Dab tsi yog cov yam ntxwv ntawm cov txheej txheem chromium plating rau hluav taws xob cua sov raj
Tso lus
Dab tsi yog cov yam ntxwv ntawm cov txheej txheem chromium plating rau hluav taws xob cua sov raj
80. Dab tsi yog cov yam ntxwv ntawm cov txheej txheem chromium plating?
Teb: Ntxiv nrog rau kev sib koom ua ke nrog lwm txoj kev plating, cov txheej txheem chromium plating kuj muaj ntau yam tshwj xeeb: ① Lub ntsiab tseem ceeb ntawm chromium plating electrolyte tsis yog hlau chromium ntsev, tab sis muaj zog oxidizing chromic acid. ② Kev ua haujlwm tam sim no tsawg heev, feem ntau yog li ntawm 13 txog 16 feem pua, nrog rau qhov siab tshaj plaws tsuas yog li 23 feem pua. Yog li ntawd, thaum lub sij hawm chromium plating txheej txheem, ib tug loj npaum li cas ntawm hydrogen roj tso tawm, nqa tawm cov kua pos huab. Nws yog ib qho tsim nyog yuav tsum muaj lub tshuab nqus dej zoo thiab siv chromium pos inhibitors Ib qho me me ntawm cov anions ntxiv xws li SO42-, F -, SiF62- yuav tsum tau ntxiv rau cov tshuaj, thiab qee qhov nyiaj ntawm trivalent chromium yuav tsum tau khaws cia nyob rau hauv cov electrolyte Tsawg dispersion muaj peev xwm, rau qhov chaw nrog complex duab, pictorial anodes, tiv thaiv cathodes, thiab lwm yam yuav tsum tau siv kom tau ib tug zoo txheej. ⑤ Qhov kev siv tam sim no yog qhov siab heev, qee zaum kaum ob lub sij hawm siab dua qhov ceev tam sim no ntawm plating. Lub qhov hluav taws xob thaum lub sij hawm chromium plating txheej txheem kuj tseem siab, feem ntau xav tau lub hwj chim ntawm 12 volts los yog ntau tshaj, thaum lwm yam txheej txheem plating kuj siv tau 6 volt fais fab mov. ⑥ Cov kev tswj xyuas qhov kub thiab qhov ceev tam sim no yog nruj, thiab ob qho tib si yuav tsum tau sib koom ua ke. Qhov ceev tam sim no raug kho, thiab qhov kub thiab txias tuaj yeem hloov tau tsuas yog 1-2 degree . Qhov kub thiab txias yog tsau, thiab qhov ceev tam sim no hloov pauv los ntawm 2-3A / d ㎡ Cov anode siv rau chromium plating tsis yog xim hlau chromium, tab sis insoluble anodes xws li txhuas, txhuas-tin alloy, los yog txhuas-antimony alloy Vim yog qhov yooj yim passivation ntawm chromium txheej, nws yog feem ntau tsis tso cai rau lub hwj chim tawm midway thaum lub sij hawm electroplating txheej txheem. Cov ntsiab lus saum toj no qhia txog qee tus yam ntxwv ntawm chromium plating ntau lawm, uas yog nws qhov tshwj xeeb. Qhov tshwj xeeb no suav nrog cov ntsiab lus tshwj xeeb uas paub qhov txawv ntawm cov txheej txheem chromium plating los ntawm lwm cov txheej txheem electroplating. Txawm li cas los xij, chromium plating yog ib hom electroplating, thiab tau kawg, nws kuj muaj cov kev cai dav dav ntawm electroplating. Peb yuav tsum pib los ntawm kev xyaum ntau lawm, maj mam kawm thiab nkag siab tag nrho cov txheej txheem ntawm chromium plating, nkag siab thiab paub txog cov kev cai tshwj xeeb thiab thoob ntiaj teb ntawm cov txheej txheem chromium plating, kom ua haujlwm zoo dua.
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