Lub ntsiab
10Cr9movnb yog ib tus qauv suav hauv Suav teb ferritic tshav kub-} tiv taus hlau. Nws cov qauv raws li Suav GB tus qauv, qhov twg cov naj npawb sawv cev rau cov feem pua ntawm feem pua ntawm cov ntsiab lus tseem ceeb:
10: Kwv yees li 0.10% cov pa roj carbon (c)
Cr9: Kwv yees li 9% chromium (CR)
Mo: Muaj molybdenum (mo)
V: Muaj vanadium (v)
Nb: Muaj niobium (nb)
Nws yog hloov kho version ntawm classic 9% chromium cov hlau (zoo li ASTM A335 P91 lossis yog tsim rau kev txhim kho siab thiab nkag dag zog.
Qhov feem ntau muaj feem cuam tshuam rau cov yeeb nkab steel hauv Suav teb yogGB 5310, uas yog tus qauv rau "Seamless cov hlau leeg thiab kav rau kev kub siab Boiler."
Tshuaj lom neeg tshuaj lom neeg (ib txwm / raws li GB 5310)
Cov tshuaj lom neeg muaj pes tsawg leeg tau tswj hwm kom ntseeg tau cov khoom xav tau. Ib qho yog li yog raws li hauv qab no:
| Lub ntsiab | Cov ntsiab lus (%) | Lub luag haujlwm ntawm lub caij |
|---|---|---|
| Carbon (c) | 0.08 - 0.12 | Ua kom muaj zog dua tab sis yuav tsum tau tswj hwm rau Weldability. |
| Silicon (si) | Tsawg dua los yog sib npaug rau 0.50 | Deagidizer thaum lub sij hawm statmaking statmaking, txhim kho lub zog. |
| Manganese (mn) | 0.30 - 0.60 | Ua kom muaj zog zog thiab ua tsis tau. |
| Chromium (cr) | 8.50 - 9.50 | Muab cov oxidation zoo heev thiab corrosion tsis kam ntawm qhov kub. |
| Molybdenum (mo) | 0.85 - 1.05 | Txhim kho lub zog ntawm kev kub siab thiab txhim kho cov creep kuj. |
| Vanadium (V) | 0.18 - 0.25 | Cov ntaub ntawv nplua carbides (VC) uas nce lub zog thiab cov quav. |
| Niobium (nb) | 0.06 - 0.10 | Cov ntaub ntawv ruaj khov carbides thiab Nitrides (NBC, NBN), NBN cov nyom thiab tiv thaiv cov nyom loj hlob, ua kom muaj zog thiab ua kom muaj zog. |
| Nitrogen (n) | 0.03 - 0.07 | Ua haujlwm nrog NB thiab v los tsim ntxiv dag zog rau cov pa roj carbonitrides. |
| Npib tsib caug (ni) | Tsawg dua los yog sib npaug rau 0.40 | Txhim kho kev nruj. |
| Phosphorus (p) | Tsawg dua los yog sib luag rau 0.020 | Impurity, khaws qis kom tiv thaiv emgrittlement. |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.010 | Impurity, khaws cia kom tsis txhob txhim kho kev ua haujlwm kub thiab tawv. |
Cov cuab yeej kho tshuab (raug / raws li GB 5310)
Tom qab ib txwm ua thiab tempering kev kho cua sov, cov kav dej yuav tsum tau raws li cov khoom siv kho kom nruj.
| Ntiag tug | Tus nqi |
|---|---|
| Lub zog tensile (RM) | Ntau dua los yog sib npaug rau 590 mpa |
| Yield zog (RP0.2) | Ntau dua los yog sib npaug rau 415 MPa |
| Elongation (a) | Ntau dua los yog sib npaug rau 20% |
| Kev Cuam Tshuam Lub Zog (KV2) | Ntau dua los yog sib npaug rau 40 j (ntawm chav tsev kub) |
| Kev nyuaj | Tsawg dua los yog sib npaug nrog 250 HBW |
Cov yam ntxwv tseem ceeb thiab cov txiaj ntsig zoo
Zoo heev Creep Zog:Nov yog thawj qhov txiaj ntsig. Nws tuaj yeem tiv thaiv ntau cov kev ntxhov siab rau lub sijhawm ntev ntev ntawm cov kub (feem ntau txog 600-620 degree) tsis muaj qhov tseem ceeb deformation (nkag).
Zoo oxidation tiv:Lub 9% cov ntsiab lus chromium muab cov txheej tiv thaiv oxide uas tiv thooj (oxidation) hauv cov pa thiab roj nrog ib puag ncig.
Siab - kub lub zog:Saib xyuas lub zog siab heev thiab kom muaj zog ntawm cov pa roj carbon hlau yuav ua rau qaug zog heev.
Zoo thermal floueflue:Yuav tuaj yeem tiv taus cov voj voog uas yog ntawm cua sov thiab cua txias, uas muaj ntau nyob rau hauv cov haujlwm muaj hwj chim.
Zoo microstration stability:Kev sib xyaw ntawm V, NB, thiab n ua kom cov microstructure tseem ruaj nyob ntev ntev, tiv thaiv kev ua tsis tiav kev ua tsis tiav.
Cov ntawv thov MAIN
10Cr9MoVNb seamless pipes are exclusively used in demanding high-temperature and high-pressure environments:
SuperHeater thiab Reheater LeegHauv thee -} tshem tawm cov nroj tsuag hluav taws xob.
Cov kav dej loj thiab headersNyob rau hauv Ultra - supercritical (USC) fais fab boilers.
High - kev hloov pauv kub kub.
Cov xov hluav taws xob hauv cov nroj tsuag petrochemicalRau siab -} cov txheej txheem kub.
Cov qhab nia sib npaug
10Cr9movnb yog cov suav ze - sib npaug rau ntau cov qib sib txawv. Cov tshuaj lom thiab cov khoom yog qhov zoo heev, txawm hais tias tsis zoo ib yam.
| Lub hom phiaj | Teem nqi | Lub Npe |
|---|---|---|
| Tuam Tshoj (GB) | 10Cr9movnb | -- |
| Tebchaws Asmeskas (ASTM) | A335 P91 / A213 T91 | "P91" lossis "T91" |
| Teb chaws Europe (en) | X10crmovnb9-1 | -- |
| Nyiv (JIS) | Stba 29 / STPA 29 | -- |
Nco tseg:Thaum lawv muaj sib txawv, muaj tej zaum yuav muaj kev sib txawv me me hauv tshuaj lom neeg txwv thiab kev kho kom sov ntawm cov qauv sib txawv. Nws yog qhov tseem ceeb los qhia txog tus qauv tsim nyog uas yuav tsum tau ua rau ib qhov project.
Kev tsim khoom thiab kev kho cua sov
Kev ua yeeb yam ntawm 10cr9movnb yog siab nyob ntawm nws cov kev tsim kho ncaj ncees thiab kev kho cua sov:
Raug:Tsim los ntawm cov txheej txheem seamless xws li kub extrusion lossis teb thau teb los xyuas kom meej hom qauv muaj peev xwm ntawm nrog kev siab siab siab.
Kev Kho Cua Sov:Tus qauv thiab kev kho cua sov yuav tsum tau yogNormalizing + tempering.
Normalizing:Rhaub rau ib ncig ntawm 1040 - 1080 degree, tom qab ntawd cua txias. Qhov no tsim cov nplua, muaj zog martensitic microstructure.
Tempering:Rov ua kom txog 730 - 780 degree, ces huab cua txias. Qhov no relieves kev ntxhov siab sab hauv los ntawm kev coj ua, txhim kho kev ua kom nruj, thiab precipitates cov carbides zoo (V, NB) lub zog siab.
Daim Ntawv Txiav Txim Rau Vuam
Vuam 10Cr9Movnb yuav tsum tau ceev faj cov txheej txheem vim nws cov ntsiab lus siab:
Ua ntej - cua sovyog qhov tseem ceeb kom tiv thaiv kev tawg txias.
Post - Weld Kev Kho Tshav Kub (PWHT)Yog yuav tsum tau ua kom rov kho microstructure thiab kev nruj nyob rau hauv tshav kub -} bead cuam tshuam thaj chaw (Haz). Lub npau taws kub yog feem ntau siv rau pWHT.
Sib phim cov tub rog(Xws li, er90s - b9 rau tig / Mig, E9015-B9 rau SMAW) yuav tsum tau siv.
Lub ntsiab
Hauv kev xaus,10Cr9Movnb Seamless Steel Yeeb NkabYog tus hwm, siab -}} Ention allloy stectifically encifically enventected rau qhov siab tshaj plaws- kev pab kub. Nws lub zog zoo tshaj plaws thiab oxidation tiv taus ua nws cov khoom tseem ceeb rau kev txhim kho cov kev ua tau zoo thiab kev ntseeg tau cov khoom siv hluav taws xob niaj hnub thiab cov hluav taws xob thermal.
