Chromium plating
1. Lub hauv paus ntsiab lus ntawm cov txheej txheem
Chromium plating yog txheej txheem ntawm tso ib txheej ntawm chromium rau saum npoo ntawm lub hauv paus hlau los ntawm electrolysis. Qhov tsim ntawm chromium txheej yog nyob ntawm qhov txo qis ntawm chromium ions hauv cov tshuaj chromate rau cov hlau chromium thiab nws cov deposition ntawm cathode (xws li lub workpiece) nyob rau hauv qhov kev txiav txim ntawm hluav taws xob tam sim no. Cov txheej txheem chromium plating feem ntau yog muab faib ua ob pawg: zoo nkauj chromium plating thiab ua haujlwm chromium plating, nrog rau yav dhau los tsom rau qhov ci thiab zoo li qub thiab yav tas los hais txog cov khoom xws li hnav thiab corrosion kuj.
2. Cov yam ntxwv ua tau zoo
- Siab hardness: chrome plating muaj hardness siab heev, thib ob tsuas yog pob zeb diamond, uas tuaj yeem txhim kho qhov hnav tsis kam ntawm cov khoom ua haujlwm.
- Zoo corrosion kuj: chrome plating qhia tau hais tias zoo corrosion kuj nyob rau hauv ntau qhov chaw, tshwj xeeb tshaj yog tiv thaiv atmospheric corrosion thiab tej yam tshuaj lom neeg.
- Zoo gloss: hniav chrome plating tuaj yeem muab daim iav ua haujlwm -zoo li luster, txhim kho cov khoom qib.
3. Cov chaw thov
Chrome plating yog siv dav hauv tsheb, tsheb, tsheb kauj vab, tsheb kauj vab thiab lwm yam kev thauj mus los, xws li lub cav piston rings, lub tog raj kheej liner, bearings, thiab lwm yam, nrog rau cov cuab yeej kho vajtse, cov cuab yeej, kho kom zoo nkauj thiab lwm yam.
4. Qhov zoo thiab qhov tsis zoo
Qhov zoo yog nws cov hardness tsis tshua muaj siab thiab zoo corrosion kuj, uas txhim khu kev pab lub neej ntawm workpiece. Txawm li cas los xij, cov txheej txheem chromium plating muaj qee qhov kev ua qias tuaj rau ib puag ncig, thiab tus nqi kuj tseem siab, thiab cov kev cai ua ntej rau cov khoom siv hauv paus yog nruj.
Nickel plating
1. Txheej txheem txheej txheem
Nickel plating yog txheej txheem ntawm kev tso ib txheej ntawm nickel rau saum npoo ntawm lub hauv paus hlau los ntawm electrolysis. Nickel plating tov feem ntau yog npib tsib xee sulfate los yog npib tsib xee chloride system, ntxiv qhov tsim nyog tus nqi ntawm additives los tswj cov kev ua tau zoo thiab cov tsos ntawm txheej. Cov txheej txheem nickel plating tuaj yeem muab faib ua npib tsib xee plating, semi- ci nickel plating, npib tsib xee dub thiab lwm hom kom tau raws li cov ntawv thov sib txawv.
2. Cov yam ntxwv ua tau zoo
- Zoo abrasion kuj: npib tsib xee plating muaj siab hardness thiab abrasion tsis kam, haum rau daim ntaub ntawv uas yuav tsum tau tiv thaiv mechanical puas.
- Muaj zog corrosion kuj: npib tsib xee plating txheej qhia tau hais tias zoo stability nyob rau hauv ntau yam corrosive media, tshwj xeeb tshaj yog alkaline corrosion kuj muaj kev ua tau zoo heev.
- Zoo hluav taws xob conductivity thiab weldability: npib tsib xee plating muaj hluav taws xob conductivity zoo thiab yooj yim rau welding, haum rau cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob.
3. Cov chaw thov
Nickel plating yog dav siv hauv electronics, automotive, aerospace, tshuaj, khoom siv kho mob thiab lwm yam kev lag luam. Xws li cov pins ntawm cov khoom siv hluav taws xob, tsheb cav qhov chaw, aerospace structural qhov chaw, cov khoom siv tshuaj, corrosion- txheej tiv thaiv thiab kev kho deg ntawm cov khoom siv kho mob.
4. Qhov zoo thiab qhov tsis zoo
Qhov zoo ntawm npib tsib xee plating yog nws zoo hnav tsis kam, corrosion kuj thiab kev ua tau zoo. Txawm li cas los xij, cov txheej txheem nickel plating kuj muaj teeb meem ib puag ncig, thiab lub thickness thiab uniformity ntawm txheej plating yog ib qho nyuaj rau tswj, yuav tsum tau nruj txheej txheem tswj.
Galvanizing
1. Lub hauv paus ntsiab lus ntawm cov txheej txheem
Galvanizing yog txheej txheem ntawm tso ib txheej ntawm zinc rau saum npoo ntawm lub hauv paus hlau los ntawm electrolytic los yog kub dip galvanising. Electrolytic zinc plating siv hluav taws xob tam sim no los txo cov zinc ions rau cov hlau zinc thiab tso rau ntawm cathode; kub-dip galvanizing yuav immersing lub workpiece nyob rau hauv molten zinc los ua ib tug alloy txheej ntawm zinc thiab lub hauv paus hlau.
2. Cov yam ntxwv ua tau zoo
- Kev tiv thaiv zoo heev - cov khoom siv corrosion: zinc txheej tuaj yeem tsim cov yeeb yaj kiab tiv thaiv ntom ntom ntawm zinc oxide nyob rau hauv ib puag ncig corrosive, tiv thaiv kev yaig ntxiv ntawm cov xov xwm corrosive.
- Pheej yig: Piv rau chromium thiab npib tsib xee plating, zinc plating tsis tshua kim thiab cov txheej txheem yooj yim, ua kom yooj yim rau kev ua tiav ntau lawm.
- Zoo adhesion thiab processability: zinc txheej yog ruaj khov rau cov hlau puag thiab yog ib qho yooj yim rau txheej txheem thiab kho.
3. Cov cheeb tsam ntawm daim ntawv thov
Zinc plating yog siv dav hauv kev tsim kho, kev thauj mus los, hluav taws xob, kev sib txuas lus thiab lwm yam haujlwm. Piv txwv li, cov yeeb nkab steel, steel phaj, bolts, thiab lwm yam rau kev tsim kho, lub cev tsheb thiab cov khoom siv choj hauv kev thauj mus los, cov yees thiab cable txuas hniav hauv kev siv hluav taws xob thiab kev sib txuas lus.
4. Qhov zoo thiab qhov tsis zoo
Qhov zoo ntawm zinc plating yog nws tus nqi qis, zoo heev corrosion kuj thiab zoo processability. Txawm li cas los xij, qhov tsis tshua muaj hardness thiab abrasion tsis kam ntawm zinc coatings ua rau lawv tsis haum rau cov ntawv thov uas lawv raug rau cov neeg kho tshuab siab thiab tsim kua muag. Tsis tas li ntawd, cov txheej txheem kub dip galvanizing tuaj yeem tsim cov zinc slag thiab zinc fumes, uas muaj kev cuam tshuam rau ib puag ncig.
Chrome plating, npib tsib xee plating thiab zinc plating yog peb qhov tseem ceeb ntawm kev kho cov thev naus laus zis, txhua tus muaj cov yam ntxwv ua tau zoo thiab thaj chaw ntawm daim ntawv thov. Chromium plating paub txog nws cov hardness siab heev thiab zoo corrosion kuj, thiab yog haum rau lub sij hawm uas siab mechanical hnav thiab corrosive ib puag ncig yuav tsum tau tiv thaiv; npib tsib xee plating yog nyiam rau nws zoo abrasion thiab corrosion kuj thiab processability, thiab yog dav siv nyob rau hauv electronics, automotive, aerospace, thiab lwm yam .; thiab zinc plating yog qhov kev xaiv zoo tshaj plaws rau kev tsim kho, kev thauj mus los, thiab lwm yam, vim nws cov nqi qis, zoo corrosion kuj, thiab kev ua haujlwm zoo.
Thaum xaiv cov cuab yeej kho deg, kev txiav txim siab zoo yuav tsum tau muab rau qhov tshwj xeeb siv ib puag ncig thiab kev ua haujlwm ntawm cov khoom ua haujlwm. Nyob rau tib lub sijhawm, kev saib xyuas yuav tsum tau them nyiaj rau kev tiv thaiv ib puag ncig thiab teeb meem kev txhim kho kom ruaj khov, thiab sim ua kom tsis txhob muaj kuab paug ib puag ncig thiab pov tseg cov peev txheej hauv cov txheej txheem tsim khoom.
