1.Dab tsi yog lub ntsiab txhais ntawm "hauv qab- nthuav tawm qhov tsis xws luag"?
Nyob rau saum npoo ntawm galvanized steel los xij, zinc txheej tsis tuaj yeem npog tag nrho, uas ua rau muaj kev cuam tshuam hauv cheeb tsam ntawm cov hlau substrate. Cov chaw raug pom no feem ntau yog grey tsaus, txawv ntawm ib puag ncig cov zinc txheej ci ntsa iab, thiab tej zaum yuav tshwm sim li dots, kab, los yog flakes.
2.Dab tsi yog ib co teeb meem nrog cov khoom tuaj (substrates)?
Cov pa paug ntawm qhov chaw: Cov roj rolling residual, roj, xeb -cov roj tiv thaiv, thiab lwm yam, ntawm cov hlau substrate nto tsis huv. Cov roj stains tsim ib qho kev thaiv ntawm cov hlau substrate thiab molten zinc, cuam tshuam cov ntub dej thiab cov tshuaj tiv thaiv ntawm zinc nrog steel phaj.
Residual hlau oxide nplai: Yog hais tias cov hlau oxide nplai los ntawm kub dov tsis tau tshem tawm tag nrho thaum lub sij hawm pickling, qhov tsis huv, xoob oxide txheej yuav cuam tshuam cov tshuaj tiv thaiv galvanizing.
Cov khoom txawv teb chaws indentation: Thaum lub sij hawm dov, hlau filings, plua plav, los yog lwm yam khoom txawv teb chaws raug nias rau hauv cov hlau phaj nto. Cov ntsiab lus no muaj cov adhesion tsis zoo thiab tuaj yeem kis cov zinc molten.
Kev mob hnyav ntawm qhov chaw: Lub substrate nws tus kheej muaj xeb, qhov, lossis khawb tob. Cov geometry thiab qhov chaw saum npoo ntawm cov cheeb tsam no tsis zoo rau zinc adhesion.
3.Dab tsi yog qee qhov teeb meem tshwm sim hauv kev kho mob ua ntej (ntu tu)?
Kev tu tsis txaus: Ib lossis ntau cov kauj ruam hauv alkaline degreasing, electrolytic tu, txhuam, thiab ntxuav cov txheej txheem ua tsis tiav. Piv txwv li:
Tsis txaus alkaline concentration lossis kub.
Hnav lossis tsis txaus siab ntawm cov txhuam hniav.
Clogged spray nozzles, uas ua rau kev tu tsis tiav ntawm qee qhov chaw.
Kev ziab tsis tiav: Cov dej seem seem ntawm cov phaj hlau tom qab ntxuav yuav vaporize tam sim ntawd thaum nkag mus rau hauv zinc da dej, ua rau cov zinc txheej tawg.
4.Dab tsi yog qee qhov teeb meem tshwm sim hauv cov txheej txheem galvanizing?
Abnormal Zinc Liquid Composition:
Cov ntsiab lus txhuas ntau dhau: Aluminium yog ib qho tseem ceeb alloying hauv kub -dip galvanizing, tab sis yog tias nws cov ntsiab lus siab dhau (piv txwv li, ntau tshaj 0.25% hauv cov zinc txheej ntshiab), nws yuav tsim ib txheej tuab heev thiab ntom Fe2Al5 inhibitory txheej, uas yuav ua rau cov zinc adhesion ua rau cov txheej txheem thinner.
Cov Zinc Dross ntau dhau: Cov kab ntau dhau los yog cov dej hauv qab hauv lub lauj kaub zinc yog nqa mus rau saum npoo los ntawm cov hlua hlau, tsim cov ntsiab lus - zoo li qhov tsis xws luag.
Cov txheej txheem tsis tsim nyog:
Zinc Kua Kub Kub: Yog tias qhov ntsuas kub qis dhau, cov kua zinc yuav muaj cov dej tsis zoo thiab ntub dej; Yog tias qhov kub thiab txias dhau lawm, nws yuav ua rau cov hlau hnyav dua -zinc cov tshuaj tiv thaiv thiab tsim cov dej hauv qab.
Strip Steel Nkag Kub Kub: Yog tias cov sawb hlau nkag mus rau hauv lub lauj kaub zinc ntawm qhov kub thiab txias, qhov kub ntawm zinc kua ntawm nws qhov chaw yuav poob, cuam tshuam rau fluidity thiab ua rau cov zinc txheej tsis sib xws.
Cov Teeb Meem Cua Riam:
Thaum cov riam cua feem ntau tswj cov zinc txheej tuab, yog tias lub nozzle tau txhaws los yog qhov chaw tsis raug, ua rau cov cua hauv zos muaj zog heev, nws tuaj yeem tshuab molten zinc uas tseem tsis tau khov, ua rau cov kab los yog strip -zoo li raug cov zinc txheej.
5.Dab tsi yog qee qhov teeb meem nrog cov cuab yeej siv thiab nws txoj haujlwm?
Slagging nyob rau hauv lub snout: Zinc tshauv (zinc oxide) los yog zinc dross accumulates nyob rau hauv lub puab phab ntsa ntawm lub snout saum lub zinc lauj kaub, ntog thiab adhering rau lub strip nto, hindering galvanizing ntawm lub point.
Slagging ntawm stabilizing yob thiab submerged yob: Slagging rau ntawm qhov chaw ntawm cov yob rau hauv molten zinc tuaj yeem khawb cov zinc txheej thaum pib ntawm cov kab nrib pleb thaum ua haujlwm, lossis ncaj qha mus rau cov kab nrib pleb.
Sawb kev vibration: Cov kab ntau lawm tsis ruaj khov, nrog rau cov sawb vibrating hauv lub lauj kaub zinc, yuav cuam tshuam cov txheej txheem ntawm zinc txheej.