Xaiv qhov zoo ntawm cov ntawv xuab zeb grit loj thiab hais lus zoo rau kev ua tsis tiav sanding

Sandpaper yog ib qho khoom siv tseem ceeb rau DIY crafts, rooj tog kho dua tshiab, thiab kev ua lag luam. Tab sis koj puas tau khawb koj lub workpiece los yog poob efficiency los ntawm kev xaiv qhov tsis ncaj ncees lawm grit? Qhov tseeb, muaj ib qho kev sib koom ua ke tom qab "coarseness" ntawm cov ntawv xuab zeb. Mastering tus qauv no tso cai rau koj tswj hwm koj cov txiaj ntsig sanding. Kab lus no yuav piav qhia txog cov kev paub tseem ceeb ntawm cov ntawv xuab zeb grit, los ntawm cov qauv mus rau kev siv.

 

Ⅰ. Sandpaper grit yog dab tsi? Cov qauv tseem ceeb yog ob qho no

 

Sandpaper grit, hauv cov ntsiab lus yooj yim, hais txog qhov loj ntawm cov khoom abrasive ntawm daim ntawv xuab zeb. Qhov me me ntawm tus lej grit, lub coarser cov khoom; tus lej loj dua, qhov zoo dua cov khoom. Tam sim no muaj ob lub ntsiab lus grit hauv ntiaj teb, uas yuav tsum tau paub qhov txawv thaum siv hauv tsev:

1. Suav tus qauv (GB/T 9258.1) siv tus "P" + tus lej tsim, xws li P80 thiab P120. Tus lej ncaj qha mus rau qhov nruab nrab abrasive particle loj (unit: microns). Qhov no yog qhov kev siv ntau tshaj plaws hauv kev lag luam hauv tsev thiab cov neeg siv khoom lag luam, yog li xav txog qhov kev xaiv no thaum yuav khoom.
2. Cov txheej txheem thoob ntiaj teb (ISO 6344) ua raws tib lub logic raws li cov qauv hauv Suav teb thiab tseem siv lub npe "P" + tus lej. Cov naj npawb ntau thiab cov ntaub ntawv loj me me yog qhov sib xws. Piv txwv li, P240 sawv cev zoo -grit sandpaper hauv ob qho tib si hauv tsev thiab thoob ntiaj teb cov qauv thiab tuaj yeem siv sib hloov.

 

Lub tswv yim: Qee cov ntawv xuab zeb tuaj yeem raug cim nrog "tus lej mesh" (xws li 100 mesh). Tus lej mesh yog hais txog tus naj npawb ntawm qhov ntawm qhov screen ib square inch, uas tuaj yeem sib haum nrog tus lej P (xws li 100 mesh ≈ P100), tab sis qhov tseeb tsis zoo li tus lej P. Nws raug nquahu kom muab qhov tseem ceeb rau cov khoom uas cim nrog tus lej P.

 

Ⅱ. Feem ntau siv particle qhov ntau thiab tsawg yog muab faib ua 3 pawg, sib xws rau sib txawv sib txawv scenarios

 

Raws li cov coarseness thiab fineness ntawm cov nplej, cov xuab zeb tuaj yeem muab faib ua peb pawg: ntxhib, nruab nrab thiab nplua. Cov xwm txheej sib txawv yuav tsum muaj ntau qhov sib txawv kom tsis txhob "ib kauj ruam tsis raug thiab tag nrho cov kauj ruam tsis raug":

1. Coarse particle loj (P40-P80): Tshwj xeeb rau "shaping", tshem tawm cov khoom ceev

Cov yam ntxwv ntawm cov nplej: Cov nplej loj nrog qhov dav dav ntawm lawv tsim muaj zog txiav quab yuam thaum xuab zeb, tawm hauv qhov sib sib zog nqus khawb ntawm qhov chaw ua haujlwm.

Daim Ntawv Thov: - Kev xuab zeb ua ntej ntawm ntoo thiab hlau blanks kom tshem tawm burrs thiab ntse npoo; Tshem tawm cov rooj tog qub thiab cov xim qub; - Reshaping loj workpieces (xws li ntxhib shaping ntawm ntoo carvings).

Lus Cim: Coarse-grit sandpaper tsuas yog siv rau "priming." Tom qab ntawd tom qab sanding nrog nruab nrab - los yog nplua -grit sandpaper yog yuav tsum tau, txwv tsis pub lub nto yuav ntxhib.

2. Qhov nruab nrab particle loj (P100-P240): Lub ntsiab quab yuam rau theem thiab sib txuas coarse thiab zoo hais

Cov yam ntxwv ntawm cov qoob loo: Nruab nrab-grit sandpaper muaj qhov loj me me, tshem tawm cov ntxhib khawb tsis dhau - txiav, ua rau nws lub hauv paus tseem ceeb ntawm cov xuab zeb.

Daim ntaub ntawv: nto leveling tom qab ntxhib sanding (xws li, smoothing lub grain ntawm ntoo tom qab sanding); ua ntej-kev kho mob ntawm qhov chaw hlau (xws li, tshem tawm xeb thiab cov cim ua ntej pleev xim); thiab feem ntau sanding ntawm yas thiab resin qhov chaw (xws li, trimming qauv qhov chaw).

Lub luag haujlwm tseem ceeb: Nruab nrab -grit sandpaper txiav txim siab "qhov yooj yim flatness" ntawm qhov kawg ntawm qhov kawg. Yog tias cov kauj ruam no tsis ua kom tiav, khawb yuav nyuaj rau zais nrog cov xuab zeb zoo.

3. Fine grain (P320-P1000+): Polished tiav los txhim kho kev ntxhib los mos

Particle yam ntxwv: Zoo, cov khoom sib npaug sib npaug tsim ib qho chaw du tom qab polishing, tawm hauv khawb tsis tshua muaj ntiav lossis txawm pom ntawm qhov muag liab qab.

Daim Ntawv Thov: - Kev polishing kawg ua ntej siv cov xim lossis ntoo siv quav ciab (xws li, ua kom zoo zoo ua ntej pleev xim rooj tog); - Ua ntej- polishing hlau nto (xws li, tshem tawm khawb los ntawm stainless hlau); - DIY nthuav dav polishing (xws li, zoo polishing ntawm ornamental walnuts thiab jade).

Kev Siv Advanced: Ultra- qhov loj me me (piv txwv li, P1500 thiab P2000) feem ntau yog siv rau kev kho cov xim tsheb thiab polishing cov cuab yeej kho qhov muag, tab sis tsis tas yuav siv rau kev siv dav dav.

 

Ⅲ. 3 cov lus qhia tswv yim los ua ob npaug rau polishing nyhuv

 

1. Kev nce qib zuj zus: Kev nce qib los ntawm ntxhib mus rau nplua grits maj mam, tsis txhob muaj qhov nruab nrab grits. Piv txwv li, thaum sanding ntoo, peb pom zoo kom xuab zeb nyob rau hauv qhov kev txiav txim ntawm "P80 → P120 → P240 → P400." Txhua lub sij hawm koj hloov grit, xuab zeb perpendicularly mus rau cov kev taw qhia ntawm yav dhau los sanding kom yooj yim dua nrhiav tau tej seem khawb.
2. Xaiv cov ntawv xuab zeb raws li cov khoom siv: Cov ntaub ntawv sib txawv yuav tsum muaj cov khoom sib txawv. Piv txwv li, siv aluminium oxide sandpaper (hnav-}resistant) rau hlau, silicon carbide sandpaper (tsawg dua los thaiv cov ntoo grain) rau ntoo, thiab daim txhuam cev sandpaper (ua raws li cov npoo nkhaus thiab tsis txhob hnav- dhau) rau cov xim pleev xim.
3. Ntxuav cov ntaub ntawv xuab zeb kom sai: Thaum lub sij hawm xuab zeb, cov khib nyiab tuaj yeem txhaws cov ntawv xuab zeb, txo cov xuab zeb efficiency thiab ua rau roughness. Tsis tu ncua ntxuav cov xuab zeb nto nrog txhuam qhuav los yog maj mam kais cov ntawv xuab zeb kom tshem tawm cov khib nyiab thiab txuas nws lub neej.

 

Tsis muaj "zoo" lossis "phem" sandpaper grit, tsuas yog "kev tsim nyog." Nco ntsoov cov ntsiab lus tseem ceeb: sib tsoo ntxhib rau kev sib tsoo, nruab nrab sib tsoo rau qib, thiab sib tsoo zoo rau polishing. Tom qab ntawd, xaiv hom ntawv xuab zeb zoo raws li cov khoom siv. Txawm hais tias koj tab tom kho cov rooj tog zaum, ua DIY crafts, los yog ua hauj lwm rau cov ntawv thov kev lag luam, koj tuaj yeem yooj yim tswj cov nyhuv polishing thiab txhawb koj cov hauj lwm mus rau qib siab dua.