42CrMo gami karfe bututu manufacturer garanti tallace-tallace
Manufar 42CrMo bututu maras nauyi: ƙarfe na musamman don gada shine "42CrMo", ƙarfe na musamman don girdar mota shine "42CrMo", kuma ƙarfe na musamman don jirgin ruwa shine "42CrMo". Irin wannan ƙarfe yana inganta kayan aikin ƙarfe ta hanyar daidaita abun ciki na carbon (c). Saboda haka, bisa ga abun ciki na carbon, irin wannan karfe za a iya raba zuwa: low carbon karfe - da carbon abun ciki ne gaba daya kasa da 0.25%, kamar 10 da 20 karfe; Medium carbon karfe - da carbon abun ciki ne kullum tsakanin 0.25 ~ 0.60%, kamar 35 da kuma 45 karfe; Babban carbon karfe - abun ciki na carbon gabaɗaya ya fi 0.60%. Ba a yawan amfani da irin wannan ƙarfe wajen kera bututun ƙarfe. 42CrMo karfe ne mai matsananci-high ƙarfi karfe tare da babban ƙarfi da tauri, mai kyau hardenability, babu wani fili tempering brittleness, high gajiya iyaka da mahara tasiri juriya bayan quenching da tempering jiyya, da kuma mai kyau low-zazzabi tasiri taurin. 42CrMo karfe ya dace da kera manyan gyare-gyaren filastik masu girma da matsakaici waɗanda ke buƙatar takamaiman ƙarfi da tauri. Taurin: annealed, 147 ~ 241hb, 42CrMo
Ƙarfin ƙarfi σ b (MPa): ≥1080(110)
Ƙarfin Haɓaka σ s (MPa): ≥930(95)
Tsawaita δ 5 (%): ≥12
Rage yanki ψ (%): ≥45
Tasirin makamashi Akv (J): ≥ 63
Ƙimar taurin tasiri α kv (J/cm2): ≥78(8)
Taurin: ≤ 217hb
Don inganta rayuwar sabis na mutu zuwa fiye da sau 800000, ana iya aiwatar da hanyar hardening na quenching da ƙananan zafin jiki don ƙarancin ƙarfe na ƙarfe. A lokacin quenching, shi za a preheated a 500-600 ℃ 2-4 hours, sa'an nan kiyaye a 850-880 ℃ na wani lokaci (akalla 2 hours), sanyaya a cikin man fetur zuwa 50-100 ℃ da kuma sanyaya da iska. Tauri bayan quenching iya isa 50-52hrc. Don hana fashewa, za a yi zafi a 200 ℃ nan da nan. Bayan zafin jiki, ana iya kiyaye taurin sama da 48hrc. Tsarin wanka na gishiri mai tsaka tsaki vanadization tsarin kulawa na karfe 42CrMo. Za'a iya samun Layer na carbide ta hanyar tsaka tsakin gishiri bath bath magani na 42CrMo karfe.
1. Carbon vanadium fili, da carburized Layer yana da uniform tsarin, mai kyau ci gaba da compactness, uniform kauri, m tsarin, high microhardness da high lalacewa juriya, da kuma surface taurin, sa juriya da mannewa juriya an inganta sosai.
2.Solubility na VC a cikin austenite ya fi yadda yake a cikin ferrite. Tare da rage yawan zafin jiki, VC yana haɓakawa daga ferrite, wanda ke sa haɗin gwiwa ya ƙarfafa da kuma tsaftace hatsi, kuma Layer fili yana nuna taurin mafi girma. 42CrMo karfe nasa ne na babban carbon da babban chromium ledeburite karfe, tare da babban abun ciki na carbide, lissafin kusan 20%, kuma sau da yawa ana rarraba rashin daidaituwa a cikin bel ko cibiyar sadarwa, tare da rarrabuwa mai tsanani. Duk da haka, maganin zafi na al'ada yana da wuya a canza rarrabuwa na carbide, wanda ke da matukar tasiri ga kayan aikin injiniya na karfe da kuma rayuwar sabis na mutu. Siffa da girman carbides kuma suna da tasiri mai yawa akan kaddarorin karfe. Musamman ma, manyan carbides masu kaifi na kusurwa suna da tasiri mai yawa akan matrix na karfe kuma sau da yawa ya zama tushen raunin gajiya. Saboda haka, shi wajibi ne don canza ƙirƙira na raw birgima karfe, cikakken murkushe da eutectic carbides sanya su lafiya da kuma a ko'ina rarraba, da kuma fiber tsarin da aka rarraba a kusa da kogo ko ba directionally, Don inganta transverse inji Properties na karfe. .
A lokacin ƙirƙira, billet ɗin zai baci kuma a zana shi daga bangarori daban-daban na lokuta da yawa, kuma a ƙirƙira shi ta hanyar "haske guda biyu da nauyi ɗaya", wato, billet ɗin za a yi sauƙaƙa da sauƙi a farkon ƙirƙira don hana karaya. Ana iya buge shi sosai a matsakaicin zafin jiki na 980 ~ 1020 ℃ don tabbatar da murkushe carbides. 42CrMo karfe ba ƙirƙira, kuma m bayani biyu refining magani da aka soma, wato, sakandare preheating a game da 500 ℃ da 800 ℃ da m bayani magani a 1100 ~ 1150 ℃, Quenching da zafi mai ko isothermal quenching, high zafin jiki tempering a 750 ℃, dumama a 960 ℃ bayan machining da karshe zafi magani bayan man sanyaya kuma iya tace carbides, zagaye gefuna da sasanninta da kuma tace hatsi.
