Yog vim li cas thiab kev daws teeb meem rau PCB Nickel Electroplating txheej txheem ua tsis tiav

Hauv PCB pov thawj, npib tsib xee yog siv los ua cov txheej txheej substrate rau cov hlau muaj txiaj ntsig thiab cov hauv paus hlau. Rau qee qhov chaw nrog hnyav hnyav, kev siv cov npib tsib xee ua txheej txheej kub tuaj yeem txhim kho qhov hnav tsis kam. Thaum siv los ua ib qho kev thaiv, npib tsib xee muaj txiaj ntsig los tiv thaiv kev sib kis ntawm tooj liab thiab lwm yam hlau. Cov hauv qab no piav qhia txog cov laj thawj thiab kev daws teeb meem ntawm PCB nickel electroplating txheej txheem tsis ua haujlwm:

1. Hemp pits: Cov hemp pits yog tshwm sim los ntawm cov organic paug; Yog tias qhov kev ntxhov siab tsis zoo, cov npuas tsis tuaj yeem raug tshem tawm, thiab cov pits yuav raug tsim. Loj hemp pits feem ntau qhia cov roj paug, thiab tus neeg sawv cev ntub dej tuaj yeem siv los txo nws cov txiaj ntsig. Cov qhov me me hu ua pinholes. Kev tuav tsis zoo, cov hlau tsis zoo, cov ntsiab lus boric acid tsawg dhau, thiab da dej kub tsawg dhau yuav ua rau cov pinholes. Kev tu da dej thiab kev tswj cov txheej txheem yog cov yuam sij, thiab cov tshuaj tiv thaiv pinhole yuav tsum tau ntxiv ua cov txheej txheem stabilizers.

2. Roughness thiab burrs: Roughness txhais tau hais tias cov tshuaj yog qias neeg thiab kho tau los ntawm tag nrho cov pom (PH yog siab dhau los ua hydroxide nag lossis daus, uas yuav tsum tau tswj). Yog tias qhov ceev ceev tam sim no siab dhau, anode slime thiab cov dej ntxiv yog qhov cuam tshuam, ntxhib thiab burrs yuav ua rau muaj mob hnyav.

3. Kev sib khi tsis tshua muaj zog: Yog tias cov txheej tooj liab tsis yog deoxidized tag nrho, cov txheej yuav tev tawm, thiab qhov adhesion ntawm tooj liab thiab npib tsib xee yog qhov tsis zoo.

4. Cov txheej yog nkig thiab tsis zoo weldability: thaum lub txheej yog khoov los yog hnav mus rau ib qho twg, cov txheej feem ntau yog nkig. Qhov no qhia tau hais tias muaj cov organic lossis hnyav hlau ua paug, uas yuav tsum tau kho nrog cov pa roj carbon activated. Tsis tas li ntawd, qhov sib ntxiv tsis txaus thiab pH siab kuj tseem yuav cuam tshuam rau lub brittleness ntawm txheej.

5. Cov txheej yog tsaus thiab xim tsis sib xws: lub txheej yog tsaus thiab xim tsis sib xws, uas txhais tau tias muaj cov pa phem hlau. Vim tias tooj liab feem ntau yog plated ua ntej thiab tom qab ntawd nickel plated, cov tshuaj tooj liab coj los rau hauv yog qhov tseem ceeb ntawm cov pa phem. Txhawm rau tshem tawm cov kab mob hlau hauv lub tank, tshwj xeeb tshaj yog kev tshem tawm tooj liab, corrugated steel cathodes yuav tsum tau siv, nrog 5 amps ib nkas loos ntawm cov tshuaj khoob rau ib teev ntawm qhov ceev tam sim no ntawm 2 mus rau 5 amps ib square feet.

6. Txheej kub hnyiab: Cov txheej txheem tuaj yeem ua rau txheej kub hnyiab: tsis txaus boric acid, tsis tshua muaj siab ntawm cov ntsev hlau, kub ua haujlwm tsawg dhau, siab tam sim no ntom ntom, pH siab dhau lossis tsis txaus stirring.

7. Tsawg deposition tus nqi: qis PH tus nqi los yog tsawg tam sim no ceev yuav ua rau tsawg deposition npaum li cas.

8. Kev ua npuas ncauj lossis cov tev ntawm cov txheej txheem: kev ua haujlwm ua ntej npaj ua ntej, kev cuam tshuam ntau dhau lawm, kev cuam tshuam ntau dhau, thiab tsis tshua muaj kev cuam tshuam txog kev cuam tshuam rau kev cuam tshuam nrog kev tsis txaus siab .

9. Anode passivation: Lub anode activator tsis txaus, thaj tsam anode me dhau, thiab qhov ceev tam sim no siab dhau.