1.What yog tus txheej txheem tseem ceeb ntawm SECC's Electrogalvanizing cov txheej txheem?
Substrate kev npaj thiab pretrice
Electrogalvanizing Cov Txheej Txheem (Electrolytic Deposition)
Tshaj tawm -} txheej kev kho (passivation, ntiv tes ua tsis kam, thiab lwm yam)
Tiav khoom qhuav thiab slitting, thiab tshuaj xyuas
2.What yog lub hom phiaj thiab cov ntsiab lus ua raws li cov txheej txheem tshem tawm (roj)?
Tshem cov roj rolling roj, lubricating roj, thiab lwm yam kev paug organic los ntawm cov txheej txheem dov.
Siv cov alkaline degreaser (xws li sodium hydroxide lossis sodium carbonate daws) lossis cov kuab tshuaj (xws li roj av lossis trichlorethylene) rau degrees.
Tswj qhov kub ntawm 40-60℃thiab siv txoj kev tshuaj tsuag lossis cov kev siv tshuaj ntxuav kab yees ua ke nrog kev ntxuav ultrasonic kom ntseeg tau tias muaj paug pov tseg. Yaug nrog dej huv kom tshem tawm ib qho seem degreecaser seem.
3.Qhov yog cov ntsiab cai tseem ceeb ntawm electrogalvanizing?
Zinc Deposition
Cov kauj ruam no cuam tshuam nrog kev sib txuam electrolytic, txo zinc ions kom muaj kev sib txuam, sib dhos, ntom zinc txheej. Secc feem ntau siv ob qho "Acid Galvanizing" lossis "alkaline galvanizing" cov txheej txheem. Acid Galvanizing yog qhov ntau siv tau siv ntau dua vim nws cov txheej txheem txheej txheem zoo nkauj thiab haum rau nyias txheej tawv (5-20μm ib sab muaj ntau nyob hauv Secc).
Cov Ntsiab Cai Tseem Ceeb
Tshuaj Electrolytic ntawm tes:
Anode: soluble zinc phaj (ntshiab zinc nrog kev ua yeeb yam ntawm ntau dua lossis sib npaug rau 99.95% kom ntseeg tau tias muaj kev ruaj khov ntawm zinc ions);
Cathode: Ua ntej {-}}- rolled steel ntawv (substrate, workpiece yuav plated);
Plating Solub: acidic zinc chloride (zinc suloride (zinc suller (Zinc
4.How tswj hwm cov txheej txheem tseem ceeb?
Qhov ceev tam sim no: 10-30 A / Density ntev uas yog qhov tsis tshua muaj txiaj ntsig; ib qho tuab tam sim no uas yog cov txiaj ntsig zoo heev nrog pinholes).
Da dej kub: 15 {- 40℃(aciding zinc plating yog qhov kub thiab txias
Cov Phe Da Dej Ph: 3.5.0 (borate buffering yog siv; tsis tshua muaj peev xwm nrawm dua tuaj yeem ua zinc hydroxide nag los, paug da dej).
Lub sijhawm npaj plating: kho raws li lub hom phiaj txheej tuab (piv txwv li 10μm txheej ntawm ib sab yuav tsum tau 2-5 feeb ntawm plating).
Chav ncig da dej thiab pom: cov kua dej tso ua ke nrog kev lim dej txuas ntxiv (5-10μm lim dej, thiab tiv thaiv "qhov tsis xws luag" hauv txheej.
5.Qhov dab tsi yog cov tseem ceeb ntawm cov txheej txheem SECC electrogalvanizing txheej txheem?
Cov txheej txheej zoo txheej: Electrolytic cov khoom siv tau tuaj yeem ua tiav cov duab txheej txheem (li cas los xij
Cov Txheej Txheem Yooj Yim: Cov Txheej Txheej (5-220μm) tuaj yeem kho kom haum los ntawm kev kho lub cev tam sim no thiab lub sijhawm kom tau raws li kev tiv thaiv corrosion sib txawv.
Ib puag ncig kev ua tau zoo xav tau kev txhim kho: tsoos chromate passivation muaj hexavalent chromium (uas yog tshuaj lom). Tam sim no, "chromium - pub dawb passiveation" (xws li maj mam txhawb nqa thiab ua raws li cov qauv ib puag ncig xws li ROHS.