Quenching na karfe shine don dumama karfen zuwa madaidaicin zafin jiki Ac3a (sub-eutectic karfe) ko Ac1 (over-eutectic karfe) sama da zafin jiki, rike na wani lokaci, ta yadda gaba daya ko bangare na austenitization, sannan kuma cikin sauri. fiye da mahimmancin yanayin sanyaya na yawan sanyaya na saurin sanyaya ga Ms a ƙasa (ko Ms kusa da isothermal) don canza tsarin martensite a (ko bainite) tsarin kula da zafi. Yawancin lokaci kuma aluminum gami, jan ƙarfe gami, titanium gami, gilashin zafi da sauran kayan m bayani mataimakin "ko tare da m sanyaya tsari zafi magani tsari kira quenching".
Manufar quenching:
(1) Haɓaka kayan aikin ƙarfe na ƙarfe zuwa abu ko sassa.
(2) inganta kayan abu ko kaddarorin sinadarai na wasu ƙarfe na musamman
Hanyoyi na kashewa: galibi kashe ruwa guda ɗaya, wuta mai ruwa biyu, quenching mai daraja, quenching isothermal, quenching na gida da sauransu.
Tempering ne quenched karfe a cikin wani abu ko part mai tsanani zuwa wani zafin jiki, bayan rike wani lokaci na lokaci, sanyaya a cikin wani hanya na zafi magani tsari, tempering ne wani aiki nan da nan bayan quenching, yawanci shi ne kuma workpiece don zafi magani. na ƙarshe na tsari, don haka tsarin haɗin gwiwa na quenching da tempering ana kiransa magani na ƙarshe.
Matsayin fushi shine:
(1) inganta kwanciyar hankali na kungiyar, don haka da cewa workpiece a cikin yin amfani da tsari daina faruwa a cikin kungiyar na canji, sabõda haka, workpiece lissafi da kaddarorin zama barga.
(2) Kawar da damuwa na ciki don inganta aikin aikin aikin da daidaita ma'auni na workpiece.
(3) daidaita kayan aikin injiniya na karfe don saduwa da buƙatun amfani.
Abubuwan buƙatun zafin jiki: daban-daban amfani da kayan aikin yakamata a yi zafi a yanayin zafi daban-daban don saduwa da buƙatun amfani. (1) yankan kayan aiki, bearings, carburizing quenched sassa, surface quenched sassa yawanci tempered a 250 ℃ a kasa da low-zazzabi tempering, low-zazzabi tempering bayan taurin bai canza da yawa, da ciki danniya ne rage, da taurin ne dan kadan. inganta. (2) bazara a cikin 350 ~ 500 ℃ karkashin matsakaici zazzabi tempering, na iya samun babban elasticity da zama dole tauri. (3) matsakaici-carbon tsarin karfe sassa sanya daga high-zazzabi tempering yawanci a 500 ~ 600 ℃, domin samun dace ƙarfi da taurin mai kyau wasa.
Normalizing wani nau'i ne na maganin zafi don inganta ƙarfin ƙarfe, kayan aikin karfe suna mai zafi zuwa zafin jiki na Ac3 sama da 30 ~ 50 ℃, bayan riƙe wani lokaci daga cikin iska mai sanyaya. Babban fasalin shine cewa yawan sanyaya yana da sauri fiye da dawowar kuma ƙasa da quenching, normalizing na iya zama ɗan sauri da sauri sanyaya a cikin gyaran ƙwayar kristal na ƙarfe, ƙarin guda ɗaya na iya samun ƙarfi mai gamsarwa, kuma yana iya haɓaka ƙaramin ƙarfi (ƙimar AKV). ), rage hali zuwa fatattaka na bangaren, wasu low gami zafi birgima karfe farantin, low gami karfe forgings da simintin gyaran kafa ta normalizing, da m inji Properties na kayan. ana iya kunnawa don ingantawa, amma kuma inganta aikin Yankan.
Annealing shi ne karfen ana zafi da shi sannu a hankali zuwa wani zafin jiki, ana kiyaye shi na ɗan lokaci kaɗan, sannan kuma a daidai ƙimar yankin sanyi na tsarin maganin zafi na ƙarfe. Maganin zafi mai raɗaɗi ya kasu kashi zuwa cikakkiyar ɓarna, ɓarnar da ba ta cika da damuwa ba. Ana iya amfani da kaddarorin injina na kayan da aka cirewa zuwa Kinze, kuma ana iya gano su ta gwajin taurin. Ana ba da kayan ƙarfe da yawa a cikin yanayin da aka dawo da zafi, ana iya amfani da gwajin taurin ƙarfe na gwajin taurin Locke, gwada taurin HRB, don faranti na ƙarfe, filayen ƙarfe, da bututun ƙarfe na bakin ciki, zaku iya amfani da gwajin taurin Locke na saman. , Kayan gini HRT taurin.
Manufar quenching da annealing: 1 don inganta kaya don kawar da m ku a cikin simintin gyaran kafa, ƙirƙira, mirgina da walda tsarin lalacewa ta hanyar iri-iri na kungiyar lahani, kazalika da saura danniya, don hana nakasawa na workpiece, fatattaka. 2 don tausasa kayan aikin don aiwatar da yankan. 3 don tsaftace hatsi, inganta ƙungiyar don inganta kayan aikin injiniya na kayan aiki. 4 don maganin zafi na ƙarshe (quenching, tempering) don yin aiki mai kyau na matakan kungiya.
Hanyoyin da aka saba amfani da su na annealing sune:
(1) cikakkar annealing. Ana amfani da shi don tace ƙarfe na tsakiya da ƙasa ta hanyar simintin gyare-gyare, ƙirƙira da walƙiya bayan fitowar ƙarancin kayan inji na babban nama mai zafi.
(2) ciwon jijiyoyi. Ana amfani da shi don rage girman taurin kayan aiki da ƙarfe mai ɗaukar nauyi bayan ƙirƙira.
(3) kawar da isothermal. An yi amfani da shi zuwa Jiangdu wasu nickel, chromium abun ciki kwana karfe gami tsarin karfe babban taurin.
(4) recrystallization annealing. An yi amfani da shi don trolley karfe waya, takardar a cikin sanyi zane, sanyi mirgina tsari na hardening sabon abu (taurin yana ƙaruwa, filastik yana raguwa)
(5) graphitization annealing. Ana amfani da shi don yin simintin ƙarfe mai ƙunshe da adadi mai yawa na carburized jikin zuwa cikin simintin ƙarfe mai yuwuwa tare da filastik mai kyau.
(6) yaduwa annealing. An yi amfani da shi don yin simintin simintin gyare-gyaren gami, inganta aikin sa.
(7) rage damuwa. An yi amfani da shi don kawar da damuwa na ciki na simintin ƙarfe da walƙiya.
Lokacin aikawa: Dec-01-2024
