa kupitirira kwa okosijeni.Aloyi zitsulo Cr, Ni, Al, Mo, Si ndi zinthu zina, Kutentha kwambiri pamene mapangidwe sikelo ndi zochepa, chifukwa zinthu zimenezi anali oxidized, akhoza kupanga wosanjikiza pamwamba zitsulo wandiweyani okusayidi filimu, ndi chitsulo ali pafupi ndi matenthedwe coefficient yowonjezera, ndipo mwamphamvu Ufumuyo pamwamba, si zophweka kuswa ndi kugwa, kotero kupewa makutidwe ndi okosijeni zina, chitetezo.Chitsulo chosasunthika chopanda kutentha ndi chitsulo cha aloyi chokhala ndi zinthu zambiri zomwe zili pamwambazi, ndipo pamene zomwe zili mu Ni ndi Cr muzitsulo ndi 13%?Pa 20%, pafupifupi palibe okosijeni kumachitika.
2) Kuphatikizika kwa gasi wa ng'anjo
Ng'anjo mpweya zikuchokera ali ndi chikoka pa mapangidwekupangasikelo, chimodzimodzizopangira zitsulomu mpweya wotentha wosiyanasiyana, mapangidwe a sikelo si ofanana, mu mpweya wa ng'anjo ya oxidizing, mapangidwe a sikelo ndiambiri, imvi yowala, yosavuta kuchotsa;Mu ng'anjo yopanda ndale (yomwe imakhala ndi N2) ndi kuchepetsa mpweya wa ng'anjo (yokhala ndi CO, H2, ndi zina zotero), sikelo ya oxide yomwe imapangidwa imakhala yakuda kwambiri ndipo sivuta kuchotsa.Pofuna kuchepetsa mapangidwe ndi kuchotsedwa kwa oxide sikelo, chidwi chiyenera kuperekedwa pakuwongolera mpweya wa ng'anjo pagawo lililonse la kutentha.Nthawi zambiri, ma forgings ali pansi pa 1000 ℃, ndipo mpweya wa ng'anjo wa okosijeni umagwiritsidwa ntchito potentha, chifukwa kutentha sikuli kwakukulu panthawiyi, ndondomeko ya okosijeni si yovuta kwambiri, ndipo sikelo ya oxide yomwe imapangidwa ndi yosavuta kuchotsa;Pamene kutentha kupitirira 1000 ℃, makamaka mu siteji ya kutentha kwambiri, kuchepetsa mpweya wa ng'anjo kapena mpweya wosalowerera ndale uyenera kugwiritsidwa ntchito kuchepetsa kupanga oxide sikelo.
Chikhalidwe cha mpweya wa ng'anjo mu ng'anjo yotentha yamoto zimadalira kuchuluka kwa mpweya womwe umaperekedwa kumafuta panthawi yoyaka.Ngati mpweya wochuluka mu ng'anjoyo ndi waukulu kwambiri, mpweya wa mpweya ndi wochuluka kwambiri, mpweya wa ng'anjo ndi okosijeni, chitsulo cha oxide sikelo ndi chochuluka, ngati mpweya wochuluka wa ng'anjo ndi 0,4?Pa 0,5, mpweya wa ng'anjo umachepetsedwa, kupanga malo otetezera kuti asapangidwe ndi oxide sikelo ndikukwaniritsa kutentha kwa okosijeni.

3) Kutentha kutentha
Kutentha kwa kutentha kumakhalanso chinthu chachikulu chopangira mapangidwe a sikelo, kukweza kutentha kwa kutentha, kumapangitsanso makutidwe ndi okosijeni kwambiri.Mu 570 ℃?Pamaso pa 600 ℃, kupanga okosijeni kumachedwa, kuchokera ku 700 ℃ kuthamanga kwa okosijeni kumathamanga, mpaka 900 ℃?Pa 950 ℃, oxidation ndi yofunika kwambiri.Ngati makutidwe ndi okosijeni mlingo amaganiziridwa kuti 1 pa 900 ° C, 2 pa 1000 ° C, 3.5 pa 1100 ° C, ndi 7 pa 1300 ° C, kuwonjezeka kasanu ndi kamodzi.
4) Kutentha nthawi
Kutalikirapo nthawi yotentha yamagetsi mu mpweya wa oxidizing mu ng'anjo, kufalikira kwa makutidwe ndi okosijeni kukulirakulira, ndipo kuchuluka kwa oxide kumapangidwa, makamaka pakutentha kwapamwamba, kotero nthawi yotentha iyenera kuchepetsedwa momwe mungathere. , makamaka nthawi yotentha ndi nthawi yogwira pa kutentha kwakukulu iyenera kufupikitsidwa momwe zingathere.
Komanso, forging billet pa kutentha kwambiri osati oxidized mu ng'anjo, komanso kupanga ndondomeko, ngakhale oxide sikelo pa billet kutsukidwa, ngati billet kutentha akadali mkulu, adzakhala oxidized kawiri, koma Kuchuluka kwa okosijeni kumachepa pang'onopang'ono ndi kuchepa kwa kutentha kwa billet.