Ib qho ntawm cov khoom tseem ceeb ntawm cov abrasive yog nws txoj kev tawv, uas yuav tsum yog qhov nyuaj dua li cov khoom siv uas yuav raug ua. Mohs hardness tester feem ntau siv los txiav txim xyuas qhov nyuaj ntawm ntau yam abrasives. Lwm cov cuab yeej tseem ceeb ntawm abrasives yog toughness lossis qee lub zog. Tus nqi sib xyaw, kev huv, qhov loj me thiab cov qauv siv lead ua ntawm cov khoom siv raw tuaj yeem hloov pauv los tswj cov kev ua no kom haum rau ntau yam kev siv.
Hauv kev tsim cov khoom lag luam tu, txhua yam ntaub ntawv nyoos tshwj tsis yog hmoov talc thiab hlau oxide xav tau zuaj thiab sieved. Lub sieving qhov loj me yuav tsum yog 4 txog 900, uas yog, lub taub yog li 6 hli (hli) mus rau 6 microns (txhiab txhiab txog 1 hli). Ib qho lossis ntau dua. Kev sib tsoo log yog qhov tseem ceeb tshaj plaws abrasive khoom. Nws yog tsim los ntawm kev sib xyaw ntawm cov kab ua kom tsis muaj zog thiab ua rau tus neeg saib xyuas hauv ib qho kev faib ua feem, thiab sintering tom qab molding. Thaum kawg, nws yuav tsum yauv mus ua duab thooj, sib npaug thiab ntsuas ntau dhau. Emery daim ntaub thiab ntwav txhuam yog lwm yam khoom lag luam abrasive nrog cov zis loj. Lawv tau ua los ntawm cov abrasive nplej sib khi rau cov khoom siv puag (ntaub lossis ntawv), qhuav thiab txiav rau hauv cov khoom ntawm cov khoom sib txawv. Lwm tus yog hmoov lossis ntau hom abrasives. Tom qab kuaj xyuas, lawv yuav tsum tau ua los ntawm qee cov txheej txheem, xws li abrasives rau kev sib tsoo los yog polishing, feem ntau nrog cov roj ntxhia lossis siv quav ciab thiab lwm cov ntaub ntawv pabcuam kom tau raws li qhov xav tau ntawm cov haujlwm ua haujlwm sib txawv.
