Koj paub ntau npaum li cas txog cov abrasives?

1.Abrasives Txheej txheem cej luam

Abrasives yog cov cuab yeej thiab cov khoom siv hauv kev sib tsoo, lapping thiab polishing. Abrasives yog cov ntaub ntawv uas ua lub luag haujlwm txiav hauv cov txheej txheem no, thaum abrasives yog cov cuab yeej tsim los ntawm kev sib txuas cov abrasives thiab cov binders hauv ib qho duab thiab loj. Abrasives yog dav siv nyob rau hauv machinery manufacturing, hlau ua, khoom noj khoom haus, papermaking kev lag luam, thiab non-metallic khoom ua teb xws li ceramics, iav, pob zeb, yas, roj hmab, thiab ntoo.

 

2.Classification ntawm abrasives

Cov roj av uas tau muab cais ua ob pawg: cov aberasives thiab cov abrasives.

(1) ntuj abrasives

Txhua cov ntaub ntawv nyob rau hauv qhov xwm uas tuaj yeem siv rau kev sib tsoo lossis polishing yog kev xa mus ua ke ua cov abrasives. Tej txwm ntuj abrasive muaj xws li pob zeb diamond thiab corundum. Ntawm lawv, pob zeb diamond, nrog nws qhov kev tawv tawv heev thiab kev kho cov khoom lag luam uas nyuaj rau cov khoom lag luam (xws li cemented carbide, lub pov haum iav, pob zeb, thiab lwm yam). Txawm hais tias sapphire thiab ruby ​​nyob rau hauv ntuj corundum yog siv rau cov hniav nyiaj hniav kub, dog dig corundum tuaj yeem siv ua cov abrasive ua kom sib tsoo lub log, roj av, xuab zeb, thiab lwm yam.

(2) Artificial Abrasives

Artificial abrasives tau txais los ntawm cov khoom siv hluavtaws thiab muaj ntau yam kev siv. Cov khoom siv abrasives ntawm corundum series muaj xws li xim av corundum, dawb corundum, zirconium corundum, ib leeg siv lead ua corundum, thiab lwm yam. Lawv txhua tus muaj lawv tus kheej yam ntxwv. Piv txwv li, xim av corundum muaj nruab nrab hardness, zoo toughness, thiab tus nqi qis, uas yog haum rau kev ua hlau nrog siab tensile zog; dawb corundum muaj ib tug me ntsis hardness tshaj xim av corundum, zoo tus kheej-sharpening thiab muaj zog sib tsoo muaj peev xwm; ib leeg siv lead ua corundum muaj ntau dua hardness thiab toughness, tab sis cov nqi ntau lawm yog siab dua. Tsis tas li ntawd, silicon carbide abrasives xws li dub silicon carbide thiab ntsuab silicon carbide yog tsim rau kev ua cov tawv tawv thiab nkig hlau thiab cov khoom uas tsis yog xim hlau vim lawv cov hardness siab, siab brittleness thiab muaj zog hnav tsis kam.

 

3.Classification ntawm Abrasives

Cov abrasivesives yuav muab faib ua ntuj ntuj muaj abrasives thiab cuav abrasives raws li qhov chaw ntawm cov khoom nyoos. Ntuj cov av qeeg tsuas yog suav nrog cov roj av, thaum cov nqaj ntoo sib tsoo tau muab faib ua tsib yam qauv raws li lawv cov qauv thiab cov duab zeb ua ke raws li lawv cov qauv zoo nkauj Tsis tas li ntawd, cov av nyoog tseem ceeb tau suav hais tias yog ib hom abrasives.

Cov abreded abrasives yog tsim ntawm abrasives, binders thiab pores. Cov abrasives yog siv rau kev txiav, cov binders yog siv los khi cov abrasives mus rau qee yam duab, thiab cov ntxaij nyias. Cov kev khi tau muab faib ua cov pob txha caj dab (xws li Ceramics, magicia, roj av, cov roj hmab thiab cov roj hmab thiab cov roj hmab feem ntau siv.

 

4.Kev xaiv cov qauv ntawm cov cuab yeej abrasive thiab abrasives

Thaum xaiv cov cuab yeej abrasive, nws yog ib qho tsim nyog los txiav txim siab cov khoom ntawm cov khoom siv ua haujlwm, kev ua haujlwm raug, nto roughness, sib tsoo efficiency thiab lwm yam yuav tsum tau ua. Tshwj xeeb, cov hauv qab no yuav tsum tau ua raws li:

Xaiv abrasive:Thaum sib tsoo cov ntaub ntawv nrog cov hardness siab, abrasives nrog siab dua hardness yuav tsum tau xaiv; Thaum sib tsoo cov khoom siv nrog lub zog tensile siab, abrasives nrog siab toughness yuav tsum tau xaiv; Thaum sib tsoo cov ntaub ntawv uas tsis muaj zog tensile, nkig los yog high-strength silicon carbide abrasives yuav tsum tau xaiv.

Particle loj xaiv:Thaum lub roughness ntawm workpiece yuav tsum yog av yuav tsum tau siab, ntxhib particle loj yuav tsum tau xaiv; Thaum lub ntsej muag saum npoo yuav tsum tau ua kom tsawg, zoo particle loj yuav tsum tau xaiv. Thaum lub geomaleric qhov tseeb ntawm cov workpiece yog yuav tsum tau siab thiab thaj chaw tiv tauj yog me me, zoo me me qhov loj yuav tsum tau xaiv; Thaum lub cheeb tsam tiv tauj yog loj, ntxhib particle loj yuav tsum tau xaiv.

Hardness Xaiv:Thaum sib tsoo cov ntaub ntawv nyuaj, softer abrasives yuav tsum tau xaiv kom blunt abrasive hais tuaj yeem poob rau lub sijhawm; Thaum sib tsoo cov ntaub ntawv mos, yuav tsum xaiv cov abrasives nyuaj los tiv thaiv cov khoom tsis zoo los ntawm kev poob thaum ntxov. Tsis tas li ntawd, yam xws li kev sib tsoo log linear ceev, workpiece rotation ceev, thiab thermal conductivity kuj yuav cuam tshuam rau kev xaiv ntawm abrasive hardness.

Kev sib tsoo cov cuab yeej thiab cov khoom muaj absepensable cov cuab yeej hauv kev lag luam ntau lawm, thiab lawv cov kev ua tau zoo cuam tshuam rau kev ua cov khoom zoo thiab ua tau zoo. Yog li ntawd, thaum xaiv thiab siv cov hniav sib tsoo thiab cov abrasives, nws yog ib qho tsim nyog kom nkag siab txog lawv cov yam ntxwv thiab ua raws li cov ntsiab cai xaiv kom ua tiav cov nyhuv zoo tshaj plaws. Nyob rau tib lub sijhawm, nrog kev nce qib nruam kev tshawb fawb thiab thev naus laus zis thiab kev ua tau zoo ntxiv rau cov cuab yeej thev naus laus zis thiab txhim kho kev txhawb nqa rau kev lag luam kev lag luam.