Qhov piv ntawm chrome plated anode cheeb tsam mus rau thaj chaw cathode yog tsim nyog 1.5 mus rau 2: 1. Yog hais tias lub anode cheeb tsam yog heev me me, trivalent chromium nyhav rau hauv cov kua. Thaum twg lub trivalent chromium tshaj qhov tso cai concentration, nws yuav cuam tshuam rau cov hauj lwm qub. Nyob rau lub sij hawm no, ntxiv rau qhov txo qis ntau ntawm cov txheej, cov conductivity ntawm qhov yuav daws kuj yuav txo, qhov tsis kam yuav nce, qhov tam sim no yuav tsis ruaj tsis khov, thiab lub chromium txheej yuav tsaus Hnub no vim li cas, raug them rau thaj tsam zoo hauv kev tswj ntawm kev sib piv ntawm thaj chaw tsis zoo thiab zoo. Qee lub sij hawm thaj chaw ntawm anode phaj tsis yog me me, tiam sis feem ntau ntawm cov cheeb tsam deg yog them los ntawm cov hlau lead chromate thiab los ntawm nws cov kev ua haujlwm zoo.
Qhov tsis ua hauj lwm tshwm sim hauv qhov no tshwm sim los ntawm qhov no, thiab cov ntsiab lus ntawm trivalent chromium tau soj ntsuam kom mus txog 9g / L.
Yuav kom tsis txhob muaj qhov tsis zoo ntawm cov hlau lead uas ua rau xim daj chromate anode ntom, thiaj li hais tias qhov sib xyaw ntawm trivalent chromium yog tswj li ntawm ntau yam, thaum siv lub anode tshiab (ntxuav anode), electrolysis nrog high voltage rau 5 ~ 10min, los txhawb qhov anode deg Ib lub xim dub-xim av-oxide nrog cov hluav taws xob hluav taws xob muaj lub hauv paus tsim muaj los tsim kom muaj cov kev kho mob rau lub yeeb tshuaj ntawm qhov teeb meem ntawm qhov teeb meem rau lub chromium ntawm lub anode, thiaj li hais tias cov concentration ntawm tryptic chromium nyob rau hauv cov tshuaj yog khaws cia nyob rau hauv qhov ncaj ntau yuav tsum tau txheej txheem chromium plating, yog li no rau kev txij nkawm. Chromium plating tov stability.
Txhawm rau tiv thaiv cov oxide txhuas nyob rau ntawm qhov anode, yuav tsum tau muab cov ntawv hlau anode tawm tom qab ua tiav, muab dai rau hauv qhov khoob khawm ntawm sab ntawm lub tais plating, thiab cov kua dej nyob hauv qhov chaw anode yuav ntxuav tseg nrog tus da dej saum taub hau. Txwv tsis pub, oxid txhuas nyob rau ntawm qhov chaw ua haujlwm yuav nyob nrog chromium. Cov chromic acid residual ua haujlwm thiab ua rau cov neeg ua haujlwm tsis muaj hlau lead chrate, xws li:
Pb02 + 2H2Cr04 → Pb (Cr04) 2 ++ 2H20
Hauv qhov ua piv txwv no, cov txheej txheem hauv qab no tau siv los daws qhov teeb meem: Qhov loj anode thiab cov cathode cathode tau siv. Qhov chaw ntawm qhov anode yog: cathode cheeb tsam = 30: 1, thiab qhov anode tam sim no yog ceev 2A / dm2. Qhov teeb meem ntawd maj maj tom qab raug kho los ntawm cov qauv saum toj no.