Lokacin da injiniyoyi suka ƙididdige simintin ƙarfe don manifolds na na'ura mai ba da hanya tsakanin hanyoyin sadarwa, famfo gidaje, ko na'urorin na'ura na winch, ba kawai siyan ƙarfe ba ne - suna siyan kwanciyar hankali a ƙarƙashin matsa lamba 300, daidaiton microstructural a cikin batches 500, da rashin haƙuri ga porosity a cikin yankuna masu ɗaukar kaya. Don haka"al'ada baƙin ƙarfe simintin factory” ba nau’in mai siyarwa ba ne—kofin aiki ne.
Mun ga ayyuka da yawa sun jinkirta ta hanyar gano abubuwan da ke ɗaukar simintin ƙarfe a matsayin aikin kayayyaki: ƙididdige ƙididdiga na nodule na graphite ba a kula da su, ba da izinin raguwar da aka tsinta daga zane-zane na gado, jadawalin jiyya na zafi da ake amfani da su gabaɗaya. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., kowane simintin ƙarfe yana farawa da niyya ta ƙarfe-ba kawai ciko mold ba. Wurin mu na yarda da ISO a cikin Qingdao yana gudanar da ayyukan simintin yashi wanda aka daidaita don ASTM A48 Class 35, A536 ductile iron, da gaurayawan ferritic-lu'u-lu'u na al'ada-kowane wanda aka zaɓa don dacewa da bayanan bayanan danniya na aiki, ba kawai sigogin ƙarfin ƙarfi ba.
Bukatar duniyar gaske tana tsara tsarin tsarin mu. Don gidaje na silinda famfo piston, muna sarrafa ƙimar sanyaya a cikin ± 2 ° C a cikin kogon ƙura don hana murdiya a cikin jeri. Don injinan abin hawa winch center shaft rollers, muna tabbatar da ilimin halittar hoto ta hanyar SEM kafin machining-saboda rarraba flake kai tsaye yana shafar rayuwar gajiya kai tsaye a tazarar zagaye na 12,000. Kuma lokacin da abokan ciniki suka aika GD&T callouts kamar ⌀0.015 mm matsayi haƙuri a kan 8 × Ø22 mm hawa bores, Ba kawai muna aunawa ba - muna yin simintin haɓaka haɓakar thermal yayin machining, sannan daidaita kayan aikin kayan aiki a ainihin lokacin ta amfani da binciken Renishaw QC20-W. Wannan shine yadda muke riƙe matsayi na gaskiya a cikin 0.008 mm akan yawan samarwa.
Haɗin kai tsaye yana sa wannan ya yiwu-kuma ya zama dole. Yin simintin gyare-gyare, injina na CNC, da ƙarewar saman suna faruwa a ƙarƙashin rufin ɗaya. Babu ɓangarorin hannu da ke nufin babu juzu'i mai girma tsakanin ɓarkewar simintin gyare-gyare da ƙarewar ƙarshe. Muna yin injina kai tsaye daga saman simintin simintin gyare-gyare inda za a iya yiwuwa, tare da kawar da kurakuran sake gyarawa. Maganin zafi yana biye da yin simintin gyare-gyare ba tare da jinkirin canja wurin kayan ba-mahimmanci don cimma taurin Brinell iri ɗaya (220-260 HBW) a cikin sassan ɓangaren kauri. Kuma saboda mun samo ƙwararrun albarkatun ƙasa—wanda ake iya ganowa zuwa rahotannin gwajin niƙa—mun san ainihin abun ciki na sulfur na kowane tsari kafin zuba. Sulfur sama da 0.025%? An ƙi. Ba saboda ya keta ƙayyadaddun bayanai ba - amma saboda yana haɗarin ƙananan raguwa a cikin mahaɗa tsakanin sassan bakin ciki da kauri.
Babban bambance-bambancenmu ba kayan aiki ba ne - ƙwarewar aikace-aikace ne. Lokacin da wani ma'aikacin fasinja na Arewacin Amurka ya buƙaci AMS 5387 cobalt alloy famfo sassa da aka sake tsara su zuwa cikin baƙin ƙarfe mai ƙima don ƙimar farashi, ba mu canza kayan kawai ba. Mun tsara kekuna na thermal a cikin ANSYS, gyare-gyaren wakilai na nodularization don riƙe tsayin 18% a -20°C, da ingantacciyar juriya ta sawa a kan API RP 14E lallausan yazawa. Sakamakon: 40% ƙananan farashin naúrar, gazawar filin sifili sama da watanni 18. Wannan shine bambanci tsakanin simintin ƙarfe da halayen ƙarfe na injiniya.
Idan kuna kimantawa a al'ada baƙin ƙarfe simintin factory, Yi tambayoyi uku: Shin za su iya nuna muku rahoton CMM na baya-bayan nan don wani sashi mai ≥5 m datums? Shin suna riƙe da cikakkun abubuwan gano abubuwa - gami da rajistan ayyukan sinadarai - ga kowane oda? Kuma ƙungiyar injiniyan su za ta ba da alamar rikicin GD&T * kafin * ambato-ba bayan binciken labarin farko ba? FASSARAR QINGDAO QIANGSENYUAN ta amsa e—kowace lokaci. Domin ba a isar da aminci a cikin akwati na jigilar kaya. An gina shi a cikin kowane zube, kowane yanayin zafi, kowane micrometer na injin sarrafawa.
