High -} Cov Ntsiab Lus
IbA335 P122 Seamless Steel Yeeb Nkabyog aSeamless Ferritic Alloy - Cov Yeeb NkabTsim rauhigh - kev pab kub, feem ntau hauv cov nroj tsuag hluav taws xob (fossil thiab nuclear), boilers, thiab petrochemical cov chaw. Qhov "P122" yog hais txog ib qib ntawm chromium - molybdenum alloy steel nrog txhim kho lub zog.
1. Kev rhuav tshem ntawm kev tsim qauv
ASTM A335 / ASME SA335: Qhov no yog tus qauv uas tswj hwm cov khoom siv.
ASTM: American Society rau kev sim thiab cov ntaub ntawv.
ASME: American Society of Neeg Kho Tshuab engineers (feem ntau siv "sa sa" prefix rau cov specifications zoo tib yam).
Tag nrho cov npe: Txheem Qhov Kev Ntsuas Rau Seamless Ferritic Alloy - steel yeeb nkab rau siab-}} kub kev pab.
Cov lus tseem ceeb yogTsis ntse, Ferritic alloy - steel, thiabSiab - kub.
P122: Qhov no yog qhov "qib kawm ntawv", uas txhais tau cov tshuaj lom neeg tshwj xeeb thiab cov khoom siv neeg kho tshuab.
"P" sawv rau "Yeeb Nkab".
"122" yog tus cim tshwj xeeb rau qhov tshwj xeeb no muaj pes tsawg leeg.
2. Tshuaj lom neeg sib xyaw (cov ntsiab lus tseem ceeb)
P122 yog ib qho siab tshaj - chromium steel tsim rau kev txhim kho kev txuag hluav taws xob. Nws cov ntsiab lus tseem ceeb yog:
Chromium (CR): ~ 10.5-12.5%{-}}}}}}}}}} Cov kev tiv thaiv zoo heev rau oxidation (scaling) thiab corrosion) thiab corrosion ntawm qhov kub.
Tungsten (w): ~ 1.5-2.5%{{0- Ib qhov tseem ceeb ntxiv uas txhim kho cov hlav creep resistance.
Molybdenum (MO): ~ 0.25-0.6%- Tau ua kom muaj zog thiab hardness ntawm qhov kub.
Vanadium (V): ~ 0.15-0.30%-} Cov ntaub ntawv ruaj khov carbides uas nce lub zog thiab cov quav.
Cov pa roj carbon (c): ~ 0.07-0.14%{{0 {}} Tseem ceeb rau lub zog.
Boron (b), cobalt (CO), niobium (nb): Ntxiv rau hauv cov nyiaj me, tswj hwm kom txhawb ntxiv txhim kho lub zog thiab microstration ruaj khov.
Tooj liab (Cu): ~ 0.3-1.7%{{0-} Siv nyob rau qee cov alloys ua tau zoo los hloov ib feem ntawm cov ntsiab lus tsib xee.
Nco tseg:P122 tau tsim los ua ib feem ntawm tsev neeg ntawm cov hlau (xws li P91 thiab P92) kom tso cai rau kev ua haujlwm siab dua thiab ntsuas kev ua haujlwm loj dua.
3. Cov Khoom Siv Kho Tshuab
Cov yeeb nkab yuav tsum tau raws li cov khoom ntiag tug tsawg kawg ntawm chav sov:
Lub zog tensile: 620 MPA (90 Ksi) yam tsawg kawg nkaus)
Paib lub zog: 400 mpa (58 ksi) yam tsawg kawg nkaus)
Elongation:Sib txawv nrog qhov loj ntawm cov yeeb nkab tab sis yog feem ntau20% tsawg kawg.
Nws cov cuab yeej tseem ceeb tshaj plaws, txawm li cas los xij, yog nwsLub zog ua kom muaj zogThaum nce qhov kub siab (piv txwv li, 600℃/ 1112℃f), uas yog farInful f)- qib alloys.
4. Cov yam ntxwv tseem ceeb & Cov txiaj ntsig
Siab Creity Lub Zog:Tuaj yeem tiv thaiv cov kev ntxhov siab loj ntev ntev ntawm lub sijhawm kub uas tsis muaj kev txwv lossis tsis ua haujlwm.
Oxidation zoo ua tsis kam:Lub siab chromium cov ntsiab lus tsim ib txheej tiv thaiv uas tiv thaiv kev ntsuas hauv chav thiab cov pa roj av.
Zoo microstration stability:Tsis kam tawm tsam kev ua haujlwm ntev ntev.
Seamless kev tsim kho:Tsis muaj qhov ntev weld seam, ua rau nws muaj zog thiab txhim khu kev qha nyob hauv siab thiab thermal cycling. Tshem tawm ib qho kev ua tsis tau.
5. Cov Ntawv Thov Tib Neeg
Qhov no yog ib qho tshwj xeeb, siab {- kev ua tau cov khoom siv hauv qhov tseem ceeb, siab} lub zog hluav taws xob:
SuperHeater thiab Reheater LeegHauv hwj huam boilers
Cov Kav Hauv Paus tseem ceebthiabKub Reheat PipesHauv cov nroj tsuag fais fab
High -} kub taub hauthiabmanifolds
Kua Nplhaib hauv Petrochemical Nroj TsuagNrog siab -} kub cov txheej txheem
Sib piv nrog cov qhab nia zoo sib xws
| Teem nqi | Lub Npe | Cov Nta Tseem Ceeb | Raug siv cov ntaub ntawv |
|---|---|---|---|
| A335 P9 | 9mo 1mo | Classic 9% chromium steel. Lub zog zoo, zoo -} tsim. | High -} kub piping, tab sis tau hloov kho los ntawm cov qib tshiab tshiab. |
| A335 P91 | T91/P91 | Txhim kho 9cr steel nrog vanadium thiab niobium. Ntau dua lub zog dua p9. | Lub workorse rau niaj hnub siab - kub piping. |
| A335 P92 | NF616 / P92 | Zoo ib yam li P91 tab sis nrog ntxiv Tungsten.Siab dua lub zog dua P91. | Rau qhov siab tshaj plaws txhawb nqa ultra - cov nroj tsuag supercritical. |
| A335 P122 | HCM12A / P122 | ~ 11% chromium nrog tungsten thiab tooj liab.Zoo oxidation tsis kam tshaj P91 / P92. | Siv qhov twg ob qho tib si muaj zog thiab zoo tshaj cov oxidation kuj xav tau. |
Tag
Hauv ntej, thaum koj qhia ib qhoA335 P122 Seamless Steel Yeeb Nkab, koj tau xaj ib qho hwm, siab - Performance freating high {{{{{{{}} qhov kev siv kub, feem ntau nyob rau hauv lub zog loj hlob kev lag luam. Nws muaj pes tsawg leeg yog ua tib zoo tu tshuab los muab cov nyiaj tshuav ntawm ntev {}}} Lub zog nkag mus rau oxidation.
