Simintin gyare-gyare na ƙarfe yana ba da daidaitattun maimaitawa inda yashi simintin gyare-gyare-musamman ga sassa kamar bawul ɗin matsa lamba na ruwa, fistan famfo na silinda gidaje, da nozzles na cobalt-alloy waɗanda ke buƙatar juriya mai ƙarfi, daidaitaccen microstructure, da sifili mai ɗimbin ɗimbin yawa a cikin batches. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Mun gudu a kan 12,000 karfe mold simintin hawan keke tun 2018-ba a matsayin ka'idar motsa jiki, amma don warware real kasawa: warping a cikin T800 gami famfo tushe, porosity a AMS 5387 a cikin AMS 5387 famfo famfo, porosity a AMS 5387 a lokacin zafi shaft jikin, da jiyya. Kowace gazawar ta koya mana abin da litattafan suka ƙetare: sarrafa zafin jiki ya fi dacewa da tsafta; Zane na gating yana ba da shawarar rayuwar gajiya fiye da ƙarfin ɗaure; da daidaito kafin zafi yana hana 73% na guntun farko a cikin simintin gyare-gyaren nickel.
Me yasa Simintin Ƙarfe na Ƙarfe Ya Yi Nasara Lokacin da Ba a Tattaunawa Ba Daidaitawa ba
Yin simintin yashi yana aiki don ƙananan ƙaranci, ƙananan juzu'i. Amma lokacin da kayan aikinku dole ne su riƙe ± 0.05 mm akan diamita na silinda 320 mm - ko tsira 15,000 psi pulsation a cikin taron famfo mai filin mai - simintin gyare-gyaren ƙarfe ya zama hanya ɗaya tilo. Tsayayyen ƙarfensa ko simintin ƙarfe na ƙarfe yana tsayayya da faɗaɗa yanayin zafi, sadar da ƙimar sanyaya iri ɗaya, kuma yana kawar da bambance-bambancen da ke cikin yashi mai ɗaure. Muna auna wannan yau da kullun: simintin ƙarfe na mu yana nuna 42% ƙarancin raguwa fiye da daidaitattun yashi-simintin jefa kuri'a, kuma tushen famfon bakin karfe ɗinmu sun cimma Cpk ≥1.67 akan kiran GD&T mai mahimmanci-ba tare da injinan sakandare ba.
Sakamakon ba kawai girma ba ne. Ƙarfe gyare-gyaren yana ba da damar ƙarfafa kwatance. Muna karkatar da gyare-gyare a tsaye don gidajen piston, muna tilasta karfen ciyarwa zuwa sama daga masu hawan kasa. Wannan yana kawar da porosity na tsakiya a cikin sassa masu kauri-matsayin gazawa na yau da kullun a cikin kwatankwacin simintin yashi. Don allunan cobalt-nickel kamar AMS 5387, wannan canji guda ɗaya ya rage ɓoyayyen ɓoyayyiyar ciki da kashi 91% a cikin binciken NDT na ɓangare na uku. Babu shafi, babu ɗaure, ba zato-kawai kimiyyar lissafi, sarrafawa.
Inda Ya Kasa—da Yadda Ake Gujewa Matsalolin
Wasu suna jayayya cewa simintin gyare-gyaren ƙarfe ba shi da sauƙi don gudu mai ƙarancin girma. Sun yi daidai-idan kun bi da shi kamar simintin yashi. Amma sassauci yana zuwa daga ƙirar tsari, ba kayan ƙira ba. Mun isar da samfura masu aiki a cikin kwanaki 11 ta amfani da gyare-gyaren ƙarfe mai saurin kayan aiki don nozzles gami da T800. Dabarar? Abubuwan da aka ƙera ƙwanƙwasa da aka ƙera daga ƙarfe kayan aiki na H13, an riga an ɗaure su zuwa 48 HRC, tare da haɗaɗɗen tashar jiragen ruwa na thermocouple don saka idanu na rami na ainihin lokaci. Wannan bayanan yana ciyarwa kai tsaye cikin simintin ɗinmu mai ƙarfi-don haka na biyun ya yi daidai da na farko, har ma a raka'a 50.
Ainihin tarkon farashi ba kayan aiki bane - yana yin watsi da hulɗar ƙarfe. Mun taɓa karɓar zane mai ƙayyadaddun "ASTM A487 Grade CA6NM bakin karfe" don tushen famfo na karkashin teku. Takaitaccen bayanin yayi daidai. Kisa bai kasance ba: sanyin sanyi mara sarrafawa ya haifar da hazo lokacin sigma tare da iyakokin hatsi. Yawan amfanin ƙasa ya ragu zuwa 38%. Magani? Mun canza zuwa iskar da ke kashewa a cikin kogon mold, sa'an nan kuma ƙara da 1050°C bayani anneal tare da ruwa quench. Yawan amfanin gona ya tashi zuwa 94%. Darasi: Simintin gyaran ƙarfe na ƙarfe baya maye gurbin horon ƙarfe-yana haɓaka sakamakonsa.
Yadda QINGDAO QIANGSENYUAN ke Haɗa Casting Tare da Ƙwararren Ƙwararru na Duniya
Ba mu raba simintin gyare-gyare daga aiki. Injiniyoyin mu suna duba kowane firam na GD&T-ba don ƙirƙira kaɗai ba, amma don hanyoyin ɗaukar nauyin sabis. Jikin bawul ɗin matsa lamba ba sifa ba ne kawai; magudanar damuwa ce. Don haka mun shigar da ma'auni a cikin ƙirar ƙira don yin taswirar zafin jiki yayin ƙarfafawa. Wannan bayanan yana gaya mana inda saura danniya zai maida hankali-da kuma inda za a ƙara taimakon injina na gida ko zagaye-zagayowar damuwa.
- Cobalt-alloy nozzles: Sanya a cikin gyaffan H13 da aka rigaya a 550°C, sannan a sanyaya iska don guje wa samuwar tsaka-tsakin tsaka-tsaki.
- Injiniyan cimin kayan aikin injiniya: Sand-molded cores inserted into metal molds for hybrid geometry control—rigid outer shell, complex internal spline cavity
- Gidajen Hydraulic Silinda: Machined kai tsaye daga matsayin-simintin jihar ta amfani da cikin-gidan 5-axis CNC-babu sake gyarawa, babu datum motsi.
Wannan haɗin kai yana yanke lokacin jagora da kashi 30 cikin 100 tare da simintin gyare-gyare + masu samar da injina. Mafi mahimmanci, yana ba da garantin ganowa: kowane kuri'a yana ɗaukar cikakken tarihin zafi, nazarin sinadarai, da rahoton binciken CMM-wanda ke da alaƙa da takaddun shaida daga masana'anta da aka yarda.
Zaɓar Abokin Hulɗarku—Bayan Ƙasidar
Tambayi kowane mai siyarwa game da iyawar simintin ƙarfen su. Sa'an nan kuma tambayi masu biyo baya guda uku: Menene mafi tsawo-gudu don AMS 5387? Ta yaya kuke tabbatar da zafin jiki kafin kowace zuba? Shin za ku iya raba rahoton FAI na baya-bayan nan yana nuna simintin simintin gyare-gyare da juzu'i na ƙarshe akan wani sashi tare da ≥5 mahimman abubuwan GD&T?
A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Amsoshinmu suna da iya aunawa: 8,200 yana zuba a kan bututun ƙarfe na T800 guda ɗaya; Infrared pyrometer inganci a maki 3 a kowane rami, shiga ta atomatik; da rahotannin FAI suna nuna matsakaicin 0.012 mm akan ɗigon ruwa mai lamba 12 don tushen famfo 280 mm. Mu buga wadannan ba a matsayin marketing-amma saboda karfe mold jefa nasara rayuwa a cikin lambobi, ba alkawuran.
Don aikace-aikacen da gazawar ke nufin raguwar lokaci, haɗarin aminci, ko rashin bin ka'ida-karfe mold simintin gyaran kafa ba zaɓi ba ne. Yana da tushe. Kuma madaidaicin abokin tarayya yana bambanta tsakanin daidaitattun maimaitawa da sake yin aiki mai tsada.
