P91 F91 Alloy Steel Flange cov ntsiab lus
Cov qauv tseem ceeb ntawm P91 alloy tau muab faib ua peb ntu: cov qauv khoom siv, cov qauv flange loj, thiab cov qauv siv hauv tsev. Cov hauv qab no yog ib daim ntawv teev tag nrho thiab cov ntsiab lus tseem ceeb:
1, Cov qauv khoom (P91 / F91)
P91 yog 9Cr-1Mo-V-Nb-N martensitic tshav kub-resistant steel, nrog flange forging qib F91, thiab cov tub ntxhais tua:
ASTM A182 / A182M F91 (American txuj forging, flange cov khoom tseem ceeb)
UNS: K90901
Tshuaj muaj pes tsawg leeg (wt%): C 0.08-0.12; 0.30–0.60 hli; Si Less tshaj los yog sib npaug rau 0.50; Cr 8.0–9.5; Mos 0.85–1.05; V 0.18–0.25; Nb 0.03–0.07; N 0.03–0.07; S/P Tsawg dua lossis sib npaug rau 0.020.
Mechanical zog: Tensile zog Ntau dua los yog sib npaug rau 620MPa; Yield Ntau dua lossis sib npaug rau 415MPa; Elongation tus nqi Ntau dua lossis sib npaug li 20%; Hardness 190-248HBW.
Kev kho cua sov: normalizing + tempering (normalizing 1040-1080 degree; tempering 730-800 degree).
ASME SA182 F91 (sib npaug rau A182, feem ntau siv rau cov hlab ntsha siab / boilers).
Cov khoom siv yeeb nkab: ASTM A335 P91; Board: SA387 Gr91 Cl2.
Cov khoom siv hauv tsev: GB / T 10Cr9Mo1VNbN (GB / T 5310, NB / T 47008).
2, Flange loj thiab RTJ sealing nto tus qauv
ASME B16.5 (Core, NPS 1/2-24", Chav Kawm 150-2500)
WN: Vuam flange; RTJ: Nplhaib kev sib txuas nto (R / RX / BX hom hlau nplhaib gasket).
Kev ntsuas siab: Chav kawm 150/300/600/900/1500/2500 (tsim rau qhov kub thiab txias).
ASME B16.47 (Qhov Loj NPS 26-60 ", A / B Series).
Cov qauv flange hauv tsev: GB / T 9112-2010 (sib npaug rau B16.5), HG / T 20615 (American standard system).
3, Kev sib xyaw ua ke thiab cov cim npe
Kev sib xyaw ua ke: ASME B16.5+ASTM A182 F91+RTJ.
Piv txwv ntawm flange marking: WN 12 "Class 1500 RTJ A182 F91.
4, Cov ntawv thov tseem ceeb thiab qhov kub thiab txias
Siv tau qhov kub thiab txias: Tsawg dua los yog sib npaug li 620℃(rau thermal zog lub ntsiab chav, cov khoom siv hydrogenation, kub thiab siab siab pipelines).
Txwv tsis pub: Tsis kub siab creep tej yam kev mob (tus nqi siab), tov nrog carbon steel / ib txwm stainless hlau.
5, Cov qauv ntxiv (tsis yog-kev kuaj kev puas tsuaj / vuam)
Kev xeem: ASME SA-388 (forging UT), ASTM A609 (MT / PT).
Vuam: NB/T 47014 (kev ntsuam xyuas vuam), DL/T 695 (lub hwj chim chaw nres tsheb yeeb nkab fittings).
Tianjin Baode Steel Co., Ltd yog ib lub Hoobkas loj tshaj plaws nyob rau sab qaum teb ntawm Tuam Tshoj los tsim cov hlau alloy, stainless hlau thiab carbon steel yeeb nkab fittings.
