Kuyambitsa njerwa zapamwamba za aluminiyumu zopepuka

Njerwa zapamwamba za aluminiyumu zopepuka zotchinjiriza ndi zinthu zomwe zimateteza kutentha kwa bauxite monga zopangira zazikulu zomwe zili ndi Al2O3 zosachepera 48%. Kupanga kwake ndi njira ya thovu, komanso ikhoza kukhala njira yowonjezera yowotcha. Njerwa zapamwamba za aluminiyumu zopepuka zimatha kugwiritsidwa ntchito pomanga zigawo ndi zigawo popanda kukokoloka kwamphamvu komanso kukokoloka kwa zida zosungunuka zotentha kwambiri. Mukakumana ndi malawi, nthawi zambiri kutentha kwapamwamba kwa njerwa ya aluminiyamu yopepuka sikuyenera kupitirira 1350 ° C.

Maonekedwe a njerwa ya aluminiyamu yopepuka yopepuka
Ili ndi mawonekedwe okana kutentha kwambiri, mphamvu yayikulu, kachulukidwe kakang'ono kocheperako, porosity yayikulu, kutsika kwamafuta, kukana kutentha kwambiri, komanso ntchito yabwino yotchinjiriza kutentha. Ikhoza kuchepetsa kukula ndi kulemera kwa zipangizo zotentha, kuchepetsa nthawi yotentha, kuonetsetsa kutentha kwa ng'anjo yofanana, ndi kuchepetsa kutentha kwa kutentha. Itha kupulumutsa mphamvu, kupulumutsa zida zomangira ng'anjo ndikutalikitsa moyo wautumiki wa ng'anjo.
Chifukwa cha porosity yake yayikulu, kachulukidwe kakang'ono kocheperako komanso ntchito yabwino yotchinjiriza matenthedwe,njerwa zapamwamba za aluminiyumu zopepukaamagwiritsidwa ntchito kwambiri ngati zida zodzaza zotenthetsera mumlengalenga pakati pa njerwa zowotcha ndi matupi akung'anjo mkati mwa ng'anjo zosiyanasiyana zamafakitale kuti achepetse kutentha kwa ng'anjo ndikupeza mphamvu zambiri. Malo osungunuka a anorthite ndi 1550 ° C. Lili ndi mawonekedwe a kachulukidwe kakang'ono, kachulukidwe kakang'ono ka kutentha kwamafuta, kutsika kwamafuta, komanso kukhala kokhazikika pakuchepetsa mlengalenga. Itha kusintha pang'ono dongo, silicon, ndi zida zapamwamba za aluminiyamu, ndikuzindikira kupulumutsa mphamvu ndi kuchepetsa umuna.