Yuav ua li cas puas impurities yuav tsum tau them sai sai rau nyob rau hauv lub ci nickel plating tov ntawm hluav taws xob cua sov raj?

Yuav ua li cas puas impurities yuav tsum tau them sai sai rau nyob rau hauv lub ci nickel plating tov ntawm hluav taws xob cua sov raj?

Teb: Kev mloog yuav tsum tau them rau ci npib tsib xee plating:

(1) Cov khoom siv raw khoom tsis huv. Yog tias nickel sulfate muaj tooj liab, zinc, thiab nitrate, thiab anode nickel phaj muaj impurities xws li hlau;

(2) Kev ua qias tuaj thaum lub sij hawm tsim khoom. Yog tias kev ntxuav tsis huv, cov tooj liab thiab chromium coj los ntawm cov khoom lossis cov khoom siv. Decomposition khoom ntawm organic additives. Cov no yog tag nrho cov teeb meem impurities nyob rau hauv ci nickel plating, uas yuav tsum tau ua tib zoo tshem tawm.

18. Puas yog qhov tshwm sim ntawm tev thiab flaking tom qab nickel plating thiab chromium plating feem ntau tshwm sim los ntawm kev kho tsis zoo ua ntej plating?

Teb: Qhov tshwm sim ntawm txheej txheej detachment tshwm sim tom qab nickel plating thiab chromium plating. Kev kho tsis zoo ua ntej plating yog qhov tseem ceeb, tab sis nws yuav tsis yog vim kev kho tsis zoo ua ntej plating. Nws muaj feem xyuam rau cov xwm txheej ntawm cov txheej txheem plating thiab qhov tshwm sim ntawm kev tsim ob txheej ntawm nickel.

19. Vim li cas hlau chromium tsis tuaj yeem siv los ua chrome plating anode?

Teb: Chromium plating tsis siv soluble hlau chromium raws li cov anode, feem ntau vim nws yog soluble heev thaum lub sij hawm chromium plating txheej txheem. Tam sim no kev ua haujlwm ntawm anodic hlau chromium dissolution yog qhov siab dua li ntawm cathodic hlau chromium deposition. Nyob rau hauv txoj kev no, raws li cov txheej txheem electroplating zuj zus, cov ntsiab lus chromium nyob rau hauv cov tshuaj plating yuav inevitably nce siab, ua rau nws tsis yooj yim sua kom ua tiav ib txwm electroplating. Ntxiv mus, hlau chromium yog siv los ua cov anode, uas feem ntau dissolves rau hauv cov tshuaj nyob rau hauv daim ntawv ntawm trivalent chromium ions, ua rau ib tug loj tsub zuj zuj ntawm trivalent chromium ions nyob rau hauv lub plating tov. Nyob rau tib lub sij hawm, vim lub brittleness ntawm hlau chromium, nws yog ib qho nyuaj rau tshuab nws mus rau hauv ntau yam duab, yog li tag nrho cov hlau chromium yuav siv tsis tau raws li lub anode. Feem ntau, txhuas lossis txhuas alloys yog siv los ua cov anode hauv cov txheej txheem chromium plating.

www.superbheater.com