Lokacin da injiniyoyi suka ƙididdige simintin ƙarfe mai launin toka don manyan bawuloli na hydraulic ko famfo gidaje, ba kawai zaɓin kayan aiki bane—suna yin fare akan kwanciyar hankali a ƙarƙashin hawan keken zafi, daidaitaccen rarrabuwar faifan graphite a cikin ɗigon zafi, da amincin saman bayan machining. Shi ya sa zabar dama Kamfanin simintin gyaran ƙarfe mai launin toka ba game da ƙasidu ko takaddun shaida kaɗai ba. Yana da game da tabbataccen hali a cikin samarwa na duniya: yadda ma'adanin ke sarrafa zub da yanayin zafin jiki yayin tafiyar awanni 72, ko takaddun bayanan bayanan yashi na yashi suna iya ganowa ga kowane simintin jefa kuri'a, kuma idan shagon CNC ɗin na iya ɗaukar ± 0.015 mm akan 320 mm 320 mm - * bayan * taimako na damuwa.
Mun ga ayyuka da yawa sun tsaya cak saboda mai siyarwa ya ɗauki baƙin ƙarfe mai launin toka a matsayin "jifa baƙin ƙarfe kawai" - yin watsi da yadda ƙananan bambance-bambancen daidaitattun carbon (CE), ƙimar sanyaya, ko lokacin girgiza kai tsaye yana tasiri injin injin silinda ko ɗigo-hanyoyin rufe saman. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., baƙin ƙarfe launin toka ba kayayyaki bane. Tsarin ƙarfe ne mai sarrafawa. QT450-10 da GG25 simintin gyare-gyaren suna yin nazari na gani * kafin * zubowa, tare da CE da aka gudanar tsakanin maki ± 0.08 a tsakanin batches. Kowane zafi yana ɗauke da cikakken abin ganowa: narke log, lambar ladle, ID na kogon mold, da tabbatarwa bayan zafin zafi na Brinell hardness—ba wai kawai takardar shedar da aka yiwa hatimi “daidai ba.”
Ƙarfin su ya ta'allaka ne a cikin haɗin kai tsaye - ba a matsayin kalma ba, amma azaman tsarin horo. Ginin famfo na piston yana farawa azaman yashi-simintin GG25 mara kyau, sannan ya matsa kai tsaye zuwa bene na CNC na ISO 9001 ba tare da wucewar kayan aiki ba. Babu abubuwan ban mamaki da suka sake kamawa. Babu kuskuren tsarin daidaitawa tsakanin simintin datum da na'urar injina. Suna injin mahimman fuskokin rufewa a saiti ɗaya, ta yin amfani da kayan aikin Renishaw da aka bincika don rama ƙarancin taurin gida. Wannan shine yadda suke isar da 0.4 µm Ra gamawa akan filayen kujerun bawul - ba tare da ƙwanƙwasa na biyu ba - kuma suna kula da 0.02 mm tazara tsakanin ɓarna da hawan flange a tsayin 120 mm. Abokan ciniki a Arewacin Amurka sun ba da rahoton 30% ƙarancin ɗigogin filayen akan wuraren maye gurbin famfo tare da masu samar da kayayyaki na baya-saboda ƙananan ƙirar simintin gyare-gyaren bai tilasta mashin ɗin da ya fallasa ƙarancin ƙasa ba.
Amma haɗin kai yana nufin kaɗan ba tare da zurfin fasaha ba a cikin halayen gami. Ba a keɓe baƙin ƙarfe mai launin toka a nan ba - an ƙera shi tare da tsarin cobalt-nickel. Lokacin da abokin ciniki yana buƙatar taron haɗaɗɗiyar-ce, tushen famfo na GG25 tare da AMS 5387 cobalt alloy bawul abubuwan sakawa - ƙungiya ɗaya tana ɗaukar duka biyun. Sun san T800's thermal expansion coefficients shine 37% ƙasa da baƙin ƙarfe mai launin toka, don haka suna tsara tsangwama da zagayowar zagayowar da ke hana fashewar fuska yayin sabis a 220°C. Wannan ƙwarewar ƙetaren abu yana da mahimmanci: yana hana gyare-gyare masu tsada lokacin da rashin daidaituwa na thermal ke haifar da gazawar gasket da bai kai ba ko lalacewa a mahadar. Mun kalli yadda suke daidaita tsarin halittar hoto ta hanyar inoculant lokaci don inganta damping a cikin winch center shaft rollers - rage watsawar girgiza da kashi 42% a cikin gwaje-gwajen filin akan titin motocin injiniya.
Menene ya raba su da masu sayar da kasida? Lokacin mayar da martani akan ra'ayoyin masana'anta. Aika zane mai nauyi na GD&T don jikin bawul ɗin matsa lamba, kuma zaku sami takaddun PDFs a cikin sa'o'i 48 - ba cikakkun bayanai ba kamar "haƙuri mai yuwuwa," amma takamaiman kira: "Datum C dole ne ya canza 0.3 mm zuwa gaɓoɓin ɓarna don guje wa tsoma bakin ƙafa," ko "Kayyade Rz maimakon Ra a nan yana inganta haɓakar hatimi." Ba a tsara ka'idojin ingancin su ba; yana da taswirar haɗari. Danyen abu mai shigowa yana samun bincike mai fitar da wuta *da* gwajin ultrasonic don raguwar ciki. Binciken cikin-tsari yana amfani da Zeiss CMMs tare da ƙirar yumbu mai ƙima-ba sandunan aluminium ba-don haka zafin zafi baya karkatar da sakamako a yanayin 20°C. Binciken ƙarshe ya haɗa da gwajin matsa lamba na aiki a matsa lamba na 1.5 ×, tare da tabbatar da rini-kumburi na duk fillet ɗin injin.
Idan odar simintin simintin ƙarfe na gaba na gaba yana buƙatar fiye da “ya dace kuma baya tsagewa,” nemi shaidar sarrafa tsarin da aka haɗa-ba kawai yarda ba. Nemo shagunan inda masana masana'antar ƙarfe ke bitar rahotannin rarraba hatsin yashi kafin yin ƙira, inda masu shirye-shiryen CNC ke daidaita ƙimar abinci dangane da taswirar taswirar kowane simintin, kuma inda kwanakin isar da saƙon ke ɗora wa rajistan ayyukan tanderu - ba alkawuran tallace-tallace ba. Wannan shine haƙiƙanin aiki da ke bayan ɓangarorin madaidaicin abin dogara. Don buƙatar aikace-aikace a cikin injinan ruwa, mai & gas, ko tsarin abin hawa masu nauyi, daidaiton ba na zaɓi bane. Bambanci ne tsakanin kulawa da aka tsara da kuma lokacin da ba a shirya ba.
