1.What yog lub ntsiab cai tseem ceeb ntawm theem cua txias?
Thaum lub workpiece raug tshem tawm los ntawm kub - dip txheej (piv txwv li cov hlau zinc), li 440 {} Yog tias txias txias, tus nqi qeeb qeeb tuaj yeem ua rau:
Kev loj hlob ntau dhau ntawm cov nyom loj hlob tsis pub dhau cov zinc txheej, ua cov coarse ncej, uas txo qhov nyuaj thiab tawv ntawm cov txheej;
Nruam cov kua muag ntawm cov fe - zn alloy txheej ("tshaj {{{
Ua kua Zinc ntws los yog cov nro, ua rau cov txheej tsis sib xws (piv txwv li, ntxiv zuj zus ntawm cov ces kaum thiab thinning ntawm cov tiaj tiaj).
Yog li ntawd, cov theem cua txias yuav tsum tau tswj cov dej khov kho sai (dej txias rau kev cuam tshuam nrog cov txheej txheem zinc
2.What yog lub hom phiaj tseem ceeb ntawm txias?
Kev tswj cov txheej tuab tuab thiab kev sib xyaw ua ke: kev tiv thaiv kom tsis txhob muaj cov qauv zinc, thiab ua kom tuab li qhov kev ua haujlwm tsawg kawg nkaus
Kev ua kom zoo dua txheej txheej cov khoom siv: Zinc txheej nrog cov nplej uas zoo dua li cov coarser nplej (piv txwv li cov txheej tsis zoo yuav tawg thaum lub workpiece yog khoov).
Tiv thaiv Alloy embrittlement: cuam tshuam txog qhov fe {{
3.Yog li cas yog lub ntsiab lus tseem ceeb ntawm passive?
Cov khaubncaws sab nraud povtseg dawb thiab cov pa roj oxygen, thiab cov pa roj oxide (Zinco) Cov khoom lag luam no tsis tuaj yeem tsim cov txheej txheem npliag thiab yuav ua rau cov txheej txheem zinc txuas ntxiv thiab ua kom nrawm dua ({{2} {2} {2}- Reb).
Thaum lub sij hawm passivation theem, cov hauj lwm txias yog raus hauv tus neeg sawv cev passivators, xws li cro₃ passion, xws li chromium {}} cov neeg hla dej dawb). Cov tuab neeg ntom, ruaj khov inorganic / organic composite zaj duab xis (passivation zaj duab xis (passivation zaj duab xis (passivation zaj duab xis (passivation zaj duab xis (
Chromate Passivation: Zn²⁺ ntawm Zinc Nto Reacts nrog cr₂o₇²⁻ thiab h⁺ nyob rau hauv passivating passion tus neeg sawv cev los ua crining los ua cr (huag) ₃ lossis cr₂o₃). Cov yeeb yaj kiab ZN²⁺ muaj cov qauv nthab muaj cov txheej txheem tuab, cais cov txheej zinc los ntawm cov xov xwm sab nraud (dej, oxygen, thiab lwm yam).
Chromium - pub dawb passiveation (xws li cov pab pawg ua kom zoo nkauj nrog cov kab ke hydrox Hloov chaw, Titanium {{4 {4 {}}} ions rease nrog zinc txheej los tsim cov tshuaj pleev xim rau oxide, uas tseem ua raws li lub xeb xeb.
4.Qhov dab tsi yog lub hom phiaj tseem ceeb ntawm passivation?
Qhov tseem ceeb txhim kho Corrosion Kuj: Tus passivation zaj duab xis thaiv kev sib cuag ntawm cov chaw ua haujlwm zinc uas muaj peev xwm qeeb rau lub hlis lossis ntau xyoo tom qab them passive).
Txhim kho cov nplaum sab saum npoo: thaj chaw polarity lossis roughness ntawm cov zaj duab xis passive ntawm cov txheej txheem txheej txheem tom ntej (xws li cov xim av thiab tshuaj txau yas) thiab tiv thaiv kev txiav cov txheej txheem.
Txhim kho tsos thiab stain rillionance: cov neeg ua yeeb yaj kiab passivitits ib qho kev ua yeeb yam bluish} dawb, lossis xim dub (txhim kho kev sib txawv ntawm workpiece lub ntsej muag. Cov zaj duab xis du tiv taus plua plav thiab roj stains, ua rau nws yooj yim dua.
5.Qhov twg yog tus tseem ceeb ntawm cov khoom siv txias thiab passivation theem?
Lub kauj ruam txias yog qhov ua ntej rau "kom cov txheej txheem ntawm Galvanized" (corrosion tsis zoo thiab adhesion). Kev sib xyaw ntawm ob qho kev ua kom kub kub- dip kev ua haujlwm, tab sis kuj ua haujlwm rau sab nraum zoov lub hom phiaj ntawm "tus nqi qis thiab lub neej ntev".