Zoo li lwm cov txheej txheem txheej, electrophoretic txheej yuav tsum tau kho saum npoo ua ntej txheej. Kev kho saum npoo yog ib txoj haujlwm tseem ceeb uas yuav tsum tau ua ua ntej txheej txheej. Cov txheej txheem txheej txheem sib txawv, cov khoom siv, thiab cov txheej txheem saum npoo yuav tsum tau siv cov txheej txheem thiab cov txheej txheem sib txawv. Cov txheej txheem kev kho deg sib txawv thiab kev kho mob zoo tsis yog tsuas yog cuam tshuam rau cov txheej txheem zoo, tab sis kuj muaj kev cuam tshuam ntau dua rau cov nqi kho mob saum npoo. Nyob rau hauv cov txheej txheem ntawm kev tsim, peb yuav tsum xaiv cov kev pab cuam kho deg thiab cov txheej txheem uas muaj zog pertinence, zoo kev kho mob nyhuv, thiab tus nqi qis npaum li sai tau raws li cov txheej txheem txheej, txheej cov ntaub ntawv, thiab deg tej yam kev mob.
Nyob rau hauv cov txheej txheem pretreatment ntawm electrophoresis, cov txheej txheem ntawm cov roj tshem tawm, xeb tshem tawm, phosphating, thiab kev kho qhov chaw yog sib koom ua ke. Nws tuaj yeem hais tias kev kho mob ua ntej yog qhov tseem ceeb hauv cov txheej txheem electrophoretic, raws li nws muaj feem xyuam rau kev ruaj ntseg ntawm cov xim electrophoretic da dej tom qab electrophoresis thiab qhov zoo ntawm cov txheej txheej ntawm lub workpiece.
Electrophoretic kev kho mob siv phosphating kev kho mob ua ntej kev kho mob rau lub durability thiab corrosion kuj ntawm coatings ntawm electrophoretic workpieces. Phosphating kev kho mob (tseem hu ua phosphate chemical treatment) yog ib qho txheej txheem uas siv cov tshuaj sib cais (equilibrium) cov tshuaj tiv thaiv ntawm phosphoric acid rau precipitate insoluble phosphate hlau ntsev (phosphating films) ntawm qhov chaw huv (degreased) hlau substrates. Lub luag haujlwm ntawm phosphating zaj duab xis yog los txhim kho qhov adhesion thiab corrosion kuj ntawm nws txheej (electrophoretic txheej).
Hais txog adhesion, vim lub fact tias cov npaj phosphate zaj duab xis muaju yog me ntsis soluble ntawm cov hlau nto, siv lead ua adhesion yog zoo. Tsis tas li ntawd, vim muaj ntau qhov tsis sib xws ntawm qhov chaw thiab qhov chaw ntawm cov siv lead ua, qhov adhesion ntawm txheej yog txhim kho. Tom qab ntawd, raws li qhov adhesion ntawm cov txheej txheej nce, nws tuaj yeem tiv thaiv kev cuam tshuam ntawm cov khoom corrosive, yog li txhim kho nws cov corrosion kuj (tshwj xeeb tshaj yog tiv thaiv kev nthuav dav hauv qab xim zaj duab xis).
Coatings tsis muaj phosphating kev kho mob yuav npuas thiab xeb nyob rau hauv ib lub sij hawm luv luv. Cov dej thiab cua dhau los ntawm cov yeeb yaj kiab tsim cov xeb liab ntawm qhov chaw ua haujlwm, ua rau cov xim zaj duab xis protrude. Cov huab cua thiab dej dhau los ntawm zaj duab xis ncav cuag lub galvanized steel phaj, ua dawb xeb, uas kuj reacts nrog zaj duab xis los ua hlau xab npum. Nws lub ntim nce ntau zaus, ua rau cov yeeb yaj kiab zoo tshaj plaws. Phosphating zaj duab xis yog ib zaj duab xis insoluble tsim nyob rau saum npoo ntawm cov hlau los ntawm cov tshuaj tiv thaiv. Vim nws zoo heev adhesion (lub cev) thiab tshuaj stability, nws yog siv raws li ib tug substrate rau check anti xeb coatings.
Txhawm rau kom tau txais cov yeeb yaj kiab zoo tshaj plaws thiab ruaj khov phosphating, xyuas kom nws cov adhesion thiab corrosion kuj, kev tswj xyuas ua ntej yog qhov tseem ceeb heev. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog yuav tsum muaj kev nkag siab zoo ntawm cov tshuaj tiv thaiv txheej txheem thiab cov ntsiab lus ntawm phosphating kev kho mob.
