1. Puas yog galvanized steel coil tsim nyog rau kev ua vaj tsev ntawm cov cuab yeej siv tshuab? Dab tsi ntawm cov cuab yeej siv feem ntau yog siv hauv?
Teb: Galvanized steel kauj yog qhov tsim nyog rau kev ua vaj tsev nyob qis - mus rau nruab nrab - cov khoom siv lossis cov khoom siv nrog cov kev xav tau siab corrosion tab sis tus nqi rhiab heev. Nws muab cov khoom siv dag zog ntawm cov ntawv hlau nrog kev tiv thaiv corrosion ntawm cov txheej txheem galvanized, thaum ua tiav cov xim zoo nkauj -dawb xim hlau tsis muaj xim ntxiv. Cov kev siv feem ntau suav nrog: cov tshuab ua liaj ua teb (xws li lub tshuab ziab khaub ncaws thiab crusher vaj tsev), cov khoom siv cua tshuab (kiv cua vaj tsev), cov khoom siv hluav taws xob tswj (cov thawv ntim sab nraum zoov), cov tshuab siv hluav taws xob (cov tshuab hluav taws xob me me), thiab cov vaj huam sib luag tiv thaiv rau qee qhov chaw ua haujlwm neeg hlau. Txawm li cas los xij, rau cov khoom siv uas yuav tsum tau ua nruj me ntsis (xws li cov cuab yeej precision ntawm automotive ntau lawm kab) los yog cov khoom raug rau cov kua qaub thiab alkaline tshuaj muaj zog rau lub sij hawm ntev, galvanized steel coil yuav tsis haum raws li cov hlau tsis muaj steel los yog cov ntawv coated steel.
2. Muab piv rau cov khaub thuas zoo tib yam- cov ntawv dov nrog cov xim pleev xim, tus nqi yog dab tsi -cov txiaj ntsig zoo ntawm galvanized coil plhaub?
Teb: Qhov txiaj ntsig tseem ceeb nyob hauv kev tshem tawm cov txheej txheem tha xim thiab ntev - cov nqi tiv thaiv corrosion. Tej yam txias txias-cov ntawv dov yuav tsum tau degreasing, phosphating, pleev xim, los yog hmoov txheej, nce nqi kho mob los ntawm kwv yees li 20 mus rau 30 yuan ib square meter. Tsis tas li ntawd, khawb rau cov xim zaj duab xis thaum lub sij hawm kev thauj mus los lossis kev teeb tsa ua rau xeb sai ntawm cov hlau raug. Galvanized coils tuaj yeem raug stamped ncaj qha, khoov, thiab welded ua ntej siv, txuag cov khoom siv pleev xim thiab cov nqi zog. Rau huab hwm coj- cov khoom tsim, tag nrho cov nqi ntawm galvanized coil plhaub yog kwv yees li 15% mus rau 25% qis dua qhov txias- cov ntawv yob nrog cov xim pleev xim. Tsis tas li ntawd, zinc txheej muaj cov khoom tiv thaiv cathodic; khawb me me yuav tsis ua rau xeb kom kis tau, ua rau muaj kev saib xyuas zoo. Qhov no ua rau nws tshwj xeeb tshaj yog tsim rau cov khoom siv xa tawm mus rau qhov chaw muaj ntsev ntau hauv cov thawv ntim khoom thauj.
3. Cov teeb meem dab tsi tshwm sim thaum vuam thiab khoov cov txheej txheem thaum tsim cov txheej txheem ntawm cov galvanized coils? Yuav ua li cas lub corrosion kuj tom qab ua tau guaranteed?
Teb: Vuam puas ua rau cov galvanized txheej nyob rau hauv weld cheeb tsam, tsim zinc vapor (yuav tsum tau qhov cua zoo), thiab weld slag yooj yim ua rau localized electrochemical corrosion. Yog hais tias lub vojvoog dabtsi yog khoov me me los yog cov zinc txheej yog tuab heev (piv txwv li, 275 g / m² lossis ntau dua), micro- tawg yuav tshwm sim hauv zinc txheej ntawm sab nraud ntawm qhov khoov. Kev daws: Rau vuam, argon arc vuam lossis qis - silicon vuam hlau raug pom zoo. Tom qab vuam, zinc- nplua nuj primer (zinc cov ntsiab lus tsis tsawg dua 70%) yuav tsum tau siv rau qhov vuam thiab cua sov- thaj tsam cuam tshuam. Thaum dabtsi yog khoov, tswj qhov tsawg kawg nkaus dabtsi yog khoov vojvoog kom tsis pub tsawg tshaj ob zaug ntawm lub phaj thickness, thiab siv ib tug dabtsi yog khoov kab perpendicular mus rau dov kev taw qhia. Tsis tas li ntawd, xaiv tus neeg muag khoom siv "galvanized coil re{13}}forming" txheej txheem, lossis siv ua ntej-galvanized coils ua raws li zinc ntxiv, tuaj yeem ua kom muaj kev tiv thaiv corrosion tag nrho. Nrog rau kev tshaj tawm zoo-weld repainting, lub neej ntev ntawm lub plhaub sab nrauv tiav tuaj yeem ncav cuag 8 txog 10 xyoo.
4. Nyob rau hauv qhov chaw twg yog galvanized coil casings tsis tsim nyog siv? Dab tsi yog cov cim ntawm kev ua tsis tiav?
Teb: Peb qhov ib puag ncig hauv qab no tsis pom zoo: Ua ntej, ib puag ncig acidic heev (xws li nyob ze cov nroj tsuag tshuaj lossis cov chaw ua haujlwm electroplating, nrog tus nqi pH qis dua 4). Cov txheej zinc yuav yaj sai sai, feem ntau ua rau cov xeb dawb los yog xeb liab hauv ob peb lub hlis. Qhov thib ob, qhov chaw kaw nrog lub sijhawm ntev kub thiab av noo thiab qhov cua tsis zoo (xws li cov khoom siv hauv av) yog qhov ua rau "dawb xeb"- txheej tuab ntawm zinc oxide. Thaum qhov no tsis ua kom tag nrho cov hlau, nws cuam tshuam cov tsos thiab tsis tu ncua siv zinc txheej. Thib peb, kev sib cuag ncaj qha nrog cov hlau sib txawv xws li tooj liab thiab txhuas, thiab raug rau cov av noo electrolytes, yuav ua rau galvanic corrosion, accelerating zinc txheej noj. Nyob rau hauv cov cheeb tsam no, nws raug nquahu kom siv kub-dip galvanized steel nrog txheej txheej sealing, los yog stainless hlau lossis yas casing.
5. Thaum xaiv coil txheej cov ntaub ntawv rau cov khoom vaj tse, yuav ua li cas sib npaug thickness, txheej hnyav, thiab tus nqi kom ua tau raws li tus nqi zoo tshaj -kev ua tau zoo?
Teb: Ua ntej, yog hais tias lub tsev tsis dais siab - siv loads, lub hauv paus khoom thickness ntawm 0.8 hli mus rau 1.5 hli yog pom zoo. Ntau thickness ua rau tus nqi thiab molding nyuaj. Qhov thib ob, qhov hnyav txheej yuav tsum raug xaiv raws li kev siv ib puag ncig: 120 txog 180 g / m² (ob -}sided) rau cov khoom siv sab hauv tsev; 180 mus rau 220 g / m² rau ib nrab - sab nraum zoov (nrog los nag vaj tse); thiab 275 g / m² lossis ntau dua rau lub sijhawm ntev - tawm sab nraum zoov. Nco ntsoov tias ntawm tib txheej txheej hnyav, kub-dip galvanized coils muaj ob peb zaug siab dua corrosion dua li electro{15}}galvanized coils, yog li kub-dip galvanizing (qib xws li S350GD + Z) yuav tsum nyiam. Thaum kawg, yog tias lub vaj tsev zoo li nyuaj thiab xav tau kev vuam dav, xav txog "txias- cov ntawv ua tiav thiab tom qab ntawd kub-dip galvanized zuag qhia tag nrho," uas yog kim dua me ntsis tab sis zam qhov cuam tshuam ntawm kev kho cov vuam vuam. Feem ntau cov txee thiab cov tshuab ua liaj ua teb siv 1.0 hli kub -dip galvanized coils (180 g / m²), uas yog tus nqi tshaj plaws - kev teeb tsa zoo.