Hauv thaj chaw ntawm cov khoom siv kav dej kev lag luam, tus qauv AsmeskasASME SA335/ASTM A335 P9Cov yeeb nkab hlau tsis sib xyaw ua ke nyob hauv txoj haujlwm tseem ceeb vim lawv cov yam ntxwv tshwj xeeb. Muaj ntau tus neeg xav tsis thoob: P9 ua los ntawm cov khoom siv dab tsi? Qib twg hauv tus qauv hauv tebchaws yog P9 zoo ib yam li? P9 sib raug rau cov khoom siv dab tsi hauv tus qauv hauv tebchaws? Cov hauv qab no yog cov lus teb ntxaws ntxaws rau koj.

I. Cov yam ntxwv thiab cov teb thov ntawm P9 khoom siv
Tus qauv Asmeskas ASME SA335/ASTM A335 P9 yog cov yeeb nkab ferritic alloy seamless steel rau cov xwm txheej ua haujlwm kub siab. Nws lub hom phiaj tseem ceeb yog los pabcuam cov boilers kub siab, siab siab thiab ultra-siab siab, thiab nws yog siv dav hauv kev tsim cov khoom tseem ceeb xws li cov raj superheater, cov raj reheater, cov raj roj qhia thiab cov raj pa loj. Hauv kev lag luam petrochemical, kev tsim cov boilers kub siab, superheaters, cov khoom hloov pauv cua sov thiab cov yeeb nkab fittings kuj tsis tuaj yeem ua yam tsis muaj P9 cov raj kub siab alloy. Nws tuaj yeem tswj cov khoom siv lub cev thiab tshuaj lom neeg ruaj khov hauv qhov chaw kub siab, ua kom ntseeg tau tias kev ua haujlwm zoo thiab muaj txiaj ntsig ntawm cov khoom siv cuam tshuam.
II. Kev sib piv ntawm P9 nrog cov qib txheem hauv tebchaws
Cov khoom siv ntawm tus qauv AsmeskasASTM A335 P9Cov yeeb nkab hlau tsis sib xyaw ua ke yog sib npaug rau qib 12Cr9Mo ntawm tus qauv Suav GB / T 5310. Thaum piv los ntawm ntau yam xws li cov tshuaj lom neeg sib xyaw, cov khoom siv kho tshuab thiab cov xwm txheej xa khoom, ob qho tib si muaj qhov zoo sib xws heev thiab tuaj yeem siv sib pauv tau. Hauv kev tsim khoom lag luam tiag tiag, kev nkag siab txog kev sib raug zoo no tuaj yeem pab cov tuam txhab muaj kev ywj pheej ntau dua hauv kev xaiv cov khoom siv thiab ua tau raws li cov kev xav tau ntawm cov haujlwm raws li cov qauv sib txawv.

Iii. Kev Tshawb Fawb Txog Cov Qauv Kev Siv
Cov qauv kev siv ntawm P9 superalloy steel kav dej yog ASME SA335 / SA335M thiab ASTM A335 / A335M, thiab nws zoo ib yam li cov qauv hauv tebchaws.GB/T 9948, GB/T 5310thiab tus qauv AsmeskasASTM A213Ua raws li cov qauv no hauv kev tsim khoom kom ntseeg tau tias qhov ruaj khov thiab kev ntseeg tau ntawm qhov zoo ntawm P9 alloy seamless steel yeeb nkab, ua rau lawv ua tau raws li qhov yuav tsum tau ua thiab siv tau yooj yim hauv ntau yam haujlwm lag luam thoob ntiaj teb.

Iv. Kev Tshaj Tawm Txog Cov Tshuaj Lom Zem
Cov qauv Asmeskas ASTM A335 P9 alloy seamless steel kav dej muaj cov qauv tshuaj lom neeg nruj:

C: ≤0.15. Kev tswj hwm qhov tseeb ntawm cov pa roj carbon yog qhov tseem ceeb heev rau qhov sib npaug ntawm lub zog thiab qhov tawv ntawm cov hlau.
Silicon: 0.25 ~ 1.00. Cov silicon element pab txhim kho lub zog thiab qhov tawv ntawm cov hlau.
Mn: 0.30-0.60. Manganese ua lub luag haujlwm tseem ceeb hauv kev txhim kho lub zog thiab kev tawv ntawm cov hlau.
P≤0.025. Kev tswj hwm cov ntsiab lus phosphorus kom nruj tuaj yeem ua kom cov hlau ua haujlwm ruaj khov.
S≤0.025. Cov ntsiab lus sulfur tsim nyog tuaj yeem txo qhov kub brittleness ntawm hlau.
Cr: 8.00-10.00. Chromium ua rau cov hlau tsis kam tiv taus corrosion thiab oxidation zoo dua.
Mo: 0.90-1.10. Molybdenum ntxiv ua rau lub zog, qhov tawv thiab lub zog thermal ntawm cov hlau zoo dua.
Cov ntsiab lus no ua haujlwm ua ke los muab P9 alloy seamless steel yeeb nkab nrog kev ua tau zoo heev.

V. Kev Qhia Txog Cov Khoom Siv Kho Tshuab
Cov khoom siv kho tshuab ntawm P9 alloy seamless steel kav dej kuj zoo heev:

Lub zog tensile yog ≥415Mpa, kom ntseeg tau tias nws tsis yooj yim tawg thaum raug lub zog tensile.
Lub zog tso zis yog ≥205Mpa, qhia txog kev muaj peev xwm tiv thaiv kev hloov pauv zoo heev.
Tus nqi elongation ntawm ≥22% qhia tau hais tias cov khoom muaj qee yam khoom ductility.
Cov khoom siv kho tshuab no ua rau nws ua haujlwm ruaj khov nyob rau hauv ntau yam kev ua haujlwm nyuaj. Tom qab ntawd, A335 P9 high-pressure alloy seamless steel yeeb nkab nrog cov khoom siv kho tshuab zoo heev li cas? Nyem rau ntawm qhov txuas video: A335 P9 alloy seamless steel yeeb nkab tsim thiab cov txheej txheem tsim khoom, kom paub txog tag nrho cov txheej txheem suav nrog kev tsim khoom thiab kev kho cua sov.

Vi. Xwm txheej xa khoom thiab qhov loj me ntawm cov khoom
Cov xwm txheej xa khoom: Feem ntau yog annealed tag nrho lossis isothermal annealed, normalized + tempered. Cov kev kho mob xa khoom no tuaj yeem ua kom ntseeg tau tias cov yeeb nkab hlau muaj kev ua tau zoo thaum lub sijhawm xa khoom, ua tau raws li cov kev cai ua tiav thiab kev siv tom qab.
Cov Lus Qhia thiab qhov loj: Npog ntau yam ntawm 60.3-765 * 2-120. Cov lus qhia dav dav suav nrog 60.3, 73, 88.9, 114.3, 168.3, 219.1, 273.1, 323.9, 355.6, 406.4, 457.2, 508, 559, 610, 660, 711, thiab 762. Tau kawg, lwm qhov ntau thiab tsawg kuj tuaj yeem hloov kho raws li cov kev xav tau tshwj xeeb ntawm cov neeg siv khoom kom tau raws li ntau yam kev xav tau ntawm qhov project.
Txawm hais tias nws yog rau cov neeg tshiab hauv kev lag luam kom nkag siab txog kev paub txog cov ntaub ntawv lossis rau cov kws tshaj lij los xaiv cov ntaub ntawv rau cov haujlwm, kev nkag siab txog American standard ASME SA335 / ASTM A335 P9 alloy seamless steel pipes yog qhov tseem ceeb heev, uas tuaj yeem pab txhawb kev vam meej ntawm ntau yam haujlwm kev lag luam.