Pamene mainjiniya afotokoza silicon mold kuponyera fakitale mautumiki a zigawo zazitsulo zodalirika kwambiri, sikuti amangoyitanitsa zigawo-zimakhala zokhazikika pansi pa 300 MPa hydraulic loads, microstructure kupitiriza pambuyo pa chithandizo cha kutentha, ndi kukhulupirika kwa pamwamba komwe kumapulumuka slurry abrasive mu mapampu a mafuta. Izi ndiye zenizeni zomwe zimagwira ntchito bwino masiku ano - osati kulolerana mongoyerekeza, koma magwiridwe antchito.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. imagwira ntchito imodzi mwazinthu zochepa zopangira ku China komwe kuponyera nkhungu ya silicon (njira yapadera yopangira ndalama pogwiritsa ntchito zipolopolo za ceramic zochokera ku silica) zimagwiritsidwa ntchito mwadongosolo ku ma aloyi a cobalt-nickel monga AMS 5387 ndi T800. Taponyera ma valavu opitilira 12,000 owongolera ma hydraulic control unit kuyambira 2021-iliyonse imafuna ± 0.05 mm yovuta kwambiri, porosity yamkati mwa ASTM E192, komanso kutsatiridwa kwathunthu kuchokera pa aloyi yaiwisi mpaka lipoti lomaliza la CMM. Mlingo woterewu suchitika mwangozi. Zimachitika pamene kuponya sikuli kosiyana ndi makina, chithandizo cha kutentha, kapena kutsimikizira kwa GD&T-ndipo gulu lililonse likayamba ndi ziphaso zovomerezeka, osati zotsimikizira za ogulitsa.
Zosankha zitatu zaukadaulo zimalekanitsa kuyika kwa silicon mold kuchokera ku zovomerezeka - ndipo izi zimatanthauzira zomwe makasitomala amayesa pamayesero am'munda:
- Kuwongolera kamangidwe ka zipolopolo: Standard silika sol binders amathyola pamwamba pa 1,100 ° C panthawi ya kutsanulira kwa cobalt alloy. QINGDAO QIANGSENYUAN imagwiritsa ntchito makina osinthika a silika + ophatikizika a silica aggregate system yomwe idavotera 1,280 ° C - yotsimikiziridwa ndi kusanthula kwamphamvu kwamphamvu pazigoba zilizonse. Izi zimachotsa mikwingwirima yaing'ono yomwe pambuyo pake imawonekera ngati zosokoneza zoyambitsa kutopa m'mapampu a silinda.
- Directional solidification management: Panyumba za silinda ya pampu ya pisitoni yokhala ndi makhoma a 42 mm, timawongolera zoponya pa 17° kuchokera ku ng'anjo yowongoka ndikugwiritsa ntchito mbale zoziziritsa kukhosi pazigawo zokhuthala. X-ray tomography imatsimikizira kuyendayenda kwambewu komwe kumayenderana ndi ma vectors opsinjika-ofunikira kwa magawo a AMS 5387 omwe amagwira ntchito pa 450 ° C.
- Post-cast dimensional envelopu locking: Mosiyana ndi kuponya mchenga, silicon mold castings imakhala ndi miyeso yolimba ngati-cast-koma pokhapokha ngati malipiro a makina apangidwa kuti apangidwe, osati kungoganizira. Gulu lathu limamanga masheya a 0.3-0.5 mm pamalo osindikizira ovuta kwambiri, kenako ndikutsimikizira kupotoza kwapambuyo-machining ndi kulumikizana kwa laser tracker pazigawo zokhazikika. Makasitomala akuwonetsa 40% kuchepera kwa nkhani yoyamba pama roller a winch center shaft chifukwa cha izi.
Ena anganene kuti makina a CNC okha amapereka zolondola kuposa kuponyera. Koma izi zimaphonya fiziki: kupanga chotchinga cha 120 kg T800 alloy block mu 22 kg pampu maziko kumawononga 82% yamtengo wapatali - ndikubweretsa kupsinjika kotsalira komwe kumasokoneza moyo wotopa pakukweza kwa cyclic. Kujambula kwa silicon mold kumayambira pafupi ndi ukonde. Kenako malo athu ophatikizika a 5-axis mphero amachotsa zomwe zimangofunika—kusunga mbewu, kuchotsa masitepe ochepetsa kupsinjika, ndikudula nthawi yotsogolera pofika masabata 3.7 motsutsana ndi njira zina zomangika bwino. OEM yaku North America inasintha chingwe chake cha aloyi cha cobalt kupita ku njira yosakanizidwa iyi ndikuchepetsa mtengo wagawo ndi 29% ndikukulitsa moyo wautumiki kuchoka pa maola 8,200 mpaka 14,600.
Zomwe makasitomala amafunsa nthawi zonse - komanso zomwe timayankha tisanatchule - ndimomwe mungapewere njira zitatu zolephereka kwambiri pamapangidwe apamwamba a alloy silicon mold:
- Microshrinkage m'magulu: Amathetsedwa ndi matenthedwe opangira ma geting system ndi kuyang'anira kutentha kwa nthawi yeniyeni kusungunuka (± 1.5 ° C) panthawi yothira-palibe kuchotserapo.
- Kusakhazikika kwapamtunda: Imayankhulidwa kudzera muzozungulira zodziwikiratu za zipolopolo zomwe zimasinthidwa kukhala mamasukidwe akayendedwe, pH, ndi kagawidwe ka tinthu tating'ono-osati kumva kwa woyendetsa.
- Dimensional kuyenda kudutsa magulu: Kutetezedwa ndikusunga machitidwe apamwamba pazida zokhazikika za Invar ndikutsimikizira geometry yamkati ya chipolopolo chilichonse ndi optical profilometry pre-assembly.
Sitikuwona kuponya ngati njira yokhayokha. Ntchito iliyonse yopangira nkhungu ya silicon imayang'aniridwa ndi uinjiniya nthawi imodzi: Kodi gawolo la geometry limakonzedwa kuti likhale lolimba? Kodi kuzunguliridwa kwa kutentha kwa AMS 5387 kumafanana ndi kukula kwa tirigu wokhazikika? Kodi kumaliza kofunikira kwa Ra 0.4 μm kungatheke popanda kugaya kwachiwiri komwe kungayambitse kuwonongeka kwapansi? Izi siziri mndandanda wazinthu. Ndi zokambirana - zolembedwa, zamasiku, komanso zolumikizidwa ku dongosolo la ntchito.
Kuyang'ana m'tsogolo, chopinga chenicheni si mphamvu-ndi kuzama kwa ziphaso. Chaka chamawa, QINGDAO QIANGSENYUAN ikukulitsa kuchuluka kwa ISO 13485 kuti iphimbe zigawo za mayeso a mafupa a cobalt-chromium, ndikuyamba kutsimikizira gulu lachitatu la njira yake ya silicon mold motsutsana ndi NADCAP AC7118 Rev. D popanga zakuthambo. Chifukwa chiyani? Chifukwa ogwiritsa ntchito mapeto savomerezanso "zinagwira ntchito nthawi yatha." Amafuna kubwerezabwereza zolembedwa - pazida zonse, ma geometries, ndi machitidwe opanga. Pamene wanu silicon mold kuponyera fakitale imatha kubweretsa magawo a pampu a AMS 5387 okhala ndi zitsulo zonse zowoneka bwino, zotsimikizika za CMM, ndi malipoti osatsata ziro pa miyezi 18 yotsatizana, mumasiya kukhala wogulitsa. Inu mumakhala maziko.
