QT450-10 samar da masana'anta ba kawai takamaiman kayan aiki ba ne - alƙawarin aiki ne. Lokacin da jikin bawul ɗin hydraulic, ɗakunan famfo, ko ginshiƙan cibiyar winch dole ne su tsayayya da gajiya a ƙarƙashin ɗaukar nauyi yayin da suke riƙe da ƙarancin haƙuri na GD&T, QT450-10 ductile iron yana ba da ma'auni daidai: 450 MPa ƙarfin ƙarfin ƙarfi, 10% ƙaramar haɓakawa, da machinability na iya yiwuwa bayan annealing. Amma samar da simintin gyare-gyare na QT450-10 ba game da nemo * kowane * tushe ba. Yana da game da haɗin gwiwa tare da mai sayarwa wanda ke sarrafa ƙarfe daga ladle zuwa lathe-kuma a nan ne haɗin kai tsaye ya zama ba za'a iya sasantawa ba.
Me yasa QT450-10 Ya Bukaci Fiye da Daidaitaccen Simintin Ƙirar
Mun ga maki uku na gama gari a cikin ayyukan QT450-10: rashin daidaituwa na nodularity yana haifar da karaya da wuri a cikin sasanninta mai girma; saura danniya-induced murdiya a lokacin karshe CNC machining; da microcracks surface bayyana kawai bayan gwajin gwaji. Waɗannan ba ƙera "kuskure" ba ne. Alamun rarrabuwar kawuna ne-inda simintin gyare-gyare, magani mai zafi, da injina ke faruwa a tsakanin dillalai daban-daban tare da tagogin tsarin da bai dace ba.
Kayan aikin injiniya na QT450-10 sun rataya akan daidaitaccen kulawar maganin magnesium, lokacin inoculation, da ƙimar sanyaya a cikin ƙirar. Matsakaicin zafin jiki na 3 ° C na iya canza adadin nodule da 20%. Wannan shine dalilin da ya sa ƙwararrun abubuwan gano albarkatun ƙasa-ba a matsayin takarda ba, amma azaman hanyar haɗi kai tsaye zuwa rahotannin bincike na ladle da tarihin zafin rana. A wurin aikinmu na Qingdao, kowane rukunin QT450-10 yana ɗauke da cikakken sinadari (C: 3.4-3.8%, Si: 2.2–2.8%, Mg: 0.03–0.06%), sandunan gwajin ƙarfi da aka jefa tare da sassan samarwa, da taswirar tauri a fadin sassan kauri.
Wannan ba ka'idar ba ce. A bara, wani famfo OEM na Turai ya canza mana bayan masu samar da kayayyaki guda biyu sun kasa kwanciyar hankali a kan gidajen Silinda tare da sassan bangon 120 mm. Abokin sayar da su na asali ya yi amfani da ƙera yashi tare da daidaitattun abubuwan ɗaure yumbu-wanda ya haifar da sanyaya mara kyau da kuma ɗaurin lu'u-lu'u. Mun canza zuwa yashi mai ɗaure da resin tare da sarrafa iska mai sarrafawa kuma mun ƙara rage simintin danniya a 580°C na awa 4. Sakamakon: murdiya ya ragu daga ± 0.18 mm zuwa ± 0.06 mm-a cikin yankin su na haƙuri na CMM.
Abin da "Masana Kai tsaye" ke nufi ga masu siye QT450-10
Wasu masu samar da kayayyaki suna yiwa kansu lakabin "Masana'antar QT450-10" saboda sun mallaki katafaren gini. Wasu suna samun wannan lakabin saboda sun mallaki dukkan sarkar darajar - daga narkewar gami da simintin gyare-gyare ta hanyar niƙa-axis biyar, harbe-harbe, da gwajin leak ɗin helium. Bambancin yana nunawa a daidaitaccen lokacin jagora, saurin ƙira, da ƙudurin tushen tushen.
- Ɗauki-zuwa-machining handoff yana faruwa a cikin gini ɗaya: Babu jinkirin dabaru, babu lalacewa mai lalacewa, babu rashin fahimta game da nassoshi datum.
- GD&T an inganta shi kafin fara injina: Ƙungiyoyin awowi namu suna bincika sassan da aka jefa ta hanyar amfani da na'urori masu haske - kwatanta ainihin saman da CAD mara kyau don daidaita hanyoyin kayan aiki don bambancin hannun jari.
- An haɗa maganin zafi, ba fitarwa ba: Muna gudanar da ci gaba da layukan cirewa tare da bayanan martaba masu shirye-shirye / jiƙa / sanyi, ana kula da su ta ASTM E2862, tare da taswirar tanderun da aka adana don kowane kuri'a.
Wannan haɗin kai ya yanke samfurin juyawa daga makonni 12 zuwa 5. Don umarni na matsakaici (500-5,000 inji mai kwakwalwa / shekara), yana kawar da "kwangilar kayan aiki" wanda ke tilasta masu saye su riƙe kayan tsaro na watanni 6. Wani abokin ciniki na Arewacin Amurka ya rage farashin ɗaukar kaya da kashi 37% bayan ya canza zuwa ƙirar masana'anta ta QT450-10 kai tsaye.
Lokacin da QT450-10 bai isa ba - kuma abin da za a yi maimakon haka
Wasu injiniyoyi sun gaza zuwa QT450-10 don duk aikace-aikacen ƙarfe na ductile. Amma muna ba da shawara in ba haka ba lokacin da: yanayin aiki na aiki ya wuce 300 ° C (ruɓawar lu'u-lu'u yana haɓaka); juriya na lalacewa yana da mahimmanci (misali, tsagi na zoben piston); ko fallasa lalata ya haɗa da chlorides ko H₂S. A waɗannan lokuta, QT500-7 yana ba da ƙarfi mafi girma amma ƙananan ductility-ko cobalt alloy T800 yana ba da 3 × rayuwar lalacewa a 650 ° C.
Ga abin da muke yi a maimakon haka: gudanar da bambance-bambancen kayan yayin nazarin aikin injiniya. Idan sashin yana ganin> 200 MPa madaidaicin danniya, muna kwaikwayon rayuwar gajiya ta amfani da tsarin damuwa na gida a cikin nCode DesignLife. Idan taurin saman dole ne ya wuce 350 HB, muna ba da shawarar austempered ductile iron (ADI) maki kamar ASTM A897 Grade 2. Idan lissafi yana da ƙananan haƙarƙari (<8 mm) mai yuwuwa don raguwar porosity, muna canzawa zuwa simintin saka hannun jari-har ma don ƙarfe mai ductile—don tabbatar da inganci.
Wannan ba abin mamaki ba ne. Yana hana gazawar filin. Mun ƙi ƙima 17 QT450-10 a cikin watanni 18 da suka gabata saboda aikace-aikacen ya buƙaci wani abu dabam. Amincewa ta fara daga nan.
Zabar Abokin Hulɗar ku na QT450-10: Takaddun Takaddun Shawara guda uku
Kafin sanya hannu kan NDA, yi waɗannan tambayoyin—kuma ku nemi shaida:
- Za a iya nuna mani rahotannin binciken ladle uku na ƙarshe na QT450-10? Ba kawai takaddun shaida ba — fitattun bugu tare da tambarin lokaci, ID na ma'aikaci, da rajistan ayyukan ƙira.
- Kuna yin gwajin ultrasonic akan simintin gyare-gyare fiye da 50 mm? ASTM A609 Level 3 misali ne don matsi-mahimman abubuwan haɗin gwiwa. Idan sun ce "bisa buƙata kawai," tafiya.
- Menene mafi munin yanayin Cpk don ƙarfin ɗaure akan QT450-10 a cikin watanni 12 da suka gabata? Duk wani abu da ke ƙasa 1.33 yana nufin rashin zaman lafiya na ƙididdiga. Namu shine 1.68.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki da masana'anta QT450-10 da aka gina don mahimman sassa na manufa-ba simintin kayayyaki ba. Ba mu tara abubuwan da ba kowa ba. Muna samar da taro na aiki: bawul ɗin matsa lamba tare da haɗaɗɗun wuraren zama, tushen famfo tare da ramuka masu hawa da aka riga aka taɓa, winch shaft rollers tare da taurare hanyoyin tsere-duk daga simintin QT450-10 guda ɗaya. Wannan mayar da hankali yana ba mu damar tace hanyoyin wasu waɗanda ba a kula da su ba: sarrafa ilimin halittar ɗan adam ta hanyar inoculants na duniya da ba kasafai ba, faɗakarwa-taimakawa degassing don rage porosity na hydrogen, da tabbatar da nodularity a cikin tsari ta amfani da bincike mai sarrafa kansa.
Mataki na gaba baya neman zance. Yana aika zanen ku don amsawar ƙirƙira-ba tare da haɗe kirtani ba. Domin mafi kyawun tsarin samar da QT450-10 yana farawa kafin zub da farko.
