Raws li niaj hnub kev tsim khoom txuas ntxiv txhim kho, cov khoom siv abrasive tau siv ntau qhov kev siv ntau ntxiv. Ntawm lawv, plaub ntawm cov kev paub zoo tshaj plaws yog abrasivesxim av aluminium oxide, dawb fused alumina, dub fused alumina, thiab silicon carbide. Tag nrho plaub muaj Mohs hardness nyob ib ncig ntawm 9, ua rau lawv haum rau kev thov sib tsoo daim ntaub ntawv.
Txawm hais tias cov abrasives sib txawv zoo sib xws, lawv sib txawv hauv kev sib xyaw, kev ua tau zoo, thiab tus nqi. Qhov no yog vim li cas xim av aluminium oxide tau dhau los ua qhov nyiam thiab, ntau zaus, irreplaceable abrasive rau kev sib tsoo log ntau lawm.
Cov khoom siv raw
Brown aluminium oxide yog tsim los ntawm bauxite, thaum dub fused alumina kuj yog tsim los ntawm bauxite siv cov txheej txheem tsim khoom sib txawv me ntsis. Txawm hais tias lawv cov nqi tsim khoom zoo sib xws, dub fused alumina muaj tsawg dua aluminium oxide dua li xim av fused alumina.
Dawb fused alumina, ntawm qhov tod tes, yog tsim los ntawm siab -purity alumina hmoov, muab nws cov tsos dawb huv thiab ntau dua cov ntsiab lus txhuas oxide. Txawm li cas los xij, nws cov nqi tsim khoom kuj tseem muaj txiaj ntsig ntau dua.
Kev xaiv ntawm cov ntaub ntawv raw ncaj qha cuam tshuam rau cov ntsiab lus ntawm aluminium oxide thiab hardness ntawm abrasive. Feem ntau, qhov siab dua cov ntsiab lus ntawm aluminium oxide, qhov hardness thiab txiav ntau dua.
Nqi
Dawb fused alumina muaj aluminium oxide ntau dua li xim av aluminium oxide, tab sis nws kuj tseem kim dua. Dub fused alumina muaj cov ntsiab lus aluminium oxide qis dua thiab feem ntau tsis tshua kim dua li dawb fused alumina. Txawm li cas los xij, thaum cov khoom lag luam nrog cov ntsiab lus sib piv aluminium oxide piv, dub fused alumina feem ntau kim dua xim av fused alumina. Silicon carbide feem ntau tseem kim dua.
Los ntawm tus nqi- kev pom kev ua tau zoo, xim av aluminium oxide muaj qhov zoo tshaj plaws ntawm kev ua tau zoo thiab kev pheej yig, ua rau nws yog qhov kev xaiv pheej yig tshaj plaws rau kev tsim cov khoom sib tsoo.
Raws li kev sib tsoo log abrasive, xim av fused alumina muab tag nrho cov khoom tseem ceeb uas xav tau rau kev sib tsoo txhim khu kev qha, suav nrog kev ua haujlwm siab, zoo heev toughness, thiab siab bulk ntom. Thaum dawb fused alumina, dub fused alumina, thiab silicon carbide txhua tus muaj qhov zoo ntawm cov ntawv thov tshwj xeeb, xim av aluminium oxide tseem yog ib qho tseem ceeb tshaj plaws thiab siv cov khoom siv raw rau kev sib tsoo log vim nws qhov kev ua tau zoo thiab muaj txiaj ntsig zoo.
