Cov txheej txheem ntawm cov tshuaj tsuag iav fwj yog cov cuab yeej niaj hnub kho kom zoo nkauj rau iav fwj. Los ntawm kev txau, cov xim yog sib npaug ntawm qhov chaw ntawm lub khob iav, ua rau nws zoo nkauj dua thiab txhim kho tus nqi muag khoom. Cia peb saib cov txheej txheem ntawm cov tshuaj tsuag iav fwj.
1. Npaj cov iav fwj thiab pleev xim. Xaiv cov iav fwj zoo yog qhov yuav tsum tau ua ua ntej ua cov tshuaj tsuag iav fwj, thiab cov xim tsim nyog yuav tsum tau xaiv raws li qhov xav tau. Feem ntau hais lus, muaj ntau yam xim xaiv los ntawm, xws li organic solvent-based, dej-based thiab hmoov-based.
2. Ua ntej kho cov iav fwj. Pretreatment yog ib kauj ruam tseem ceeb heev hauv kev txau iav fwj. Nws lub hom phiaj yog tshem tawm cov av, roj thiab impurities ntawm qhov chaw thiab xyuas kom meej qhov chaw tiav thiab adhesion. Cov kev kho ua ntej feem ntau suav nrog kev tu txhua yam, kua qaub thiab alkali tu thiab nplaim taws tu.
3. Txau cov xim. Siv cov cuab yeej siv tshuaj txau kom sib npaug ntawm cov iav fwj nrog cov xim, uas tuaj yeem txau manually lossis txiav. Cov txheej txheem sib txawv yuav tsum muaj cov txheej txheem txau thiab cov cuab yeej sib txawv kom ntseeg tau tias cov nyhuv txau.
4. Qhuav thiab kho. Cov iav fwj uas tau muab txau nrog cov xim raug xa mus rau qhov kub thiab av noo qhov cub kom qhuav thiab kho kom zoo, kom cov xim tuaj yeem qhuav thiab kho kom zoo, ua rau hnav tsis kam thiab ua haujlwm ntev ntawm cov txheej.