Qhov zoo ntawm cov xim thiab cov kua roj vanish yog nyob ntawm kev npaj ntawm cov ntoo saum npoo. Ua ntej qhov kawg kev kho mob, cov av noo yuav tsum raug kuaj xyuas, qhov chaw yuav tsum tau ntxuav kom zoo, qhov tsis sib xws yuav tsum tau ntim thiab cov plua plav yuav tsum tau muab tshem tawm.
Ntoo ya raws ua ntej ua tiav
Ntoo yuav tsum tau pleev xim rau yuav tsum tau qhuav mus rau ib tug humidity ntawm 10–12%, thaum ntoo yuav varnished thiab polished yuav tsum tau qhuav rau 8%.
Ntawm cov ntoo saum npoo av nrog cov av noo siab, los ntawm 20 mus rau 30%, cov xim thiab cov kua roj vanish txheej tau txais tsis zoo thiab hnav sai sai. Yog vim li cas yog tias thaum ziab, qhov ntev ntawm cov ntoo txo qis hauv cov lus qhia radial thiab tangential, thaum lawv nce thaum ntub dej.
Yog hais tias qhov ntev ntawm cov ntoo hloov nyob rau hauv cov kev txwv loj, lub elasticity ntawm cov xim thiab cov kua roj vanish yuav tsis txaus. Thaum ntoo dries, txheej txheej wrinkles thiab tev, thiab thaum nws ntub, nws cais tawm ntawm ntoo los yog kua muag nyob rau hauv ob peb qhov chaw.
Kev npaj, sib tsoo thiab kev huv huv
Lub nto yog npaj raws li hom tiav:
Ntawm cov ntxaij vab tshaus, luag lub rooj kab rov tav kom pom txhua kab.
| Final processing | Planing | Sib tsoo | Cleanliness Class |
|---|---|---|---|
| Opaque coatings | wavelength 4–2,5 mm | Sanding ntawv 120 | VI or VII |
| Painting | wavelength mus txog 2 mm | Sanding ntawv 120–140 | VIII or IX |
| Polishing nrog shellac polish | Wavelength mus txog1 mm, ces ib tug hlau - ib tug cycling tshuab | Xuab zeb140-170 | X |
Cov ntoo uas yog coated nrog cov ntaub ntawv pleev xim uas tsim cov opaque scrum yog thawj zaug ua tiav ntawm cov phiaj xwm, thiab tom qab ntawd sanded rau hauv chav kawm ntawm kev huv.
Filling pob
Ua ntej pleev xim, txhua qhov tsis sib xws ntawm qhov chaw, nrog rau cov pob qhov rooj, khawb thiab cov nicks, yuav tsum tau ua kom zoo thiab ua tiav.
Lub qhov los ntawm cov nodes poob yuav tsum tau ntsaws kom cov kev taw qhia ntawm cov fibers ntawm lub plug coincides nrog rau cov kev taw qhia ntawm fibers ntawm lub caij.
Moistening thiab zaum kawg sanding
Ua ntej polishing thiab varnishing, saum npoo ntawm ntoo yuav tsum tau moistened me ntsis nrog dej. Tom qab2-3Tom qab ziab, qhov saum npoo yog smoothed nrog sandpaper170-200muab tso rau ntawm softwood lev ntawm qhov ntev100×100 mm.
Sib tsoo yog ua raws li cov nplej ntawm cov ntoo nrog txawm txav. Tom qab xuab zeb, cov khoom los yog cov khoom yuav tsum tau txhuam nrog ib daim ntaub mos thiab cov plua plav yuav tsum tau ntxuav nrog txhuam.
Priming thiab filling
Ua ntej siv cov xim thiab cov kua roj vanish uas tsim opaque coatings, ntoo yog primed nrog roj los yog lwm yam primer. Yog tias tsim nyog, tom qab ntawd hauv zos puttying lossis puttying ntawm tag nrho saum npoo yog ua.
Grund yuav tsum:
- kaw qhov pores;
- khi cov txheej nrog ntoo;
- txhim kho txheej adhesion.
Cov xim ntawm cov primer thiab muab tub lim yuav tsum phim cov xim uas cov khoom yuav pleev xim rau.
Thaum varnishing thiab polishing, priming yog ua tiav nrog cov pob tshab tshwj xeeb primers lossis diluted varnishes thiab polishes uas yuav siv rau kev ua tiav. Piv txwv li, rau kev kho mob zoo nrog shellac polish, ntoo nto yog primed nrog 10% shellac polish.