Lokacin da injiniyoyi suka bayyana a simintin gyaran kafa sassa factory don mahimmin bawul ɗin hydraulic mai mahimmanci ko manyan shafukan winch, ba kawai siyan ƙarfe ba ne - suna siyan kwanciyar hankali a ƙarƙashin matsa lamba 350, amincin microstructure bayan magani mai zafi, da cikakken yanayin ganowa har zuwa lambar narkewa. Abin da ya sa ƙungiyoyin ƙira a Arewacin Amurka da Turai ke ƙara bin hadaddun kayan aikin famfo na cobalt-alloy zuwa Qingdao-ba don farashi mai rahusa ba, amma don halayen ƙarfe da ake iya faɗi da kuma isar da ban mamaki.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki inda haƙurin simintin gyare-gyare ya haɗu da aikin aiki: ± 0.05 mm akan gidajen piston famfo Silinda, Amincewar AMS 5387 da aka tabbatar ta ASTM E112 girman ƙwayar hatsi, kuma saman ya ƙare zuwa Ra 0.8 µm akan fuskokin rufewar cobalt-nozzle. Mun ga abokan ciniki sun canza masu kaya bayan faci uku na T800 gami da matosai-kowane lokaci, tushen tushen yana haifar da rarrabuwar carbide mara daidaituwa yayin ƙarfafawa. Qiangsenyuan ya guje wa wannan ta hanyar sarrafa duka yuwuwar ƙera yashi *da* simintin simintin gyaran gyare-gyaren da aka yi a cikin gida. Babu hannun hannu. Babu zato.
Haɗin kansu na tsaye ba yaren tallace-tallace ba ne - larura ce ta tsari. Ɗauki abin abin hawa na injiniyoyi na cibiyar shaft: jefa a cikin ductile iron (ASTM A), mai ƙarfi-machining akan 5-axis DMG Mori, zafi-magana zuwa 28-32 HRC, sa'an nan gama-ƙasa tare da in-CMM amsa. Kowane mataki yana tsayawa a ƙarƙashin rufin daya. Wannan yana kawar da juzu'i na gama gari lokacin da ake jigilar shagunan simintin gyare-gyare zuwa shagunan injuna na waje-musamman ma lokacin ɗaukar mujallolin yana buƙatar gudu a ƙarƙashin 0.015 mm. Abokan ciniki suna ba da rahoton ƙarancin kin amincewa da labarin farko da kashi 40 cikin ɗari fiye da ƙirar ƙira na matakin farko.
Horon kayan aiki ba za a iya sasantawa ba a nan. Raw cobalt-nickel ingots sun zo tare da rahotannin gwajin niƙa da ke nuna carbon ≤0.12%, chromium 27–31%, da cobalt ≥60%—an tabbatar kafin narkewa. Lokacin da OEM famfo na Turai ya buƙaci ƙarin iko akan abun ciki na delta ferrite a cikin simintin bakin karfe, Qiangsenyuan ba kawai daidaita ilimin sunadarai ba; sun shigar da na'urar sikeli ta PMI na hannu a tashar zubewar kuma sun shigar da duk wani abun da aka zuba a kan masu sanyaya. Wannan matakin na granular iko ya bayyana dalilin da ya sa su AMS 5387 aka gyara akai-akai wuce NDT Level III ultrasonic dubawa-ba sake yin aiki, babu guntu.
Isar da saƙon duniya na ainihi ya dogara ne akan daidaita aikin injiniya-ba kawai ƙarfin samarwa ba. Yayin bita na GD&T na zanen mahalli na matsa lamba, ƙungiyarsu ta nuna haƙurin bayanin martaba na 0.02 mm akan fuskar flange mara aiki. "Za mu iya riƙe shi," in ji su, "amma yana ƙara 17% lokacin injina da fa'idar aikin sifili." Sun ba da shawarar sassauta shi zuwa 0.1 mm, sun tabbatar da canjin tare da taswirar rarraba damuwa na FEA, da raba simintin faɗaɗa zafi da ke nuna rashin tasiri kan amincin hatimi. Irin wannan matsalar warware matsalar haɗin gwiwa - tushen kimiyyar lissafi, ba alkawuran tallace-tallace ba - shine abin da ke juya odar kashe-kashe zuwa haɗin gwiwar shekaru da yawa. Don ƙungiyoyin da ke buƙatar ingantattun hanyoyin simintin ƙarfe na ƙarfe waɗanda ke aiki kamar yadda aka annabta, ba kamar yadda ake fata ba, hanyar tana farawa da nazari na fasaha-ba buƙatun ƙira ba.
