Kev sib piv ntawm CBN sib tsoo log thiab pob zeb diamond sib tsoo log

Yog hais tias lub log sib tsoo raug cais los ntawm abrasive, nws tuaj yeem muab faib ua cov tsoos abrasive thiab superhard abrasive. Superhard abrasives tuaj yeem muab faib ua CBN thiab pob zeb diamond.

Lub hardness ntawm CBN thiab pob zeb diamond yog ntau dua li cov tsoos abrasives, uas tuaj yeem siv los ua cov khoom ua haujlwm. Yog li thaum xaiv super nyuaj sib tsoo log, tus twg yuav tsum xaiv CBN sib tsoo log lossis pob zeb diamond sib tsoo log?

Ua ntej cia coj asaib qhov sib txawv ntawm ob qho abrasives.

CBN yog cubic boron nitride, uas yog synthesized los ntawm General Electric tuam txhab ntawm lub tebchaws United States nyob rau hauv lub xyoo 1950s siv dag zog txoj kev nyob rau hauv lub kub kub thiab kub siab tej yam kev mob, thiab nws hardness yog thib ob tsuas yog pob zeb diamond.

Pob zeb diamond yog lub siab tshaj plaws hardness ntawm abrasive, ntuj pob zeb diamond muaj siab stability, tab sis tus nqi kuj yog siab, lub pob zeb diamond siv nyob rau hauv kev lag luam manufacturing yog feem ntau dag pob zeb diamond.

1. Xaiv raws li qhov hardness ntawm lub workpiece

General abrasive hardness yog 4 lub sij hawm siab dua lub workpiece hardness, yog li raws li lub workpiece hardness yuav txiav txim seb lub pob zeb diamond thiab CBN yog tsim nyog.

2. Xaiv raws li cov khoom ntawm lub workpiece

CBN raug pom zoo rau cov khoom siv hlau

Pob zeb diamond pom zoo rau cov khoom tsis muaj hlau

Vim hais tias cov pob zeb diamond chemically reacts nrog cov pa roj carbon nyob rau hauv cov hlau, nce tus nqi ntawm lub pob zeb diamond, lub abrasive kuj passivates, txo cov txiav quab yuam.

3. Xaiv raws li kev sib tsoo log ceev

Kev kub siab yuav ua rau ceev ceev ntawm pob zeb diamond, yog li thaum lub sib tsoo log ceev yog siab, qhov kub yuav nce, uas yuav ua rau ceev ceev ntawm kev sib tsoo log. Thaum CBN belongs rau lub crushing qauv, thaum lub sib tsoo log ceev ceev, nws muaj peev xwm ua si tus kheej-sharpening ntawm abrasive thiab tuav ib tug tej yam sharpness.