1. Puas muaj kev txwv tsis pub muaj kev sib xyaw ntawm cov khoom sib txawv ntawm cov galvanized coils hauv warehouses?
A: Raws li kev lag luam- qauv kev coj ua khoom lag luam, galvanized coils ntawm cov khoom sib txawv thiab ntau yam yuav tsum tau muab sib cais. Txawm li cas los xij, lo lus feem ntau tsis yog qhov txwv tsis pub, tab sis yog qhov yuav tsum tau ua ntawm "yuav tsum tau muab sib cais." Raws li cov hauv paus ntsiab lus ntawm kub-dip galvanized steel stacking, nyob rau hauv cov xwm txheej ntawm kev ruaj khov stacking thiab ua kom muaj kev ruaj ntseg, cov ntaub ntawv yuav tsum tau stacked raws li ntau yam thiab specifications, nrog rau ntau yam stacked nyias los tiv thaiv kev tsis meej pem thiab ntoo khaub lig-corrosion. Cov kev cai cia rau xim-coated galvanized steel coils kuj qhia meej tias ntau hom xim-coated galvanized steel coils yuav tsum tau muab sib cais kom tsis txhob muaj kev ntxhov siab thiab tiv thaiv corrosion. Rau txias- dov thiab kub- dov galvanized coils, nws raug nquahu kom siv cov khoom lag luam kom muab lawv cais nrog qhov deb tsis pub tsawg tshaj 1 meter. Yog li ntawd, txawm hais tias tsis muaj ib qho kev cai uas "tshem tawm kiag li" sib tov tag nrho cov ntaub ntawv, kev coj noj coj ua thiab kev lag luam cov qauv kom meej meej yuav tsum tau sib cais ntawm cov galvanized coils ntawm cov khoom sib txawv.
2. Dab tsi yog qhov teeb meem tiag tiag ntawm kev khaws cov galvanized coils ntawm cov khoom sib txawv ua ke?
A: Kev sib xyaw ua ke feem ntau ua rau muaj kev pheej hmoo: tsis meej pem thiab corrosion. Qhov kev pheej hmoo ntawm kev tsis meej pem tshwm sim hauv kev tswj cov khoom lag luam-galvanized coils ntawm cov khoom sib txawv muaj cov khoom sib txawv. Piv txwv li, cov khoom siv hluav taws xob ntawm dav dav - lub hom phiaj coils thiab sib sib zog nqus - kos duab galvanized yog txawv kiag li. Yog tias lawv sib xyaw thiab tsis meej pem thaum tuav tom ntej, nws yuav ncaj qha ua rau cov khoom seem ntawm cov khoom ua tiav. Qhov kev pheej hmoo ntawm corrosion yog ntau insidious. Thaum ob lub hlau uas muaj qhov sib txawv ntawm cov khoom siv hluav taws xob sib txawv tuaj rau hauv qhov chaw ntub dej, lawv tsim cov galvanic corrosion ntawm tes, qhov uas cov hlau ua raws li cov anode yuav ua kom corrosion. Piv txwv li, yog tias cov galvanized coils zoo tib yam nyob rau hauv kev sib cuag ncaj qha nrog stainless hlau galvanized coils nyob rau hauv ib qho chaw ntub dej, galvanized coil substrate nrog lub peev xwm qis dua yuav poob nws cov zinc txheej tiv thaiv, ua rau kom ceev corrosion. Tsis tas li ntawd, yog tias cov khoom seem xws li cov kua qaub, alkalis, ntsev, los yog cov cement sib xyaw rau hauv qhov chaw ntawm cov galvanized coils, uas tuaj yeem corrode zinc txheej, los yog cov chaw puas los ntawm kev sib txhuam ncaj qha vim kev sib xyaw, qhov zoo ntawm zinc txheej yuav deteriorate.
3. Puas yog qhov kev pheej hmoo corrosion zoo ib yam rau ntau hom galvanized coils? Cov kev sib txuas twg yuav tsum tau saib xyuas tshwj xeeb?
A: Txawm tias ntawm cov khoom faib ua "galvanized coils," qhov kev pheej hmoo corrosion tsis zoo ib yam. Zinc coatings ntshiab feem ntau tsis muaj qhov tseem ceeb ceev corrosion, raws li zinc-rau-zinc tiv tauj yog electrochemically tshaj. Txawm li cas los xij, kev sib xyaw ntawm cov zinc sib txawv -raws li txheej nrog lwm cov ntaub ntawv sib txawv. Kev paub qhia tau hais tias thaum cov txheej galvanized tuaj rau hauv kev sib cuag nrog cov hlau xws li tooj liab, tooj dag, thiab txhuas hauv qhov chaw ntub dej, txheej txheej galvanized yuav corrode sai heev. Thib ob, thaum galvanized coils nyob rau hauv kev sib cuag ncaj qha nrog stainless hlau thiab muaj ib tug conductive Circuit Court thiab electrolyte, qhov sib txawv muaj peev xwm ua rau galvanic corrosion, uas yuav tsum tau tiv thaiv los ntawm kev sib cais ntawm lub cev. Tsis tas li ntawd, yog tias qhov chaw cia khoom muaj cov tshuaj xws li ammonium chloride, ntsev, lossis chlorides, lawv tuaj yeem ua rau cov zinc txheej yooj yim puas; Yog li ntawd, kev sib xyaw cia lossis nchuav yuav tsum raug zam kom nruj. Rau galvanized coils nrog qhov sib txawv tseem ceeb hauv cov txheej txheem tsim khoom (kub-dip galvanizing thiab electro-galvanizing), qib zog, thiab kev kho saum npoo, feem ntau pom zoo kom khaws lawv cais rau kev tswj xyuas kom tsis txhob muaj kev ntxhov siab.
4. Yuav tsum muaj kev tiv thaiv dab tsi thaum galvanized coils ntawm cov khoom sib txawv yuav tsum muab khaws cia rau hauv tib lub tsev khaws khoom?
A: Thaum cov xwm txheej khaws cia tau txwv thiab galvanized coils ntawm cov khoom sib txawv yuav tsum tau muab khaws cia rau hauv tib cheeb tsam, yuav tsum tau ua raws li kev tiv thaiv hauv qab no: kev cais lub cev yog thawj txoj hauv kev. Rau ob cov ntaub ntawv hlau uas muaj peev xwm sib txawv, nylon gaskets, roj hmab pads, los yog insulating daim kab xev yuav siv tau los cais lawv, thaiv txoj kev tam sim no thiab yog li tiv thaiv galvanic corrosion. Hauv qab ntawm cov galvanized coils yuav tsum tau tsa nrog ntoo lossis roj hmab thaiv kom tsis txhob ya raws, feem ntau tsawg kawg yog 15 cm siab, thiab kev sib cuag ncaj qha nrog av yuav tsum zam. Thaum stacking, cov khoom sib txawv (cov khoom siv sib txawv thiab cov khoom sib xyaw alloy) yuav tsum tau sib cais nruj me ntsis. Tsis tas li ntawd, nws raug nquahu kom tawm ntawm qhov tsawg kawg yog 0.5 meters ntawm pawg sib txawv kom yooj yim txhua hnub tshuaj xyuas thiab tswj. Rau cov xwm txheej uas ib puag ncig huab cua tuaj yeem ua kom cov zinc hloov pauv, cov av noo hauv tsev yuav tsum tau tswj nruj me ntsis (kwv yees cov av noo tsis pub tshaj 70%), thiab ntsuas kub yuav tsum tau saib xyuas.
5. Yuav ua li cas kom paub qhov txawv thiab sau cov galvanized coils ntawm cov khoom sib txawv hauv kev tswj xyuas qhov tseeb?
A: Tus yuam sij rau kev tshawb fawb lub tsev khaws khoom yog nyob rau hauv kev faib suab, sau npe, thiab kaw lus. Ua ntej, qhov chaw ruaj khov yuav tsum raug xaiv raws li ntau yam (qib lag luam, qib stamping, qib qauv, thiab lwm yam) thiab cov lus qhia tshwj xeeb (thickness, dav, zinc txheej hnyav), thiab cov ntaub ntawv ntshiab yuav tsum tau dai lossis affixed rau txhua pawg. Thaum lub sij hawm tau txais cov txheej txheem, stacking yuav tsum nruj me ntsis raws li tau txais kev txiav txim, thiab ib daim ntawv teev cov ntaub ntawv yuav tsum tau tsim los ua raws li "thawj-hauv, ua ntej- tawm" txoj cai. Nyob rau tib lub sijhawm, kom tsis txhob muaj kev tsis sib haum xeeb, cov ntaub ntawv qib, tus qauv, thiab cov lej batch kuj raug cim rau ntawm cov khoom siv raw ntawm cov galvanized coils 'lub Hoobkas ntim khoom; Cov thawj coj hauv tsev yuav tsum ua tib zoo xyuas cov ntaub ntawv thaum tau txais thiab yuav tsum tsis txhob txiav txim rau cov khoom siv nkaus xwb raws li qhov pom, xim, lossis qhov chaw. Tsis tas li ntawd, qhov saum npoo ntawm cov galvanized coils nyob rau hauv cia yuav tsum tau soj ntsuam tsis tu ncua. Yog tias muaj qhov txawv txav xws li zinc txheej discoloration los yog xeb dawb tau pom vim muaj kev sib xyaw ua ke lossis ib puag ncig, lawv yuav tsum tau muab cais tawm thiab kho tam sim ntawd, thiab txhua qhov sib xyaw cia lossis kev tswj xyuas yuav tsum tau tshawb xyuas. Los ntawm cov lus saum toj no - hais txog kev tswj hwm tus qauv, tsis yog tsuas yog tuaj yeem tiv thaiv cov khoom tsis meej pem, tab sis lub sijhawm siv tau ntawm galvanized coils hauv lub tsev khaws khoom kuj tseem tuaj yeem txuas ntxiv, ua tau raws li lub hom phiaj ntawm ASTM A123 tus qauv uas tsim nyog cia tuaj yeem "ntev lub neej ntawm galvanized qhov chaw los ntawm 3 mus rau 5 xyoos".