Tshem tawm tom qab electroplating kho ntawm hluav taws xob cua sov raj

Tshem tawm tom qab electroplating kho ntawm hluav taws xob cua sov raj

1. Txoj kev kho tshuaj

Los ntawm kev ntxiv cov tshuaj tua kab mob rau cov dej khib nyiab electroplating, cov pa phem hauv cov dej khib nyiab tau oxidation, txo cov tshuaj tiv thaiv, los yog coagulation, thiab tom qab ntawd raug cais tawm ntawm cov dej kom huv cov dej khib nyiab thiab tso tawm tom qab ua tiav cov qauv tso tawm. Raws li cov pa phem sib txawv uas muaj nyob hauv cov dej khib nyiab, cov txheej txheem kev kho mob sib txawv tuaj yeem siv tau. Piv txwv li, ntxiv oxidants (xws li sodium hypochlorite, bleaching hmoov, bleaching essence, kua chlorine, thiab lwm yam) rau kev kho mob ntawm cyanide uas muaj dej khib nyiab (cyanide tooj liab plating, cadmium plating, nyiaj plating, alloy plating, thiab lwm yam); Ntxiv cov tshuaj txo qis (sodium bisulfite, hydrazine hydrate, ferrous sulfate, thiab lwm yam) los kho chromium uas muaj dej khib nyiab; Ntxiv coagulants rau kev kho cov zinc plating (alkaline zincate zinc plating) cov dej khib nyiab; Ntxiv cov neeg ua haujlwm nruab nrab los kho cov kua qaub thiab alkali khib nyiab. Tom qab ntawd, cov hlau hydroxide raug cais tawm ntawm cov dej khib nyiab los ntawm cov khoom sib cais ntawm cov kua dej xws li sedimentation, flotation thiab filtration kom cov dej khib nyiab tau raws li tus qauv tso tawm. Cov sludge sib cais tuaj yeem siv dav los yog kho tsis zoo raws li nws cov yam ntxwv los tiv thaiv kev ua qias tuaj.

Kev kho tshuaj ntawm electroplating dej khib nyiab yog cov cuab yeej siv kho mob ib txwm siv nrog kev kho mob ruaj khov, tus nqi kho mob qis (txog 0.2-0.5 yuan ib meter ntawm cov dej khib nyiab), thiab kev ua haujlwm yooj yim thiab kev tswj xyuas. Txawm li cas los xij, sludge generated tom qab kev kho mob yuav tsum tau muab pov tseg kom zoo. Rau electroplating dej khib nyiab uas tsis muaj nqi rov ua dua, kev kho tshuaj yuav tsum tau siv.

2. Txoj kev kho electrolytic

Cyanide silver plating, cyanide dawb nyiaj plating, thiab acidic tooj liab plating dej khib nyiab tuaj yeem kho los ntawm electrolysis. Ib qho rov qab nyiaj electrolysis tank yog ntsia ntawm ib sab ntawm lub hauv paus rinsing tank ntawm cov nyiaj plating ntau lawm kab, siv lub diaphragm dawb unipolar electrolysis tank. Silver ions nyob rau hauv cov dej khib nyiab yog tso rau ntawm cathode thaum lub sij hawm electrolysis txheej txheem, thiab nws cov nyiaj hlau yog tsis tu ncua. Rau cyanide nyiaj plating dej khib nyiab, thaum electrolytic rov qab ntawm cov nyiaj yog nqa tawm, electrolytic cyanide tawg kuj tau ua. Cov dej kho tau rov qab mus rau lub tank thawj zaug yaug, thiab lub tank zaum kawg yog rinsed nrog dej ntws. Cov dej yaug ua tau raws li cov qauv tso tawm thiab raug tso tawm ncaj qha. Siv tib lub thev naus laus zis los kho cov kua qaub tooj liab plating cov dej khib nyiab tuaj yeem rov qab tau cov hlau tooj liab. Cov khoom siv cathode ntawm cov khoom siv no rau electrolytic hlau rov qab feem ntau tuaj yeem yog cov hlau tsis muaj steel, thiab cov khoom siv anode yuav tsum yog cov anodes insoluble (xws li titanium plated nrog lead dioxide, titanium coated nrog ruthenium dioxide, graphite, thiab lwm yam). Lub hwj chim ntawm lub xov tooj ntawm tes electrolytic tuaj yeem yog DC lub zog lossis lub zog pulse. Nyob rau hauv xyoo tas los no, qee cov neeg tau npaj ntau cov thev naus laus zis rau kev kho cov dej khib nyiab electroplating los ntawm kev tshawb fawb, thiab ua raws li cov qauv kev ua lej sib koom ua ke los ntsuas thiab xaiv qhov zoo tshaj plaws, suav nrog kev xav txog yam xws li kev siv tshuab, kev lag luam, ib puag ncig, peev txheej, thiab lub zog, ua kev xaiv technology. raws li scientific hauv paus yog ib txoj kev ua tau.

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