Dab tsi yog lub corrosion tsis kam ntawm Spcc - gi?

Dab tsi yog lub corrosion tsis kam ntawm Spcc - gi?
Cov corrosion tsis kam ntawm Spcc - gi (kub} Nws corrosion tsis kam yog cuam tshuam los ntawm cov yam xws li cov tuab tuab (qhov hnyav) ntawm zinc txheej, thiab txheej txheem kev kho mob. Zuag qhia tag nrho, nws yog nyob "me ntsis rau qhov zoo." Cov yam ntxwv tshwj xeeb yog li hauv qab no:
1. Cov ntsiab cai tseem ceeb ntawm kev tiv thaiv corrosion: "kev tiv thaiv kev tiv thaiv anodic" ntawm zinc txheej
Zinc muaj qhov qis dua electrode peev xwm tshaj li hlau (SPCC substrate yog tsawg- carbon hlau). Thaum lub zinc txheej ntawm cov hlau saum npoo yog puas (piv txwv li, los ntawm cov yeeb yaj kiab los yog zinc hydroxide), yog li maj mam nqes rau corrosion ntawm cov hlau substrate. Qhov no "kev fij tseg" kev fij "cov nyhuv yog tus tseem ceeb ntawm zinc txheej ntawm cov txheej corrosion.
2. Qhov tseem ceeb rau Spcc -} gi txoj kev corrosion tsis kam
Zinc Txheej ceeb thawj (tuab)
Cov tuab tuab lub zinc txheej, qhov ntau dua cov corrosion tsis kam. Cov tes taw zinc ntau yam ntawm 30g / m² (kwv yees li 5μm ib sab), piv txwv li 40μm ib sab), sib xws rau cov kev pab sib txawv:
Tsawg zinc co co co co co) (piv txwv li z30-z50): Tsim nyog rau cov khoom siv hauv tsev hauv tsev), nrog kev xeb tsawg los yog noo noo.
Nruab Nrab - High High High High High High High Fining
Cov Qauv Kev Kho Deg
Post {{0- Kev kho mob yog feem ntau ua tom qab galvanizing kom ntxiv txhim kho corrosion:
Chromate Passivation (c): Ua cov duab uas muaj nuj nqis ua ntej ua rau cov khoom siv zinc (ib txheej corrosion), muaj ntau yam tsis kam los ntawm 2-3 zaug.
Anti {- Nkawm ntiv tes ua kom cov txheej txheem passivation, muab ob qho tib si corrosion tsis kam thiab anti ntiv tes, haum rau sab nrauv ntawm cov khoom siv hauv tsev. Oiling (O) muab luv -}}}}}}}}}}}}}}}}}}}}}},,, tab sis yuav tsum tau degreing ua ntej siv los tiv thaiv txheej los yog vuam.
Kev Siv Ib puag ncig
Qhuav sab hauv tsev: Txawm tias muaj zinc co co co tsho muaj peev xwm nyob twj ywm ntev.
Ntht, siab {- Cov chaw ua noj thiab chav ua noj):} - siab zinc txheej ntxiv rau cov neeg passivation ntxiv; Txwv tsis pub, dawb xeb yog yuav ua rau.
Cov txheej txheem sib zog ua kom haum (xws li thaj chaw ntug dej hiav txwv Lwm cov txheej ntxiv (xws li tshuaj tsuag xim) yuav tsum muaj kev tiv thaiv; Galvanizing ib leeg tsis zoo li los tiv taus ntev - lub corrosion.
III. Corrosion Resistance sib piv ntawm Spcc - gi
Superior rau cov pa txias txias - rolled steel txheej ntxiv) tuaj yeem tiv taus ib hlis ntev rau xyoo mus rau xyoo. Intance {{5 5}}}}}}}}}}}}}}} - 2 zaug ntawm GI; Zinc-Nickel Txheej muaj ntau dua corrosion tsis kam thiab yog qhov tsim nyog rau ib puag ncig corrosive (xws li automotive chassis).
Ua tsis tau zoo rau Stainless Hlau: Stainless hlau (xws li 304) cov qauv ua yeeb yaj kiab siv dua li zinc plating, tab sis kuj yog tus nqi siab dua.
IV. Lub ntsiab
Spcc -} gi txoj kev tiv thaiv corrosion "thiab yog qhov tsim nyog rau kev tiv thaiv corrosive (xws li ib puag ncig uas qhuav huv si). Los ntawm kev xaiv zinc txheej tuab thiab kev kho mob nto, nws tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm cov ntawv thov thiab muaj kev lag luam feem ntau. Txawm li cas los xij, nyob rau hauv ib puag ncig nrog cov ntsev siab siab, thiab muaj kuab paug siab, kev tiv thaiv zoo, yuav tsum muaj kev tiv thaiv ntxiv rau nws lub neej.