1. Lub tsev rauj tsoo tsoo cov khoom siv los ntawm kev kub ceev uas tig rauj thiab cov khoom sib tsoo cov khoom ntuag. Nws muaj cov yam ntxwv ntawm cov qauv yooj yim, loj loj piv piv thiab siab ntau lawm ntau lawm. Nws haum rau nruab nrab hardness thiab brittle cov ntaub ntawv hauv liaj teb, pub chaw ua zaub thiab woodworking machinery factories. Ua ib tug mos mos. Cov khoom lag luam tuaj yeem hloov kho lub vijtsam sieve tuag lub qhov loj los ua cov khoom loj sib txawv thaum kawg, kom tau raws li cov neeg siv sib txawv thiab cov kev xav tau.
2. Rauj zeb zeb tsuas yog nyob ntawm qhov kev cuam tshuam kom tawg cov khoom. Cov khoom nkag rau hauv lub tsev rauj thiab raug tsoo los ntawm qhov kev cuam tshuam ntawm kev kub ceev teb qhov rauj s . Cov khoom sib tsoo tau txais lub zog los ntawm tus rauj s , thiab maj nrawm los ntawm kev kub ceev mus rau tus ncej baffle thiab sieve bar tib lub sijhawm. Cov ntaub ntawv tsoo nrog txhua lwm yam thiab raug crushed ntau zaus. Cov khoom siv me dua qhov sib txawv nruab nrab ntawm qhov screen kab yog cais tawm los ntawm qhov sib txawv. Cov khoom loj dua yog tsoo los ntawm kev cuam tshuam ntawm rab rau ntawm sieve bar, sib tsoo, tsoo thiab tsoo. Cov khoom siv yog hammered. Lub rauj tawg yog extruded los ntawm qhov sib txawv. Yog li tau txais ib yam khoom ntawm qhov xav tau qhov loj me.
3. T nws tag nrho lub tshuab xaiv cov khoom zoo thiab txoj siv sia siv, uas muaj cov tsos zoo nkauj thiab cov qauv zoo. Cov khoom siv tau thiab cov khoom siv tseem ceeb yog ua los ntawm cov qib zoo hlau thiab hnav cov ntaub ntawv tsis zoo.
4. siv tau cov ntaub ntawv raw khoom: txiv laum huab xeeb plhaub, plhaub taum txiv ntoo, cog quav thiab qia, nyom, xyoob, thiab ntoo.