Kupanga Njira za Alumina Cerramics
Kukonzekera ufa
Ufa wa aluminiyamu oxide mu fakitaleyo amakonzedwa mu ufa wa ufa malinga ndi zofunikira zosiyanasiyana zamachitidwe ndi njira zosiyanasiyana zopangira. Tizilombo tating'onoting'ono tawung'ono ndiochepera 1μm, ngati kupanga zinthu zapamwamba kwambiri za alumina kuwonjezera pa kuyera kwa alumina mu 99.99%, komanso kuthira kwa ultrafine kukula ndikupanga tinthu yunifolomu yogawana. Pamene kutukuka kwa jekeseni kumagwiritsidwa ntchito, ma biders ndi ma pulasitiki ayenera kukhazikitsidwa mu ufa, nthawi zambiri ma thermoplastics kapena ma resin ndi gawo lolemera la 10-30%. Chingwe chomangira chiyenera kusakanizidwa kwambiri ndi ufa wa alumina pa 150-200 kutentha kuti upangire kuwumbidwa. Masamba okhala ndi ufa wopangidwa ndi kutentha kotentha sikufunikira kuwonjezera bider. Ngati semi-zokha kapena zowuma zowuma zokha zomwe zimagwiritsidwa ntchito, ufa uli ndi zofunikira zapadera, ndipo ndikofunikira kugwiritsa ntchito njira yopukutira ndi kuwoneka kuti imawoneka yowoneka bwino ya ufa ndikuwongolera khoma la nkhungu muumba. Kuphatikiza apo, kuti muchepetse mikangano pakati pa ufa ndi khoma la nkhungu, ndikofunikira kuwonjezera 1 mpaka 2% ya mafuta, monga steric acid, ndi nyemba pol.
Kuuma kowumba kanikiza, ufa wa ufa umafunikira, mowa wa polyvinyl umayambitsidwa ngati binder. Institute in Shanghai idapanga sera yosungunuka yamadzi ngati khola la glayi ya al203 yopukutira, yomwe ili ndi madzi abwino otentha. Ufa utatha kupopera mitengo kuyenera kukhala ndi madzi abwino, kachulukidwe, komanso kutentha kwamiyala yochepera 30. Pofuna kupeza kachulukidwe kachabechabe, kuchuluka kwa tinthu kukula kwake ndi koyenera.
Kupanga Njira
Njira zopangira zinthu za alumina ceramic zimaphatikizapo kukakamizidwa, kudzikuza, zowonjezera, kuzizira, kupindika, kuponya kutentha komanso kukanikiza, kukhazikika kotentha komanso kotentha kotentha. M'zaka zaposachedwa, kunyumba ndi kunja kwakhala ndikuumba yuluta, woumba jakisoni, woumba jakisoni, jakisoni wa centrifigal akuumba ndi ukadaulo waulere waulere. Maonekedwe osiyanasiyana ogulitsa, kukula kwake, mawonekedwe ovuta ndi malonda ogwirira ntchito amafunikira njira zosiyanasiyana zowumbira.
Kuyamba kwa mawonekedwe ake wamba:
1, Wowuma Wowuma: Alumina Conramic Ourctogelogy Wowuma Mapangidwe osavuta ndi khoma lamkati lambiri kuposa 1mm, kutalika ndi diameter sizambiri kuposa 4: 1 zinthu. Njira zowumbidwa ndi zosavomerezeka kapena zounitse. Osindikiza ali ndi mitundu iwiri ya mtundu wa hydraulic ndi mtundu wamakina, womwe ungakhale njira yodzipangira yokha kapena yopanga zokha. Kupanikizika kwakukulu kwa 200mmka. Kutulutsa kumatha kufikira 15 ~ 50 zidutswa pamphindi. Chifukwa cha yunifolomu woponderezedwa kwa makina a hydraulic, kutalika kwa magawo olimbikitsa ndi osiyana pomwe mafayilo akudzaza ndi osiyana. Kukula kwa kukakamizidwa ndi makina osindikizira kumasiyanasiyana chifukwa cha kuchuluka kwa ufa, zomwe ndizosavuta kuchititsa kuti musinthe kukula kwa shrintering komanso kumakhudza mtundu wa malonda. Chifukwa chake, kugawa yunifolomu ya tinthu tating'onoting'ono potsatsa ndikofunikira kwambiri pakudzaza nkhungu. Kaya zodzaza ndizolondola kapena sizikukhudza kwambiri kuwongolera kwa kukula kwa magawo opangidwa a alumina. Masamba okhala ndi 60μm, pakati pa 60 ~ 200 mesh amatha kupeza mphamvu yotsika mtengo, kuti mukwaniritse zovuta kwambiri.
2, Njira Yosaulira: Kuumba kopusitsa ndi njira yoyambirira youmbidwa kwambiri yomwe imagwiritsidwa ntchito alumina centics. Chifukwa cha kugwiritsa ntchito gypsum nkhungu, mtengo wake ndi wotsika ndipo ndikosavuta kupanga kukula kwakukulu komanso magawo ovuta. Chinsinsi cha Kuumba Woyimba ndi kukonza alumina slorry. Nthawi zambiri madzi amagwiritsidwa ntchito ngati sing'anga ya flux, kenako omsuchapo ndi wolumikizira atawonjezeredwa, pambuyo popukutira kwathunthu, gasiyo imatulutsidwa, kenako pulasitiki imathiridwa kumbuyo. Chifukwa cha kuyamwa kwamadzi ndi ma capillaries a pulasitala nkhuni, kusefukira kumakhazikika mu nkhungu. Popanda kukoma, malo ochulukirapo ayenera kutsanulidwa pomwe otsekeka otsekeka pa khoma la nkhungu limafikira makulidwe ofunikira. Pofuna kuchepetsa shrazage ya thupi, malo ochepera kwambiri ayenera kugwiritsidwa ntchito momwe angathere.
Zowonjezera zowonjezera ziyeneranso kuwonjezeredwa ku ma alumina cerarry kuti apange kawiri pamagetsi ocheperako kuti malo otsekemera athetse. Kuphatikiza apo, amanga mowa wa vinyl, methyl cellulose, anyimbo a Amnes ndi omwazika monga polyacrylamide ndi chingamu amawonjezeredwa kuti apange malo oyenera ochita masewera olimbitsa thupi.
