Galvanized hloov bar nto ua

Galvanized hloov bar nto ua
Qhov tseem ceeb ntawm lub galvanized round bar deg ua koom nrog kev sib sau rau cov txheej zinc ntawm cov hlau deg los ntawm ntau txoj kev. Cov txheej txheem no feem ntau tau cusnorized ua kub kub- dip galvanizing thiab txias}} dip galvanizing (electrogalvanizing). Ib qho ntxiv, tsawg tsawg ntawm cov txheej txheem galvanizing yog siv rau cov ntawv thov tshwj xeeb. Cov txheej txheem no txawv nyob rau hauv lawv cov txheej zinc txheej tsim cov ntsiab cai, ua tau zoo, thiab muaj feem cuam tshuam.
I. Mainstream deg cov txheej txheem faib tawm thiab cov yam ntxwv
1. Kub - dip galvanizing (HDg)
Qhov no yog tam sim no yog cov txheej txheem siv dav siv nrog kev tiv thaiv kev tiv thaiv corrosion siab tshaj plaws. Nws cov txheej txheem tseem ceeb yog kom tshem tawm cov hlau hauv Molten Zinc los ua cov metallurgically sib khi zinc txheej.
Txheej txheem hauv txoj ntsiab cai:
Pretreatment: The steel is first degreased (to remove oil and dirt), pickled (to remove surface scale and rust), rinsed (to neutralize the acid), and finally fluxed (applied with flux to prevent secondary oxidation and promote zinc adhesion). Kub ntsw: lub pre {{-}}}}} Kho cov hlau yog maj mam raus rau hauv Molten Zinc ntawm 440 {}} 460 degree. Cov hlau rau ntawm cov hlau saum npoo reacts nrog zinc, tsim ib qho "hlau-zinc alloy txheej," uas yog li npog nrog lub ntshiab zinc txheej.
Tshaj tawm - Kev Ua: Tom qab tshem tawm cov txheej toinc, cov cua txias (xaiv tau los ntawm huab cua tsis zoo ntawm cov txheej zinc txheej).
Cov ntsiab lus zoo:
Tuab thiab muaj zog zinc txheej: cov txheej zinc txheej tuab yog li 30-85μm (ua rau nws muaj peev xwm ua tau), ua rau nws cov chaw npog cov ntaub ntawv xws li cov pob zeb thiab cov pob zeb ntawm cov hlau.
Ntev corrosion lub neej: nyob rau sab nraum zoov ib puag ncig (xws li av thiab huab cua), nws feem ntau muaj kev pabcuam lub neej ntawm 20-50 xyoo tsis muaj kev saib xyuas nquag.
Cov ntawv thov: Cov ntawv thov uas yuav tsum muaj kev tiv thaiv cov hluav taws xob siab, thiab kev sib txuas ntawm cov hlau sib txuas, "sib sau ua hluav taws xob zinc txheej.
Txheej txheem hauv txoj ntsiab cai:
Pretreatment: zoo ib yam li kub - dip galvanizing, nws yuav tsum muaj zog, rub, thiab yaug, tab sis tsis muaj cov kauj ruam flux.
Kev Tso Cai Electrolytic: Cov cathode hluav taws xob ua raws li "cathode" thiab muab tso rau hauv ib qho zinc {0} muaj cov tshuaj electrolilating (xws li zinc chloride lossis zinc sulfate). Kev ua kom ncaj qha tam sim no yog siv, ua rau lub zinc ions hauv cov hluav taws xob hauv hluav taws xob mus rau ntawm cov hlau saum npoo av, qhov chaw uas lawv precipitate thiab tso nyiaj ua ib txheej ntshiab zinc txheej.
Post {{0 {{}} Kev Kho Mob: Tom qab Kev Kho Mob Hluav Taws Xob), kom tshem tawm cov kauj ruam txuas ntxiv, yuav tsum tau ua yeeb yaj kiab uas yuav tsum tau ua tiav rau kev txhim kho corrosion), thiab kom qhuav.
Cov Ntsiab Lus Tseem Ceeb:
Cov Khaub Ncaws Hnav thiab Zinc Zinc: Lub zinc Txheej yog nyias (feem ntau 5 {{{-}}}}}}}}. Cov Txheej Txheem Yooj Yim: Cov txheej txheej zinc zoo nkauj tuaj yeem ua kom haum rau kev tswj hwm me me, thaum noj ntau dua li kub-dip galvanizing.
Qhov tsis zoo thiab cov ntawv thov:
Cov txheej corrosion tsis muaj zog: Cov txheej zinc txheej yog nyias thiab lub cev sib khi, yooj yim detaching vim muaj kev cuam tshuam thiab kev sib txhuam sab nraum zoov ntawm tsuas yog 3-8 xyoos.
Cov Kev Siv: Cov cuab yeej siv hauv tsev sab hauv tsev, xws li cov khoom siv hluav taws xob thiab cov khoom siv kho tshuab hluav taws xob cov khoom siv thiab tsos.
3. Galvannealing (GA)
Qhov no yog ib txheej txheem derivative ntawm kub - dip galvanizing. Nws cov ntsiab lus tseem ceeb yog "cua sov ntxiv tom qab kub- dip txheej," tsim ib qho "zinc {}}}} Ik hlau txheej."
Txheej txheem hauv txoj ntsiab cai:
Ua ntej, concectional kub - dip galvanizing ua tiav (sib sau ib qho zinc {} Ick txheej ua raws los ntawm cov txheej dawb huv huv si zinc).
Lub voj voog bar yog ces muab tso rau hauv lub tshuab cua sov thiab muaj nyob rau hauv ib lub sijhawm " Cov Nta Tseem Ceeb:
Qhov saum npoo yog tsaus grey, tsis muaj zinc ntshiab. Nws muaj qhov nyuaj dua li cov kev hnav ntshiab zoo nkauj, muaj cov hnav zoo dua, thiab tsim tsis tau "zinc fume" thaum muaj kev sib tw ntau thaum vuam dinc).
Txawm li cas los xij, nws corrosion tsis kam yog qis dua li hais tias ntawm kub - dip galvanizing, thiab cov txheej txheem yog kim, ua rau muaj kev ntsuas nqaim.
Cov ntawv thov uas tsim nyog: Cov ntawv thov yuav tsum tau siv vuam thiab yuav tsum tau hnav tsis kam, xws li cov khoom lag luam chaspection thiab welded txuas rau cov khoom siv tshwj xeeb.