Kev ceev faj rau kev siv cov ntawv xuab zeb dej

1. Cov ntawv dej abrasive yuav tsum tau polished nrog dej thiab tsis tuaj yeem qhuav hauv av. Yog tias nws yog av qhuav ncaj qha, cov khib nyiab ntawm cov abrasive yuav ua raws li qhov sib txawv ntawm cov dej abrasive ntawv, uas yuav ua rau tsis muaj zog ntawm kev sib txhuam thiab kev sib tsoo ntawm cov ntawv abrasive. Qhov no yuav tsis tsuas yog cuam tshuam rau kev sib tsoo, tab sis kuj ua rau cov dej abrasive ntawv yuav yooj yim dua puas.

2. Muaj cov qauv sib txawv ntawm cov ntawv dej abrasive. Thaum sib tsoo, siv cov ntawv coarse abrasive nrog cov qauv me me ua ntej, thiab maj mam nce tus qauv loj ntawm cov ntawv dej abrasive kom polish thiab polish dua.

3. Ua siab ntev thaum polishing, vim tias tib qhov chaw yuav tsum tau polished ntau zaus. Tom qab txhua qhov sib tsoo, cov qauv ntawm cov ntawv dej abrasive yuav tsum tau hloov. Ua ntej hloov, qhov chaw tsuas yog polished yuav tsum tau ntxuav nrog dej huv.