Teb ncaj qha
Yog, galvanized steel kav tuaj yeem xeb, tab sis cov lus nug tseem ceeb yog thaum twg thiab yog vim li cas. Cov yeeb nkab galvanized tsis yog cov yeeb nkab ua los ntawm zinc. Nws yog cov yeeb nkab steel nqa cov txheej txheem metallurgically sib raug zoo zinc txheej, thiab lub neej kev pab cuam ntawm cov yeeb nkab yog txiav txim siab los ntawm ntev npaum li cas cov txheej muaj sia nyob ib puag ncig. Thaum zinc tseem nyob rau saum npoo ntawm cov hlau hauv qab yog tiv thaiv, thiab lub sijhawm txheej txheej tau noj ntawm ib qho chaw, corrosion ntawm cov hlau pib ntawm lub sijhawm ntawd.
Galvanized yeeb nkab yog txawm li cas los xij yog qhov ruaj khov dua li cov hlau liab qab hauv ntau qhov chaw. Nws tiv taus atmospheric corrosion zoo, nws muaj zog thiab lub teeb txheeb ze rau ntau lwm cov ntaub ntawv piping, thiab nws yog kev lag luam, uas yog vim li cas nws tseem yog tus qauv kev xaiv rau cov kab dej, cov kav dej thiab kev teeb tsa sab nraum zoov.
Yuav Ua Li Cas Galvanizing Tiv Thaiv Cov Hlau
Zinc tiv thaiv hlau hauv ob txoj kev sib txawv. Qhov thib ib yog kev tiv thaiv kev tiv thaiv: lub txheej lub cev cais cov hlau los ntawm ya raws thiab oxygen, yog li cov tshuaj tiv thaiv electrochemical uas siv hlau tsis tuaj yeem pib. Qhov thib ob yog kev txi, los yog cathodic, kev tiv thaiv: zinc tsis tshua muaj txiaj ntsig zoo dua li cov hlau, yog li qhov chaw uas cov txheej raug puas zinc nyob ib puag ncig kev puas tsuaj dhau los ua cov anode thiab corrodes nyiam, thiab cov hlau raug tiv thaiv ntev npaum li zinc muaj nyob ze. Qhov thib ob txheej txheem no yog vim li cas khawb galvanized nto tsis tam sim ntawd tsim cov xeb stain zoo li qhov khawb pleev xim rau saum npoo.
Lub txheej kuj tsim nws tus kheej tiv thaiv txheej thaum lub sij hawm. Zinc raug rau huab cua reacts los tsim ib tug compact patina ntawm zinc carbonate thiab lwm yam compounds, uas yog deb tsawg reactive dua zinc tshiab thiab slows ntxiv noj ntawm txheej considerably. Qhov no yog vim li cas galvanized yeeb nkab nyob rau hauv ib tug zoo ventilated nyob deb nroog los yog hauv nroog huab cua nyob ntev npaum li cas ntawm cov liab qab corrosion tus nqi ntawm zinc xav.
Kub Dip thiab Electro Galvanized Yeeb Nkab Sib Piv
| Feature | Kub dip galvanized | Hluav taws xob galvanized |
|---|---|---|
| Txheej txheem | Cov hlau tiav yog muab tso rau hauv ib da dej ntawm molten zinc, tsim zinc hlau alloy txheej ntawm lub interface | Cov hlau yog immersed nyob rau hauv ib tug electrolyte uas muaj zinc thiab electrolysis deposits lub txheej |
| Bond | Metallurgical alloy daim ntawv cog lus, resistant rau mechanical puas | Lub cev tso nyiaj nrog cov nyiaj tsis muaj zog rau lub substrate |
| Hom txheej thickness | Thicker, tswj hwm los ntawm cov chav kawm txheej txheej tau teev tseg hauv kev yuav khoom | Thinner, feem ntau yog ob peb microns mus rau ob peb kaum microns |
| Kev pab cuam lub neej nyob rau hauv tib qhov chaw | Ntev, vim lub neej yog proportional rau qhov loj ntawm zinc tam sim no | Luv luv, vim tias muaj zinc tsawg dua los noj |
| Hom kev siv | Cov kab dej sab nraum zoov, cov txheej txheem thiab cov kav dej hauv tsev | Sab hauv thiab kho kom zoo nkauj daim ntaub ntawv, lub teeb lub luag hauj lwm tiv thaiv |
Hlau kub tseem ceeb thaum tsim khoom. Zinc melts ntawm txog 419 degrees Celsius thiab boils ntawm txog 907 degrees Celsius, thaum hlau melts saum 1400 degrees Celsius. Vim hais tias cov zinc boils nyob rau hauv qab ntawm melting ntau yam hlau, vuam ib tug galvanized yeeb nkab tsav lub txheej tawm nyob rau hauv lub tshav kub cuam tshuam cheeb tsam thiab tsim zinc fume, uas yog vim li cas lub txheej yuav tsum tau rov qab nyob rau hauv lub zos tom qab vuam thiab vim li cas qhov cua yog yuav tsum tau thaum lub sij hawm kub ua hauj lwm ntawm galvanized khoom.
Thaum twg thiab yog vim li cas galvanized yeeb nkab xeb
Txheej siv. Nyob rau hauv ib puag ncig corrosive cov zinc siv dhau sijhawm, thiab cov khoom qub tshaj plaws lossis feem ntau raug cuam tshuam poob kev tiv thaiv ua ntej.
Kev puas tsuaj. Impact, abrasion, xov txiav thiab txiav kom ntev tag nrho cov hlau liab qab. Txiav xaus thiab threads yog qhov chaw tshaj plaws rau thawj xeb.
Vuam. Lub tshav kub cuam tshuam thaj tsam poob nws cov txheej thiab, tshwj tsis yog kho, pib corrode.
Nyias los yog txheej txheej. Electro galvanized yeeb nkab muaj txheej txheej thinner, thiab tawm ntawm cov txheej txheem txheej thickness ua rau lub neej luv luv.
Cia tej yam kev mob. Damp stacking, cua tsis zoo thiab kev sib cuag nrog cov ntaub ntawv tsis sib xws ua rau xeb dawb, cov khoom siv zinc corrosion, uas siv cov txheej txheej loj txawm tias cov hlau tseem tsis tau tawm tsam.
Acid los yog muaj zog alkaline xov xwm. Zinc ua haujlwm tsis zoo nyob rau hauv pH tsawg lossis siab heev, qhov twg patina tsis tsim lossis tawg.
Txheej yuav tsum tau muaj thiab tiv thaiv corrosion
Txheej zoo yog teev, tsis xav. ASTM A123 / A123M teeb tsa qhov nruab nrab qhov nruab nrab txheej tuab qhov tseem ceeb uas nce nrog cov tuab ntawm cov hlau raug coated, los ntawm 45 micrometers rau cov khoom ntawm 1.5 thiab 3 millimeters tuab txog 85 micrometers rau cov khoom 6 millimeters thiab tuab, rau cov khoom uas tsis yog centrifuged tom qab galvanizing. ISO 1461 muab cov qauv sib piv rau cov khoom kub dip galvanized thiab tau hais dav dav ntawm kev txiav txim xa tawm. Vim tias qhov tseem ceeb yog qhov yuav tsum tau txais yam tsawg kawg nkaus, daim ntawv xaj yuav tsum tau hais txog txoj kev sim thiab tus naj npawb ntawm kev ntsuas ib qhov ntev.
Hauv kev pabcuam, kev tiv thaiv ua raws tib lub ntsiab lus raws li kev tiv thaiv. Tsis txhob ua kom cov txheej txheej thaum thauj thiab teeb tsa, kho qhov txiav xaus, xov thiab vuam thaj chaw nrog zinc nplua nuj txheej siv rau cov chaw tsim khoom cov lus qhia, khaws cov yeeb nkab kom qhuav thiab qhov cua, thiab cais cov yeeb nkab galvanized los ntawm tooj liab thiab lwm yam hlau sib txawv kom tsis txhob galvanic acceleration. Nyob rau hauv ib puag ncig hnyav, ib qho kev ua haujlwm duplex uas sib xyaw ua ke nrog cov xim zoo nkauj lossis cov hmoov pleev xim pleev xim rau lub neej ntev heev vim tias lub tsho sab saum toj ua rau cov zinc noj thaum lub galvanizing tseem tiv thaiv txhua qhov chaw uas cov topcoat tau ua txhaum cai.
FAQ
Q: Puas yog galvanized steel yeeb nkab xeb tam sim ntawd?
Tsis yog. Thaum cov zinc txheej tsis zoo, cov hlau tiv thaiv ob qho tib si los ntawm kev cuam tshuam thiab kev tiv thaiv kev txi, thiab ib lub teeb patina ntawm zinc carbonate cov ntaub ntawv uas slows noj cov txheej ntxiv.
Q: Dab tsi yog qhov txawv ntawm cov xeb dawb thiab xim liab ntawm cov yeeb nkab galvanized?
Cov xeb dawb yog cov khoom siv zinc corrosion uas ua rau ntawm cov txheej txheem nws tus kheej, feem ntau thaum lub sij hawm ntub dej, thiab siv zinc tsis tawm tsam cov hlau. Liab xeb yog hlau oxide thiab qhia tias cov txheej tau noj los yog ua txhaum cai thiab cov hlau yog corroding.
Q: Vim li cas qhov txiav xaus ntawm galvanized yeeb nkab xeb ua ntej?
Txiav thiab threading tshem tawm cov zinc thiab nthuav tawm cov hlau liab qab, thiab yog tias qhov chaw raug tsis kho nrog zinc nplua nuj txheej nws tsis muaj kev thaiv thiab tsis muaj kev tiv thaiv kev txi, yog li nws corrodes sai dua li cov coated nto nyob ze.
Q: galvanized yeeb nkab puas tuaj yeem welded yam tsis muaj kev tiv thaiv?
Vuam kub hnyiab cov txheej nyob rau hauv thiab ib ncig ntawm weld vim zinc boils nyob rau hauv ib tug kub ntawm lub melting point ntawm hlau, yog li ntawd lub cheeb tsam yuav tsum tau ntxuav thiab kho nrog ib tug haum zinc nplua nuj txheej tom qab lub weld tau txias.
Q: Uas ntev dua, kub dip lossis electro galvanized yeeb nkab?
Kub dip galvanized yeeb nkab feem ntau kav ntev dua nyob rau tib qhov chaw vim tias cov txheej txheej yog thicker thiab metallurgically sib raug zoo, thiab vim lub neej txheej yog proportional rau cov nyiaj zinc muaj los noj.
Q: Yuav ua li cas yog galvanized txheej thickness txheeb xyuas?
Txheej txheej los yog tuab yog ntsuas los ntawm cov txheej txheem hais nyob rau hauv cov qauv siv, xws li hnyav ua ntej thiab tom qab stripping lub txheej los yog siv ib tug sib nqus thickness gauge, thiab daim ntawv xaj yuav tsum hais txog cov chav kawm txais.
