AISI 8620 masana'antar simintin saka hannun jari ba jumla ba ce kawai - ma'aunin aiki ne. Lokacin da jirgin ka gear dole ne tsira 150,000 hawan keke karkashin 350 MPa na'ura mai aiki da karfin ruwa lodi, ko kuma mota watsa gidaje jure maimaita zafi zafi daga -40°C zuwa +180°C, abu zabin da sarrafa tsari daina zama zažužžukan. Sun zama wadanda ba za a iya sasantawa ba. Karfe AISI 8620 yana ba da ma'auni mai kyau: zurfin taurin daga nickel-chromium-molybdenum alloying, ingantaccen microstructure bayan carburizing, da ƙaƙƙarfan ainihin mahimmanci - * idan * tsarin simintin yana kiyaye amincin ƙarfe. Wannan shine inda yawancin masu samar da kayayyaki suka kasa-ba a maganin zafi ba, amma a baya: a cikin ƙirar ƙira, kwanciyar hankali harsashi, da sarrafa ƙarfi.
Me yasa AISI 8620 ke Bukatar Simintin Zuba Jari-Ba Yashi ko Mutuwa
Yashi simintin gyare-gyare yana gabatar da ƙwanƙwasa hatsi kusa da ganuwar mold; jefa simintin mutuwa ba zai iya ɗaukar babban wurin narkewar AISI 8620 (1490°C) ko azancin sa ga fashewar sanyi mai sauri ba. Zuba jari yana warware duka biyun. Harsashin yumbun sa yana ba da damar jinkirin, ƙarfafawar kwatance-mahimmanci don cimma zurfin yanayin harka guda ɗaya a lokacin carburizing na gaba. Mun auna haɓaka har zuwa 22% a cikin yanayin juzu'in juzu'in juzu'in juzu'in juzu'i tare da daidai da yashi-yashi akan guraben kaya iri ɗaya. Ƙari mai mahimmanci: dillalin duniyar da muka ba da abokin ciniki na Tier-1 EV drivetrain ya nuna faifan girman 0.08 mm bayan sa'o'i 500 na hanzarin gwajin lalacewa-a kan 0.21 mm a cikin sashin simintin yashi mai gasa. Bambancin ba machining ba ne. Ya kasance ƙananan tsarin simintin gyare-gyare.
Hudu Marasa Tattaunawa a cikin Kamfanin Simintin Zuba Jari na AISI 8620
Ba duk abubuwan da aka samo ba suna kula da AISI 8620 tare da tsauri daidai. Ga abin da ke raba iyawar manufa-muhimmanci da fitarwar kayayyaki:
- Raw kayan ganowa zuwa lambar zafi- ba tare da wani tsari ba. Kowane AISI 8620 ingot an ba da takardar shedar zuwa ASTM A304, tare da cikakkun rahotanni na Ni (0.4-0.7%), Cr (0.4-0.6%), da Mo (0.15-0.25%) abun ciki. Maɓallin waje ± 0.03% yana haifar da keɓewa ta atomatik.
- Ka'idojin bushewar Shell an daidaita su zuwa wurin raɓa, ba lokaci ba. Humidity sama da 45% RH yayin lalatawar yana haifar da micro-porosity a cikin kewayon 5-12 μm-wanda X-ray ba zai iya gane shi ba amma bala'i a ƙarƙashin nauyin gajiya. Kilns ɗin mu na yin rajistar ainihin lokacin RH da zafin jiki kowane sakan 90.
- Pre-carburizing danniya taimako a 650 ° C na 4 hours-ba na zaɓi ba. Simintin gyare-gyaren da ba a sauke ba yana damuwa da karkatar da kayan aiki yayin tauraruwar lamarin. Muna tabbatar da saura danniya ta hanyar auna ma'aunin rami-hakowa akan samfuran rubutun farko.
- Binciken tushen simintin simintin CMM kafin kowane injin. Muna bincika kiran GD&T masu mahimmanci guda 12-ciki har da bayanin martaba akan gear gear flanks da kuma jurewar matsayi na alaƙa da fuska-a matakin kore-jihar. Idan ta kasa a nan, babu adadin gyaran CNC da ke ajiye ɓangaren.
Inda Ka'idodin Kayayyakin Kayayyakin Yanke Kusurwoyi-da Yadda Ba Mu Yi ba
Wasu masana'antun simintin saka hannun jari na AISI 8620 sun tsallake gurɓataccen iska, suna ɗaukar daidaitaccen aikin narkewar EAF ya isa. Amma abun ciki na iskar oxygen sama da 20 ppm yana haifar da kirtani na oxide waɗanda ke fara rami a cikin haƙoran gear. Muna amfani da tacewa VIM+ESR don duk sararin samaniya da odar motoci - rage O₂ zuwa <8 ppm da sulfur zuwa <0.002%. Wata hanyar gajeriyar hanya ta gama gari: ta yin amfani da suturar harsashi na jeri-na-yi maimakon slurries na tushen zircon wanda aka inganta don manyan ƙarfe masu ƙarfi. Abubuwan da aka rufe na yau da kullun suna zurfafa a 1400 ° C, suna gabatar da inclusions na refractory. Samfurin mu na slurry ya haɗa da 12% fused silica ɗaure da rarrabuwa-girman rarrabuwa tabbatar da Laser diffraction-kowane tsari.
Abokan ciniki sukan tambayi: "Shin za ku iya riƙe ± 0.025 mm akan diamita na 120 mm farar diamita?" Ee-amma kawai idan bambance-bambancen kauri na bangon simintin simintin simintin ya tsaya tsakanin ± 0.3 mm. Wannan shine dalilin da ya sa injiniyoyinmu na kayan aikinmu ke gudanar da simintin gyare-gyare (ta amfani da MAGMASOFT®) * kafin * amincewar tsari. Muna taswirar ma'aunin zafi mai zafi a duk faɗin bishiyar simintin, sannan mu daidaita gating don kawar da wuraren zafi. Kwata na ƙarshe, wannan ya hana ɓangarorin 37 akan oda ɗaya don taron gatari.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD.
An kafa shi a Qingdao, QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki da ƙayyadaddun kayan aikin ISO 9001 inda AISI 8620 ba a keɓanta ba - an haɗa shi. CNC machining yana faruwa a bene ɗaya, tare da raba madaukai bayanan CMM. Lokacin da babu komai ya zo daga simintin gyare-gyare, ainihin lissafin sa yana ciyarwa kai tsaye zuwa cikin diyya ta hanyar kayan aiki na shirin CNC-babu shigar da hannun jari. Jadawalin jiyya na zafi suna da alaƙa da jefa kuri'a a cikin MES ɗinmu, don haka carburizing sigogi kai-daidaita bisa sakamakon gwajin zafin da ya gabata daga ainihin zafin.
Ba mu sayar da sassa. Muna isar da shirye-shiryen aiki. Wannan yana nufin tabbatar da tsarin raga na kayan aiki tare da bayanan gani kafin jigilar kaya. Yana nufin samar da cikakkun takaddun shaida, bayanan ginin harsashi, da kuma bayanan kula da zafi bayan an buƙata. Yana nufin riƙe hannun jari na AISI 8620 master alloys daga ƙwararrun masu samar da kayayyaki guda uku-don haka rushewar sarkar samar da kayayyaki baya jinkirta jadawalin samfurin ku.
Masana'antar simintin saka hannun jari ta AISI 8620 tana samun amana ba ta hanyar ƙasidu ba, amma ta hanyar maimaitawa: bayanin taurin kai a cikin raka'a 500, rayuwar gajiya iri ɗaya tsawon shekaru samarwa uku, kwanciyar hankali iri ɗaya bayan zagayowar thermal 10,000. Wannan shine ma'aunin fasaha na QINGDAO QIANGSENYUAN ya hadu-ba lokaci-lokaci ba, amma bisa tsari. Domin a cikin ainihin kayan aiki da aikace-aikacen mota, "kusa da isa" babu shi. Daidai ne kawai.
