Kev tshem tawm ntawm Organic Impurities hauv Potassium ntsev Zinc Plating Solution rau Hluav Taws Kub Kub Tube Electroplating

Kev tshem tawm ntawm Organic Impurities hauv Potassium ntsev Zinc Plating Solution rau Hluav Taws Kub Kub Tube Electroplating

Potassium ntsev zinc plating tau siv dav vim nws qhov zoo ntawm kev tiv thaiv ib puag ncig, kev txuag hluav taws xob, thiab kev ua haujlwm yooj yim. Txawm li cas los xij, tom qab lub sijhawm ntev ntawm kev siv cov zinc plating tov, ntau cov khoom lag luam organic decomposition yuav khaws cia hauv cov tshuaj plating. Thaum lub sij hawm electroplating, cov pob dub yuav tshwm rau saum npoo ntawm zinc plating txheej, cuam tshuam rau qhov zoo ntawm cov khoom ua haujlwm passivated. Cov txheej txheem ib txwm siv los kho cov organic decomposition impurities hauv zinc plating tov yog ntxiv hydrogen peroxide. Tab sis nrog rau daim ntawv thov ntawm cov brighteners tshiab, muaj ntau thiab ntau cov organic tebchaw nrog ntev chains uas tsis yooj yim decomposed. Kev siv hydrogen peroxide rau kev kho mob tuaj yeem ua rau tsis tiav ntawm cov organic teeb meem, kev kho lub voj voog luv luv, thiab nce nqi kho mob.

Peb siv cov tshuaj poov tshuaj permanganate los kho cov organic decomposition impurities hauv zinc plating tov. Kev xyaum tau ua pov thawj tias kev kho mob tau zoo thiab cov txiaj ntsig zoo.

1. Plating tshuaj kho

Noj 30mL ntawm cov tshuaj plating thiab kho tus nqi pH ntawm cov tshuaj plating kom qis dua 3, Kub rau 50-60 C, maj mam ntxiv poov tshuaj permanganate, 0.59 zaug txhua zaus. Nyob rau ntawm lub sijhawm no, pom muaj ntau ntawm cov dub MnoZ precipitates raug tsim. Thaum lub sij hawm ntxiv, nws yog ib qho tsim nyog yuav tsum tsis tu ncua do thiab ntxiv sulfuric acid kom tus nqi pH hauv qab 3. Vim tias poov tshuaj permanganate muaj peev xwm oxidation muaj zog tshaj plaws nyob rau hauv cov acidic muaj zog. Thaum cov kev daws teeb meem pom cov xim liab liab me ntsis thiab tuaj yeem hloov tsis tau rau ob peb feeb, nws qhia tau hais tias tus nqi ntawm poov tshuaj permanganate ntxiv yog txaus. Lub sijhawm no, ntxiv 1-3 mJ ntawm hydrogen peroxide ntxiv, Ua rau cov poov tshuaj permanganate ntau dhau. Siv cov tshuaj sodium hydroxide nrog cov concentration ntawm lmol kom nce pH tus nqi ntawm cov tshuaj plating rau 5-6. Lub sijhawm no, muaj ntau ntau ntawm Fe hauv cov tshuaj plating, uas yuav hloov mus rau hauv nag lossis daus. Raws li re (oH), nws tuaj yeem suav tau tias thaum pH tus nqi siab dua 3.5, qhov concentration ntawm Fe yuav txo qis rau qis dua {{10}} mol / L. Ntawm tus nqi pH ntawm 5-6, feem ntau cov hlau hnyav ions yuav raug hloov mus rau hauv precipitates. Ntxiv 2 L ntawm zinc hmoov thiab do rau 0. sh. Tom qab ntawd ntxiv 2-3 L ntawm activated carbon thiab do rau 0. sh. Lim. Tshaj hydrogen peroxide tuaj yeem raug tshem tawm raws li qhov xwm txheej ntawm 50-60 "c thiab khaws cia kub ntawm 0.sh, thiab tuaj yeem kuaj nrog Potassium iodide-starch test paper.

Cov tshuaj lim dej yog electrolyzed nrog qhov tsis muaj tam sim no tsis kam ntawm 0. IA/d rau 1-2 teev. Cov ntsiab lus ntawm txhua yam hauv cov tshuaj plating yog txheeb xyuas, ntxiv raws li xav tau, thiab tom qab ntawd ntxiv ib lub ci ci ntxiv rau kev sim plating.

Peb siv txoj kev kho mob no los kho cov tshuaj zinc plating ntawm cov kab hauv ntej ntawm qhov chaw lag luam. Tom qab kev kho mob, cov tshuaj plating yog qhov tseeb thiab kev sim plating zoo, uas tau lees paub thiab qhuas los ntawm cov chaw tsim khoom.

2 Kev xaus

Kev siv cov poov tshuaj permanganate los kho cov organic decomposition impurities nyob rau hauv poov tshuaj ntsev zinc plating tov muaj txiaj ntsig zoo, kev kho mob zoo, kev ua haujlwm yooj yim, thiab kev ua tau zoo hauv kev xyaum, uas tuaj yeem nqa qee yam txiaj ntsig kev lag luam rau cov lag luam.

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