Kub-dip galvanizing yog ib txoj hauv kev zoo los txhim kho qhov tsis kam ntawm steel grating rau atmospheric corrosion. Nws yog dav siv vim nws cov txheej txheem zoo heev, kev pab lub neej ntev, thiab tsis muaj kev saib xyuas raws li txheej txheej tiv thaiv. Qhov saum npoo ntawm cov txheej kub-dip galvanized steel grating muaj ntau yam tsis xws luag, xws li plating plating, striped feather dawb qauv, ultra-thick, ntxhib, tsaus, kua muag streaks, vaub kib tawg, siv lead ua zoo li tsa kab, "dawb xeb ", thiab lwm yam. Muaj ntau yam cuam tshuam thiab nws yog qhov nyuaj rau tswj. Hauv qhov no, peb tuaj yeem pib los ntawm kev ntxiv dag zog rau cov txheej txheem tswj, ntxiv los ntawm cov txheej txheem tsim nyog, txhawm rau txhim kho qhov zoo ntawm qhov kub-dip galvanized steel grating. Cov hauv qab no txheeb xyuas qhov ua rau thiab kev tswj cov txheej txheem ntawm qhov tsis xws luag nyob rau hauv kub-dip galvanized txheej ntawm steel gratings:
1. Nto pretreatment
Tsis zoo deg pretreatment ntawm steel gratings yog lub ntsiab yog vim li cas rau plating ploj (hlau raug). Steel gratings yog inevitably stained nrog cov xim los yog ntxhia roj thaum lub sij hawm tawm hauv lub Hoobkas, cia, tsheb thauj mus los, thiab ua. Qee lub sij hawm qhov teeb meem nrhiav pom qhov chaw ntawm qhov vuam yuav tsum tau coated nrog cov roj tshwj xeeb uas nyuaj rau kev ntxuav. Feem ntau cov tuam txhab tsis muaj cov txheej txheem degreasing thiab tsuas yog tso siab rau kev tshem tawm cov impurities saum npoo, uas tuaj yeem ua rau plating ploj (hlau raug). Lwm qhov xwm txheej yog tias cov pickling steel gratings yog cov concentrated, densely stacked, thiab hnyav thaum lub sij hawm pickling txheej txheem, ua rau hauv qab-pickling thiab kab clamping, los yog pickling concentration yog siab dhau, ua rau acid ntsev los nag rau saum npoo thiab grooves. Nyob rau hauv lub tank, yog hais tias cov dej tsis ntxuav los yog cov dej tsis ntxuav kom huv si, nws yog ib qho yooj yim mus ua kom to thiab virtual plating. Tsis tas li ntawd, vim kev laus thiab tsis ua haujlwm ntawm cov kuab tshuaj, thiab cov hlau grating tsis qhib rau lub sijhawm thaum lub sijhawm ziab, lossis lub sijhawm ziab yog tias nws ntev dhau lawm, cov micro-oxidation theem nrab yuav tshwm sim ntawm qhov chaw ntawm cov hlau thiab acidic hlau ntsev yuav raug tsim los npog saum npoo, uas tseem yuav yooj yim ua rau plating plating. Nws yog tshwj xeeb tshaj yog muaj nyob rau hauv cov huab cua uas muaj cov txheeb ze av noo thiab huab cua pos huab, thiab qhov teeb meem no yog feem ntau yooj yim overlooked. Tsis tas li ntawd, thaum siv cov kuab tshuaj kub-dip galvanizing, yog tias qhov sib piv ntawm cov feem ntau siv sib xyaw aqueous tov ntawm ZnCl2 thiab NH4Cl tsis raug, tsis muaj qhov taw tes eutectic yuav raug tsim. Tshwj xeeb tshaj yog thaum cov concentration siab dhau lawm, cov hmoov tshauv suav nrog tuaj yeem yooj yim tshwm sim hauv cov vuam kaum pob qij txha ntawm cov hlau gratings.
2. Lub thickness ntawm galvanized txheej tsis txaus
Yog hais tias lub thickness ntawm galvanized txheej ntawm cov hlau grating tsis ua raws li tus qauv yuav tsum tau, nws yuav ncaj qha cuam tshuam rau lub neej kev pab cuam ntawm cov khoom. Yog vim li cas rau qhov tsis txaus thickness ntawm galvanized txheej ntawm steel grating yog raws li nram no.
(1) Kev cuam tshuam ntawm zinc kua kub. Thaum qhov kub ntawm cov kua zinc qis dua 430 degrees, zinc-hlau diffusion tus nqi qis, thiab nws yog ib qho nyuaj rau tsim ib txheej hlau-zinc alloy txaus, thiab tag nrho cov txheej yog nyias. Thaum qhov kub ntawm 460 degrees, zinc txheej thickens. Thaum qhov kub thiab txias tseem nce ntxiv, cov kua zinc txheej zinc ua thinner thiab zinc txheej yuav thinner, yog li qhov kub ntawm zinc kua yuav tsum tau nruj me ntsis tswj kom muaj kev ruaj ntseg ntawm cov hlau grating zoo.
(2) Kev cuam tshuam ntawm lub sijhawm nyob ntawm cov hlau grating hauv cov kua zinc. Lub sijhawm nyob ntawm cov hlau grating hauv cov kua zinc muaj qee lub sijhawm, uas yog txiav txim siab raws li lub thickness ntawm steel grating. Raws li lub sij hawm galvanizing txuas ntxiv, lub thickness ntawm txheej yuav nce, tab sis ntau dhau lub sij hawm galvanizing yuav ua rau zinc txheej nkig, uas yuav cuam tshuam rau qhov zoo.
(3) Kev cuam tshuam ntawm txoj kev rho tawm cov hlau grating los ntawm cov kua zinc. Thaum cov hlau grating raug coj tawm ntawm cov kua zinc, nws yuav tsum tau coj tawm vertically. Thaum cov hlau grating raug coj tawm ntawm lub kaum sab xis, zinc txheej yuav nyias. Yog li ntawd, cov hlau grating yuav tsum tau coj tawm vertically thaum coj tawm ntawm lub lauj kaub zinc.
Cov saum toj no yog kev tsom xam ntawm defects ntawmkub-dip galvanized steelgrating qhia los ntawm tus editor. Kuv vam tias nws yuav pab tau koj. Yog koj xav paub lwm yam, koj ua tautiv tauj peb.
