Cov khoom ntawm Secc Galvanized Steel los xij, xws li corrosion tsis kam, ua haujlwm tsis muaj zog thoob plaws tag nrho cov txheej txheem, los ntawm cov khoom siv raw rau kev tsim khoom thiab kev ua haujlwm. Cov xwm txheej no tuaj yeem faib raws li hauv qab no:
1. Cov yam ntxwv ntawm lub substrate (txias - rolled steel ntawv)
Lub substrate yog lub hauv paus ntawm Secc, thiab nws cov khoom ncaj qha cuam tshuam cov kev ua tau zoo tag nrho tom qab galvanizing. Cov xwm txheej no feem ntau suav nrog:
Tshuaj lom neeg cov tshuaj:
Cov pa roj carbon (c), manganese (mn), phosphorus (p), thiab sulfur cov ntsiab lus ntawm substrate (xws li SpCC) yog qhov tseem ceeb heev. Piv txwv li, ntau dhau heev cov ntsiab lus carbon ntau ntxiv ua rau substrate hardness thiab txo cov qauv nyiaj stamping; Cov ntsiab lus tseem ceeb tshaj plaws Cov lus tuaj yeem tuaj yeem ua rau kub brittleness, tsis pom kev weldability.
Cov Khoom Siv Neeg Kho Tshuab:
Cov txiaj ntsig lub zog, tensile lub zog, thiab elongation ntawm lub substrate txiav txim siab txog kev txwv sab sauv. Tsis txaus elongation (piv txwv li, tsawg dua 30%) tuaj yeem ua rau tawg thaum lub sij hawm sib sib zog nqus teeb duab tom qab galvanizing; Ntau dhau siab tawm lub zog zog nce kev nce qib khoov teeb meem thiab tej zaum yuav ua rau cov txheej txheem txhuam tawm. Zoo Tshaj:
Nto roughness, nplai, roj stains, lossis khawb ntawm cov txheej txheem yuav ua rau pom ncaj qha rau lub galvanized txheej. Piv txwv li, yog tias nplai tsis raug tshem tawm los ntawm txheej, lub galvanized txheej yuav tsis ua kom zoo, ua rau muaj kev ua yeeb yam zoo, ua rau hauv zos tev lossis bulging.
Ii. Galvanized Txheej Cov Qauv
Secc cov kev ua tau zoo (xws li corrosion tsis kam) nyob ntawm feem ntawm galvanized txheej, thiab qhov tseem ceeb cuam tshuam nrog:
Plaster Thickness:
Txheej txheej tuab yog qhov taw qhia yuam kev ntawm corrosion tsis kam (feem ntau qhia raws li qhov hnyav ntawm zinc txheej ntawm ib qho chaw, piv txwv li E8-E8-E32, coj mus rau 1.4-7.0μμm). Cov kev sim ua kom xeb tsis txaus thiab ua kom muaj kev sib tw liab thaum ua kom muaj tshuaj tsuag ntsev thaum kuaj cov ntsev; Ntau dhau tuab, ntawm qhov tod tes, yuav nce nqi ntxiv thiab tuaj yeem ua rau "zinc accompulation" thaum khoov, ua rau kev tawg.
Txheej Txheej Txheej Txheem:
Tsis xwm yeem xa tawm tam sim no lub sijhawm cov txheej txheem galvanizing tuaj yeem ua rau cov npoo hlau sib txawv (piv txwv li ntawm cov kab corrosion tsis kam thiab txo qis kev txo hwj chim lub neej. Zinc Txheej Purity thiab Cov Qauv:
Imponents xws li coj (PB) thiab hlau (FE) nyob rau hauv txheej yuav txo nws ductility thiab ua rau tawg thaum lub sijhawm ua. Lub Zinc Txheej Crystal (piv txwv li, contstal qauv lossis equiaxed muaju) tuaj yeem cuam tshuam nws cov nplaum muaj zog yog nquag nquag rau kev tshem tawm.
III. Cov txheej txheem kev kho deg deg
Secc nto kev kho (piv txwv li, passivation, roj, thiab anti- Tus yuam sij rau kev txhim kho nws txoj haujlwm. Cov xwm txheej tshwj xeeb cuam tshuam qhov no suav nrog:
Passivation zaj duab xis hom thiab tuab:
Chromate passivation (cov txheej txheem ib txwm muaj) cov qauv kev tiv thaiv tuab, txhim kho corrosion tsis kam, tab sis yog cov phooj ywg ib puag ncig. Chromium {{1- Cov nyiaj seem dawb (piv txwv li, silanate) yog ib puag ncig ntau dua, tab sis tuaj yeem muab me ntsis qis dua corposion tsis kam. Zaj duab xis passus uas yog heev muab kev tiv thaiv tsis txaus, thaum ib zaj yeeb yaj kiab uas yog heev tuab yuav cuam tshuam cov xim txuas lossis vuam.
Anti -}} ntiv tes tuav kev kho kom zoo:
Qhov kev sib txuam thiab kev ua yeeb yam ntawm anti - ntiv tes ua cov tsho tiv no (piv txwv li, Secc {3) yog qhov tseem ceeb heev. Cov txheej txheem khuam lossis cov nplaum tsis zoo tuaj yeem ua rau cov ntiv tes nyob seem thiab hnav, ua rau poob ntawm anti - ntiv tes ua haujlwm. Roj Roj Thiab Hom:
Cov ntawv thov roj txwv tiv thaiv xeb thaum khaws cia thiab txhim kho covricity thaum ua. Txawm li cas los xij, kev roj av ntau dhau tuaj yeem cuam tshuam cov txheej txheej ntxiv (piv txwv li, cov xim pleev xim tsis zoo); Cov roj o tsis muaj peev xwm ua rau tawg ntawm cov ntawv hlau thaum lub sijhawm stamping vim tias kev sib txhuam ntau dhau.
IV. Cov Cuab Yeej Siv Ntau Lawm
Cov txheej txheem tswj lub sijhawm Galvanizing ncaj qha cuam tshuam cov kev ua tau zoo ntawm Secc, feem ntau suav nrog:
Kev tsis muaj electrolish:
Qhov ceev ceev tam sim no, kub, thiab electrolyte concentration thaum Galvanizing cuam tshuam rau tus nqi thiab kev sib tw ntawm zinc deposition. Piv txwv li, kev kub siab dhau tam sim no tuaj yeem ua rau cov txheej zinc me ntsis, muaj ntau porosity, thiab txo corrosion tsis kam; Kev ntsuas ntau dhau tuaj yeem ua rau cov txheej tsis sib xws tuab.
Substrate Pretreatment:
Qhov zoo ntawm degreasing (degreasing) thiab pickling (tshem tawm oxide nplai) ua ntej galvanizing yog qhov tseem ceeb. Ua tsis tiav txoj kev ua tsis tiav hauv cov nplaum tsis zoo ntawm zinc txheej thiab lub substrate; Ntau dhau pickling tuaj yeem ua rau muaj kev mob corrosion ntau dhau ntawm substrate nto, cuam tshuam rau cov khoom siv mechanical. Post -} kev:
Kev tsis raug thiab ntsuas lub sijhawm thaum hla kev hla thiab ziab yuav ua rau muaj kev lom zem ua tsis tau (piv txwv li cov dej sov uas ua tsis tau zoo) lossis cov dej noo, ua rau mob corrosion thaum cia.
V. cia thiab siv kev siv
Txawm hais tias tsim nyog tau secc yog tsim tawm, chaw cia khoom thiab siv tau cov xwm txheej tuaj yeem cuam tshuam nws qhov kev ua tau zoo, suav nrog cov hauv qab no:
Cia ib puag ncig:
Qaum, siab - pa roj (xws li cov pa roj corrosive (xws li cov neeg nyob hauv hiav txwv) tuaj yeem nrawm secc corrosion. Yog tias stacked yam tsis muaj kev cais (piv txwv li, sib cuag ncaj qha nrog ya raws), "tiv tauj corrosion" yuav tshwm sim, ua rau kom xeb.
Txoj kev ua:
Thaum lub sij hawm cov txheej txheem xws li stamping thiab dabtsi yog khoov, tsis muaj peev xwm siv lub zog loj tuaj yeem ua rau cov txheej zinc ntau dhau tuaj yeem ua rau nws cov nyhuv tiv thaiv. Kev kub siab thaum lub sij hawm vuam muaj peev xwm ua kom muaj kev puas tsuaj zaj duab xis, xav tau kev kho mob ntxiv kom tsis txhob muaj xeb ntawm Weld ntsiab lus.
Cov txheej thiab tshaj tawm -} kev:
Yog tias cov roj lossis cov tsis sib haum tsis raug tshem tawm ntawm Secc nto, tom qab txheej (piv txwv, tshuaj tsuag pleev xim) tuaj yeem ua rau nws cov nyhuv sib tiv thaiv. Ntsiab lus: Kev ua haujlwm Secc yog qhov ua haujlwm ntawm kev sib xyaw ua ke ntawm cov yam ntxwv ntawm cov yam ntxwv ntawm cov yam ntxwv, chaw kho hniav zinc, cov txheej txheem nto, thiab chaw khaws khoom thiab ua haujlwm. Substrate zoo yog qhov tseem ceeb, thaum lub zinc txheej thiab cov yeeb yaj kiab passivation muab cov tseem ceeb tuaj yeem lav ntawm corrosion tsis kam. Cov txheej txheem txheej txheem ntau lawm txiav txim siab ua tau zoo, thaum chaw khaws khoom thiab ua haujlwm cuam tshuam lub neej pabcuam kev ua haujlwm tiag tiag. Cov xwm txheej no yuav tsum tau txiav txim siab thaum xaiv cov khoom lag luam thiab siv los xyuas kom tau raws li cov ntaub ntawv tshwj xeeb, thiab lwm yam kev siv hluav taws xob kom pom zoo thiab corrosion tsis kam).