Yuav ua li cas Electroplating txhim kho cov khoom lag luam hnav hnav tsis kam? Dab tsi cov txheej txheem tuaj yeem txhim kho cov coj tsis kam?

Electroplating yog txheej txheem uas txhim kho cov khoom saum npoo av ntawm cov khoom siv los ntawm kev tso cov hlau lossis alloy txheej los ntawm electrolysis. Nws yog dav siv hauv kev lag luam tsim, tshwj xeeb rau kev txhim kho cov khoom lag luam kev tiv thaiv tsis kam. Hnav tsis kam yog lub peev xwm ntawm cov khoom siv los tiv thaiv qhov chaw puas tsuaj los ntawm kev sib txhuam, cuam tshuam, cuam tshuam ncaj qha rau cov khoom lag luam lub neej thiab kev ua tau zoo. Cov hauv qab no yuav tham txog seb cov khoom hluav taws xob puas txhim kho cov khoom coj tsis kam, nrog rau cov txheej txheem txhim kho.

1. Cov hauv paus ntsiab lus ntawm electroplating rau kev txhim kho cov hnav tsis kam

Electropilating kev coj hnav tsis kam los ntawm kev tso ib lossis ntau txheej ntawm cov khoom siv hlau lossis cov khoom siv tawv tawv, corrosion tsis kam, thiab kev txhuam cov khoom. Kev xaiv, tuab, qauv, thiab adhesion ntawm txheej rau lub substrate yog qhov tseem ceeb hauv kev txiav txim siab hnav tsis kam.

1. Txhim kho saum tawv tawv: Hardness yog qhov tseem ceeb ntawm cov khoom siv coj tawm. Cov khaubncaws sab nraud hluav taws xob feem ntau nyuaj dua li cov txheej txheem, ua rau tiv thaiv sab nraud txhuam thiab cuam tshuam. Piv txwv li, cov txheej txheem xws li Chrome plating, Nickel plating, thiab tawv chrome plating tuaj yeem txhim kho saum npoo hardness.

2. Txo cov coefficient ntawm kev sib txhuam: qee cov txheej txheem ua yeeb yam ntawm tus kheej {1} Lub ntsej muag lossis cov coefficients ntawm kev sib txhuam, uas tuaj yeem txo kev sib txhuam thiab hnav. Piv txwv li, cov txheej txheem xws li nyiaj plating, tooj plating, thiab zinc plating tuaj yeem txhim kho cov khoom siv zawv zawg cov khoom.

3. Txhim kho corrosion resistance: corrosion nrawm hnav ntawm cov khoom seem. Electroplating nrog corrosion heev - Tsis muaj hlau (xws li npib tsib) tuaj yeem txuas ntxiv rau cov khoom lag luam lub neej.

4. Txhim kho cov txheej saum npoo av: cov txheej electroplated nyob rau sab nraud tsis txaus ntseeg nyob rau ntawm substrate, tsim cov ntsej muag zoo nkauj, yog li txo kev sib txhuam thiab hnav.

Ii. Electroplating cov txheej txheem rau kev ua kom zoo

Cov hauv qab no yog qee cov txheej txheem elalus qhia tshwj xeeb tsim los txhim kho cov khoom lag luam uas hnav tsis kam:

1. Hard chrome plating

Hard chrome plating yog ib pawg dav dav siv hluav taws xob feem ntau siv los nce cov khoom siv lub ntsej muag zoo nkauj thiab hnav tsis kam. Lub hardness ntawm lub zog chrome txheej tuaj yeem ncav cuag 800 - 1000 hv, nws siab dua li cov hlau dog dig. Tsis tas li ntawd, lub zog chrome txheej muaj cov khoom siv corrosion zoo heev thiab ua rau muaj ib puag ncig zoo xws li cov kheej kheej hydraulic xws li cov tshuab hydraulic, piston pas nrig, thiab pwm.

2. Electroless npib tsib xee plating

Electroless npib tag nrho yog txheej txheej txheej uas yuav tsum tsis muaj hluav taws xob hluav taws xob sab nraud. Nws tsim cov khaub ncaws hnav zoo nkauj nickel - phosphorus alloy txheej ntawm lub substrate saum toj los ntawm cov tshuaj lom neeg. Lub harmness ntawm nickel - phosphorus txheej tuaj yeem nce ntxiv los ntawm kev kho cua sov, mus txog dua 1000 hv. Tsis tas li ntawd, Electroless npib npib nyiaj muaj hluav taws xob muaj txiaj ntsig zoo thiab coj mus ua haujlwm zoo thiab siv dav hauv ib lub aerospace, tsheb lag luam, thiab kev lag luam hluav taws xob.

3. Npib -} tungsten alloy plating

Nickel - Tungsten Alloy plating yog qhov siab {{{{{{{{{5} hv. Nws cov kev coj tawm tsam surpasses uas ntshiab nickel plating, thiab nws kuj muaj kev tiv thaiv corrosion thiab siab {} kub ruaj khov. Nickel-tungsten alloy plating yog feem ntau siv rau qee qhov kev hnav khaub ncaws siab thiab thaj chaw corrosion, xws li li qub, thiab bearings.

4. Zinc -} nickel alloy plating

Zinc -} nickel alloy plating yog ib puag ncig cov txheej txheem zoo nkauj nrog kev tawv tawv thiab hnav tsis kam. Nws hardness tuaj yeem ncav cuag 250 {{4 4}} 400 hv, thiab nws corrosion tsis kam tshaj plaws ntawm cov ntshiab plinc plating. Zinc-Nickel Alloy plating yog dav siv nyob rau hauv Automotive feem, Fasteners, thiab cov qauv txheej txheem.

5. Composite plating

Compound plating yog txheej txheem nyob rau hauv uas cov khoom seem (xws li Silicon Carbide, Txhuas Oxide, lossis Pob Zeb Diamond) yog embedded nyob rau hauv ib tug hlau txheej. Qhov txheej txheej txheej no tshwj xeeb tawv thiab hnav tsis kam, ua rau haum rau kev siv nyob rau hauv ib puag ncig hnav. Piv txwv li, silicon carbide-}}}}}} bibly {{{4 4 {} {}} tiv taus ntu.

6. Nyiaj thiab tooj liab plating

Nyiaj thiab tooj plating yog feem ntau siv los txhim kho cov khoom zawv zawg ntawm cov ntaub ntawv thiab txo cov coeffient ntawm kev sib txhuam. Nyiaj txheej txheej muaj cov hluav taws xob zoo nkauj thiab tus kheej- Lub cev lubricating, ua rau lawv muaj nyob rau hauv cov neeg hu nkauj thiab cov kabmob. Tooj liab txheej, nrog lawv cov thermal zoo heev thiab hnav tsis kam, yog tsim nyog rau lub tshuab cua sov thiab cov khoom sib txhuam.

III. Qhov tseem ceeb hauv kev txhim kho lub electroplating txheej txheem

Txhawm rau txhim kho cov hnav tsis kam ntawm cov txheej txheem hluav taws xob, cov txheej txheem hauv qab no yuav tsum tau ua kom zoo:

1. Txheej tuab: coating thickness ncaj qha cuam tshuam cov hnav coj tsis kam. Ib txheej uas yog yuag heev yuav tsis muab kev tiv thaiv, thaum ib txheej tuab yuav ua rau muaj kev ntxhov siab sab hauv thiab txo qis kev ntxhov siab. Feem ntau, cov txheej txheej tuab tuab yog xaiv raws li daim ntawv thov tshwj xeeb.

2. Plating da dej: Qhov muaj pes tsawg leeg: concentration thiab concentration ntawm cov plating da dej cuam tshuam ho cuam tshuam cov khoom ntawm txheej. Piv txwv li, hauv Electroless Nickel plating, muaj ntau dua phosphorus cov txiaj ntsig cov ntsiab lus hauv cov txheej zoo dua thiab hnav tsis kam.

3. Tam sim no ceev: thaum lub sijhawm cov txheej txheem electroplating, tam sim no ceev cov nqi tso nyiaj thiab qauv ntawm txheej. Kev nrawm dua tam sim no tuaj yeem ua rau muaj cov tsho tiv no ntxhoo lossis tsis xws luag, thaum lub sijhawm muaj ntau dua tam sim no yuav txo tau ntau lawm.

4. Substrate Pretreatment: Qhov kev huv si huv si thiab roughness ntawm substrate tseem ceeb cuam tshuam rau cov nplaum thiab kev sib txuam ntawm txheej. Cov kauj ruam tshwm sim xws li degreasing, pickling, thiab kev ua kom muaj feem ntau yuav tsum tau ua kom muaj qhov chaw nyob ntawm electrate.

5. Post {{- kev kho txheej txheem: Qee cov txheej txheem hluav taws xob yuav tsum muaj cov txheej txheem xws li kev kho cua sov lossis polishing kom txhawb ntxiv lawv cov peev txheej. Piv txwv li, kev kho cua sov tuaj yeem txhim kho lub hardness thiab hnav tsis kam ntawm electroless npib tsib xee txheej txheej.

IV. Cov Ntawv Thov Kev Txiav Txim Siab

1. Xaiv cov khoom siv txheej txheej tsim nyog: Xaiv cov khoom siv tsim nyog thiab cov txheej txheem raws li cov khoom lag luam ua haujlwm thiab cov kev xav tau ua haujlwm. Piv txwv li, hauv high - kub {3} {{- tungsten alloy) yuav tsum tau xaiv.

2. Kev ntsuas tus nqi thiab kev ua tau zoo: high- Kev ua tau cov txheej txheej, yog li sib npaug ntawm cov nqi thiab kev ua tau zoo yuav tsum tau pom raws li kev xav tau tiag tiag.

3. Kev tiv thaiv ib puag ncig thiab kev nyab xeeb: qee cov txheej txheem electrolating suav nrog cov tshuaj tiv thaiv ib puag ncig lossis kev ua raws li ib puag ncig cov kev ntsuas ib puag ncig.

V. Cov Ntsiab Lus

Electroplating yog txhais tau tias zoo ntawm kev txhim kho cov khoom lag luam coj tsis kam. Los ntawm xaiv cov khoom tsim nyog cov khoom tsim nyog thiab cov txheej txheem tsim kom zoo dua, cov khoom ua haujlwm corrosion, thiab kev ua phem ntawm cov khoom tuaj yeem txhim kho. Cov txheej txheem eleyplating rau kev ua kom muaj zog coj tawm ntawm cov chromium nyuaj plating, nickel {} tungsten alloy plating, thiab suav electroplating. Hauv kev siv cov tswv yim, kev ua tau zoo, raug nqi, thiab ib puag ncig cov ntsiab lus yuav tsum tau txiav txim siab kom ua tiav tau zoo.