High gami karfedaidaici kananan diamita m karfe bututukusan ba ya amfani da tsarin kashewa kai tsaye;Lokacin da adadin austenite da aka riƙe yana buƙata sosai, ƙarancin gami da ƙarfe ba za a kashe kai tsaye ba.Matsala ta al'ada ita ce bayyanar ripples a saman adaidaici kananan diamita m karfe bututu(kamar karkace ko kayan aikin hypoid) ƙarƙashin nauyin aiki.
Domin rage adadin da aka riƙe austenite da nakasawa a lokacin kai tsaye quenching, pre sanyaya za a iya amfani da su kusanci Ar1 zafin jiki bayan carburizing sa'an nan quenching.Hakanan za'a iya kashe madaidaicin ƙananan bututun ƙarfe maras sumul ɗin da farko lokacin da aka tura shi zuwa tanderun da ya fi ƙarfin Ar1.Bayan carburizing da quenching, daidaitattun ƙananan bututun ƙarfe maras sumul kuma za'a iya mai zafi zuwa zafin jiki sama da saman Ac1, ƙara tace hatsi da rage adadin ragowar austenite.
Madaidaicin ƙananan diamitasanyi birgima maras sumul karfe bututuan kashe kai tsaye don samun mafi girman ƙarfi da tauri, amma taurin ba shi da yawa.Za a iya auna taurin Layer na carburized tare da fayil.A taurin za a iya rage saboda kasancewar saura austenite a daidai kananan m bututu na high gami karfe.Wannan hanya kuma zata iya rage siminti akan iyakar hatsi.A lokacin da machining da carburized surface na daidaici kananan caliberbututu maras nauyiAna buƙatar, jinkirin sanyaya ko annealing za a karɓa.
Idan high hardenability karfe aka zaba ko shafi kayan aiki, ko da sanyaya ne jinkirin, saman kananan diamita daidai haske lokacin farin ciki bututu bango har yanzu yana da babban taurin.A wannan yanayin, ya kamata a karɓi magani mai laushi.Don guje wa hazo carbide cibiyar sadarwa, matsakaiciyar sanyaya dole ne a karɓi.Ɗauki wasu matakan kariya don hana decarburization yayin jinkirin sanyaya.Za a yi amfani da karfen da aka kashe daga baya.Bayan carburizing, jinkirin sanyaya ko hanyar quenching mai za a iya amfani da shi don tace hatsin da ke tsakiyar ainihin ƙananan bututun ƙarfe maras sumul ba tare da nakasu ko tsagewa ba.
A cikin tsarin kula da zafi na dumama quenching, carburizing da sanyaya ta hanyar reheating quenching, quenching surface za a iya gane ta surface quenching, kuma wadannan hanyoyin za a iya amfani da.Domin daidaici kananan sumul karfe bututu tare da babban gami abun ciki, shi ne mafi alhẽri a dauko da tsari hanya kusa da kai tsaye quenching, wato, reheat zuwa 15 ~ 25 ℃ (25 ℃ ~ 50 ℃) sama da tsakiyar canji batu zazzabi (ba shakka, bayan fagewar canjin yanayi).
Tsarin maganin zafi yana haɓaka ƙarfin ainihin ƙananan ƙananan diamita mai mahimmancin bututu maras kyau kuma yana da tauri mai kyau.Kusan duk sauran carbides da ke saman suna narkar da su.Ko da yake saura austenite abun ciki na irin wannan tsari daidaici kananan diamita sanyi birgima sumul karfe bututu ne kasa da na kai tsaye quenching, shi za a partially riƙe.Nakasar ta fi girma fiye da na kashewa kai tsaye, amma cikin kewayon da aka yarda.Kamar yadda ake kashewa kai tsaye, wannan hanya ba ta da wuya a yi amfani da ita don karfen carbon na yau da kullun.
Bayan jinkirin sanyaya ko quenching, za a iya mayar da karfen ruwa zuwa yanayin canjin lokaci dan kadan sama da na carburized Layer.Misali, karamin diamita gami da madaidaicin bututu maras nauyi za a iya sake yin zafi bayan carburizing da sanyaya a hankali, saboda ba zai iya tace hatsi da kashewa ba, ta yadda taurinsa ya ragu, nakasawa kadan ne, tauri kuma matsakaici;Layer Layer yana da carbides wanda ba a narkar da shi ba, don haka yana da babban taurin da gaggawa;Misali, madaidaicin ƙananan bututun ƙarfe maras sumul yana sake ɗora bayan carburizing da quenching, kuma an tsabtace hatsi gabaɗaya.Cibiyar tana da tsayi mai tsayi, ƙananan tauri, kuma saman ba shi da siminti na cibiyar sadarwa, don haka taurin yana da girma kuma taurin yana da kyau, amma rashin lahani shine cewa nakasa yana da girma.
Lokacin aikawa: Dec-06-2022