Vim li cas galvanized coils yuav tsum tau kho saum npoo? Nws daws teeb meem dab tsi?
Thaum galvanizing zoo tiv thaiv hlau, nws cov khoom siv hauv paus ua rau nws me ntsis muag thaum lub sijhawm thauj mus los thiab ua haujlwm tom ntej. Kev kho deg ua haujlwm peb lub hom phiaj tseem ceeb:
Muab kev tiv thaiv ib ntus los tiv thaiv "dawb xeb": Cov txheej txheej tshiab galvanized yog qhov yooj yim rau oxidation nyob rau hauv qhov chaw ntub dej, tsim cov hmoov dawb los yog thaj ua rau lub npe hu ua "xeb dawb." Kev kho deg ua haujlwm zoo li "lub tsho tiv nag," cais cov hlau los ntawm kev ya raws thiab tiv thaiv kev xeb dawb thaum thauj thiab khaws cia.
Txhim kho kev ua tau zoo thiab txo qhov khawb: Thaum lub sijhawm ua haujlwm (xws li stamping thiab dabtsi yog khoov), cov nplooj ntawv galvanized tau yooj yim khawb lossis tawg vim kev sib txhuam nrog cov pwm. Kev kho deg (xws li oiling) muab lubrication, txhim kho kev ua haujlwm, thiab txo cov pwm hnav.
Txhim kho cov haujlwm tshwj xeeb thiab nce tus nqi ntxiv: Rau cov ntawv thov tshwj xeeb, kev kho saum npoo tuaj yeem muab cov ntawv galvanized nrog cov peev txheej ntxiv. Piv txwv li, kev kho mob "tus ntiv tes tiv thaiv" siv rau ntawm lub casing ntawm cov khoom siv hluav taws xob tuaj yeem tiv thaiv cov kab laug sab laug los ntawm hws thaum tsim khoom lossis siv; thaum kho "phosphating" tuaj yeem txhim kho qhov adhesion ntawm cov xim tom ntej.
Dab tsi yog cov txheej txheem kev kho deg ntau tshaj plaws rau galvanized coils?
Raws li kev ua haujlwm thiab kev siv, cov kev kho mob tseem ceeb tuaj yeem muab faib ua tsib txoj hauv kev, raws li hauv qab no:
**Oil Txheej nkaus xwb:** Qhov no yog qhov kev kho ntau tshaj plaws thiab yooj yim. Ib txheej nyias ntawm xeb- cov roj tiv thaiv yog siv rau saum npoo siv cov roj pleev xim lossis cov tshuaj tsuag electrostatic, muab cov dej noo ib ntus thiab tiv thaiv khawb. Nws muaj versatility zoo.
**Chemical Passivation:** Cov tshuaj lom neeg hloov cov yeeb yaj kiab yog tsim rau ntawm zinc txheej txheej los ntawm cov tshuaj tiv thaiv. Nws cov corrosion kuj muaj zog dua cov roj txheej yooj yim thiab feem ntau yog ua ke nrog roj txheej rau kev tiv thaiv ob npaug.
**Kev kho tus ntiv tes tiv thaiv:** On to top of passivation, transparent organic film is coated. Qhov no tsis tsuas yog tiv thaiv xeb tab sis kuj ua rau saum npoo tiv taus cov ntiv tes thiab stains. Nws yog ib tug txheej txheem feature nyob rau hauv lub tsev thiab electronics industries.
**Tus kheej-Lubricating Treatment:** Cov yeeb yaj kiab no sib xyaw ua ke corrosion kuj thiab lubrication zoo heev, ua rau nws tshwj xeeb tshaj yog tsim rau kev ua haujlwm siab - qhov yuav tsum tau muaj qhov xav tau sib sib zog nqus nqus thiab sib sau ua ke.
** Phosphating Treatment:** Lub phosphate hloov dua siab tshiab zaj duab xis yog tsim nyob rau hauv zinc txheej nto, zoo heev txhim kho cov adhesion ntawm tom ntej spraying, hmoov txheej, thiab lwm yam txheej txheem.
Ob qho tib si passivation thiab oiling yog txoj kev tiv thaiv xeb, tab sis dab tsi yog qhov txawv ntawm lawv? Yuav xaiv li cas?
Yooj yim muab tso, passivation yog zoo li muab "bodysuit" rau ntawm txheej galvanized, thaum oiling zoo li muab tso rau ntawm " raincoat ." Lawv "waterproofing" mechanisms thiab cov teebmeem txawv.
Passivation: Ua ib qhov ntom ntom, dej-insoluble hloov dua siab tshiab zaj duab xis rau ntawm zinc txheej nto los ntawm cov tshuaj tiv thaiv, uas yog ib hom "kev tiv thaiv tshuaj." Thaum tsim, zaj duab xis no kuj muaj zog thiab tsis yooj yim wiped tawm, muab qee qhov kev tiv thaiv rau qhov chaw ntub dej. Txawm li cas los xij, txheej txheej passivation tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm kev vuam tom ntej lossis pleev xim.
Oiling: Lub cev ua raws li qhov chaw, tsim cov yeeb yaj kiab roj kom cais cov dej noo thiab oxygen, uas yog ib daim ntawv ntawm "kev tiv thaiv lub cev." Nws yog pheej yig, ntau yam, thiab tsis cuam tshuam rau kev ua haujlwm tom ntej (nws tuaj yeem raug tshem tawm nrog cov tshuaj ntxuav), tab sis cov roj zaj duab xis yog yooj yim so, thiab cov nyhuv tiv thaiv tsis muaj zog thaum lub sij hawm.
Kev Pom Zoo Kev Xaiv: Yog tias kev siv luv luv - lub sijhawm thiab muaj cov txheej txheem ntxuav tom ntej, xaiv "roj tsuas yog" yog kev lag luam ntau dua; Yog hais tias ntev - lub sij hawm cia los yog export shipping nyob rau hauv high - av noo ib puag ncig yog yuav tsum tau, ces ob tug tiv thaiv ntawm "passivation + oiling" yog ib tug ntau txhim khu kev qha kev xaiv.
Dab tsi yuav cuam tshuam rau kev kho mob yog tias vuam lossis pleev xim ua raws?
Qhov no yog ib lo lus nug tseem ceeb, vim tias kev kho saum npoo tsis raug tuaj yeem ua rau muaj kev puas tsuaj loj.
Kev cuam tshuam ntawm Vuam: Ob qho tib si roj films thiab passivation films yog cov insulators, uas tuaj yeem ua rau tsis ruaj khov tam sim no thaum vuam, ua rau muaj qhov tsis xws luag xws li spatter thiab porosity. Yog li ntawd, yog hais tias vuam yuav tsum tau, oiled cov khoom yuav tsum nruj me ntsis zam; cov khoom uas "tsis kho" lossis "passivated (paub tias tsis cuam tshuam rau vuam)" yuav tsum tau ua ntej.
Kev cuam tshuam rau kev pleev xim (Tshuaj / Hmoov Txheej): Rau cov chaw uas xav tau kev pleev xim, kev pleev xim kuj yog qhov tseem ceeb tsis muaj - tsis yog. Cov yeeb yaj kiab roj ua haujlwm zoo li tsis yog - nplaum txheej, ua rau nws nyuaj rau cov xim tom ntej kom ua raws thiab txawm ua rau nws tev tawm hauv thaj ua rau thaj loj. Qhov kev xaiv raug yog "phosphating," uas muab cov xim zoo nkauj adhesion. Yog tias cov khoom siv roj raug xaiv, lawv yuav tsum tau ntxuav kom huv si nrog tus kws tshaj lij degreasing ntxuav ua ntej pleev xim.
Dab tsi ntawm ib puag ncig thiab kev cia khoom yuav tsum tau txiav txim siab thaum xaiv qhov kev kho saum npoo?
"Kev xaiv kev kho mob yam tsis xav txog ib puag ncig yog lub sijhawm- siv, ua haujlwm hnyav, thiab ntxhov siab." Koj kuj yuav tsum ua tib zoo ntsuas cov ntsiab lus hauv qab no:
Lub sijhawm khaws cia thiab ib puag ncig kev thauj mus los: Yog tias cov khoom xav tau khaws cia ntev lossis thauj los ntawm hiav txwv (cov av noo siab, cov ntsev ntsev ntau), ces qhov "chromium-free passivation + oiling" ua ke yog qhov kev xaiv zoo tshaj plaws. Rau ib ntus cia hauv chav qhuav, tsuas yog yuav tsum tau roj.
Cov kauj ruam tom ntej: Raws li tau hais ua ntej, yog tias muaj cov txheej txheem vuam los yog pleev xim tom ntej, nws yog ib qho tseem ceeb kom sib txuas lus nrog tus neeg muag khoom kom meej thiab xaiv hom kev kho kom haum tshaj plaws; txwv tsis pub, tag nrho batch ntawm cov khoom yuav raug muab pov tseg.
Cov kev cai ib puag ncig: Cov kev daws teeb meem ib txwm muaj muaj hexavalent chromium, uas ua rau muaj kev phom sij rau ib puag ncig thiab tib neeg kev noj qab haus huv. Niaj hnub no, kev lag luam ntau thiab ntau dua (tshwj xeeb tshaj yog cov xa tawm mus rau EU raws li RoHS cov lus qhia) xav tau kev siv chromium- cov khoom lag luam pub dawb. Thov nco ntsoov xyuas qhov no thaum koj xaiv.