Akatswiri akamanena za silika sol kuponya kwazitsulo mwatsatanetsatane, iwo samangosankha njira-akusankha chitsimikiziro cha kukhazikika kwa mawonekedwe, kukhulupirika pamwamba, ndi kusasinthika kwazitsulo pansi pamikhalidwe yovuta kwambiri. Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., taponya manambala apadera opitilira 12,000 pogwiritsa ntchito silica sol-zambiri mu aloyi ya faifi ya cobalt monga AMS 5387 ndi T800-pomwe kulekerera kwa ± 0.05 mm sikuli chandamale; ndiye maziko.
Chifukwa chiyani silica sol—osati galasi lamadzi kapena pulasitala—imapereka mwatsatanetsatane
Ogula ambiri amaganiza kuti "kuponya ndalama" ndi njira imodzi. Si. Binder system imatanthauzira malire a magwiridwe antchito. Silica sol imagwiritsa ntchito silika ya colloidal (SiO₂ nanoparticles yoyimitsidwa m'madzi) ngati chomangira choyambirira. Kukhuthala kwake kochepa kumadutsa mwatsatanetsatane; refractoriness ake mkulu kupirira 1,550 ° C kutsanulira kutentha kwa superalloys. Makina agalasi amadzi amasweka chifukwa cha kutenthedwa kwa kutentha. Zoumba zapulasitiki zimawonongeka pamwamba pa 600 ° C-kuwononga microstructure mu nyumba zapampu za cobalt.
Tawona makasitomala akusintha kuchoka pagalasi lamadzi kupita ku silica sol pambuyo poti magulu atatu otsatizana alephera kuyesa kuthamanga kwa 420 bar. Choyambitsa? Ma Microcracks mu khoma la chipolopolo, osawoneka bwino koma otsimikiziridwa ndi SEM fractography. Zipolopolo za silika sol siziwonetsa zolakwika zotere - ngakhale pamavane okhuthala a 0.3 mm pamisonkhano ya turbine nozzle. Ichi ndichifukwa chake fakitale yathu yopangira chuma cha silika imakhala ndi chiphaso cha ISO 9001:2015 chokhazikika mpaka kutentha, kugawa kwa tinthu tating'onoting'ono, komanso kuwongolera mame pakuyanika.
Kuphatikizika koyima sikutsatsa — ndimomwe timagwirira ± 0.03 mm pa nyumba za silinda za 300-mm
Otsatsa ena amatulutsa zipolopolo, kupanga, ndi makina. Timachita zonse zitatu pamalo amodzi ogwirizana ndi ISO ku Qingdao. N’chifukwa chiyani zimenezi zili zofunika? Chifukwa nyumba ya silinda ya pampu ya pistoni imafuna kufananiza kukula kwamafuta pakati pa chipolopolo, aloyi, ndi mawonekedwe a CNC. Pamene kuponyera ndi kupanga makina kukuchitika pansi pa denga limodzi, timayesa ma probe a CMM motsutsana ndi malo omwe ali ngati datum - osati zitsanzo za CAD. Timayesa ma shrinkage vectors pa batch ya alloy, kenaka timasintha njira za zida musanadulire.
Mwachitsanzo: AMS 5387 cobalt alloy amachepa ndi 1.82% motsatana mu nkhungu za silika—koma kokha pamene mame amakhala pansi -25°C poumitsa komaliza. Timalemba nthawi iliyonse yowumitsa. Ngati chinyezi chikuwonjezeka, timayikanso chipolopolocho. Palibe kuchotserapo. Kulangidwa kumeneku kumatipangitsa kukhala ndi ma callout a GD&T ngati malo ⊕ 0.05 mm MMC pamabowo asanu ndi atatu omwe ali ndi mipata yofanana-popanda kugaya kachiwiri.
Kutsimikizika kwapadziko lonse lapansi - osati zolemba za labu - kumayendetsa kusankha kwazinthu ndi ndondomeko
Makasitomala amafunsa kuti: "Kodi mutha kuponyera aloyi ya T800 mu chogudubuza chapakati cha shaft chosakhazikika?" Inde, koma pokhapokha ngati titsimikizira kamangidwe kake kaye. T800 imalimba ndi tsankho lalikulu la dendritic. Chipata chosayikidwa bwino chimayambitsa porosity yapakati pa phewa la 75-mm. Timayendetsa kayeseleledwe ka solidification (pogwiritsa ntchito MAGMASOFT®), kenako ndikutsimikizira ndi X-ray CT scans pamayesero atatu. Pokhapokha timavomereza chitsanzo.
Apa ndi pamene zochitika zimalekanitsa chiphunzitso ndi kutumiza. Taponyera ma nozzles a aloyi a cobalt pamapampu a jakisoni a subsea omwe amagwira ntchito pa 120 ° C ndi 350 bar. Kulephera kumatanthauza $2M kutsika. Chifukwa chake timayesa gulu lililonse: mphamvu zamakokedwe ≥1,050 MPa, elongation ≥8%, ndi intergranular dzimbiri kukana pa ASTM G28A. Palibe satifiketi popanda data yoyeserera. Palibe kutumiza popanda lipoti losaina loyendera.
Zomwe mungayembekezere mukamayanjana ndi fakitale yopangira ndalama za silica sol
Ngati gawo lanu lili ndi makoma owonda (<2 mm), ndime zovuta zamkati, kapena zimafuna Rz ≤ 1.6 µm as-cast surface finish — mufunika silica sol. Koma kupambana kumadalira mgwirizano, osati luso lokha. Ku QINGDAO QIANGSENYUAN, kuunikanso kwa uinjiniya kumayamba tisanatchule mawu: timayika milingo yolembera pansi pa 0.5 °, timawonetsa ma radii kuti muchepetse kupsinjika, ndikutsimikizira ngati chinthucho chikhoza kuponyedwa kapena kusinthidwa pambuyo pothira.
Sitigulitsa ma castings. Timapereka zinthu zomwe zimagwira ntchito: ma valve opanikizika omwe amamatira pa bar 450, maziko a pampu omwe amachepetsa kugwedezeka kwa 3,200 rpm, zodzigudubuza za winch shaft zomwe zimapulumuka maulendo 10⁶ mumpweya wodzaza mchere. Dongosolo lililonse limaphatikizapo ma cert, malipoti a CMM, ndi zipika zochizira kutentha. Nthawi yotsogolera? Masabata 14 a nkhani yoyamba, masabata 8 obwereza - otsimikizika. Osalonjezedwa. Zotsimikizika.
Kuyang'ana m'tsogolo, fakitale yathu yopangira ndalama za silica sol ikukulitsa njira yake yosakanizidwa-kuphatikiza kuwulutsa kwa mawonekedwe apafupi ndi ma axis ambiri munjira imodzi. Izi zimachotsa zolakwika zokonzanso ndikudula nthawi yonse yozungulira ndi 37% pazigawo monga ma hydraulic manifold blocks. Kulondola sikukhazikika. Ifenso sitiri.
