Abrasive yog cov khoom siv tseem ceeb hauv cov txheej txheem kev txiav thiab du cov hlau. Hauv qhov tseeb ntau lawm, feem ntau cov abrasives nquag suav nrog kev tsim muaj cov khoom neeg tsim tawm, corundum, emery, diatomaceous lub ntiaj teb, quartz xuab zeb thiab pumice.
Arty emery-nrog siab hardness thiab tsawg toughness (piv rau lwm yam abrasives) yog tsuas yog siv rau kev sib tsoo ntxhib thiab polishing ntawm cov hlau tsis tshua muaj zog (xws li npua hlau, tooj dag, tooj dag, thiab lwm yam).
Corundum-muaj ob yam khoom neeg tsim thiab ntuj tsim. Qhov ntau bauxite Al2O3cov ntsiab lus hauv corundum, qhov ntau dua nws qhov nyuaj. Corundum yog cov khoom zoo dua rau kev sib tsoo nrog lub sib tsoo sib tsoo. Nws muaj ntau dua kev coj nruj dua li cov khoom neeg tsim tawm. Qhov tawm ntawm corundum yog qhov sib txuam, thiab cov npoo ntse ntawm cov qhov me me yog blunt dua li cov ntawm cov khoom neeg tsim. Nws yog qhov tsim nyog rau polishing tougher hlau nrog ntau dua rhuav lub zog, xws li cov tawv hlau tawv, cam khwb cia hlau, manganese bronze, thiab lwm yam.
Emery-muaj nruab nrab cov tawv tawv thiab tawv zoo, haum rau polishing ntawm txhua tus hlau.
Diatomaceous lub ntiaj teb-muaj qhov tsis xws li ntuag ntuag thiab zoo tawv heev, uas tuaj yeem du tawm cov khawb thiab khawb ntawm cov hlau. Nws yog ib yam khoom siv polishing thiab polishing.
Quartz xuab zeb-hais nrog qhov nruab nrab hardness, nws tsis muaj qhov ntse txiav sab, thiab nws cov tawv kuj zoo heev. Nws yog cov hom phiaj dav dav polishing thiab cov khoom siv polishing.
Pumice-nws muaj qhov tsis zoo thiab nws yog qhov nkig, haum rau kev sib tsoo thiab polishing ntoo, tawv, roj hmab, yas thiab iav.
Raws li cov khoom ntiag tug ntawm ntau yam abrasives uas hais los saum toj no, kom suav sau, thaum sib tsoo cov khoom hlau nyuaj, nws raug nquahu kom siv cov khoom muaj hlau zoo, corundum lossis emery, thiab tom qab ntawd nplua nplua hmoov emery, pumice, quartz hmoov, thiab lwm yam Thaum polishing softer cov khoom hlau, diatomaceous lub ntiaj teb thiab pumice feem ntau siv.
