Kub calcined xim av txhuas oxideyog tsim los ntawm kev kub kub thiab nruab nrab nruab nrab pom abrasives thaum lub sijhawm tsim khoom ntawm xim av feded alumina, thiab tom qab ntawd analealed.
Cov yam ntxwv tseem ceeb ntawm calcined xim av txhuas oxide
Qhov nthuav kev nthuav dav yog me me, lub hydrophilicity yog qhov zoo, lub zog yog siab, thiab lub zog yog siab. Cov sintered abrasive muaj cov yam ntxwv ntawm tsaus xiav tom qab kev tawg thiab ntau yam kev sib tsoo ntawm kev ua kom muaj kev sib cais thiab cov khoom siv sib tsoo.
1. Lub calcination ua rau cov xim daj alumina ntau dua hnav {{free {{tiv taus lub zog sib tsoo, thiab muaj ntau dua kev sib tsoo. Kev kho mob oxidizes cov tshuaj hauv xim av fused alumina, ua rau lub crystal lattice mus ntsws, ua cov khoom siv ntau compressive thiab siab {3} lub zog. Ib txhij, kev ntxhov siab sab hauv ntawm cov khoom siv nce thaum rov kho dua. Qhov no tso cai rau sam xim av txhuas oxide yuav tsum tau ua rau muaj ntau yam khoom muaj abrasive.
2. Tom qab satin sintering, xim av fused alumina khoom nthuav thiab tawg vim yog hlau corundum qhwv ib ncig ntawm saum npoo. Yog tias cov khoom siv sib nqus, nws yuav yooj yim nqus lub zog sib nqus, txo cov khoom siv cov ntsiab lus sib nqus. Nyob rau tib lub sijhawm, hloov pauv cov xim liab txhuas txhuas tsis ua rau muaj kev xeb, txhim kho cov tsos thiab kev txiav cov cuab yeej ntawm cov khoom siv abasive.
3. Tom qab calcining xim av fused alumina ntawm ob peb puas degrees Celsius rau kwv yees li ob teev, nws hydrophilicity nce ob peb zaug. Kev tshawb fawb tau pom tias impurities nyob rau saum npoo ntawm lub xim daj fused alumina tau raug tshem tawm huv. Hlawv cov tshuaj nrog qis melting cov ntsiab lus ua kom muaj txiaj ntsig xim av txhuas oxide ntau ruaj thaum ua cov cuab yeej sib tsoo.
