Xaiv txoj cai sandpaper grit yog ib qho ntawm cov kauj ruam tseem ceeb tshaj plaws hauv kev ua tiav tiav. Txawm hais tias koj tab tom ua haujlwm ntawm cov ntoo, hlau, yas, lossis cov xim pleev xim, siv cov grit kom raug pab koj tshem tawm cov khoom zoo, tsis txhob khawb, thiab txuag sijhawm.
1. Sandpaper Grit txhais li cas?
Sandpaper grit yog hais txog qhov loj ntawm cov khoom abrasive ntawm cov ntawv xuab zeb nto.
Tsawg grit tooj=ntxhib thiab ntxhib (tshem cov khoom sai)
Cov lej siab grit=zoo thiab du (siv rau kev ua tiav)
Common Grit Ranges:
| Grit Range | Hom | Lub hom phiaj |
| 60–80# | Nyias | Shaping, smoothing ntxhib nto |
| 100–150# | Nruab nrab | General sanding ua ntej ua tiav |
| 180–220# | Zoo | Thaum kawg nto smoothing |
| 240–400# | Zoo heev | Nruab nrab ntawm cov xim pleev xim los yog kua roj vanish |
| 600–2000# | Ultra-Zoo heev | Polishing, automotive xov, hlau ci |
2. Xaiv Sandpaper Grit rau qhov sib txawv
A. Ntoo nto
Ntoo yog ib qho ntawm cov khoom siv tshaj plaws rau kev xuab zeb.
Lub hom phiaj yog tshem tawm qhov tsis zoo, du cov nplej, thiab npaj qhov chaw rau staining lossis pleev xim.
Pom zoo Grits:
| Kauj ruam | Grit Range | Lub hom phiaj |
| Rough shaping | 40–60 # | Tshem tawm cov cim los yog qhov chaw tsis sib xws |
| Smoothing | 80–120# | Npaj cov ntoo nyoos kom tiav |
| Ua tiav sanding | 150–220 # | Smooth ua ntej pleev xim los yog staining |
| Nruab nrab ntawm cov tsho loj | 240–320# | Lub teeb sanding ntawm cov kua roj vanish lossis xim txheej |
B. Hlau nto
Sanding hlau pab tshem cov xeb, cov xim qub, lossis cov burrs, thiab npaj rau txheej los yog vuam.
Pom zoo Grits:
| Kauj ruam | Grit Range | Lub hom phiaj |
| Kev tshem tawm xeb / xim | 40–80# | Kev tshem tawm ntxhib |
| Nto leveling | 100–150# | Smooth thiab npaj hlau |
| Tiav & polishing | 240–600# | Rau ib tug ci los yog reflective tiav |
Tswv yim: Siv aluminium oxide lossis zirconia abrasives rau cov hlau muaj zog; silicon carbide rau polishing los yog softer hlau.
C. Automotive & Paintwork
Thaum sanding lub tsheb pleev xim los yog lub cev muab tub lim, nws yog ib qho tseem ceeb uas yuav tau xaiv txoj cai grit kom tsis txhob ua puas rau saum npoo.
Pom zoo Grits:
| Kauj ruam | Grit Range | Lub hom phiaj |
| Lub cev filler shaping | 80–120# | Qib saum npoo |
| primer sanding | 180–320# | Ua ntej pleev xim |
| Xim leveling | 400–800# | Tshem tawm qhov tsis zoo me me |
| Thaum kawg polishing | 1000–3000# | High-gloss tiav lossis ntub xuab zeb |
Tswv yim: Rau nws pib refinishing, ntub / qhuav waterproof sandpaper ua haujlwm zoo tshaj plaws.
D. Cov khoom siv yas thiab cov khoom sib xyaw
Yas thiab fiberglass tau yooj yim overheat los yog khawb, yog li ib txwm xuab zeb maj mam.
Pom zoo Grits:
| Kauj ruam | Grit Range | Lub hom phiaj |
| Pib shaping | 120–180# | Kev tshem tawm cov khoom siv lub teeb |
| Nto npaj | 220–320 # | Smooth thiab uniform tiav |
| Polishing | 400–800# | Thaum kawg ci los yog txheej prep |
E. Painted Surfaces
Thaum sanding xim los yog kua roj vanish, lub grit nyob ntawm seb koj puas xav tshem tawm cov xim qub los yog cov coatings tshiab.
Pom zoo Grits:
| Kauj ruam | Grit Range | Lub hom phiaj |
| Tshem tawm cov xim qub | 40–80# | Tshem cov txheej qub sai sai |
| Leveling primer | 120–180# | Smooth ntxhib primer nto |
| Nruab nrab ntawm cov xim pleev xim | 240–400# | Lub teeb sanding rau adhesion |
| Polishing | 600–2000# | Smooth glossy nto |
Tswv yim: Siv cov nplua grit sanding sponge los yog waterproof sandpaper rau ib tug du tiav.
Tswv yim: Tsis txhob nias nyuaj dhau - overheating tuaj yeem ua rau cov yas yaj.
Xaiv cov ntawv xuab zeb zoo nyob ntawm koj hom nto, qhov xav tau tiav, thiab theem ua haujlwm.
