Qhov zoo ntawm hauv av yog qhov tseem ceeb rau kev pleev xim: ruaj ruaj thiab ywj, nws tso cai rau cov kws ua yeeb yam tsis tsuas yog ua haujlwm nrog kev lom zem, tab sis kuj khaws nws txoj haujlwm tau ntau xyoo. Txhawm rau ua thawj daim cardboard kom zoo, nws yog ib qho tseem ceeb uas yuav tsum coj mus rau hauv nws cov khoom thiab qhov tshwj xeeb ntawm av.
Nws yog qhov tsim nyog
- - daim ntawv;
- - ntoo kua nplaum;
- - roj dawb / chalk;
- - ntawv txhuam ntoo;
- - PVA kua nplaum;
- - txhuam raj nplaim / txhav txhav.
Cov Lus Qhia
Kauj ruam 1
Nrhiav cov duab los qhia kom tsim nyog rau koj kev ua haujlwm. Rau kev qhia ntxiv, nws yog ib qho tseem ceeb uas yuav tsum xaiv txoj kev uas coj mus rau hauv qhov zoo ntawm qhov khoom ntawd. Nws ncaj qha nyob ntawm cov khoom siv los ntawm kev uas ua cov duab los qhia. Piv txwv li, grey rag board muaj qhov zoo elasticity thiab ntom, thaum pawg ntoo feem ntau yog xim dawb lossis daj hauv cov xim, thiab nws yog xim heev. Thov nco ntsoov tias lub hnub ci yuav ploj mus grey cardboard thiab daj duab los qhia. Yog li no, whitewash thiab chalk yog siv rau hauv priming. Feem ntau, cov kws ua yeeb yam xaiv cov khoom zoo tshaj plaws ntawm khaub hlab lossis ntoo pawg, tuab li 3-5 hli tuab. Nws tsis rot lossis nrib pleb.
Kauj ruam 2
Nco ntsoov muab cov av kom zoo txaus. Primer yog thawj lub tsho tiv no uas tau siv rau cov khoom pleev xim thiab zaum ncaj qha rau hauv qab xim. Lub zog thiab hloov tau, nws kaw lub qhov hws ntawm cov duab los qhia, muab cov khaub ncaws ntom ntom thiab lub ntsej muag kom ntxaws, uas, nyeg, ua kom pom cov nplaum kom zoo rau txheej xim ntawm cov xim tha xim. Yog li nws yuav zoo khaws cia, nws yuav tiv tawm rau kev cuam tshuam ib puag ncig.
Kauj ruam 3
Siv cov kua nplaum ntoo rau cov thawj cov thawj pawg. Ntau tus kws ua yeeb yam pleev xim rau daim pib ntawm lawv tus kheej siv cov hom pib lawv siv ntawm cov canvas. Piv txwv li, zaum daim npav duab nrog cov roj (cov roj linseed) thiab cia daim ntawv qhuav li 2-3 lub lis piam. Tom qab ntawd npog hauv ib lossis ob lub tsho tiv no nrog cov roj dawb thiab ua kom qhuav. Maj mam muaj cov xuab zeb hauv av. Cov duab los qhia ua txoj hauv kev no tsis ua kom yuag, nws yog qhov ua kom zoo siab rau nws, cov xim pleev xim tau pw thiab tsis thim ntawm cov sijhawm.
Kauj ruam 4
Sim ua daim npav xim pib nrog PVA emulsion, uas yuav tsum tau npaj los ntawm kua nplaum thiab dej hauv qhov sib piv ntawm 1:10 lossis 1:15. Siv lub ntsej muag pleev daim duab ntsej muag ib zaug lossis ob zaug, qhuav, thiab tom qab ntawd ua thawj. Qhov loj rau cov txheej txheem suav nrog 1 qhov hnyav ntawm PVA, 2 - 4 qhov hnyav ntawm cov dej, 3/4 qhov nyhav ib feem ntawm qhuav zinc oxide thiab 3/4 nyhav ib feem ntawm chalk. Siv nws rau daim ntawv pleev xim ib zaug kom tusyees siv lub raj nplaim los sis txhuam kom tus. Cia cov av qhuav rau 1-2 hnub. Tom qab ntawd npog koj cov ntawv tuab qhia lub hauv paus nrog ib txheej thib ob, rau kev npaj ntawm qhov koj yuav xav tau: 1 ntu los ntawm qhov hnyav ntawm gelatin; 15-17 ntu los ntawm hnyav ntawm dej; 0, 4 nyhav ib feem ntawm PVA; 2 ntu ntawm qhov hnyav nyhav zinc oxide; 2 qhov los ntawm hnyav ntawm xaum. Thiab koj kuj yuav tsum tau yuav ib qho tshuaj tua kab mob - sodium pentachlorophenolate, uas yog 0.01 ntu los ntawm qhov hnyav hauv qhov sib xyaw. Xws li qhov loj heev tau npaj thaum priming hom kab xev.
Kauj ruam 5
Txhawm rau tiv thaiv daim npav los ntawm kev ua kom ntog, tshaj nws rau ntawm ob sab. Sab nraub qaum yog feem ntau them nrog txheej nyias nyias ntawm ntuj beeswax, uas yav dhau los tau yaj hauv turpentine ntawm qhov kub txog 40-50 ° C. Cov tshuaj quav ciab no thov pleev nrog lub tshuab raj. Nws tseem tuaj yeem tso rau ib qho kev daws teeb meem ntawm PVA kua nplaum hauv qhov sib piv ntawm 1:10.
