Etched iav txhais
Etched iav yog etched siv ib qho etchant (hydrofluoric acid). Muaj ib phau ntawv los sis qauv, qauv ntawm etching iav ua kom zoo nkauj, zoo, yog ib qho khoom siv zoo nkauj ntawm cov khoom iav.
Etching iav ntau lawm txoj kev:
Thawj kauj ruam: lub iav kom muab engraved; ntxuav thiab qhuav, coated nrog gasoline yaj nyob rau hauv cov tshuaj tiv thaiv paraffin raws li ib tug tiv thaiv txheej txheem, nyob rau hauv lub kho paraffin txheej carved tawm cov ntawv nyeem los yog qauv. Carving, koj yuav tsum tau ntim cov txheej txheej tawm, kom cov iav pom
Cov kauj ruam thib ob: Muab cov tshuaj hydrofluoric acid rau hauv cov ntawv nyeem lossis qauv ntawm cov iav tshwm sim. Raws li qhov tob ntawm tus qauv uas yuav tsum tau tswj kom muaj kev txhuam cov sijhawm tom qab lub sijhawm, nrog dej sov so ntxuav paraffin thiab hydrofluoric acid, koj tuaj yeem tau txais ib qho qauv zoo nkauj ntawm iav.
