ASTM A789 UNRONS TSIS MUAJ S {1}}} rab yeeb nkab

ASTM A789 unsist s {1}} Cov yeeb nkab ob chav yas, tshuab hluav taws xob Super Duplex s32750 hloov cov yeeb nkab, Super Duplex EFW Yeeb.

2507 yog qhov ua tau zoo duplex stainless hlau uas muab cov khoom ntawm ob qho tib si ustenitic thiab ferritic steel qauv. Tus qauv tshwj xeeb no muab nws ua tsis zoo rau kev xeb, muaj lub zog siab, thiab cov khoom siv zoo tshaj. Ntawm no yog cov yam ntxwv tseem ceeb ntawm2507 stainless hlau kav:

1. Cov qauv thiab cov qauv

2507 stainless hlauyog ib lub duplex alloy uas feem ntau muaj:

25% chromium (CR)- Rau cov khoom lag luam tsis kam

4% npib tsib xee (ni)- Txhawm rau txhim kho kev nruj thiab ductility

{{0 {0}}. 3% Molybdenum (MO)- txhim kho tsis kam rau pitting thiab crevice corrosion

Tshuav Hlau (Fe)- Muaj lub zog thiab cov qauv kev ntseeg

Qhov kev sib xyaw no muab nws aOb-Theem Microstructuremuaj kwv yees li 50% austenite thiab 50% ferrite. Lub Tsev Kho Kom MuajKev ua haujlwm zoo dua ntawm lub zog thiab corrosion tsis kamPiv rau ib txwm atustenitic stainless hlau zoo li 304 lossis 316.

2. Corrosion Kuj

Superior resistance rau corrosion: ASTM A789 UNRONS TSIS MUAJ S {1}}} rab yeeb nkabMuaj qhov tshwj kev zam rau ntau qhov kev ua kom muaj kev ntxhov siab, suav nrog:

Pitting corrosion(Vim yog cov ntsiab lus chromium siab)

Crevice corrosion

Kev ntxhov siab corrosion tawg(SCC)

Chloride kev ntxhov siab corrosion(Vim yog Molybdenum cov ntsiab lus)

Qhov no ua rau nws zoo tagnrho rau kev siv nyob rau hauv seaterwater, tshuaj lom neeg, roj thiab cov roj thiab thaj chaw uas muaj qhov siab ua rau xeb yog qhov tseem ceeb.

3. Lub Zog Siab

Super Duplex S32750 Yeeb NkabMuaj lub zog siab tensile lub zog (txog 620 MPa lossis 90 Ksi) thiab tawm los ntawm 450 mpa lossis 65 ksi).

Kev sib xyaw ntawm cov ntsiab lus chromium high scromium cov ntsiab lus thiab cov qauv duplex uas muaj zog dua ntau lwm cov hlau, suav nrog 304 thiab 316, uaASTM A789 SUPER DUPLEX Stainless Hlau KavHaum rau cov ntawv thov txheej txheem txheej txheem.

4. Cov cuab yeej siv zog tshaj plaws

Zoo cuam tshuam cov tawv: Txawm hais tias nws lub zog,2507Cov khoom ua pov thawj zoo heev cuam tshuam nyuaj, tshwj xeeb yog thaum kub qis, ua rau nws haum rau kev siv nyob rau hauv ib puag ncig ib puag ncig.

High Leput Zog: Lub chav kho kom zooUNR UNS UNR UNR UNRDED YEEB NKABTseem ceeb dua cog lus lub zog tshaj li Austenitic cov hlau zoo li 316 lossis 304, ua rau nws zoo tagnrho rau kev siv hauv cov haujlwm hnyav.

Kev ua siab loj: Txawm hais tias nws muaj zog dua ntau lwm cov alloys,2507Tswj kev kawm qib zoo, tso cai rau nws los ua kom zoo thiab welded zoo.

5. Kev muaj txiaj ntsig zoo weldability

Super Duplex 2507 Yeeb NkabMuab cov weldability weldability nrog cov txheej txheem tsim nyog. Txawm li cas los xij, vim lub siab chromium thiab molybdenum cov ntsiab lus, cov xim tshwj xeeb yuav tsum tau them rau cov theem uas tsis xav tau uas tuaj yeem txo kev ua tau zoo.

Tom qab kev kho cua sov (pWHT) yuav tsis tas yuav tsum muaj, tab sis tswj cov tswv yim tshav kub thaum lub sij hawm vuam yog qhov tseem ceeb los khaws cov micruplex microstructure.

Cov Kev Vuam Vuam Sib Tw MuajTig (Tungsten Inert Roj), MIG (HLAU INTER GAS), thiabLo vuam.

6. Tsis kam mus rau qhov ntsuas kub siab

Super Duplex S32750 Hloov Yeebua tau zoo nyob rau ntawm qhov kub siab dua, tswj nws lub zog thiab corrosion tsis kam txog300 degree (570 degree f).

Tshaj li no, nws tuaj yeem raug kev txom nyem los ntawm kev sib cav thiab ib qho kev txo qis rau cov kev pab kub tshaj plaws, yog li nws tsis pom zoo rau qhov ntsuas kub, tsis zoo li almoys xws li inconel lossis hastelloy.

7. Kev thov

2507 stainless hlau kavtau siv dav hauv kev lag luam thiab cov ntawv thov uas yuav tsum tau ua ke ntawm:

Siab Zog

Corrosion Kuj

Kuj rau pitting thiab crevice corrosionNyob rau hauv cov kev xeb loj heev, xws li:

Tubrog Nkoj thiab Sab Nraud: Seasater platform, Offshore platforms, kev sib pauv hluav taws xob, cov twj tso cua tshuab uas raug rau dej hiav txwv.

Tshuaj thiab Petrochemical: Pipelines thiab cov cuab yeej siv cov txheej txheem siv nyob rau hauv cov khoom siv txhoj puab ntau, xws li hydrochloric acid tuav, chlorine thiab brine ib puag ncig.

Roj thiab roj: Pipelines, cov xwm txheej zoo, thiab cov cuab yeej siv roj thiab dej hiav txwv.

Pulp thiab cov ntawv lag luam: Rau kev tuav cov tshuaj chlorine raws li cov tshuaj pulping.

Cov Hluav Taws Xob Tshav Kub Kub: Tshwj xeeb nyob rau hauv seawater lossis brine txias tshuab.

8. Kuj rau Hydrogen Sulfide (H2S)

Duplex uns S32750 Welded Yeeb Nkabua tau zoo tshaj plaws nyob rau hauv cov kua av roj av, qhov twgH2S(Hydrogen Sulfide) tej zaum yuav muaj, ntsib hauv cov roj thiab roj kev lag luam. Nws tiv tausSulfide kev ntxhov siab tawg(SSC), uas yog qhov kev txhawj xeeb loj hauv cov chaw no.

9. Nqi

2507 stainless hlaunyhav kom kim dua lwm cov alloys nyiam304thiab316Vim yog cov ntsiab lus ntau ntxiv, tshwj xeeb tshaj yog chromium thiab molybdenum. Txawm li cas los xij, nws cov zoo tshaj corrosion tsis kam thiab muaj zog ntau zaus ua rau nws muaj nqi ntau dua nyob rau hauv ib puag ncig txom nyem thiab tsawg dua cov nqi kev pab cuam ntev dua thiab tus nqi kho mob ntev dua.

10. Sib Nqus Cov Khoom Siv

Super Duplex 2507 EFW Yeebyog sib nqus me ntsis nyob rau hauv nws anealed mob, uas yog ib txwm muaj rau duplex stainless hlau vim lawv theem Ferritic. Txawm li cas los xij, nws cov khoom sib nqus muaj ntau dua li cov hlau uas muaj ferritic stainless thiab tsis tshua muaj tshaj tawm ntau dua li cov alloys zoo li 430.

11. Txij Nkawm thiab Ruaj Khwv

2507 kav dejkev pubTsawg txij nkawmVim yog lawv lub siab tiv taus corrosion thiab hnav. Qhov no ua rau lawv xaiv zoo rau kev thov uas ntev kev ua haujlwm thiab kav ntev yog qhov tseem ceeb, xws li ntug dej hiav txwv thiab tshuaj lom neeg.

Ntsiab ntawm 2507 Stainless Hlau Yeeb Nkab

Xaus:

2507 Super DupleX Steel Yeeb Nkabyog ib tug neeg ruaj khov, high-zog khoom haum rau cov chaw hnyav uas muaj kev tiv thaiv chloside thiab H2S, yog qhov tseem ceeb heev. Nws yog qhov zoo rau cov tubrog nkoj, tawm tsam, tshuaj lom neeg, thiab roj thiab roj kev lag luam. Thaum2507yog kim dua li alloys nyiam304lossis316, nws txoj kev ua tau zoo tshaj plaws ua rau muaj kev sib zog ua rau nws muaj nqi ntau dua hauv lub sijhawm ntev, txo cov nqi kho thiab hloov tus nqi. Yog tias koj xav tau cov khoom siv uas tuaj yeem tiv thaiv huab nrog kev pheej hmoo tsawg,2507 DUPLEX Stainless Hlau Yeeb Nkabyog qhov kev xaiv zoo heev.

Cim npe nrov: ASTM A789 unsist s {1}}} Cov yeeb nkab yas, Tuam Tshoj, tuam ntxhab, Hoobkas, nqe, Mekas