Ukadaulo Wopanga Zinthu Zolimba Zosagwira Ntchito za Alumina

Zoumba za alumina ndi mtundu wa zoumba zaukadaulo, ndipo kugwiritsa ntchito zinthu za ceramic tsiku ndi tsiku n'kosiyana kwambiri. Zoumba za alumina zimadziwikanso kuti zoumba za alumina zomwe sizingawonongeke, chifukwa zimakhala ndi kukana bwino kuvala, kukana dzimbiri, kukana kutentha kwambiri, kotero zimagwiritsidwa ntchito kwambiri m'mafakitale achitsulo, malasha, migodi, simenti, mankhwala ndi mafakitale ena, ndipo ndi chisankho chabwino chokana kuvala m'mafakitale.

Njira yopangira zoumba za alumina nthawi zambiri imagawidwa m'magawo angapo: kukonzekera ufa, kukanikiza, ndi kusungunula.

Kuti mupange zoumba zouma zosatha ntchito bwino, ndikofunikira kusankha ufa wabwino wa alumina, womwe kukula kwake nthawi zambiri kumakhala 1μm kapena kuchepera. Pokonzekera ufa, zowonjezera zosiyanasiyana ziyenera kuwonjezeredwa kuti mupange ufa wokhala ndi makhalidwe osiyanasiyana.

Zida za alumina zitha kupangidwa m'njira zosiyanasiyana. Njira zomwe zimagwiritsidwa ntchito kwambiri ndi dry pressing molding, grouting molding, extrusion, isostatic pressing molding, injection method, rolling method, hot pressing method, gel method, etc. Kupereka molding ndiye chinsinsi chokonzekera zida za alumina zomwe sizingawonongeke ndi ntchito yabwino kwambiri. Kawirikawiri, zida za alumina zopangidwa ndi dry pressing ndi isostatic pressing process zimakhala ndi kuuma kwakukulu komanso kukana kuwonongeka.

Kusakaniza zinthu za alumina ndi gawo lofunika kwambiri. Pakati pawo, kuwongolera kutentha kwa zinthu za sintering ndiye mfundo yofunika kwambiri, kumatsimikizira kuchuluka, kapangidwe, ndi moyo wa ntchito ya zinthu za sintering.

Gawo lililonse la kupangazoumbaumba za aluminaimafuna kuwongolera ndi kuzindikira akatswiri, kuti ipeze zoumbaumba zabwino kwambiri zosatha kusweka.