Dab tsi yog qhov sib txawv ntawm A335 P9 thiab P91

A335 P91 Alloy Yeeb Nkab thiab A335 P9 Alloy Alloy Cov Khoom Siv Hluav Taws Xob A335 no} Qhov sib txawv ntawm ob qho kev dag ntawm ob qho lus dag hauv qhov sib txawv Tshuaj lom neeg muaj pes tsawg leeg, uas ua rau cov khoom sib txawv thiab tseem cuam tshuam rau cov khoom sib txawv ntawm cov hlau nws tus kheej. qhov tshwj xeeb sib txawv yog raws li hauv qab no:

1. core core composition txawv
P9 (Cov Hlau Chromium-Molybdenum Hlau)
Tsoos 9cr {{1} mo system (CR 32}%, Mo≈1%), tsis muaj Microalloy ntxiv dag zog rau cov ntsiab {}}
High cov ntsiab lus carbon (0 .}} 15% -0.25%), kev tua tsiaj weldability rau lub zog rau lub zog.
P91 (txhawb cov chromium-molybdenum-vanadium steel)
V, nb, n (vanadium 0.18% -0.25%, niobium 0.06% -0.1% -0.07%) ntxiv rau P 9.
Cov ntsiab lus carbon yog txo (0 . 08% -0.12%), txhim kho wardability thiab nruj.
2. qhov kub ua tau zoo sib piv
Tshav Kub Kub Zog
P9: Siv tau kub thiab txias tsawg dua lossis sib npaug nrog 600 degree, 600℃cua sov muaj zog tsuas yog 1/3 ntawm P 91.
P91: Lub zog kawg ntawm 620℃yog ntau dua los yog sib npaug rau 100Mpa, thiab cov kev ntxhov siab uas tau tshaj tawm saum toj 550℃yog 2 zaug ntawm P9.
Anti-oxidation thiab corrosion tsis kam

P91 tau ntxiv dag zog los ntawm nag lossis daus ntawm Vanadium-Niobium carbides, thiab nws txoj kev tiv taus rau chav corrosion zoo dua li ntawm P9.

P9 yog nquag ua kom muaj cov sulpur high-temperature temperature temperature sulpur hauv sulphur muaj ib puag ncig Oxidation oxidation oxidation oxidation oxidation oxidation oxidation vim nitrogen {}}}

{{0 {}} Daim ntawv thov daim ntawv thov sib txawv
Cov Kev Siv Raug Nyob Ntawm P9

Cua sov rauv rau ntawm cov roj hmab ntxiv lossis sib npaug hauv cov roj av ntxiv (xws li ntu hluav taws xob ntawm cov cub tawg) .

SuperHeater / Reheathere cov kav kav ntawm nruab nrab thiab cov roj siab boilers (nruab nrab kub tsawg dua lossis sib npaug nrog 550 degree) {1} {1} {1}

Irreplaceability ntawm P91

Lub zog supercritical: cov kav dej loj thiab headers nrog phab ntsa sov qis dua los yog sib npaug ntawm cov p9) {

4. txheej txheem thiab nqi sib txawv
Vuam rhiab: P9 yuav tsum muaj ntau dua los yog sib npaug + Weld Preated + P91 teev (P91 Qib Kub Li Cas) Tsis muaj kev hloov ntau zaus). ️ Cov lus piav qhia meej ntawm cov tseem ceeb yuam kev
Lub Koom Haum Ntaus: Ob qho tib si Martensitic Kub-Resistant Steel (tsis yog-pearlite hydrittlement of P91