1.How yog zinc Txheej thickness cuam tshuam secc's corrosion tsis kam?
Yuav ua li cas nws cuam tshuam kev ua yeeb yam: cov tuab ntawm cov electrolytic zinc txheej ncaj qha txiav txim ncaj qha rau lub zog ntawm lub cev lub cev thiab txoj kev tiv thaiv anode lub sij hawm tiv thaiv. Lub thicker lub zinc txheej, ntev nws tiv thaiv corrosive kev tshaj tawm (oxygen, thiab ntsev ntev dua ntawm zinc) kav.
Kev nthuav qhia kev tshwj xeeb:
Cov pa secc Zinc Txheej Thickness yog 5-20μm (8-12μm muaj ntau). Yog hais tias lub thickness yog tsawg dua 8μm, dawb muaj xeb (zinc oxidation khoom ZN (Oh) ₂) yuav tshwm sim li 1-2 lub hlis nyob rau hauv ib puag ncig av.
Thickening lub zinc txheej (piv txwv li, 20μm lossis ntau dua) tuaj yeem txhim kho corrosion tsis kam los ntawm 30%, tab sis qhov no nce tus nqi electrolytic. Kev siv zinc ntau dhau kuj tseem tuaj yeem ua rau zinc tev lub sij hawm tom qab stamping. Yog li ntawd, qhov sib npaug yuav tsum tau raug ntau ntawm cov tuab thiab ua haujlwm.
2.How ua cov kev coj dawb huv thiab cov qauv ntawm zinc txheej cuam tshuam rau lub corrosion tsis kam ntawm Secc?
Cov nyhuv purity: lub purity ntawm electrolytic zinc txheej (qhov ntau ntawm impurities (tus nqi ntawm kev ua si xws li FE, thiab CD) cuam tshuam rau nws cov kev ua haujlwm electrochemical. Cov qib impurity siab nce ntxiv ntawm "micro - roj teeb ua lub ntsej muag (} accelerating} batterating)
High - Purity Dinc Txheej Txheem (Purity Heev lossis sib npaug thiab qeeb qeeb thiab qeeb qeeb ntawm xeb dawb.
Low-purity zinc coatings (Fe content >0.5%) yog kev cuam tshuam rau cov tub sab me me ua rau muaj kev tsis txaus ntseeg, ua rau cov tsos ntawm lub sijhawm luv luv.
Cov teeb meem txheej txheem: Cov electrolytic zinc txheej muaj ib kab crystal qauv. Yog tias lub muaju tau npaj tau xoob thiab muaj qhov hws tsis khov thiab muaj xeb ntawm cov av zom zaws thiab cov txheej txheem sib xyaw ua ke thiab cov txheej yas zom)
3.Yog li cas rau kev kho passivation dhau los muaj nyob rau corrosion tsis kam ntawm Secc?
Lub hauv paus ntsiab lus: "zaj yeeb yaj kiab hla" (0.1-} 1μm tuab) yog tsim ntawm Dinc Nto Kev Kho Mob (xws li chromate lossis chromium-pub dawb passivation). Cov yeeb yaj kiab no, muaj cov qauv ntsev / ntsev qauv, tsis yog txuas ntxiv rau cov kev sib xyaw ua kom zoo nkauj
Qhov cuam tshuam ntawm ntau hom passivation:
Chromate passivation (cov txheej txheem ib txwm muaj): Cov qauv no muaj cov yeeb yaj kiab tawg / Cru Composite, uas muaj cov tshuaj tiv thaiv corrosion zoo heev. Ntsig Zinc Secc Secc feem ntau qhia tau dawb xeb tom qab 12 {}}}}}}} 10 teev nyob rau hauv nruab nrab passivation tuaj yeem txuas qhov no mus rau 72-120 teev. Txawm li cas los xij, vim muaj kev lom zem ntawm CRRE, nws yog tam sim no tau hloov los ntawm chromium-dawb passivation.
Chromium - PUB DAWB (ib puag ncig cov txheej txheem phooj ywg): xws li Silane Passivation thiab Titanate Passivation thiab Titanate Passivation. Lub corrosion tsis kam ntawm cov yeeb yaj kiab tsim yog qis dua qhov uas chromate (dawb xeb tshwm sim hauv NSS kev tiv thaiv thiab yog qhov tseem ceeb tam sim no.
4.Yog dab tsi ua rau anti {{- Cov tshuaj tu ntiv tes muaj nyob rau ntawm cov xeb tsis kam ntawm Selc?
Lub hauv paus ntsiab lus: Thov ib qho organic anti -} Tus ntiv tes los ntawm cov ntiv tes uas tseem muaj "organic teeb meem" rau cov duab zinc thiab cov yeeb yaj kiab passivation.
Kev Cuam Tshuam: Secc kho nrog anti {{{{-}}- n2- Tus qauv sib xws xws li cov khoom siv hauv tsev thiab hluav taws xob chassis).
5.Txoj kev puas tsuaj yuav tshwm sim thaum ua kev ua thiab kev teeb tsa?
Kev puas tsuaj (feem ntau)
Kev tuag ntau dhau los yog cov npoo ntse thaum khawm stamping thiab khoov tuaj yeem ua rau cov txheej zinc ib mus rau tev thiab cov yeeb yaj kiab passivation kom tawg, ua rau cov hlau substrate. Kev sib tsoo thiab kev sib txhuam thaum lub sij hawm installation kuj tseem ua rau cov khawb hauv zos. Cov cheeb tsam puas no ua "corrosion pib cov ntsiab lus." Vim tias "me me anode (sprosed hlau) {{{{{{{} cov hlau substrate yuav nrawm nrawm (pitting los yog kev kis mus rau ib cheeb tsam ib puag ncig.
Vuam / Cov Txheej Txheem Ua Si
Lub siab kub thaum lub sij hawm vuam tuaj yeem hlawv tam sim zinc txheej thiab passivation zaj duab xis ze ntawm Weld. Yog tsis kov -}}} - plating, Weld leeg yuav dhau los ua ib qho loj corrosion hotspot.
Qhov khoob hauv Bolted sib txuas (yog tias tsis tau muab ntim) tso rau dej nag thiab hmoov av, ua rau "corrodes 3-5 zaug sai dua li qhov chaw raug.