Lokacin da injiniyoyi suka bayyana silicon mold simintin gyaran kafa factory sabis don manyan abubuwan ƙarfe na ƙarfe, ba kawai yin odar sassa bane - suna tabbatar da kwanciyar hankali a ƙarƙashin nauyin hydraulic 300 MPa, ci gaban microstructure bayan jiyya na zafi, da amincin saman da ke tsira daga slurry a cikin famfunan mai. Wannan ita ce haƙiƙanin aiki a bayan yin simintin daidaitaccen yau-ba juriya na ƙa'idar kan zane ba, amma aikin aunawa a cikin sabis.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki da ɗaya daga cikin ƴan wuraren samarwa a China inda simintin gyare-gyaren simintin gyaran fuska (wani bambance-bambancen bambance-bambancen simintin saka hannun jari ta amfani da harsashin yumbu na tushen silica) ana amfani da shi cikin tsari zuwa gariyar cobalt-nickel kamar AMS 5387 da T800. Mun jefa sama da jikin bawul ɗin matsa lamba 12,000 don raka'o'in sarrafa ruwa na ruwa tun daga 2021-kowanne yana buƙatar ± 0.05 mm mai mahimmanci mai mahimmanci, ƙarancin ciki na ciki a kowane ASTM E192, da cikakken ganowa daga ɗan ƙaramin allo zuwa rahoton CMM na ƙarshe. Wannan matakin daidaito baya faruwa kwatsam. Yana faruwa lokacin da simintin gyare-gyare ba a keɓance daga injina, magani mai zafi, ko ingancin GD&T-kuma lokacin da kowane tsari ya fara da takaddun takaddun kayan, ba tabbacin mai bayarwa ba.
Hukunce-hukuncen fasaha guda uku sun raba simintin gyare-gyaren siliki mai aiki da simintin karɓuwa-kuma waɗannan suna bayyana ainihin abin da abokan ciniki ke gwadawa a gwajin filin:
- sarrafa abun da ke ciki Shell: Daidaitaccen silica sol binders yana fashe sama da 1,100C yayin zub da gwal. QINGDAO QIANGSENYUAN tana amfani da ingantaccen tsarin silica colloidal + fused silica aggregate tsarin wanda aka ƙididdige shi zuwa 1,280°C—wanda aka tabbatar ta hanyar nazarin yanayin zafin jiki akan kowane harsashi. Wannan yana kawar da microfissures wanda daga baya ya bayyana a matsayin gajiya-farawar farfajiya a cikin gidajen famfo na Silinda.
- Gudanar da ƙarfafawar kwatance: Domin piston famfo Silinda gidaje tare da 42 mm bango miƙa mulki, mu daidaita simintin gyaran kafa a 17 ° daga tsaye a cikin tanderun da kuma amfani da gida sanyi faranti a lokacin farin ciki sashe. Hoton hoto na X-ray yana tabbatar da kwararar hatsin kwatance daidai da abubuwan damuwa-mahimmanci ga sassan AMS 5387 da ke aiki a 450°C.
- Makullin ambulan da aka yi bayan simintin gyare-gyare: Ba kamar simintin yashi ba, simintin simintin gyare-gyaren simintin gyare-gyare suna riƙe da ma'aunin simintin simintin gyare-gyaren-amma kawai idan an ƙirƙiri izinin injina cikin ƙirar, ba zato ba. Ƙungiyarmu tana gina haja na 0.3-0.5 mm zuwa cikin mahimman abubuwan rufewa, sannan ta tabbatar da jujjuyawar injina tare da daidaitawar laser tracker akan sassan da aka ɗora. Abokan ciniki suna ba da rahoton ƙarancin kin amincewa da labarin farko na kashi 40% akan abin nadi na shaft na cibiyar winch saboda wannan.
Wasu na iya jayayya cewa injinan CNC kadai yana ba da daidaito mafi kyau fiye da simintin gyare-gyare. Amma wannan ya rasa ilimin kimiyyar lissafi: yin amfani da shinge mai nauyin kilogiram 120 T800 a cikin ginin famfo mai nauyin kilogiram 22 yana lalata 82% na farashin kayan - kuma yana gabatar da damuwa mai saura wanda ke lalata rayuwar gajiya a cikin hawan keke. Simintin gyare-gyaren siliki yana farawa kusa da sifa. Sa'an nan haɗin gwiwar cibiyoyin niƙa 5-axis ɗinmu suna cire abin da ake buƙata kawai - adana tsarin hatsi, kawar da matakan kawar da damuwa, da yanke lokacin jagora ta makonni 3.7 tare da cikakken ingantattun hanyoyin. Ɗaya daga cikin OEM na Arewacin Amurka ya canza layin cobalt alloy bututun ƙarfe zuwa wannan tsari na matasan tare da rage farashin naúrar da kashi 29% yayin da yake tsawaita rayuwar sabis daga 8,200 zuwa 14,600 hours aiki.
Abin da abokan ciniki ke tambaya akai-akai-kuma abin da muke amsawa kafin faɗar-shine yadda za a guje wa nau'ikan gazawa guda uku a cikin simintin gyare-gyaren silicon mai ƙarfi:
- Microshrinkage a cikin haɗin gwiwa: An warware ta hanyar ƙirar ƙirar thermal na tsarin gating da saka idanu na yanayin zafi na ainihin lokacin (± 1.5 ° C) yayin zub - babu keɓancewa.
- Rashin daidaiton rashin daidaituwa na saman: An gabatar da shi ta hanyar zagayawa mai sarrafa harsashi wanda aka daidaita zuwa danko, pH, da girman rabon barbashi-ba ji mai aiki ba.
- Matsakaicin dimensional a cikin batches: An hana shi ta hanyar kiyaye ƙirar ƙira a cikin ingantattun kayan aikin Invar da tabbatar da kowane juzu'i na ciki tare da pre-profilometry na gani.
Ba ma ɗaukar simintin gyare-gyare a matsayin tsari kaɗai. Kowane aikin simintin gyare-gyaren siliki yana yin bitar aikin injiniya na lokaci guda: Shin an inganta sashin joometry don ƙarfafa jagoranci? Shin ƙayyadaddun yanayin yanayin zafi na AMS 5387 yayi daidai da ƙayyadadden girman hatsin simintin? Shin za a iya samun kammalawar Ra 0.4 μm da ake buƙata ba tare da niƙa na biyu ba wanda ke haifar da lalacewar ƙasa? Waɗannan ba jerin abubuwan dubawa ba ne. Tattaunawa ne - rubuce-rubuce, kwanan wata, da kuma haɗe zuwa tsarin aiki.
Duba gaba, ainihin ƙugiya ba ƙarfi ba ne - zurfin takaddun shaida ne. A shekara mai zuwa, QINGDAO QIANGSENYUAN yana faɗaɗa ikon ISO 13485 don rufe matakan gwajin cobalt-chromium orthopedic na likitanci, kuma ya fara tabbatarwa na ɓangare na uku na tsarin ƙirar silicon ɗin sa akan NADCAP AC7118 Rev. D don simintin sararin samaniya. Me yasa? Domin masu amfani na ƙarshe ba su yarda da "ya yi aiki na ƙarshe ba." Suna buƙatar daftarin aiki maimaituwa-dukkan kayan, geometries, da ayyukan samarwa. Lokacin ku silicon mold simintin gyaran kafa factory zai iya isar da sassan famfo na AMS 5387 tare da cikakken binciken ƙarfe, ƙwararrun sifofi masu mahimmanci na CMM, da rahotanni marasa daidaituwa sama da watanni 18 a jere, kun daina zama mai siyarwa. Ka zama tushen tushe.
