1. Vim li cas qee cov kav hlau steel tshwj xeeb tshaj yog xeb?
Lub hauv paus ua rau steel yeeb nkab xeb yog cov hlau reacts nrog oxygen thiab dej hauv huab cua. Txawm li cas los xij, cov kav hlau sib txawv muaj cov xeb sib txawv, uas feem ntau yog nyob ntawm peb lub ntsiab lus:
Puas muaj cov txheej txheem tiv thaiv: qhov saum npoo ntawm cov pa roj carbon zoo tib yam tsis muaj kev tiv thaiv xeb, ib yam li cov ntsia hlau raug rau saum huab cua, cov kab xeb tuaj yeem pom hauv ob peb hnub.
Kev pabcuam ib puag ncig: Hauv cov av noo, kua qaub-cov pa roj thiab cov dej ntsev ntawm ntug dej hiav txwv, qhov nrawm nrawm yuav ua ob npaug.
Khoom siv nws tus kheej: cov kav hlau steel nrog cov ntsiab lus siab carbon ntau dua yuav ua rau muaj peev xwm sib txawv thiab ua kom corrosion.
Cias muab: nws tsuas yog ib qho teeb meem ntawm lub sij hawm ua ntej cov pa roj carbon steel yeeb nkab tsis muaj txheej tiv thaiv xeb.
2. carbon steel yeeb nkab vs galvanized steel yeeb nkab: peb qhov sib txawv tseem ceeb
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Rust- pov thawj muaj peev xwm sib txawv.
Carbon steel yeeb nkab: liab qab yeeb nkab, tsis muaj kev tiv thaiv. Qhov chaw qhuav hauv tsev tsuas yog siv xwb, thiab qhov chaw ntub dej pib xeb hauv ib lub lis piam lossis li ntawd.
Galvanized steel yeeb nkab: nto yog them nrog ib txheej ntawm zinc. Zinc muaj zog ntau dua li hlau thiab yuav muab qhov tseem ceeb rau "kev txi" nws tus kheej los tiv thaiv cov kav hlau. Nws yuav tsis xeb rau ntau xyoo nyob rau hauv ib puag ncig ib puag ncig.
Kev yuav khoom tawm tswv yim: Rau sab nraum zoov, hauv qab daus thiab rhiav nrog cov pa siab, cov kav dej galvanized yog nyiam.
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Tus nqi sib txawv yog dab tsi?
Galvanized steel kav yog kwv yees li 15% -30% kim tshaj li carbon steel kav ntawm tib specification. Cov nqi sib txawv no yog raws nraim tus nqi ntawm cov txheej txheem galvanizing.
Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias nws yog pheej yig dua los yuav cov pa roj carbon steel kav, thiab cov nqi zog thiab cov khoom siv rau kev tshem tawm cov xeb tom qab thiab cov xim pleev xim yog feem ntau siab dua cov khoom ncaj qha mus yuav cov kav dej galvanized.
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Nws puas tuaj yeem welded?
Carbon steel yeeb nkab: vuam yog yooj yim heev. Nco ntsoov txhuam los tiv thaiv- xeb xim tom qab vuam.
Galvanized steel yeeb nkab: nws tuaj yeem welded, tab sis cov zinc txheej ntawm qhov sib koom ua ke yuav raug hlawv. Tom qab vuam, zinc- cov xim nplua nuj yuav tsum tau siv rau ntawm qhov sib txuas. Tsis tas li ntawd, zinc pa luam yeeb yuav raug tsim thaum lub sij hawm vuam, yog li nws yuav tsum tau ua nyob rau hauv ib qhov dej - qhov cua.
Kev yuav khoom tawm tswv yim: Yog tias ntau tshaj 90% ntawm qhov project yog threaded kev twb kev txuas (xws li hluav taws hose), galvanized yeeb nkab yog haum heev. Yog hais tias nws yog tag nrho cov welded thiab qhov ntau yog loj, tus nqi ntawm cov pa roj carbon steel yeeb nkab ntxiv rau ib txheej txheej yuav siab dua.
3. 3 pits uas cov neeg yuav khoom tuaj yeem nkag tau yooj yim
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Qhov 1: Yuav "txias galvanizing" li "kub galvanizing"
Kub dip galvanizing: tag nrho cov yeeb nkab steel yog raus hauv molten zinc, nrog tuab zinc txheej, muaj zog adhesion thiab xeb tsis kam rau ntau tshaj 10 xyoo.
Txias galvanizing: Qhov tseeb, nws yog electroplating lossis txau. Cov txheej zinc yog nyias thiab yooj yim tev tawm, thiab nws pib xeb hauv rau lub hlis mus rau ib xyoos.
Yuav qhia li cas: kub-dip galvanized nto yog silvery grey, ntxhib thiab muaj zinc paj siv lead ua kab; Txias galvanized nto yog ci dawb thiab du, zoo li xim. Tus nqi sib txawv yog 20% -30%, tab sis lub neej sib txawv yog ob peb zaug.
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Qhov 2: Yog tias koj tsis xeb, koj tsis tas yuav tu
Galvanized kav tsuas yog xeb-resistant, tsis txhob xeb. Txiav lub ntsej muag kawg, vuam cov ntsiab lus thiab ntev - lub sij hawm cov dej tsub zuj zuj ntawm cov khoom yuav ua rau muaj teeb meem ntev. Tshaj tawm - cov lus qhia txog kev yuav khoom:
Ua zinc supplementation ntawm kev txiav thiab vuam txoj haujlwm.
Tsis txhob muab tso rau hauv dej ntev -.
Ua kev tshuaj xyuas tsis tu ncua, thiab tswj cov kab xeb hauv lub sijhawm thaum pom.
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Qhov 3: Cov phab ntsa thickness tsis raug xaiv raws li lub hom phiaj.
Cov kav hlau ntawm tib qhov tshwj xeeb muaj cov phab ntsa tuab sib txawv. Qee qhov kev yuav khoom tsuas yog saib ntawm "ob peb ceg" thiab tsis quav ntsej cov phab ntsa tuab. Thaum siv rau hauv kev thauj khoom-cov kabmob cov kabmob lossis cov raj xa dej siab, qhov teeb meem kev nyab xeeb yuav tshwm sim yog tias phab ntsa tuab tsis txaus. Thaum txiav txim, nws yuav tsum paub meej: dab tsi cov qauv (xws li GB / T 3091) yog siv thiab pes tsawg millimeters phab ntsa thickness yog.
Cov ntsiab lus: Peb kauj ruam hauv kev txiav txim siab yuav khoom- ua
Kauj ruam 1: Saib ntawm ib puag ncig- puas yog qhuav hauv tsev lossis ntub / sab nraum zoov? Carbon steel yog txaus rau yav dhau los, thiab galvanized rau tom kawg.
Kauj ruam 2: Saib ntawm hom kev sib txuas- cov xov yog galvanized, thiab vuam yog tus nqi tseem ceeb.
Kauj Ruam 3: Saib ntawm pob nyiaj siv - nws tsis yog kev siv nyiaj pov tseg, tab sis tus nqi siv lub neej. Cov yeeb nkab galvanized yog siv rau 10 xyoo, thiab cov yeeb nkab carbon steel yuav tsum tau hloov peb zaug.
