Yuav ua li cas xaiv cov txheej txheej rau electroplating? Dab tsi yog qhov zoo thiab tsis zoo ntawm cov khoom sib txawv?

Electroplating yog txheej txheem uas tso cov hlau lossis alloy txheej ntawm ib substrate los ntawm kev tso nyiaj electrolytic. Nws yog dav siv nyob rau hauv cov chaw xws li kev tiv thaiv corrosion, kho kom zoo nkauj, hluav taws xob conduction, thiab coj kev tiv thaiv. Xaiv cov khoom tsim nyog cov khoom tsim nyog yog cov kauj ruam tseem ceeb hauv electroplating, ncaj ncees cuam tshuam cov khoom lag luam zoo, raug nqi, thiab lub neej. Cov hauv qab no yog qhov xwm txheej los txiav txim siab thaum xaiv cov khoom siv txheej txheej, nrog rau kev tsom xam ntawm qhov zoo thiab qhov tsis zoo ntawm cov khoom sib txawv.

I. Cov ntsiab lus tseem ceeb hauv kev xaiv cov khoom siv txheej txheej

1. Yuav tsum ua haujlwm

Cov xwm txheej sib txawv yuav tsum muaj cov txheej txheem sib txawv. Piv txwv li, kev tiv thaiv corrosion feem ntau yuav tsum tau corrosion - Cov ntaub ntawv zoo nkauj (xws li tawv ncauj), thiab tooj liab (xws li tawv ncauj)

2. Substrate Cwj Pwm

Cov khoom siv substrate thiab qhov xwm txheej nto cuam tshuam rau cov nplaum thiab kev sib dhos ntawm txheej. Piv txwv li, steel substrates yog tsim nyog rau plating nrog cov khoom siv xws li zinc thiab npib tsib xee, thaum yas substtrates yog xav tau kev kho hluav taws xob ua ntej plating lossis ua kom kho mob kom ua haujlwm.

3. Ib puag ncig cov xwm txheej

Kev xaiv ntawm txheej txheej yuav tsum xav txog yam zoo xws li kev corrosiveness, kub thiab av noo ntawm kev ua haujlwm ib puag ncig. Piv txwv li, zinc thiab cadmium muaj cov chaw ua haujlwm loj dua hauv ib puag ncig cov tub rog, thaum chromium thiab chromium muaj ntau dua nyob rau hauv high-}}}}}}} qhov chaw ib puag ncig.

4. Nqi

Tus nqi ntawm txheej txheej suav nrog cov khoom siv raw khoom, kev ua nyuaj, thiab cov txheej txheem kev nyuaj. Piv txwv li, cov hlau muaj txiaj ntsig xws li kub thiab nyiaj yog feem ntau siv nyob rau hauv high {{{} tus nqi thiab haum rau loj- teev cov ntawv thov.

5. Ib puag ncig yuav tsum tau

Qee cov txheej txheej txheej (xws li cadmium thiab cov hmoov txhuas tau ua rau ib puag ncig thiab tib neeg kev noj qab haus huv thiab yuav tsum ua raws li cov kev cai ib puag ncig. Tam sim no, ib puag ncig phooj ywg zoo xws li cynaide {{1} {{2 {2 {2 {2 {2 {2 {2} {dawb electroplating yog ua kom nrov dua.

Ii. Qhov zoo thiab qhov tsis zoo ntawm cov khoom siv txheej txheej

1. Zinc (Zn)

{{0- Cov txiaj ntsig: Zinc yog ib feem siv anti {1}

-} Tsis Txaus Siab: Zinc muaj qhov tsis tshua muaj hardness, tsis zoo rau corrosion hauv cov acidic lossis alkaline ib puag ncig. Zinc Txheej txheej feem ntau yuav tsum tau kho passivation los txhim kho corrosion tsis kam.

2. Npib (NI)

{{0- Cov txiaj ntsig: Nickel Plating Muaj cov khoom lag luam zoo heev, thiab cov khoom siv hluav taws xob, thiab khoom zoo nkauj. Nickel tseem tuaj yeem ua haujlwm nruab nrab ntawm nruab nrab, txhim kho lub zog uas muaj zog ntawm cov txheej txheej tom ntej.

-} Tsis Zoo: Nickel yog kim thiab tuaj yeem ua rau tawv nqaij ua xua hauv qee tus neeg. Tsis tas li ntawd, Nickel Electroplating cov txheej txheem yog ib puag ncig muaj kev phom sij, tsim nyog siv ntawm cov kev xaiv zoo ib puag ncig.

3. Chromium (C)

{{0- Cov txiaj ntsig: chromium plating muaj siab tawv, ua rau nws siv tau rau cov cuab yeej, xws li chrome plating).

-} Tsis muaj kev cuam tshuam: Hexavalent Chromium yog kev phom sij rau ib puag ncig cov chromium lossis chromium- txheej txheem pub dawb. Tsis tas li ntawd, chromium plating tawg thiab nquag tawg.

4. Tooj (CU)

{{0- Cov plating muaj hluav taws xob thiab thermal conductivity, ua rau nws feem ntau siv nyob rau hauv cov hluav taws xob sib xyaw thiab cov ntawv luam tawm hluav taws xob. Tooj liab kuj tseem tuaj yeem ua ib txheej nruab nrab, txhim kho lub zog uas muaj zog ntawm cov txheej txheej tom ntej.

{{0-} Tsis muaj: Tooj muaj cov khoom tsis zoo thiab muaj cov khoom siv sib xyaw ua ke nrog lwm cov kab mob no lossis chromium).

5. Kub (AU)

{{0- Cov Plating Muaj cov plating, thiab feem ntau yog siv hluav taws xob zoo, thiab cov hniav nyiaj hniav kub, thiab aerospace.

-} Tsis Txaus Siab: Kub yog kim heev thiab feem ntau tsuas yog siv hauv qhov tseem ceeb lossis siab-}}}}}}} cov khoom kawg.

6. Nyiaj (AG)

{{0- Cov txiaj ntsig: Nyiaj plating muaj hluav taws xob thiab thermal tsis kam, thiab feem ntau siv cov khoom siv hluav taws xob thiab cov khoom zoo nkauj.

-} Qhov tsis zoo: Cov nyiaj yooj yim thiab cov Sulfides los ua cov nyiaj dub, uas cuam tshuam nrog cov tsos thiab kev ua tau zoo. Tsis tas li ntawd, nyiaj yog kim.

7. Tin (sn)

{{0- Cov txiaj ntsig: Tin Plating muaj cov khoom siv veldability zoo heev thiab corrosion tsis kam, thiab feem ntau siv hauv cov hluav taws xob thiab ntim khoom noj.

-} Qhov tsis zoo: Cin muaj qhov tsis tshua muaj zog, thiab muaj kab mob tsis zoo "(tin whisker kev loj hlob) ntawm tsawg kub.

8. Alloy plating

{{0- Cov txiaj ntsig: Alloy Plating (xws li Nickel {}}} {}}- {}} Cov hlau los txhim kho cov khoom lag luam ntawm cov txheej txheem tag nrho. Piv txwv li, nickel - phosphorus alloy muaj cov nickoy zoo tshaj plaws muaj zoo dua corrosion tsis zoo dua li cov ntshiab huv si zinc.

-} Tsis Zoo: Alloy Plating yog qhov nyuaj thiab kim heev, thiab yuav tsum tau tswj nruj txheej txheem cov txheej txheem.

III. Kev tshawb fawb rooj plaub ntawm kev xaiv plating

1. Cov Khoom Siv Tsheb

Cov chaw tsheb feem ntau yuav tsum corrosion - tiv taus, hnav {{{1} {tsis kam, thiab txheej zoo nkauj. Piv txwv li, cov log log feem ntau yog chrome {3} plated pom kev zoo, thaum cov plaub lwj tsis kam los yog} plated rau kev txhim kho corrosion.

2. Cov khoom hluav taws xob

Cov khoom siv hluav taws xob muaj cov phiaj xwm qib siab rau kev ua haujlwm thiab corrosion tsis kam. Piv txwv li, cov txuas yog feem ntau kub {{1} plated ua kom zoo dua qub rau kev txhim kho cov laug cam siv daim phiaj tooj liab ua cov txheej txheem celver.

3. Cov khoom lag luam zoo nkauj

Cov khoom hniav zoo nkauj yuav tsum muaj kev zoo siab kom zoo nkauj rau cov txheej. Piv txwv, cov hniav nyiaj hniav kub yog feem ntau plated nrog kub lossis rho tawm rau kev txhim kho luster thiab corrosion tsis kam, thaum cov khoom hauv tsev neeg feem ntau plated thiab nickel rau kev txhim kho tsos thiab muaj txiaj ntsig.

IV. Lub ntsiab

Kev xaiv cov khoom siv rau hauv cov txheej txheem electroplating yuav tsum muaj kev ua kom muaj qhov ua haujlwm zoo, cov yam ntxwv ib puag ncig, cov cai ib puag ncig, thiab ib puag ncig cov cai. Cov ntaub ntawv plating plating sib txawv muaj lawv tus kheej zoo thiab qhov tsis zoo. Piv txwv li, Zinc muaj tus nqi qis tab sis tsis zoo hnav tsis kam, chromium muaj siab tab sis siab brittleness, thiab kub muaj kev ua tau zoo tab sis tus nqi siab. Hauv kev siv cov kev siv, ntau - txheej plating lossis alloy plating yog feem ntau siv los ua kom tau raws li ntau yam kev xav tau. Nrog rau kev tiv thaiv ib puag ncig ib puag ncig, ib puag ncig cov txheej txheem electroplating xws li Cyanide Intrass thiab chromium {6} free {free yuav dhau los ua ib tug txheej txheem yav tom ntej. Los ntawm rationalally xaiv plating cov ntaub ntawv thiab kev ua kom cov txheej txheem kev ua kom zoo dua, cov khoom lag luam thiab lub neej pabcuam tuaj yeem txhim kho.