Lub ntsiab yog vim li cas rau txheej cov paj yog pluag ua ntej kho. Kev siv cov tshuaj tsis haum xeeb (feem ntau cov uas muaj silicates) tsis yooj yim rau pretreat lub txheej thiab yooj yim ua rau txheej rau paj ntoos.
Lwm yam ua rau muaj kev tsim kom muaj txheej txheem yuav yog qhov teeb meem ntawm tus neeg saib xyuas teeb meem. Ua ntej tshaj, nco ntsoov ua kom zoo thaum npaj cov neeg ntxhib. Tshwj xeeb tshaj yog thaum sodium dodecyl sulfate yog siv los ua ib tus neeg ntxhib ntxoo, daj thiab agglomeration siv tsis tau. Nws yog qhov zoo uas yuav ntxiv ib qho me me ntawm saccharin thaum noj cov tshuaj sodium lauryl sulfate. Nws yog qhov zoo tshaj kom ntxiv ua ntej ua haujlwm. Tsis txhob ntxiv plating. Tsis tas li ntawd, qhov nce hauv tag nrho cov ntsiab lus da dej kuj tuaj yeem ua paj.
Yog vim li cas rau qhov graying ntawm plating txheej yog tias kub ntawm lub plating kua nyhav kom nce thiab qhov phenomenon no tshwm sim. Thib ob, qib qis dua ntawm theem ob sab ci kuj tuaj yeem ua rau qhov tshwm sim no.
Plating yog brittle thiab qee zaus yuav tawg paj. Yog vim li cas yog tias cov plating tov muaj ntau theem ntawm cov hluav taws xob hlau. Thaum lub txiaj ntsim pH ntawm plating daws yog siab, cov ntsiab lus ntawm trivalent hlau nyob rau hauv lub plating kua nce, uas yog lub ntsiab yog vim li cas rau kev nce ntawm kev nyuaj siab ntawm txheej plating. Lwm qhov ua tau yog qhov nce ntawm cov ntsiab lus hlau nyob hauv da dej. Qhov kev faib ua feem ntawm cov hlau nyob hauv lub txheej. Loj-cathode electrolysis tuaj yeem siv tau rau lub sijhawm no. Raw hlau hmoov kuj tau ntxiv rau kev ua, tab sis nws yuav tsum tau lim. Lwm qhov ua tau yog tias qhov tsawg heev saccharin, qhov teeb meem ntawm lub npov yog qhov tsis txaus, thiab nws yog ib qho tseem ceeb ntxiv ntxiv saccharin