Cov nyhuv ntawm Coarsening Cheebtsam nyob rau hauv yas Electroplating ntawm hluav taws xob cua sov raj

Cov nyhuv ntawm Coarsening Cheebtsam nyob rau hauv yas Electroplating ntawm hluav taws xob cua sov raj

1, Lub hom phiaj ntawm coarsening:

1. Ua cov yas nto hydrophilic thiab tsim cov ntsiab lus anchoring, tsim micropores rau electroplating tom ntej los ua cov ntsiab lus vuam kom ua tiav qhov siab tshaj plaws adhesion. Cov ntsiab lus vuam muaj tshuaj lom neeg ua haujlwm, muab cov txheej txheem rau absorbing palladium activators.

2. Passivate cov nplaum txheej ntawm cov khoom dai kom tsis txhob plating ntawm cov khoom dai.

2, Lub hauv paus ntsiab lus ntawm coarsening:

Using the strong acidity of the roughening solution to dissolve the B (butadiene) component in ABS plastic, micro rough "dovetail shaped" small holes are formed on the surface of the parts, increasing the contact area between the electroplating surface and the parts. And some polar hydrophilic groups such as - OH, - SO3H,>C=0 yog tsim nyob rau saum npoo ntawm ib feem, ua rau saum npoo ntawm qhov hydrophilic.

3, Lub luag haujlwm ntawm coarsening txhua yam:

1. Chromic acid:

Siv oxidation tshem tawm butadiene los ntawm ABS los tsim cov ntsiab lus anchoring thiab ua kom cov adhesion ntawm palladium.

2. Sulfuric acid:

Tshem tawm styrene los ntawm cov yas nto thiab ua kom cov adhesion ntawm palladium.

3. Trivalent chromium:

Cov ntsiab lus trivalent chromium nyob rau hauv cov tshuaj roughening yuav nce ntxiv raws li qhov roughening zuj zus. Trivalent chromium yog ib qho khoom los ntawm cov txheej txheem roughening, thiab theem ntawm trivalent chromium ncaj qha cuam tshuam rau kev sib khi quab yuam ntawm cov khoom, yuav tsum muaj kev tswj hwm ntawm 8-15g / l. Cov theem ntawm trivalent chromium yuav tsum tau tswj los ntawm electrolytic regeneration, tab sis qee lub tsev lag luam tsis muaj cov khoom siv electrolysis, yog li kev ua kom qis qis (piv txwv li scrapping ntawm coarsening tov) yuav tsum tau tswj cov ntsiab lus ntawm trivalent chromium mus rau qib ib txwm.

4. Tus neeg sawv cev ntub dej:

Ntau lub chaw tsim khoom tsis tau ntxiv tus neeg sawv cev ntub dej no, uas tsis tsuas yog tsim qhov chaw ua haujlwm tsis zoo rau cov neeg ua haujlwm, tab sis kuj cuam tshuam rau cov khoom siv hluav taws xob thiab cov khoom lag luam ntawm cov khoom. Cov nyhuv ntawm kev ntxiv tus neeg sawv cev ntub dej yog raws li hauv qab no:

A. Xyuas kom meej tias cov khoom yog ntub tag thiab nws tuaj yeem coarsened tusyees;

B. Nyob rau hauv qhov kev txiav txim ntawm huab cua agitation, ua npuas ncauj yog tsim nyob rau saum npoo ntawm lub plating tov, uas zoo inhibits tiam ntawm "chromium pos huab";

C. Txo qhov nro ntawm cov tshuaj roughening los tsim kev sib cuag zoo ntawm cov tshuaj plating thiab cov khoom. Nws kuj tuaj yeem txo qhov poob ntawm cov khoom.

www.superbheater.com