Electroplating yog txheej txheem kho saum npoo uas siv cov khoom siv hluav taws xob los tso cov hlau nplaum uas yuav tsum tau ua rau ntawm qhov chaw plating.
Electroplating txoj cai: Hauv cov ntsev ntsev uas muaj cov hlau yuav tsum tau plated, plated matrix hlau yog siv los ua cathode. Los ntawm electrolysis, cations yuav tsum tau plated nyob rau hauv lub plating tov yog tso rau saum npoo ntawm cov hlau matrix los ua ib txheej.
Lub hom phiaj ntawm electroplating: kom tau ib txheej txheej uas txawv ntawm cov khoom siv matrix thiab muaj cov khoom tshwj xeeb los txhim kho corrosion kuj thiab hnav tsis kam ntawm qhov chaw.
Lub thickness ntawm txheej yog feem ntau los ntawm ob peb microns mus rau kaum ob ntawm microns.
Cov yam ntxwv ntawm electroplating: Cov txheej txheem electroplating thiab cov cuab yeej siv tau yooj yim, kev khiav hauj lwm yooj yim los tswj, thiab cov ntaub ntawv txheej yog dav thiab tus nqi qis. Yog li ntawd, nws yog dav siv nyob rau hauv kev lag luam thiab yog ib qho tseem ceeb txoj kev rau cov khoom nto kho.
Kev faib tawm ntawm cov coatings
Muaj ntau ntau hom coatings, uas yog cais raws li lawv cov kev ua tau zoo raws li hauv qab no:
(1) Cov txheej txheem tiv thaiv: xws li zinc, zinc-nickel, nickel, cadmium, tin, thiab lwm yam, raws li cov txheej txheem tiv thaiv corrosion uas tiv taus huab cua thiab ntau qhov chaw corrosion.
(2) Kev tiv thaiv-kho cov txheej txheem: Piv txwv li, Cu-Ni-Cr txheej, yog ob qho tib si zoo nkauj thiab tiv thaiv.
(3) Kho kom zoo nkauj plating: xws li Au thiab Cu-Zn imitation kub plating, dub chromium, dub npib tsib xee plating, thiab lwm yam.
(4) Hnav-tiv taus thiab hnav-txo cov txheej: xws li tawv chromium txheej, xoob qhov txheej, Ni-Sic txheej, Ni-graphite txheej, Ni-PTFE txheej txheej, thiab lwm yam.
(5) Cov txheej txheem hluav taws xob ua haujlwm: Piv txwv, Au txheej, Ag txheej, thiab lwm yam, tsis tsuas yog muaj kev ua haujlwm siab, tab sis kuj tiv thaiv oxidation, uas tuaj yeem zam kev tiv thaiv kev tiv thaiv.
(6) Sib nqus txheej: Piv txwv li, cov hlau nplaum mos muaj xws li Ni-Fe txheej thiab Fe-Co txheej; Lub zog sib nqus muaj xws li Co-P txheej, Co-Ni txheej, Co-Ni-P txheej, thiab lwm yam.
(7) Weldable txheej: xws li Sn-Pb txheej, Cu txheej, Sn txheej, Ag txheej, thiab lwm yam. Nws tuaj yeem txhim kho weldability thiab siv dav hauv kev lag luam hluav taws xob.
(8) Thaum tshav kub kub-resistant txheej: xws li Ni-W txheej, Ni txheej, Cr txheej, thiab lwm yam., nrog rau siab melting point thiab kub tsis kam.
(9) Kho cov txheej txheem: Qee cov khoom siv hluav taws xob raug nqi siab, lossis ua tiav cov khoom tsis zoo, siv electroplating los kho qhov ntev tuaj yeem txuag nqi thiab ua kom lawv lub neej ntev. Piv txwv li, cov txheej txheem Ni, Cr thiab Fe tuaj yeem kho.
Raws li cov khoom siv hluav taws xob ntawm cov txheej txheem thiab cov hlau matrix, nws tuaj yeem muab faib ua anode txheej thiab cathodic txheej. Thaum lub peev xwm ntawm cov txheej txheem txheeb ze rau cov hlau matrix yog qhov tsis zoo, txheej txheej yog anode, uas yog hu ua anode txheej, xws li galvanized txheej ntawm cov hlau. Thaum lub peev xwm ntawm cov txheej txheem txheeb ze rau cov hlau matrix yog qhov zoo, cov txheej txheem yog cathode, uas yog hu ua cathodic txheej, xws li cov nickel txheej thiab tin txheej ntawm cov hlau.
Raws li kev sib xyaw ua ke ntawm txheej txheej, txheej txheej tuaj yeem muab faib ua: txheej txheej txheej, xws li Zn lossis Cu txheej; ntau txheej hlau txheej, xws li Cu-Sn / Cr txheej, Cu / Ni / Cr txheej, thiab lwm yam.; txheej txheej, xws li Ni-Al2O3 txheej, Co-SiC txheej, thiab lwm yam.
Yog tias cais raws li cov txheej txheem ntawm cov txheej txheem, nws tuaj yeem muab faib ua ib txheej txheej hlau, txheej txheej txheej thiab cov txheej txheem sib xyaw.
