(Alumina CeramicZopangidwa ndiWintrustek)
Aluminandi dzina lodziwika bwino la aluminium oxide (Al2O3). Ndi ceramic yolimba yaukadaulo yokhala ndi kuphatikiza kwapadera kwamakina ndi mawonekedwe amagetsi. Ndizoyenera kugwiritsa ntchito mafakitale osiyanasiyana.
Ubwino Wachikulu:
Njira Yopangira: Kuchokera ku Ufa kupita ku Ceramic Yolimba
Kupanga wapamwamba kwambirialumina ceramic mankhwalakumakhudza kusintha kwa thupi ndi mankhwala:
Kukonzekera Ufa: Ufa wa aluminiyamu umasakanizidwa ndi zowonjezera (monga zithandizo za sintering).
Njira Yopangira: Kukanikiza kowuma, kukanikiza kwa isostatic, kuumba jekeseni, kapena kuponya tepi kumasankhidwa kutengera mawonekedwe ofunikira.
Sintering:Zinthuzo zimawotchedwa mu ng'anjo yotentha kwambiri pa 1600 ° C mpaka 1800 ° C, zomwe zimapangitsa kuti tinthu tating'ono tigwirizane ndi kristalo wandiweyani.
Kumaliza:Chifukwa cha kuuma kwake kwambiri, kumaliza pambuyo pa sintering nthawi zambiri kumafuna kugwiritsa ntchito zida za diamondi kapena mawilo opera.
Nkhaniyi ikuyang'ana kwambiri njira zingapo zopangira:
1. Dry Pressing
Iyi ndi njira yomwe imagwiritsidwa ntchito kwambiri popanga mafakitale, makamaka yoyenera kupanga zambiri zowoneka zosavuta (monga mapepala, mphete, ndi ma washer).
Mfundo:Ufa wokhala ndi chomangira umayikidwa mu nkhungu yachitsulo ndikukakamizidwa kutengera unidirectional kapena bidirectional pogwiritsa ntchito makina osindikizira.
Ubwino: Kugwira ntchito kosavuta, kuchita bwino kwambiri, kukula kwake kwa thupi lobiriwira, komanso kuchepa kwa sintering mosavuta.
Zolepheretsa:Zovuta kupanga zigawo zooneka ngati zovuta; chifukwa cha mikangano yamphamvu, kachulukidwe ka zigawo zazikulu zitha kukhala zosagwirizana.
2. Isostatic Pressing
Pazigawo zogwira ntchito kwambiri zomwe zimafuna kachulukidwe kwambiri komanso kufanana, kukanikiza kwa isostatic ndiyo njira yomwe amakonda.
Mfundo: Ufawo umasindikizidwa mu nkhungu zotanuka (kawirikawiri thumba la rabara) ndikuyikidwa mu chotengera chothamanga kwambiri, pogwiritsa ntchito madzi ngati njira yotumizira.
Ubwino Wachikulu: Kupsyinjika kumagwiritsidwa ntchito mofanana ndi ufa kuchokera kumbali zonse, zomwe zimapangitsa kuti zikhale zosakanikirana kwambiri mu thupi lonse lobiriwira komanso kuchepa kochepa pambuyo pa sintering.
Mapulogalamu:Amagwiritsidwa ntchito popanga machubu akuluakulu a ceramic, mabwalo, kapena ma fani a ceramic olondola.
3. Kujambula Tepi
Ngati muwona magawo ocheperako kwambiri a ceramic (monga ma board ozungulira m'mafoni a m'manja), amatha kupangidwa ndi tepi.
Mfundo:Ufa umasakanizidwa ndi zosungunulira, dispersant, ndi binder kupanga "slurry," yomwe kenako imafalikira pa lamba wotumizira pogwiritsa ntchito tsamba la dotolo kupanga filimu yopyapyala. Kenako filimuyo imawuma ndikusenda.
Ubwino: Wotha kupanga mapepala a ceramic owonda kwambiri okhala ndi makulidwe apakati pa 10 μm ndi 1 mm.
Mapulogalamu:Magawo ozungulira amafilimu okhuthala, ma multilayer ceramic capacitors (MLCC).
4. Kupanga jekeseni
Njirayi, yobwereka kumakampani apulasitiki, imagwiritsidwa ntchito popanga magawo okhala ndi ma geometri ovuta kwambiri.
Mfundo:Alumina ufa umasakanizidwa ndi kuchuluka kwa binder organic (mpaka kupitirira 40%), kutenthedwa, ndi kubayidwa mu nkhungu yolondola, kenako itakhazikika ndi kulimba.
Zovuta:Njira ya "debinding" (kuchotsa zinthu zakuthupi) musanayambe sintering ndi yaitali komanso yovuta; kusagwira bwino kungayambitse kusweka mosavuta.
Mapulogalamu:Zigawo za Ceramic mwatsatanetsatane, zida zachipatala.
5. Kupanga Zowonjezera (3D Printing)
Uwu ndiukadaulo wapamwamba kwambiri m'zaka zaposachedwa womwe umaphwanya malire omwe amapangidwa ndi nkhungu pamawonekedwe.
Njira zazikuluzikulu ndi izi: Stereolithography (SLA) kapena paste extrusion.
Ubwino: Palibe nkhungu zomwe zimafunikira, zomwe zimapangitsa kuti zikhale zoyenera kupanga ma prototypes kapena zoumba zadothi zomwe zimakhala zovuta kwambiri mkati (monga mafupa a biomimetic ndi tchipisi ta microfluidic).
