Nws paub zoo tias vim tias cov tshuaj lom neeg cov khoom siv ntawm NdFeB-NdFeB cov khoom siv hlau nplaum yog qhov nquag thiab yooj yim oxidized, lawv cov khoom yuav tsum yog electroplated. Txawm li cas los xij, qhov zoo tshaj ntawm cov roj electroplating yog ze ze rau nws ua ntej. Qhov txheej txheem pretreatment no feem ntau suav nrog cov txheej txheem xws li degreasing, derusting thiab qhib kom ua haujlwm. Yog tias muaj cov txheej txheem hauv cov txheej txheem ua ntej uas tsis huv no, nws yuav coj cov khoom tsis raug rau cov khoom siv electroplating, uas ua rau muaj tshwm sim ntawm ua npuas, ua kom zoo, thiab tev tawm. Yog hais tias cov khoom siv hlau nplaum ruaj khov ib feem nrog cov kab mob latent yog siv rau cov khoom siv, nws yuav ua rau tag nrho lub tshuab ua haujlwm tsis ua haujlwm vim qhov tsis ua haujlwm ntawm qhov tsis muaj qhov ntsuas tsis zoo. Txawm ua rau muaj kev nyuaj siab.
Cov khoom siv hlau nplaum NdFeB NdFeB tsis ntom nti rau cov khoom siv hlau, thiab yog cov khoom siv microporous. Nws cov porosity coj ntau yam nyuaj thiab teeb meem rau kev kho ua ntej plating. Ntxiv rau kev tshem tawm cov alkaline, acidic tshuaj thiab av ua tswvcuab los ntawm tus txheej txheem, nws tseem tsim nyog los xav txog yuav ua li cas thiaj tshem tau cov av hauv micropores.
Rau qib qis cov khoom siv hlau nplaum tsis tu ncua uas tsis niaj zaus siv, cov txheej txheem txheej txheem uas tau siv yav dhau los yog: alkaline degreasing-ntxuav-pickling-ntxuav-tsos-ua kom zoo-plating. Txawm hais tias cov txheej txheem yooj yim, nws muaj qhov xav tau siab ntawm qhov zo tshauv. Nws yog qhov tsim nyog los siv cov khoom siv degreaser rau cov hlau nplaum NdFeBN-iron-boron. Cov mis ntawm degreaser yog qhov nyuaj, thiab cov khoom tsim nyog muaj ntau yam. Cov txheej txheem tshwj xeeb yog cov teeb meem.
Cov teeb meem no tau daws txij li lub sijhawm muaj hluav taws xob ntau ultrasonic cov tshuab ua kom huv hauv chaw tsim khoom. Lub txiaj ntsig cavitation tshwj xeeb ntawm kev tu ultrasonic tuaj yeem ua rau cov alkaline thiab acidic ntxiv nyob hauv cov micropores ntawm cov khoom siv hlau nplaum tas mus li zoo dua tshem tawm!
