Yuav ua li cas Electroplating txhim kho cov khoom lag luam ntsev txau tsis tau? Cov txheej txheem dab tsi tuaj yeem txhim kho ntsev txau tiv thaiv?

Kev daws teeb meem yog txheej txheem kev kho mob ua kom cov hlau lossis alloy txheej tso rau hauv ib substrate los ntawm electrolysis. Nws yog dav siv los txhim kho cov corrosion tsis kam, hnav tsis kam, thiab cov khoom zoo nkauj ntawm cov khoom. Ntsev txau txau tsis kam yog qhov taw qhia tseem ceeb ntawm kev corrosion tsis kam ntawm cov txheej txheem hluav taws xob, tshwj xeeb tshaj yog rau cov khoom lag luam hauv tsev marine lossis hauv cov av noo thiab cov dej qab. Txhawm rau txhim kho cov ntsev txau tiv thaiv cov khoom lag luam hluav taws xob, kev rau siab tuaj yeem tsim cov ntaub ntawv, ua kom cov txheej txheem ua kom zoo dua qub, thiab ua tiav} kev ua. Hauv qab no yog qee qhov kev ntsuas thiab cov qauv txheej txheem.

1. Xaiv cov khoom siv hluav taws xob

Cov khoom siv ntawm electroplating txheej ncaj qha rau cov ntsev txau ua kom tsis txhob muaj tshuaj txau cov khoom. Cov hlau feem ntau yog siv zinc, npib tsib xee, chromium, thiab tooj liab, txhua tus nrog sib txawv corrosion. Piv txwv li:

- Tam sim no zinc plating: ZINC muaj kev tiv thaiv corrosion zoo, tshwj xeeb yog nyob hauv nruab nrab lossis ib puag ncig ib puag ncig. Kev kho mob passivation tuaj yeem txhim kho cov ntsev kom tsis txhob muaj dej txau ntawm zinc plating.

-} Nickel plating: Nickel muaj cov corrosion tsis kam rau zinc thiab feem ntau siv hauv kev thov corrosion tiv thaiv corrosion. Nickel plating tuaj yeem ua kom tau ntxiv los ntawm ntau-}}} {chromium mivers).

- chromium plating thiab hnav tsis muaj zog thiab hnav tsis zoo thiab siv tau cov kev siv hluav taws xob. Txawm li cas los xij, chromium plating feem ntau nyias thiab yuav tsum tau ua ke nrog lwm cov txheej txheej.

2. Electroplating txheej txheem optimization

Ua kom zoo dua lub txheej txheem electroplating yog qhov tseem ceeb rau kev txhim kho ntsev txau ua kom dej txau. Hauv qab no yog qee cov txheej txheem ua kom tau zoo:

- multilayer electroplating: Xws li nickel {{{{{{}} chromium. Tus qauv multilayer no tuaj yeem thaiv kev nkag mus ntawm corrosive media, yog li kev txhim kho ntsev txau txau.

- microscack: microcrore Control: microppors thiab micropores hauv lub electropards yog thawj txoj hauv kev rau kev tawm tsam. Los ntawm kev ua kom zoo xws li cov phiaj xwm kev daws teeb meem, ceev faj tam sim no, thiab kub,, thiab kub thiab kub thiab txias.

-} pulse plating: piv rau cov tsoos DC electroplating, plulse ntawm txheej, yog li ua kom haum corrosion.

{- electropating da dej ntxiv: Ntxiv cov neeg ua kom muaj zog (xws li cov neeg da dej zoo thiab cov qauv ntawm cov txheej thiab txo qhov porosity.

3. Kev kho mob passivation

Kev Kho Mob Passivation yog ib txoj kev tseem ceeb rau kev txhim kho cov ntsev txau tiv thaiv cov txheej txheem electroplated. Ua ntej tshaj tawm cov yeeb yaj kiab ua rau cov duab dub rau ntawm cov hlau saum npoo los tiv thaiv corrosion los ntawm corrosive tawm. Cov kev sib txuas lus passive suav nrog:

{{0 {} Chromate Passivation: Passivation Kev Kho Mob Siv Cov Tshuaj Chinc lossis Cadmium Txheej Txheem Kuj cuam tshuam ntau qhov txau ntsev kom tsis kam. Chromate passivation films muaj tus kheej zoo heev-} kho cov khoom.

- chromium {{1} free passivation (xws li nce ib puag ncig kev tiv thaiv) yog maj mam hloov kev tsoos chromate passivation passivation. Thaum cov txheej txheem no yog tus phooj ywg ib puag ncig, lawv cov ntsev txau ua haujlwm tsis tshua qis qis dua li ntawm passivation.

- Tsis txhob muaj lub ntiaj teb tsis tshua muaj kev tiv thaiv zoo nkauj (xws li Ciab thiab Lanthhanum) tuaj yeem tsim cov yeeb yaj kiab tsis tshua muaj, txhim kho cov xeb ntawd ntawm cov txheej.

4. Kev sib khi

Sealing cuam tshuam nrog kev thov cov organic lossis inorganic txheej rau saum npoo ntawm cov txheej electroplated ntxiv rau ntxiv cais nws los ntawm kev tawm xov xwm corrosive. Cov hau kev sib khi sib xws muaj:

{- egoric txheej sealing: soliging nrog epoxy cob thiab polyurethane tiv taus ntsev txau.

-} inorganic coating sealing: sealing nrog inorganic cov ntaub ntawv xws li Silane tuaj yeem tsim cov txheej tiv thaiv tuab.

5. Post -} cov txheej txheem kho

Tshaj tawm -}} Cov txheej txheem kho tau ntxiv tuaj yeem ua kom zoo dua qub thiab qhov zoo ntawm cov txheej electroplated. Piv txwv li:

- Kev Kho Mob Thaum Tshav Kub Kub: Qhov tsim nyog txhawb cov txheej sab hauv cov txheej txheem hluav taws xob, txhim kho nws qhov ntom ntom thiab cov nplaum.

{{0- tshuab kho tshuab: polishing piishing tuaj yeem txo cov khoom sib txawv thiab txo cov khoom sib nkag siab ntawm cov tub ceev xwm corrosive.

6. Tswjhwm thiab kuaj

Yuav kom ntseeg tau tias cov ntsev txau tiv thaiv cov khoom electroplated, tswj hwm nruj thiab kev kuaj mob yog qhov tseem ceeb. Cov kev ntsuas sib xws muaj xws li:

{{0 {}}} tsuag tsuag kuaj: sim cov txheej corrosion: ntsuas cov txheej electroplated los ntawm simulating ib tug siab- ntsev txau ib puag ncig. Cov qauv siv uas siv tau suav nrog ATM B117 thiab ISO 9227.

{{0- Porosity Kev Tshuaj Ntsuam: Porosity Hauv Txheej Kev Ntsuas Xyuas Siv Tshuaj Los Ntawm Cov Tshuaj Los Ntawm Kev Ntsuam Xyuas Nws Corrosion Kuj.

-}}} cov txuj ci kuaj: adhesion nruab nrab ntawm txheej thiab substrate yog ntsuas siv cov khawb thiab khoov kev xeem.

7. Kev tiv thaiv ib puag ncig thiab kev txhim kho kom ruaj khov

Nrog nce kev tiv thaiv ib puag ncig, cov txheej txheem electroplating tseem txav mus rau ntawm ntsuab thiab ib puag ncig phooj ywg ze. Piv txwv li:

-} Cyanide {}} Plating cov txheej txheem yog kev phom sij rau cov txheej txheem (xws li alkaline zincate plating) yog maj mam ua mainstream.

{{0- Tsawg {{1} {{{{{{{2} {{3} {{3} {-

Tag

Kev txhim kho cov ntsev txau tiv thaiv cov khoom electroplated ntawm ntau yam, suav nrog kev xaiv tsim, cov txheej txheem kev ua kom zoo, thiab kev tswj hwm zoo. Cov txheej corrosion tsis kam ntawm cov txheej txheem hluav taws xob yuav ua tau zoo dua los ntawm kev npaj ua cov txheej txheem xws li multi- txheej plating, passivation plating, passivation plating, passivation plating, passive, thiab seasing. Nyob rau tib lub sijhawm, nrog kev nce qib nce rau ib puag ncig kev tiv thaiv, ntsuab thiab ib puag ncig intrassplating cov txheej txheem thiab cov ntaub ntawv yuav dhau los ua tus qauv ntawm kev txhim kho yav tom ntej. Los ntawm kev ua kom zoo dua thiab kev tsim kho tshiab, electroplating ua cov thev naus laus zis yuav muab cov tshuaj tsuag zoo ntxiv thiab siv sijhawm ntev.