Yuav ua li cas ua kom plating ntawm cov tsis tsim nyog nickel plating txheej rau hluav taws xob cua sov raj

Yuav ua li cas ua kom plating ntawm cov tsis tsim nyog nickel plating txheej rau hluav taws xob cua sov raj

Vim muaj ntau yam laj thawj, qhov zoo ntawm cov nickel plating txheej yuav ntau dua los yog tsawg dua tsis tsim nyog. Yog tias cov kev daws teeb meem zoo tuaj yeem ua tau, kev plating ntau dhau thiab kho tuaj yeem raug txo. Ntxiv nrog rau polishing thiab kho qhov npub thiab burrs ntawm txheej, nws kuj yog ib txoj hauv kev los kho cov khoom uas nyuaj rau polish los yog tau nthuav tawm cov substrate tom qab polishing.

Nickel plating yog yooj yim heev rau passivate, tshwj xeeb tshaj yog nyob rau hauv huab cua thiab alkaline daws. Yog li ntawd, tus yuam sij rau kev kho kom zoo plating ntawm cov npib tsib xee txheej yog los qhib cov txheej txheej ntawm cov nickel txheej. Tsuas yog thaum txheej txheej txheej ntawm nickel txheej nyob rau hauv lub xeev ua kom zoo tuaj yeem lav qhov ua tiav ntawm kev kho plating.

Txhawm rau ua kom zoo zoo plating, ntau txoj kev yuav tsum tau xaiv raws li cov khoom, cov duab, thiab cov kev qhia tshwj xeeb ntawm qhov chaw. Piv txwv li, yog tias nws tsim nyog rau cov kua qaub tooj liab plating, tooj liab lossis npib tsib xee plating tuaj yeem ua ncaj qha yam tsis muaj hlau rau cov substrate tom qab ua kom nto. Yog tias nws tsis haum rau cov kua qaub tooj liab plating lossis nthuav tawm cov hlau rau hauv lub substrate, nickel plating yuav tsum tau ua ncaj qha tom qab ua kom nto.

Cov txheej txheem tshwj xeeb yog raws li hauv qab no: ua kev kho chromium tshem tawm ntawm qhov chaw uas tau plated nrog chromium, tshem tawm cov khoom nrog cov hlwv los yog tev ntawm txheej, thiab xaiv cov hauv qab no raws li cov xwm txheej tshwj xeeb ntawm cov khoom.

(1) Haum rau tooj liab thiab npib tsib xee plating: degreasing (siv txoj kev tshuaj), ntxuav, dej pov, txhuam (qhov loj), concentrated hydrochloric acid ua kom, ntxuav, dilute sulfuric acid etching, acid tooj liab plating, tu, dilute sulfuric acid etching , npib tsib xee plating, tu, chromium plating, tu (recycling), ziab, thiab tshuaj xyuas.

(2) Tsim nyog rau nickel plating: degreasing (siv cov txheej txheem tshuaj), ntxuav, dej pov, txhuam (qhov loj), concentrated hydrochloric acid activation, ntxuav, npib tsib xee plating, ntxuav, chromium plating, tu (recycling), ziab, thiab tshuaj xyuas .

(3) Kev siv electro polishing ua kom txoj kev tuaj yeem ua tiav cov txiaj ntsig zoo. Formula thiab txheej txheem tsis ntawm hluav taws xob polishing ua kom txoj kev:

Muaj sulfuric acid (density: l849 / mL), saib "Kev Npaj" rau cov tshuaj chromic anhydride 509 / L thiab glycerol 509 / L

Kev daws ceev: 1.58-1.629/mL, kub: chav tsev kub

Anode tam sim no ceev 1-10A/dm2, lub sij hawm 3-5 vib nas this

1. Kev npaj cov tshuaj: Ua ntej, txhaj 2/3 ntim ntawm concentrated sulfuric acid (density l849/mL) rau hauv lub tank txhuas (los yog ceramic tank, yas tank), thiab ntxiv 509 glycerol rau txhua liter ntawm concentrated sulfuric acid. Dissolve chromic acid (Cr0.) nyob rau hauv lwm lub tank (los yog ceramic tank, yas tank) nrog dej me ntsis. Tus nqi ntawm chromic acid yog 509 ib liter ntawm sulfuric acid. Tom qab ntawd, maj mam ntxiv cov concentrated sulfuric acid tov nrog glycerol rau cov tshuaj chromic acid, thiab ceev faj thaum ntxiv nws. Ntxiv nws ob peb zaug raws li cov tshuaj ntxiv, Cov electrolyte pib cua sov thiab ua phem tso pa tawm. Txhua qhov sib ntxiv ntawm sulfuric acid sib xyaw uas muaj glycerol yuav tsum tau ua kom nrawm nrawm, thiab nws yuav tsum tau ua tom qab lub sijhawm kawg ntawm cov nag lossis daus. Qhov ceev ntawm cov tshuaj tom qab kev npaj yuav tsum yog 1.58-1.629/mL. Txias cov tshuaj rau 30 degree, siv lub phaj txhuas ua cov cathode thiab cov phaj npib tsib xee ua cov anode, thiab ua cov kev kho electrolysis. Qhov hluav taws xob electrolysis yuav tsum tsis pub tsawg dua 10V kom txog thaum cov tshuaj muaj l09 / L nickel ions, uas feem ntau yog li 25min hauv lub sijhawm.

2. Tsis tsim nyog tooj liab, npib tsib xee, thiab chromium plating txheej txheem ntws: sab saum toj dai fixture - tu - hluav taws xob polishing ua kom - ntxuav - soaking nyob rau hauv dilute hydrochloric acid - ntxuav - pre plating - soaking nyob rau hauv dilute sulfuric acid - tu - npib tsib xee plating - tu - kub dej - dai fixture - ziab - tshuaj xyuas - tu - chromium plating - tu - dej kub - dai fixture - ziab - tshuaj xyuas.

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