Tsarin Kula da zafi na Babban Madaidaicin Karfe Bututu

Tsari
Vacuum quenching vacuum quenching furnaces sun kasu kashi biyu bisa ga hanyoyin sanyaya: man quenching da gas quenching, kuma an raba su gida guda ɗaya da nau'ikan ɗakuna biyu bisa ga adadin tashoshi.Tushen 904 Mountain/Weidao na cikin tanderun aiki na lokaci-lokaci.Wuraren da ke kashe mai na vakuum ɗakuna biyu ne, tare da abubuwan dumama wutar lantarki da aka sanya a cikin ɗakin baya da kuma ramukan mai da ke ƙasan ɗakin gaba.Bayan aikin da aka yi zafi da kuma rufe shi, an motsa shi a cikin ɗakin gaba.Bayan rufe kofa ta tsakiya, iskar gas yana cika cikin ɗakin gaba zuwa kusan 2.66% sau 26;LO ~ 1.01% sau 26;10 Pa (200-760mm mercury shafi), ƙara mai.quenching mai na iya haifar da lalacewar aikin cikin sauƙi.Saboda girman aikin sa, gagarumin carburization na bakin ciki na bakin ciki na iya faruwa a ƙarƙashin aikin ɗan gajeren fim mai zafi mai zafi.Bugu da ƙari, mannewar carbon baƙar fata da mai a saman ba shi da amfani don sauƙaƙe tsarin maganin zafi.Haɓaka fasahar quenching ta musamman ta'allaka ne a cikin haɓakar iskar gas sanyaya quenching tanderu tare da kyakkyawan aiki da tasha ɗaya.Hakanan za'a iya amfani da tanderun da aka ambata a baya don kashe iskar gas (sayar da jirgin sama a cikin ɗakin gaba), amma aikin nau'in tashar tashoshi yana da wahala a samar da babban adadin wutar lantarki, kuma yana da sauƙin haifar da yanki na aiki. nakasawa ko canza yanayin aikin aikin don haɓaka nakasawa yayin motsi mai zafi.Tasha guda ɗaya mai sanyaya iska tana sanyaya ta hanyar sanyaya jet a cikin ɗakin dumama bayan an gama dumama da rufewa.Gudun sanyayawar iska ba ta da sauri kamar na sanyaya mai, haka nan kuma ya yi ƙasa da narkakken gishirin narkakkar da ake yi a cikin hanyoyin kashewa na gargajiya.Saboda haka, ci gaba da ƙara matsa lamba na feshi sanyaya dakin, kara kwarara kudi, da kuma yin amfani da inert gas helium da hydrogen tare da Molar taro karami fiye da nitrogen da argon su ne babban tushen ci gaban injin quenching fasahar a yau.A ƙarshen 1970s, an ƙara matsa lamba na sanyaya nitrogen daga (1-2)% 26 sau;Ƙara 10Pa zuwa (5-6)% sau 26;10Pa, yin ƙarfin sanyaya kusa da sanyaya mai a ƙarƙashin matsa lamba na al'ada.A tsakiyar 1980s, matsananciyar matsa lamba gas quenching ya bayyana, ta amfani da (10-20)% 26 sau;Helium a 10Pa, tare da ikon sanyaya daidai ko dan kadan sama da kashe mai, ya shiga aikin masana'antu.A farkon shekarun 1990, an karɓi 40% sau 26;Gas na hydrogen 10Pa, wanda ke kusa da ikon sanyaya ruwa, yana kan matakin farko.Ƙasashen da suka ci gaba a masana'antu sun ci gaba zuwa matsanancin matsin lamba (5-6)% sau 26;10. Pa gas quenching ne babban bangare, yayin da dangantaka tsakanin tururi matsa lamba (theoretical darajar) da kuma yawan zafin jiki na wasu karafa samar a kasar Sin ne har yanzu a cikin mataki na general matsa lamba quenching (2% 26times; 10Pa).

Sakamako shine tsarin karkatar da injin carburization.Bayan dumama zuwa carburizing zafin jiki a cikin injin da kuma rike shi ga surface tsarkakewa da kuma kunnawa, wani bakin ciki carburizing wadata iskar gas (duba sarrafa yanayi zafi magani) da aka gabatar, da infiltration da za'ayi a wani mummunan matsa lamba na kusan 1330Pa (10T0rr).Sa'an nan kuma, an dakatar da iskar gas (mai damuwa) don yaduwa.Madaidaicin bututun ƙarfe da aka kashe bayan carburization yana ɗaukar hanyar kashewa ta lokaci ɗaya, wacce ta fara yanke wutar lantarki, ta wuce nitrogen don kwantar da aikin aiki zuwa madaidaicin madaidaicin A, a ƙasa, yana haifar da canjin lokaci na ciki, sannan ya dakatar da iskar gas, yana farawa famfo. , kuma yana ɗaga zafin jiki.