Ntau cov tuam ntxhab ntawm cov khoom hnav-tiv taus xav tau dawb corundum micropowder, tab sis lub luag haujlwm ntawm cov hmoov dawb corundum micropowder yog dab tsi, nws muaj li cas, thiab kev sib raug zoo ntawm dawb corundum micropowder thiab alumina? Tom ntej no, peb yuav txheeb xyuas qhov kev sib raug zoo ntawm lawv hauv qhov tob.
Dawb corundum yog ntau yam zoo tib yam abrasive corundum hauv cov khoom abrasive. Nws yog ua los ntawm txhuas oxide hmoov ua cov khoom siv tseem ceeb los ntawm kev kub kub smelting, thiab cov ntsiab lus ntawm Al2O3feem ntau yog 97 feem pua -99 feem pua, uas yog dawb. Dawb corundum muaj siab hardness, lub abrasive tsis yooj yim rau npub, thiab nws toughness yog me ntsis inferior rau cov xim av corundum. Cov nplej abrasive tau yooj yim tawg nyob rau hauv siab los tsim cov txiav tshiab. Vim hais tias cov abrasive hardness siab dua li cov xim av corundum, nws yog ib qho yooj yim los txiav rau hauv cov khoom siv ua haujlwm, thiab cov nplej abrasive muaj qhov ua tau zoo ntawm tus kheej, yog li cov cuab yeej dawb corundum abrasive muaj peev xwm txiav tau zoo, uas tuaj yeem txo cov workpiece deformation thiab kub. tiam.
Yog li ntawd, dawb corundum abrasive yog tsim rau zoo sib tsoo, sharpening, xov sib tsoo thiab lwm yam zoo sib tsoo, nrog rau kev sib tsoo workpieces uas yog yooj yim deformed thiab burnt, xws li zoo sib tsoo hardened steel, high-speed steel, high-carbon steel thiab nyias-walled qhov chaw. Dawb corundum muaj cov qauv micro-nplaum, haum rau daim iav sib tsoo. Nyob rau tib lub sijhawm, dawb corundum kuj muaj cov yam ntxwv ntawm acid thiab alkali corrosion kuj, kub tsis kam, zoo thermal stability, thiab lwm yam. Nws yog dav siv nyob rau hauv precision casting, steel refractory, tshuaj refractory, tshwj xeeb ceramics, ceramics rau lub neej txhua hnub, tub rog kev lag luam, electronics thiab lwm yam high-tech teb.
Cov ntsiab lus ntawm sodium oxide nyob rau hauv ib txwm dawb corundum yog nyob nruab nrab ntawm 0.2-0.6 feem pua . Sodium oxide yog ib qho teeb meem impurity rau dawb corundum. Nws forms -Al2O3nrog alumina nyob rau hauv lub xeev molten, thiab tus nqi ntawm kev tsim nce nrog nce ntawm sodium oxide cov ntsiab lus.
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Nrog rau kev loj hlob sai ntawm kev ua lag luam ntawm high-end abrasives, hluav taws xob ceramics thiab high-end refractory cov ntaub ntawv, txo cov sodium cov ntsiab lus nyob rau hauv dawb corundum tau dhau los ua ib qho tseem ceeb kev tshawb fawb kev taw qhia los txhim kho qhov zoo ntawm dawb corundum. Muaj ntau txoj hauv kev rau kev tshem tawm sodium los ntawm corundum dawb, xws li tshem tawm sodium los ntawm cov khoom siv raw, ncaj qha mus yuav cov khoom siv uas tsis muaj sodium alumina raw cov ntaub ntawv, lossis tshem tawm sodium los ntawm high-sodium alumina raw cov ntaub ntawv, tab sis cov txheej txheem no yuav nce tus nqi, yog li nws yog qhov nyuaj rau siv corundum Cov tuam txhab tsim khoom siv nws hauv cov khoom siv.
