Electrophoretic txheejyog tib yam li lwm cov txheej txheem txheej. Cov khoom coated yuav tsum tau kho saum npoo ua ntej txheej. Kev kho saum npoo yog ib qho haujlwm tseem ceeb uas yuav tsum tau ua ua ntej txheej txheej. Cov txheej txheem sib txawv, cov ntaub ntawv sib txawv thiab lawv cov txheej txheem saum npoo, yog li Cov txheej txheem kev kho deg uas yuav tsum tau ua thiab cov txheej txheem tsis zoo ib yam. Tsis tsuas yog ua cov txheej txheem kev kho deg sib txawv thiab kev kho mob zoo cuam tshuam rau cov txheej txheem zoo, tab sis kuj yog tus nqi kho mob saum npoo muaj kev cuam tshuam ntau dua. Yog li ntawd, thaum peb ua raws li kev tsim qauv, peb yuav tsum Cov txheej txheem installation, cov khoom siv thiab lub xeev ntawm cov txheej txheem coated, thiab cov txheej txheem kho deg thiab cov txheej txheem nrog kev muaj zog, kev kho mob zoo thiab tus nqi qis yuav tsum tau xaiv ntau li ntau tau. .
Vim li cas electrophoresis muaj txheej txheem pretreatment?
Nyob rau hauv cov txheej txheem pretreatment ntawm electrophoresis, muaj kev sib koom tes ntawm degreasing, xeb tshem tawm, phosphating, nto kho thiab lwm yam txheej txheem. Nws tuaj yeem hais tias pretreatment yog qhov tseem ceeb hauv cov txheej txheem electrophoretic, uas cuam tshuam rau kev ruaj ntseg ntawm cov xim electrophoretic da dej tom qab electrophoresis thiab qhov zoo ntawm txheej zaj duab xis ntawm lub workpiece.
Txhawm rau kom tau txais cov kav ntev thiab corrosion tsis kam ntawm txheej zaj duab xis ntawm electrophoretic workpiece, phosphating kev kho mob yog siv los ua pretreatment ntawm txheej. Phosphating kev kho mob (tseem hu ua phosphate chemical treatment) yog (phosphating zaj duab xis) thev naus laus zis uas siv cov kev sib cais (sib npaug) cov tshuaj tiv thaiv ntawm phosphoric acid kom precipitate insoluble phosphate hlau ntsev rau ntawm qhov chaw ntawm cov hlau ntxuav (degreased) hlau substrates. Lub luag haujlwm ntawm phosphating zaj duab xis yog txhawm rau txhim kho qhov adhesion thiab corrosion kuj ntawm txheej zaj duab xis (electrophoretic txheej) thov rau nws.
Hais txog adhesion, cov muaju ntawm cov phosphide zaj duab xis tau me ntsis yaj mus rau hauv cov hlau nto, thiab cov adhesion ntawm cov muaju yog qhov zoo. Tsis tas li ntawd, qhov chaw saum npoo yog nce vim qhov tsis sib xws ntawm ntau cov muaju, thiab cov adhesion ntawm txheej zaj duab xis yog txhim kho. Tom qab ntawd, nrog kev txhim kho ntawm adhesion ntawm txheej zaj duab xis, qhov kev nkag mus ntawm cov khoom tsim los tiv thaiv corrosion, thiab kev txhim kho corrosion (tshwj xeeb tshaj yog kev nthuav dav corrosion nyob rau hauv cov xim zaj duab xis tuaj yeem tiv thaiv).
Cov txheej yuav hlwv thiab xeb nyob rau lub sijhawm luv luv yam tsis muaj phosphating. Cov dej thiab huab cua dhau los ntawm cov txheej txheej zaj duab xis ncav cuag qhov chaw ntawm lub workpiece los ua cov xeb liab thiab o ntawm cov xim pleev xim. Cov dej thiab huab cua dhau los ntawm cov txheej txheej zaj duab xis ncav cuag cov ntawv hlau galvanized los ua cov xeb dawb, uas kuj cuam tshuam nrog cov zaj duab xis txheej los ua cov xab npum hlau. Ob peb zaug loj dua, kom cov zaj duab xis txheej yog ntau zog puffed. Phosphating zaj duab xis yog ib zaj duab xis insoluble tsim ntawm cov hlau nto los ntawm cov tshuaj tiv thaiv. Vim nws zoo adhesion (lub cev) thiab tshuaj stability, nws yog kho raws li ib tug ruaj ruaj anti-xeb txheej substrate.
Yuav kom tau txais ib qho zoo heev thiab ruaj khov phosphating zaj duab xis thiab xyuas kom meej nws adhesion thiab corrosion kuj, kev tswj ntawm pretreatment yog ib qho 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.
Lub sij hawm xa tuaj: Plaub Hlis-08-2022
