Dab tsi yog grit ntawm sandpaper? Yuav xaiv cov grit li cas

Taw qhia rau cov ntawv xuab zeb grit
Hauv txoj ntsiab cai, cov ntawv xuab zeb grit yog tib yam li cov ntaub ntawv, cov cuab yeej txiav. Yog tias peb soj ntsuam nyob rau hauv lub tshuab kuaj kab mob, peb tuaj yeem pom tias qhov chaw ntawm daim ntawv xuab zeb grit yog tib yam li cov ntaub ntawv saum npoo, nrog cov khoom ntse, uas yog tsau rau hauv daim ntawv nrog cov kua nplaum. Nrog rau txhua qhov swb ntawm cov ntawv xuab zeb grit ntawm qhov chaw ntawm cov khoom, cov khoom nyuaj no yuav txiav qee cov khoom los ntawm qhov chaw ntawm cov khoom. Qhov no yog microscopic thiab ua tau zoo ntawm kev txiav.
Txawm hais tias feem ntau cov ntawv xuab zeb grit sib txawv ntawm 12 mesh mus rau 20, 000 mesh, nws yuav tsum tau muab sau tseg tias cov yam ntxwv ntawm cov ntawv xuab zeb nws tus kheej yuav tsis hloov nrog qhov nce ntawm grit thiab txo qhov me me. Nws tseem yuav txiav cov khoom los ntawm qhov chaw ntawm qhov khoom yam tsis hloov nws cov khoom.
Vim li cas ho hais txog cov kab lus "tsis txhob hloov cov khoom ntawm cov khoom"? Ntau tus neeg uas ua haujlwm ntawm seamless tej yaam num yuav pom tau hais tias txawm lub siab npaum li cas ntawm grit ntawm sandpaper siv thaum ua cov seams, lawv tseem tuaj yeem pom qhov txawv ntawm qhov sib txawv ntawm seam thiab lwm qhov chaw, los yog lawv yuav pom tau tias qhov whitened ib feem tom qab txiav. lub rooj vag tsis tuaj yeem raug tshem tawm tag nrho txawm tias xuab zeb ntau npaum li cas. Qhov laj thawj yog qhov yooj yim: cov khoom ntawm cov yas yog hloov los ntawm cov kuab tshuaj siv rau kev sib koom ua ke lossis rub lub cuab yeej, thiab qhov kev hloov no tsis tuaj yeem ua tiav los ntawm kev txiav tshwj tsis yog tias qhov txiav qhov tob tshem tawm tag nrho cov khoom hloov kho. Tau kawg, cov cuab yeej rub tawm tsis raug yuav ua rau lub ntsej muag tig dawb 1-2 hli hauv qab ntawm qhov chaw, nyob rau hauv rooj plaub uas yuav tsum tau txiav txim siab tuaj yeem xav txog.
Hauv cov ntsiab lus, lub luag haujlwm ntawm cov ntawv xuab zeb yog hloov cov duab ntawm cov khoom los ntawm kev txiav. Qhov kev hloov pauv ntawm cov duab no yuav ua rau lub dav hlau flatter lossis tshem tawm cov khoom tsis tsim nyog ntawm qhov chaw, tab sis cov ntawv xuab zeb tsis tuaj yeem hloov cov yam ntxwv ntawm cov khoom.
Taw qhia rau cov ntawv xuab zeb grit tooj
Yuav siv sandpaper grit li cas? Siv finer grit los ntawm ntxhib mus rau nplua. Feem ntau hais lus, rau cov nyiaj txiav loj dua, siv 100-200 grit sandpaper, kom koj tuaj yeem txiav ze li 1 mm tob ncaj qha rau ntawm tus qauv saum npoo hauv ob peb feeb.
Tom qab siv 100-grit sandpaper, koj yuav tsum siv 150-grit sandpaper es tsis txhob ntawm 200-grit sandpaper rau polishing tom ntej. Tom qab siv 150-grit sandpaper, koj yuav ntsib teeb meem: koj puas yuav tsum siv 200-grit lossis 250-grit? Lub grit ntawm cov ntawv xuab zeb yog qhov kwv yees tus nqi, ib yam li lub aperture ntawm lub koob yees duab.
Muaj tseeb yog 220-grit sandpaper, tab sis peb hais txog 200-grit sandpaper tsuas yog ua kom nws yooj yim dua thiab nco. Qhov tseeb grit ntawm cov ntawv xuab zeb yog 220 (P220) thiab 240 (P240). Qhov twg kuv yuav tsum xaiv ntawm 220 thiab 240? Txoj cai kwv yees siv tau, yog li xaiv 220. Nco ntsoov tias cov grit ntawm cov ntawv xuab zeb raug txiav, thiab qhov loj ntawm cov grit, qhov me me ntawm cov ntawv txiav. Yog tias cov grit txawv dhau lawm, nws yuav tsis tuaj yeem tshem tawm cov qhab nia ntawm daim ntawv xuab zeb kawg.
Rau kev tsim qauv tiag tiag, nws txaus los pib nrog 220 lossis 300-grit sandpaper. Tom qab tag nrho, cov qauv qhov chaw yog qhov muag heev thiab tsis tas yuav txiav los ntawm kos. Thaum siv cov ntaub ntawv, peb feem ntau pom tias qhov khoob ntawm cov ntaub ntawv cov hniav muaj cov khib nyiab. Qhov tshwm sim no hu ua clogging. Feem ntau, peb yuav tsum tau siv cov txhuam txhuam txhuam kom tshem tawm cov khib nyiab ntawm cov hniav ntawm cov ntaub ntawv, txwv tsis pub, cov khib nyiab no yuav hloov cov lis loj ntawm cov ntaub ntawv thiab yuav khawb qhov saum npoo ntawm ib feem ua ke nrog cov khoom me me uas ua rau lub sijhawm ua ntaub ntawv.
Thaum siv cov ntawv xuab zeb nrog lub thickness ntawm ntau tshaj 800 lub hlis, nws yuav tsum tau yaug nrog dej, txwv tsis pub cov khoom khib nyiab ntawm cov ntawv xuab zeb thiab ib feem yuav ua rau lub ntsej muag du. Thaum cov ntawv xuab zeb nrog lub thickness ntawm 2000 hli tig dawb tom qab siv ob peb zaug, nws raug muab pov tseg ncaj qha, thiab tsis muaj nqi rau kev siv nws dua. Ntau tus neeg yuav xav tias qhov no yog pov tseg, tab sis qhov no yog lub luag haujlwm ntawm cov ntawv xuab zeb. Sandpaper tsis txiav quab yuam tsis txawv ntawm cov ntawv pov tseg.