Thaum xaiv cov kav dej steel rau kev tsim kho, kav dej, xa hluav taws xob, lossis kev lag luam, cov lus nug tshwm sim: yog cov yeeb nkab dub muaj zog dua cov yeeb nkab galvanized? Thaum xub thawj siab ib muag, cov yeeb nkab dub thiab galvanized steel yeeb nkab zoo li yog cov ntaub ntawv sib txawv. Txawm li cas los xij, qhov sib txawv yog feem ntau nyob rau hauv kev kho saum npoo es tsis yog lub hauv paus hlau muaj pes tsawg leeg. Kev txiav txim siab uas yog "muaj zog dua" yuav tsum tau tshuaj xyuas cov khoom siv kho tshuab, txheej txheej, kev tiv thaiv corrosion, thiab kev ua haujlwm tiag tiag hauv ntiaj teb raws li cov kev pabcuam sib txawv.
Kev nkag siab txog kev coj tus cwj pwm ntawm ob hom yeeb nkab yuav ntsuas lawv cov txheej txheem tsim khoom, tensile thiab yield zog, hardness, thiab ib puag ncig durability es tsis yog cia siab rau ib qho kev pom los yog kev siv cov kev xav.
Nkag siab cov yeeb nkab dub thiab galvanized yeeb nkab
Dab tsi yog Dub Hlau Yeeb Nkab?
Cov yeeb nkab dub yog tsim los ntawm cov hlau carbon hlau thiab tsis tau txais kev tiv thaiv zinc txheej. Nws cov tsos tsaus nti los ntawm cov hlau oxide tsim thaum lub sijhawm tsim khoom. Nws yog dav siv rau cov roj kab, hluav taws kub sprinkler systems, thiab cov qauv siv vim nws lub zog siab thiab kub tsis kam. Txij li thaum nws tsis muaj corrosion- tiv thaiv txheej, nws feem ntau ntsia rau hauv qhov chaw qhuav lossis sab hauv tsev tshwj tsis yog siv kev tiv thaiv ntxiv.
Galvanized steel yeeb nkab yog dab tsi?
Galvanized steel yeeb nkab kuj yog tsim los ntawm carbon steel tab sis yog coated nrog ib txheej ntawm zinc, feem ntau los ntawm kub -dip galvanizing. Cov txheej zinc ua raws li cov txheej txheem kev txi, tiv thaiv cov hlau hauv qab los ntawm corrosion. Cov kav dej Galvanized feem ntau yog siv rau hauv cov khoom siv dej, cov qauv sab nraum zoov, thiab ib puag ncig uas muaj dej noo.
Vim tias ob qho tib si siv cov pa roj carbon zoo sib xws, lawv cov khoom siv hluav taws xob muaj zog feem ntau sib piv ua ntej txheej txheej.
Mechanical Strength sib piv
Yield thiab Tensile zog
Nyob rau hauv cov nqe lus ntawm lub hauv paus hlau lub zog, cov yeeb nkab dub thiab galvanized yeeb nkab feem ntau yog tsim los ntawm tib qib ntawm carbon steel, txhais tau tias lawv lub zog yield thiab tensile zog yog ze li ntawm zoo tib yam. Cov txheej txheem galvanizing tsis cuam tshuam qhov microstructure sab hauv ntawm cov tub ntxhais hlau. Yog li ntawd, nyob rau hauv cov neeg kho tshuab chaw thau khoom ntshiab, ob lub kav dej muaj peev xwm zoo sib xws -cov kabmob.
Txawm li cas los xij, qee yam tuaj yeem cuam tshuam kev ua haujlwm. Thaum kub -dip galvanizing, cov yeeb nkab yog immersed nyob rau hauv molten zinc ntawm kub. Qhov kev tiv thaiv thermal no tuaj yeem txo qis kev ntxhov siab hauv sab hauv tab sis tsis ua kom nce lossis txo lub zog tensile.
Cov lus hauv qab no sib piv cov khoom siv hluav taws xob zoo rau cov qauv carbon steel kav siv hauv cov khoom siv dub thiab galvanized.
| Khoom | Cov yeeb nkab dub | Galvanized steel yeeb nkab | Influence ntawm lub zog |
|---|---|---|---|
| Khoom siv hauv paus | Cov pa roj carbon steel | Cov pa roj carbon steel | Tib yam ntxwv core |
| Yield Strength (Tswj) | 240-350 MPa | 240-350 MPa | Sib piv |
| Tensile Strength (Tswj) | 400-550 MPa | 400-550 MPa | Sib piv |
| Nto Txheej | Tsis muaj | Zinc txheej | Yam tsawg kawg nkaus cov nyhuv |
| Hardness | Nruab nrab | Me ntsis saum npoo hardness | Kev cuam tshuam tsawg |
Los ntawm cov qauv tsim qauv, tsis yog hom twg yog qhov muaj zog dua li lwm tus yog ua los ntawm tib qib steel.
Nto hardness thiab brittleness
Cov zinc txheej ntawm cov yeeb nkab galvanized tuaj yeem ua rau qhov tawv tawv me ntsis, tab sis qhov no tsis ua kom muaj zog tag nrho ntawm cov qauv. Muaj tsawg zaus, kub galvanizing ntau dhau yuav ua rau me me embrittlement nyob rau hauv siab - carbon steels, txawm hais tias niaj hnub kev tswj xyuas feem ntau tshem tawm qhov kev pheej hmoo no.
Yog li ntawd, thaum ntsuas tensile lossis compressive zog ib leeg, cov kav dej dub thiab galvanized ua tau zoo ib yam.
Corrosion Resistance thiab Ntev -Lub Sij Hawm Ua Haujlwm
Environmental Durability
Txawm hais tias lub zog siv tshuab tuaj yeem sib piv thaum pib, qhov ntev - lub sij hawm durability tuaj yeem sib txawv. Cov yeeb nkab dub yog qhov yooj yim rau xeb hauv qhov chaw ntub lossis ntub dej. Corrosion maj mam txo cov phab ntsa tuab, txo cov txheej txheem lub zog dhau sijhawm.
Galvanized yeeb nkab resists corrosion vim zinc txheej tiv thaiv cov hlau substrate. Txawm hais tias lub txheej yog khawb, zinc corrodes nyiam dua, khaws cia cov hlau hauv qab. Nyob rau sab nraum zoov lossis dej- kev teeb tsa raug pom, cov yeeb nkab galvanized feem ntau tswj nws cov qauv kev ncaj ncees ntev dua li cov yeeb nkab dub uas tsis muaj coated.
Service Life Considerations
Lub zog zoo ntawm cov yeeb nkab hauv kev pabcuam tsis yog nyob ntawm nws cov khoom qub, tab sis kuj ntawm nws qhov kev tiv thaiv rau degradation. Nyob rau hauv ib puag ncig corrosive, cov yeeb nkab dub yuav plam thickness thiab nws thiaj li tsis muaj zog. Galvanized yeeb nkab khaws cov phab ntsa tuab ntev dua, zoo khaws nws lub peev xwm thauj khoom.
Cov lus hauv qab no piv cov kev ua tau zoo nyob rau hauv cov kev pabcuam sib txawv.
| Kev Pabcuam | Cov yeeb nkab dub Performance | Galvanized yeeb nkab Performance | Ntev -Lub Sij Hawm Ua Tau Zoo |
|---|---|---|---|
| Qhuav sab hauv siv | Zoo heev | Zoo heev | Zoo sib xws |
| Gas kis tau tus mob | Nyiam | Txais tau | Zoo sib xws |
| Tawm sab nraum zoov | Yooj yim rau xeb | Resistant rau corrosion | Galvanized muaj zog dua lub sijhawm |
| Dej Systems | txwv | Feem ntau siv | Galvanized ntau ruaj |
| Kub kub | Zoo | Zinc tuaj yeem degrade | Dub ruaj khov dua thaum kub kub |
Nyob rau hauv siab -kub tshuab xws li hluav taws kub sprinkler los yog roj kab, cov yeeb nkab dub yuav ua tau zoo dua vim tias cov zinc txheej tuaj yeem deteriorate ntawm qhov kub thiab txias.
Kev siv cov qauv thiab cov kev xav tau zoo
Installation thiab Fabrication
Cov yeeb nkab dub feem ntau yooj yim dua rau vuam vim tias tsis muaj zinc txheej los tshem tawm. Vuam galvanized yeeb nkab yuav tsum tau tshem tawm cov zinc txheej nyob rau hauv lub weld cheeb tsam los tiv thaiv fumes thiab xyuas kom meej fusion. Los ntawm kev pom kev tsim khoom, cov yeeb nkab dub tuaj yeem muab cov txiaj ntsig zoo hauv cov qauv txheej txheem.
Nqi thiab Muaj
Galvanized yeeb nkab feem ntau raug nqi ntau dua vim cov txheej txheem txheej txheej ntxiv. Hauv cov ntawv thov uas tsis muaj kev txhawj xeeb, cov yeeb nkab dub tuaj yeem muab cov qauv sib npaug ntawm tus nqi qis.
Kev tsis ntseeg txog lub zog
Ib qho kev xav tsis zoo yog tias cov yeeb nkab galvanized muaj zog tsuas yog vim nws zoo nkaus li muaj zog dua lossis corrosion-resistant. Nyob rau hauv kev muaj tiag, cov zinc txheej txhim khu kev ruaj ntseg es tsis ua kom cov neeg kho tshuab muaj zog. Hloov pauv, cov yeeb nkab dub tsis yog qhov tsis muaj zog tshwj tsis yog tias corrosion txo nws cov phab ntsa thickness dhau sijhawm.
Xaus
Cov yeeb nkab dub tsis yog qhov muaj zog tshaj li cov yeeb nkab galvanized thaum ob qho tib si tsim los ntawm tib qib carbon steel. Lawv lub zog tawm los thiab lub zog tensile feem ntau sib npaug vim tias cov khoom siv tseem ceeb yog tib yam. Lub ntsiab sib txawv yog nyob rau hauv corrosion kuj tsis yog txhua yam muaj peev xwm. Hauv qhov chaw qhuav hauv tsev lossis siab - qhov kub thiab txias, cov yeeb nkab dub ua tau zoo sib npaug thiab tseem tuaj yeem muab cov txiaj ntsig zoo. Hauv cov dej noo lossis sab nraum zoov, cov yeeb nkab galvanized tswj nws cov txheej txheem kev ruaj ntseg ntev dua vim nws cov zinc txheej tiv thaiv. Thaum kawg, qhov kev xaiv "muaj zog" nyob ntawm qhov chaw ua haujlwm, qhov kub thiab txias, thiab kev cia siab rau lub neej tsis yog cov khoom siv hauv lub zog ib leeg.
