Electrophoretic txheej yog txheej txheej thev naus laus zis uas siv lub tshuab hluav taws xob los coj kev tsiv teb tsaws ntawm txheej txheej mus rau ntawm qhov chaw ua haujlwm, qhov chaw uas lawv tau tso thiab kho kom tsim tau ib zaj duab xis tas mus li. Txoj kev no yog siv dav hauv kev lag luam tsis yog vim nws kov yeej cov kev txwv ntawm cov tshuaj tsuag ib txwm nyob rau hauv cov nqe lus ntawm kev pab them nqi tuag zones thiab thickness fluctuations, tab sis kuj vim hais tias nws muaj peev xwm ib txhij muab kev tiv thaiv thiab kho kom zoo nkauj, tuav ruaj khov zoo nyob rau hauv loj ntau lawm.
Thawj kauj ruam hauv kev siv electrophoretic txheej yog pretreatment, ib kauj ruam tseem ceeb los xyuas kom meej zaj duab xis zoo. Lub workpiece yuav tsum tau degreased kom tshem tawm cov roj saum npoo av thiab cov khoom tsis huv, ua raws li kev ntxuav kom tshem tawm cov tshuaj ntxuav cov seem. Tom qab ntawd, kev kho cov txheej txheem hloov pauv, xws li phosphating lossis passivation, yog ua los tsim cov pob zeb zoo lossis cov oxide txheej ntawm cov hlau nto, txhim kho txheej adhesion thiab corrosion kuj. Kev huv thiab kev tsis sib xws ntawm pretreatment ncaj qha txiav txim siab cov nyhuv ntawm electrophoretic deposition tom ntej; tej impurities los yog zaj duab xis tsis xws luag yuav ua rau lub zos blistering los yog tev.
Thaum lub sij hawm electrophoresis txheej txheem, lub workpiece yog txuas nrog lub Circuit Court nrog lub polarity teeb. Resin hais nrog cov nqi sib txawv hauv chav da dej txav mus rau ntawm qhov chaw ua haujlwm thiab tso nyiaj hauv qab tsav ntawm DC hluav taws xob. Anodic electrophoresis yog tsim rau daim ntaub ntawv uas tsis tshua muaj corrosion kuj yuav tsum tau thiab tus nqi rhiab heev; lub workpiece txuas nrog rau qhov zoo electrode, thiab tsis zoo them resin hais tso rau nws. Cathodic electrophoresis, ntawm qhov tod tes, siv cov khoom siv hluav taws xob zoo los tsim cov yeeb yaj kiab thaum lub workpiece txuas nrog qhov tsis zoo electrode, ib txhij inhibiting kev sib cais ntawm cov hlau matrix thiab muab kev tiv thaiv corrosion zoo dua, ua rau nws yog qhov kev xaiv tseem ceeb hauv tsheb thiab hnyav -cov haujlwm tiv thaiv corrosion. Qhov kub, pH tus nqi, conductivity, thiab cov ntsiab lus ntawm cov dej hauv da dej yuav tsum tau saib xyuas nruj me ntsis kom ntseeg tau tias qhov tso tawm tas li thiab cov yeeb yaj kiab zoo.
Tom qab deposition, lub workpiece nkag mus rau hauv lub rinsing theem. Multi-theem ntws dej huv ntxuav tawm cov xim tsis huv los ntawm qhov chaw ua haujlwm, tiv thaiv kev nthuav tawm ntawm impurities thiab txo cov kab mob da dej. Qhov zoo ntawm cov dej yaug thiab lub sij hawm yaug yuav tsum tau tswj kom zoo kom tsis txhob yaug ntau dhau uas ua rau cov yeeb yaj kiab tsis txaus lossis tshem tawm cov yeeb yaj kiab zoo - tsim cov tshuaj. Tom qab ntawd, ci thiab kho tau ua tiav, siv cov cua sov los txhawb tus ntoo khaub lig- sib txuas cov tshuaj tiv thaiv hauv cov resin, hloov nws los ntawm cov kua lossis ib nrab- cov khoom hauv lub xeev mus rau hauv cov yeeb yaj kiab uas muaj zog thiab tsis tu ncua. Lub curing kub thiab lub sij hawm nyob ntawm seb lub resin system. Cov pa epoxy lossis acrylic resins feem ntau kho tau ntawm thaj tsam 180 degrees Celsius rau ntau kaum feeb. Txoj kev loj hlob ntawm tsawg-kub curing thev naus laus zis kuj tau ua kom muaj cua sov-sensitive substrates kom tau txais txiaj ntsig.
Qhov zoo ntawm txoj kev no yog nyob rau hauv nws lub peev xwm los ua kom tiav cov kev pab them nqi ntawm cov txheej txheem nyuaj, kev siv cov txheej txheem siab, thiab tsawg heev overspray, uas muaj txiaj ntsig zoo rau kev tiv thaiv ib puag ncig thiab kev tswj hwm tus nqi. Ua ke nrog automated conveying thiab kev saib xyuas online, cov yeeb yaj kiab tuab tuab thiab kev ua haujlwm ruaj khov tuaj yeem khaws cia thaum lub sijhawm ua haujlwm tas mus li. Rau qhov sib txawv substrates thiab daim ntawv thov yuav tsum tau, qhov kev tiv thaiv qib thiab zoo li yuav hloov tau los ntawm kev kho qhov voltage, electrophoresis lub sij hawm, thiab da dej formulation. Txoj kev loj hlob ntawm cov tshuab ua haujlwm electrophoretic tau ntxiv rau txoj kev no nrog cov khoom tshwj xeeb xws li pob zeb cuam tshuam tsis kam, huab cua tsis kam, thiab kev ua haujlwm, nthuav nws cov kev siv tau hauv thaj chaw xws li lub zog tshiab thiab kev tsheb nqaj hlau.
Zuag qhia tag nrho, electrophoretic txheej yog ua tiav cov txheej txheem sib txuas ua ke electrochemical deposition, nruj pretreatment, thiab meej curing. Nrog rau cov yeeb yaj kiab tsim thiab kev tiv thaiv zoo raws li nws cov tub ntxhais kawm, ntxiv los ntawm kev tswj hwm kev tswj hwm thiab cov yam ntxwv ntawm ib puag ncig, nws muab cov txheej txheem txhim khu kev qha thiab scalable txheej rau kev tsim khoom niaj hnub, ua tiav qhov sib npaug ntawm qhov zoo thiab kev ua haujlwm hauv ntau yam xwm txheej.
