Gabatarwa na H13 mutu karfe

Gabatarwa na H13 mutu karfe

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1. Ninka don gyara manufar wannan sakin layi
H13 mutu karfeana amfani da shi don kera ƙirƙira ya mutu tare da babban tasiri mai nauyi, zafi mai zafi ya mutu, daidaitaccen ƙirƙira ya mutu;mutu-simintin mutuwa don aluminum, jan karfe da kuma gami.

Yana da gabatarwar H13 iska quench hardening zafi aiki mutu karfe daga Amurka.Kaddarorin sa da amfani da su daidai suke da na karfe 4Cr5MoSiV, amma saboda girman abun ciki na vanadium, matsakaicin zafinsa (digiri 600) aikin sa ya fi 4Cr5MoSiV karfe.Yana da wani wakilin karfe sa tare da fadi da kewayon amfani a zafi aiki mutu karfe.
2. Features
Electroslag remelted karfe, karfe yana da high hardenability da thermal tsaga juriya, karfe ya ƙunshi mafi girma abun ciki na carbon da vanadium, mai kyau lalacewa juriya, in mun gwada da rauni tauri, da kyau zafi juriya.A yanayin zafi mafi girma, yana da mafi kyawun ƙarfi da taurin kai, juriya mai ƙarfi da ƙarfi, ingantattun kaddarorin injiniyoyi da kwanciyar hankali mai ƙarfi.
3. Abubuwan sinadaran karfe
H13 karfe ne C-Cr-Mo-Si-V karfe, wanda aka yadu amfani a duniya.A sa'i daya kuma, masana da dama daga kasashe daban-daban sun gudanar da bincike mai zurfi a kansa, kuma suna binciken yadda ake inganta sinadaran.Ana amfani da ƙarfe ko'ina kuma yana da kyawawan halaye, galibi an ƙaddara ta hanyar sinadarai na ƙarfe.Tabbas, dole ne a rage abubuwan ƙazanta a cikin ƙarfe.Wasu bayanai sun nuna cewa lokacin da Rm ya kasance 1550MPa, an rage abun ciki na sulfur na kayan daga 0.005% zuwa 0.003%, wanda zai kara tasirin tasirin ta kusan 13J.Babu shakka, ma'aunin NADCA 207-2003 ya nuna cewa abun ciki na sulfur na ƙimar H13 karfe yakamata ya zama ƙasa da 0.005%, yayin da abun ciki na sulfur na mafi girma yakamata ya zama ƙasa da 0.003% S da 0.015% P.An bincika abun da ke ciki na karfe H13 a ƙasa.

Carbon: American AISI H13, UNS T20813, ASTM (sabuwar sigar) H13 da FED QQ-T-570 H13 karfe suna da abun ciki na carbon (0.32 ~ 0.45)%, wanda shine mafi yawan abubuwan carbon na duka.H13 karfe.Fadi.Abubuwan da ke cikin carbon na Jamus X40CrMoV5-1 da 1.2344 shine (0.37 ~ 0.43)%, kuma kewayon abun cikin carbon yana kunkuntar.A cikin Jamusanci DIN17350, abun ciki na carbon X38CrMoV5-1 shine (0.36 ~ 0.42)%.Abubuwan da ke cikin carbon na SKD 61 a Japan shine (0.32 ~ 0.42)%.Abubuwan da ke cikin carbon na 4Cr5MoSiV1 da SM 4Cr5MoSiV1 a cikin ƙasata GB/T 1299 da YB/T 094 shine (0.32 ~ 0.42)% da (0.32 ~ 0.45)%, waɗanda suke daidai da SKD61 da AISI H13, bi da bi.Musamman, ya kamata a nuna cewa abun ciki na carbon na H13 karfe a cikin Arewacin Amurka Die Casting Association NADCA 207-90, 207-97 da 207-2003 ma'auni an kayyade a matsayin (0.37 ~ 0.42)%.

H13 karfe dauke da 5% Cr ya kamata ya sami babban tauri, don haka abun ciki na C ya kamata a kiyaye shi a matakin da ke samar da ƙananan adadin mahadi C.Woodyatt da Krauss sun nuna cewa a kan zane-zane na zamani na Fe-Cr-C a 870 ℃, matsayi na H13 karfe ya fi kyau a mahaɗin austenite A da (A + M3C + M7C3) yankuna uku.Madaidaicin abun ciki na C shine kusan 0.4%.Har ila yau, adadi ya nuna karuwar adadin C ko Cr don ƙara yawan M7C3, da kuma karafa na A2 da D2 tare da mafi girman juriya don kwatantawa.Hakanan yana da mahimmanci a kula da ƙarancin abun ciki na C don sa ma'anar Ms na ƙarfe ta ɗauki matakin zafi mai ɗanɗano (Ms of H13 karfe ana kwatanta shi da 340 ℃), ta yadda za'a iya kashe ƙarfe zuwa zafin daki.Sami tsarin fili na gami C wanda ya ƙunshi martensite tare da ƙaramin adadin saura A da ragowar uniform ɗin rarrabawa, kuma sami tsarin tsarin martensite na uniform bayan tempering.Guji canza austenite da aka riƙe da yawa a yanayin zafin aiki don shafar aikin aiki ko nakasar kayan aikin.Waɗannan ƙananan adadin austenite da aka riƙe ya ​​kamata a canza su gaba ɗaya a cikin matakai biyu ko uku bayan quenching.Af, an nuna a nan cewa martensite tsarin samu bayan quenching na H13 karfe ne lath M + karamin adadin flake M + karamin adadin saura A. A sosai m gami carbides precipitated a kan lath M bayan tempering.Malaman cikin gida ma sun yi wasu ayyuka


Lokacin aikawa: Dec-14-2021