Nkag siab txog yam dab tsi ntawm kev ua haujlwm yuav tsum ua ua ntej electroless nickel plating

Nkag siab txog yam dab tsi ntawm kev ua haujlwm yuav tsum ua ua ntej electroless nickel plating

1. Qhov teeb meem ntawm plating tsis kam ntawm cov khoom tsis yog plated ntawm workpieces

Ntau lub workpieces xav tau qee cov tshuaj npib tsib xee plating, yog li nws yog ib qho tsim nyog yuav tsum siv cov ntaub thaiv xim los tiv thaiv cov khoom tsis yog plated. Cov ntaub thaiv npog tuaj yeem siv nrog cov ntaub nplaum-rhiab, coatings, tshwj xeeb yas fixtures, thiab lwm yam. Tau kawg, tam sim no muaj cov khoom lag luam uas muaj cov txheej txheem tiv thaiv plating, thiab cov txheej txheem ntau dua tuaj yeem tshem tau yooj yim tom qab plating, thiab tuaj yeem rov qab siv dua. tom qab tau yaj hauv cov kuab tshuaj tshwj xeeb.

2. Tshuaj ntxuav

Immersion yog ib qho ntawm cov kauj ruam tseem ceeb ua ntej chemical plating, thiab nws txoj haujlwm tseem ceeb yog tshem cov plua plav thiab av ntawm qhov chaw ua haujlwm. Txhawm rau kom muaj txiaj ntsig zoo, cov tshuaj ntxuav tu, kev sib xyaw ua ke, thiab cua sov feem ntau yog siv. Thaum xaiv cov tshuaj ntxuav alkaline, nws yog ib qho tsim nyog kom sov lawv mus rau 60-80 degree thiaj li yuav ntxuav cov plua plav thiab av kom huv si. Feem ntau alkaline tu txoj kev txais yuav immersion thiab muaj zog sib tov, thiab tshuaj tsuag tu kuj siv tau.

3. Electrolytic tu

Txoj kev ntxuav zaum kawg ua ntej ua kom muaj zog thiab pov tseg ntawm electrolytic tu thiab tshuaj lom neeg nickel plating feem ntau yog siv rau qhov tseeb. Qhov kom zoo dua ntawm DC electrolytic tu, tseem hu ua resistive electrode electrolytic tu, yog tias qhov chaw ntawm lub workpiece generates ib tug ntau ntawm hydrogen gas, uas ua rau kom cov nyhuv tu; Nws qhov tsis xws luag yog nyob rau hauv qhov tsis zoo ntawm lub workpiece, uas adsorbs tooj liab, zinc, thiab lwm yam hlau ions, xab npum, thiab tej yam colloidal tshuaj nyob rau hauv cov tshuaj ntxuav, tsim ib tug xoob electrode av nkos ntawm lub workpiece, ua rau nws nqa mus. Thaum lub sij hawm ntxuav electrolytic, kev txhaj tshuaj tiv thaiv ib ntus yog siv. Thaum lub workpiece yog anode, nws yuam kom zoo ions thiab plua plav ntawm qhov chaw ntawm lub workpiece kom tshem tawm. Tsis tas li ntawd, cov pa oxygen tsim tawm ntawm qhov chaw ua haujlwm yog qhov tsim nyog rau kev ntxuav cov plua plav thiab cov nplai hauv qhov chaw ua haujlwm, tshem tawm cov plua plav ntub dej thiab nplai los ntawm tus neeg saib xyuas hauv cov tshuaj ntxuav, thiab emulsifying thiab hloov cov plua plav thiab nplai.

4. Kev ntxuav dej

Cov txheej txheem ntxuav dej ntawm ob txoj kev kho ua ntej lub hom phiaj los tiv thaiv cov kev daws teeb meem los ntawm cov txheej txheem dhau los los ntawm kev sib kis cov tshuaj hauv cov txheej txheem tom ntej, thiab tshem tawm cov plua plav, hlau ion muaj kuab paug, thiab electrode av nkos los ntawm qhov chaw ntawm lub workpiece kom paub meej. tias qhov adhesion ntawm txheej yog tsim nyog. Nws yog ib qho tseem ceeb los npaj cov txheej txheem zoo ntws thiab xyuas kom zoo ntawm cov txheej txheem ntxuav. Nws yog ib qho tseem ceeb kom tsis txhob sib koom rinsing, uas yog, rov qab mus rau lub tank yav tas los siv rau rinsing.

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