1. Kev txheeb xyuas cov khoom
Txheem:ASTM A790 / A790M (Standard Specification rau Seamless thiab Welded Ferritic / Austenitic Stainless Hlau Yeeb)
UNS Number: S32760
Common Trade Names:Super Duplex Stainless Hlau; "Zeron 100" (tus tswv version).
2. Kev siv thawj zaug thiab kev siv
S32760 cov kav dej yog tsim los rau qhov xav tau ib puag ncig uas tus qauv stainless hlau zoo li 304/316 lossis txawm tias tus qauv duplex 2205 (S31803 / S32205) tsis txaus. Lawv cov ntawv thov tseem ceeb suav nrog:
Roj & Roj Kev Lag Luam:
Offshore:Subsea flow kab, risers, umbilicals, thiab cov txheej txheem tuav raw, corrosive hydrocarbons.
Downhole:Tubing thiab casing hauv qaub (H₂S{0}}muaj) qhov dej.
Onshore:Cov cuab yeej ua haujlwm rau corrosive thiab siab - cov kua dej siab.
Chemical & Petrochemical ua:
Kev thauj cov kua qaub heev, chlorides, thiab lwm yam tshuaj phem heev.
Pollution Control & Flue Gas Desulfurization (FGD):
Cov kab ke tuav cov tshuaj chlorides thiab lwm yam kuab paug hauv cov tshuab ntxhua khaub ncaws.
Marine & Seawater Systems:
Seawater cooling pipes, ballast water systems, thiab heat exchangers on ships and offshore platforms.
Pulp & Ntawv Kev Lag Luam:
Cov cuab yeej siv hauv cov tshuab digesters thiab cov nroj tsuag tshuaj dawb uas muaj chloride corrosion yog teeb meem.
3. Cov txiaj ntsig tseem ceeb thiab qhov zoo
Qhov nrov ntawm S32760 cov kav dej yog los ntawm lawv cov khoom sib xyaw ua ke zoo tshaj:
Exceptional Corrosion Resistance:
Pitting thiab Crevice Corrosion:High Pitting Resistance Tus lej sib npaug (PREN> 40), muab kev tiv thaiv zoo rau chloride-induced pitting thiab crevice corrosion.
Stress Corrosion Cracking (SCC):Kev tiv thaiv zoo heev rau chloride kev nyuaj siab corrosion tawg, ib qho kev ua tsis tiav rau cov qauv austenitic steels.
General Corrosion:Kev tiv thaiv zoo rau ntau cov kua qaub, suav nrog sulfuric thiab phosphoric acids.
High Mechanical Strength:
Muaj kwv yees liob zaug lub zog tawm losntawm cov pa austenitic stainless hlau (xws li, 304, 316). Qhov no tso cai rau kev tsim cov txheej txheem thinner -walled, sib dua- hnyav lub nkoj thiab cov kav dej, txuag cov nqi khoom thiab qhov hnyav.
Zoo heev Erosion-Corrosion thiab Abrasion Resistance:
Lub zog siab thiab hardness muab kev tiv thaiv zoo tshaj rau kev yaig los ntawm cov xuab zeb, slurries, thiab siab - cov kua dej nrawm.
Zoo Weldability:
Yuav tau welded siv cov tswv yim, txawm hais tias nws yuav tsum tau ceev faj tswj cov cua sov input thiab siv ntau tshaj -alloyed muab tub lim hlau (xws li, ERNiCrMo-4) kom tswj cov corrosion-resistant microstructure nyob rau hauv weld cheeb tsam.
4. Kev Txhim Kho Kev Zeem Muag thiab yav tom ntej Outlook
Lub neej yav tom ntej rau S32760 thiab cov qib super duplex zoo sib xws yog qhov ci ntsa iab, uas tau tsav los ntawm kev lag luam thoob ntiaj teb:
Kev thov los ntawm Energy Sector:
Kev tshawb nrhiav txuas ntxiv thiab tsim khoom hauv qhov tob - dej roj thiab roj av, nrog rau lawv cov kev kub ntxhov siab, qhov kub thiab txias, thiab qhov chaw ua haujlwm qaub qaub, yuav yog tus tsav tsheb loj.
Kev loj hlob hauv subsea ua lag luam ncaj qha nce qhov kev thov rau siab - cov ntaub ntawv ua tau zoo xws li S32760.
Expansion rau New Energy Areas:
Geothermal Zog:Cov nroj tsuag no ua haujlwm kub, ntsev, thiab feem ntau acidic brine, ua S32760 yog ib qho khoom siv zoo tshaj plaws rau cov kav dej thiab cov kav dej.
Carbon Capture, Siv, thiab Cia (CCUS):Kev thauj mus los thiab txhaj tshuaj ntawm CO₂ ntes tau, uas tuaj yeem tsim cov kua qaub corrosive thaum tsis huv, yuav xav tau corrosion{0}}cov alloys tiv taus zoo li super duplex.
Sustainability thiab Life-Cycycle Cost (LCC) Advantage:
Kev lag luam tau tsom mus rau Lub Neej-Cov Nqi Tshaj Lij Tshaj li tus nqi pib. Thaum S32760 muaj tus nqi pib siab dua li carbon steel lossis 316L, nwsLub neej ua haujlwm ntev, txo kev saib xyuas, thiab tshem tawm cov tshuaj inhibitorsua kom nws muaj kev lag luam ntau dua thiab muaj txiaj ntsig zoo dua li cov cuab yeej cuab tam lub neej.
Khoom siv thiab txheej txheem Innovation:
Kev tshawb fawb tsis tu ncua hauv metallurgy thiab kev tsim khoom (xws li, txhim kho thermomechanical ua, cov txheej txheem vuam siab heev) yuav ntxiv dag zog rau qhov sib xws, kev ua tau zoo, thiab muaj cov kav dej S32760, muaj peev xwm qhib cov ntawv thov tshiab.
Xaus
ASTM A790 S32760 super duplex stainless hlau yeeb nkab yog ib qho kev daws teeb meem zoo tshaj plaws rau lub ntiaj teb nyuaj tshaj plaws corrosive thiab siab - kev siv zog. Nws qhov tshwj xeeb sib xyaw ua ke ntawm huab cua tiv thaiv corrosion, siab zog, thiab kav ntev ua haujlwm nws yog cov khoom siv tseem ceeb rau yav tom ntej ntawm lub zog, tshuaj, thiab kev lag luam marine. Raws li kev ua haujlwm ib puag ncig ua nruj dua thiab kev tsom mus rau kev ruaj khov, qhov kev thov thiab kev cia siab rau S32760 tau teeb tsa rau kev loj hlob tseem ceeb.
