Khoom nta
Zoo heev - qhov kub thiab txias tsis kam (cov ntsiab lus zoo)
Lub ntsiab kom zoo dua ntawm ASTM A335 P22 nyob rau hauv nws zoo heev - kub lub zog thiab creep kuj. Ua tsaug rau qhov sib ntxiv ntawm 1% molybdenum (Mo) (kwv yees li ob npaug ntawm cov ntsiab lus ntawm P11), P22 nthuav tawm qhov ua tau zoo dua siab dua - kub creep rupture zog piv rau P11 thiab cov pa roj carbon zoo tib yam hauv qhov kub ntawm 500-580℃. Nyob rau hauv cov xwm txheej ntawm 565 degree, qhov tso cai rau kev ntxhov siab ntawm P22 yog li 1.2-1.4 npaug ntawm P11, ua kom nws tiv taus cov yas deformation qeeb (ntub) ntawm cov ntaub ntawv nyob rau hauv qhov kub thiab txias, ua kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov kav dej hauv lub sijhawm ntev - kev pabcuam kub kub. Nws lub zog tensile yam tsawg kawg nkaus yog 415 MPa thiab qhov tsawg kawg nkaus tawm lub zog yog 205 MPa, uas yog cov qauv kev ua tau zoo nyob rau hauv A335 series. Txawm li cas los xij, nws muaj qhov txiaj ntsig zoo nyob rau hauv cov nqe lus ntawm qhov kub thiab txias zog thiab creep kuj.
Zoo antioxidant zog thiab corrosion kuj
2.25% chromium cov ntsiab lus nyob rau hauv ASTM A335 P22 muab superior siab -kub oxidation kuj piv rau P11. Nyob rau hauv siab - qhov kub thiab txias ib puag ncig thiab leej faj- muaj cov xov xwm, P22 tuaj yeem tsim cov txheej txheem Cr₂O₃ oxide ruaj khov, tiv taus siab - kub oxidation thiab thermal corrosion nrog rau qhov kub thiab txias txwv rau oxidation tsis kam ntawm 565-580℃11). Nyob rau hauv lub refinery siab -kub sulfur{17}} muaj cov xov xwm thiab hydrotreating chav tsev ib puag ncig, P22 nthuav tawm zoo corrosion kuj zoo dua li P11, zoo tiv taus high-temperature sulfidation corrosion thiab hydrogen corrosion.
Zoo machinability thiab formability
ASTM A335 P22 nthuav tawm cov khoom txias thiab kub ua haujlwm zoo, tso cai rau ntau yam txheej txheem xws li kub dabtsi yog khoov, txias dabtsi yog khoov, thiab forging. Nws cov ntsiab lus me ntsis alloy muab kev tsim tau zoo thaum lub caij txias txias, ua rau nws tsim nyog rau kev tsim cov yeeb nkab fittings xws li lub luj tshib, tees, thiab reducers. Nws yuav tsum raug sau tseg tias vim nws cov ntsiab lus chromium thiab molybdenum siab dua, P22 muaj qhov siab dua me ntsis rau kev ua hauj lwm hardening piv rau P11. Yog li ntawd, nws raug pom zoo kom suav nrog qhov tsim nyog nruab nrab annealing cov kauj ruam thaum tsim cov txheej txheem. Nws machinability yog piv rau cov P11, thiab cov pa machining txoj kev yuav siv tau rau kev ua.
Kev ua tau zoo vuam zoo thiab nruj tom qab- vuam cov cua sov yuav tsum tau ua
ASTM A335 P22 muaj cov vuam zoo. Txawm li cas los xij, vim nws cov ntsiab lus chromium thiab molybdenum siab dua (2.25% Cr-1% Mo), nws txoj kev nyiam ua kom tawv nqaij hauv tshav kub- thaj chaw cuam tshuam (HAZ) ntau dua li ntawm P11, uas ua rau muaj kev txwv nruj rau cov txheej txheem vuam thiab tom qab-weld heat treatment (PWHT). Nws raug pom zoo tias qhov kub thiab txias ua ntej vuam yog 200-300 degree. Tom qab vuam, PWHT yuav tsum tau ua los ntawm cua sov mus rau 690-760 degree, tuav ntawm qhov kub thiab txias, thiab tom qab ntawd maj mam txias kom tshem tawm cov kev ntxhov siab uas seem, ua rau thaj chaw muaj kev kub ntxhov, thiab ua kom lub zog thiab tawg tsis kam ntawm qhov sib koom ua ke.
Lub koom haum muaj kev ruaj ntseg zoo thiab ntev - kev cia siab rau kev pabcuam
ASTM A335 P22 qhia txog kev ruaj ntseg zoo thaum nyob ntev - kev pabcuam ntawm qhov kub thiab txias tsawg dua lossis sib npaug li 580℃. Nws 2.25% Cr-1% Mo muaj pes tsawg leeg tsim tau zoo txhim kho cov khoom siv siab -kub creep zog thiab oxidation tsis kam, thaum inhibiting spheroidization ntawm pearlite thiab kev loj hlob thiab agglomeration ntawm carbides, kom ntseeg tau tias tus nqi qis ntawm cov cuab yeej degradation thaum lub sij hawm ntev -} kev pab cuam siab {{14}. Tom qab normalizing thiab tempering (N + T) kev kho cua sov, P22 tau txais ib qho zoo thiab zoo ferrite + pearlite microstructure, lav lub koom haum kev ruaj ntseg thiab kev ntseeg siab nyob rau hauv high-temperature kev pab cuam.
Technical Specifications
Tshuaj muaj pes tsawg leeg (ASTM A335 / ASME SA335)
|
Lub ntsiab |
Cov kev cai txheem |
Nco tseg |
|
C |
0.05 - 0.15% |
Tsawg- carbon tsim kom ntseeg tau tias weldability thiab toughness |
|
Mn |
0.30 - 0.60% |
Kev daws teeb meem ntxiv dag zog, txhim kho lub zog |
|
P |
Tsawg dua lossis sib npaug li 0.025% |
Cov khoom tsis zoo, tswj nruj heev |
|
S |
Tsawg dua lossis sib npaug li 0.025% |
Cov khoom tsis zoo, tswj nruj heev |
|
Si |
Tsawg dua lossis sib npaug li 0.50% |
Deoxidizer, txhim kho siab -kub oxidation kuj |
|
Cr |
2.00 - 2.50% |
Cov ntsiab lus tseem ceeb uas muab qhov zoo tshaj plaws siab -kub oxidation kuj thiab corrosion kuj |
|
Mo |
0.87 - 1.13% |
Cov ntsiab lus tseem ceeb los txhim kho siab -kub creep tawg lub zog (nrog rau cov ntsiab lus kwv yees li ob npaug ntawm P11) |
|
Fe |
Cov khoom seem (≈ 96%) |
Matrix element |
Lub cev muaj zog
|
Kev ua tau zoo |
Tus lej Tus Nqi / Ntau |
Cov xwm txheej kuaj |
|
Qhov ntom |
7.85 g / cm³ |
Chav ntsuas kub (20 degree) |
|
Melting Point |
≈ 1380-1430 degree |
- |
|
Hluav taws xob tsis kam |
≈ 0.34 μΩ·m |
Chav ntsuas kub |
|
Thermal conductivity |
≈ 38 W/(m·K) |
Chav ntsuas kub |
|
Coefficient ntawm Thermal Expansion (20-100 degree) |
≈ 11.6 × 10⁻⁶ /K |
- |
|
Elastic Modulus (Young's Modulus) |
Qhov siab tshaj plaws ntawm qhov siab ntawm 200 GPa |
Chav ntsuas kub |
|
Poisson tus ratio |
≈ 0.28 |
Chav ntsuas kub |
|
Magnetism |
Ferromagnetic |
Ferrite qauv, uas yog hlau nplaum |
Mechanical Properties (Normalized + Tempered, Tus nqi zoo, ASTM A335)
|
Kev ua tau zoo |
Yam nqi |
Cov qauv kev coj ua |
|
Tensile zog |
Ntau dua lossis sib npaug li 415 MPa |
ASTM A335 Cov Lus Qhia Tshwj Xeeb |
|
Yield zog (0.2% Offset) |
Ntau dua lossis sib npaug li 205 MPa |
ASTM A335 Cov Lus Qhia Tshwj Xeeb |
|
Elongation (gauge ntev 2in / 50mm) |
Ntau dua lossis sib npaug li 30% |
ASTM A335 Cov Lus Qhia Tshwj Xeeb |
|
Hardness |
Tsawg dua lossis sib npaug rau 217 HB (tus nqi raug) |
- |
Note: The strength level of P22 is the same as that of P11 (≥415 MPa). However, its core advantage lies in the excellent high-temperature strength and oxidation resistance provided by 2.25%Cr-1%Mo, rather than an increase in strength. For higher temperature grades (>580 degree), pom zoo kom siv P91.
High -kev ua haujlwm kub
ASTM A335 P22 tuav lub zog zoo ntawm qhov kub thiab txias thiab haum rau ntev - lub sij hawm siab - kub qhov kev pab cuam mus txog 565℃:
|
Kub |
Tensile zog (MPa, kwv yees) |
Kev tuav pov hwm tus nqi |
|
Chav tsev kub (20 degree) |
Ntau dua lossis sib npaug rau 415 |
100% |
|
400 degree |
≈ 390 |
Ntau dua lossis sib npaug li 94% |
|
500 degree |
≈ 360 |
Ntau dua lossis sib npaug li 87% |
|
550 degree |
≈ 310 |
Ntau dua lossis sib npaug li 75% |
Ntev -Lub sij hawm Thermal Stability thiab Microstructural Stability:
ASTM A335 P22 pom zoo microstructural stability thaum lub sij hawm ntev - kev pab cuam ntawm kub tsawg dua los yog sib npaug rau 565℃. Qhov sib ntxiv ntawm 2.25% Cr-1% Mo zoo txhim kho siab - kub lub zog thiab oxidation tsis kam. Txawm li cas los xij, microstructural stability txo thiab creep zog poob qis thaum siv ntev-lub sij hawm siab tshaj 580℃; Yog li, nws tsis pom zoo rau kev pabcuam ntev tshaj 580 degree. Rau qib siab dua, P91 raug pom zoo.
Kev kho cua sov
Qhov kev ua tau zoo kawg ntawm ASTM A335 P22 yog nyob ntawm kev kho cua sov, nrog rau cov lus qhia tshwj xeeb hauv qab no:
1. Kev Kho Mob (Normalizing)
Tshav kub rau 900-960 degree, tuav lub sijhawm txaus (kwv yees li 1 teev ib nti ntawm phab ntsa tuab), ces cua txias. Qhov no ua rau muaj qhov sib xws thiab nplua ferrite + pearlite microstructure, npaj rau tom ntej tempering.
2. Tempering kho(Tempering)
Kub rau 690-760 degree, tuav lub sijhawm txaus, ces cua txias. Qhov no tshem tawm kev ntxhov siab vim los ntawm normalizing, optimizes toughness thiab ductility, thiab ua tiav cov kev pab cuam zaum kawg.
3. Tag Nrho Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas
Tshav kub rau 840-890 degree, tuav, tom qab ntawd rauv txias kom txog li 650 degree, tom qab ntawd cua txias rau chav tsev kub. Siv los tshem tawm kev ntxhov siab ua haujlwm txias lossis txhim kho kev ua haujlwm txias.
Ceeb Toom: Post-weld heat treatment (PWHT) yuav tsum tau ua tom qab vuam. Nws suav nrog cua sov rau690-760 degree , tuav ntawm qhov kub thiab txias, thiab tom qab ntawd maj mam txias kom tshem tawm cov kev ntxhov siab ntawm cov welding residual thiab soften lub tshav kub - thaj tsam cuam tshuam.
Vim nws cov ntsiab lus chromium thiab molybdenum siab dua, P22 muaj kev nyiam ntau dua rau kev ua kom tawv tawv hauv cov vuam kub- thaj tsam cuam tshuam piv rau P11. Nws raug nquahu kom tswj xyuas cov khoom siv hluav taws xob thiab cov cua sov ua ntej (200-300 degree).
Kev kho cua sov kub thiab lub sij hawm yuav tsum tau tswj nruj me ntsis kom tsis txhob muaj cov nplej coarsening lossis kev ua haujlwm hloov pauv.
Siv tau Media
Siab - qhov kub thiab txias
Cov kav dej loj loj (tsawg dua lossis sib npaug li 550 degree) ntawm cov chaw tsim hluav taws xob, lub taub hau boiler, cov raj superheater, thiab cov raj reheater
Petroleum refining media
High -kub thiab siab - cov txheej txheem siab cov kav dej rau huab cua thiab lub tshuab nqus tsev distillation, catalytic cracking, hydrotreating, hydrocracking, thiab lwm yam.
Siab - cov txheej txheem roj
High -kub thiab siab - cov kav dej siab rau cov khoom siv tshuaj xws li ammonia synthesis, methanol, thiab tshuaj chiv.
Dej kub
Thaum tshav kub kub network, cua sov system.
Thaum tshav kub kub hloov roj thiab thermal nqa
Cov kav dej rau cov tshuab hluav taws xob hloov hluav taws xob
Lus Cim: ASTM A335 P22 tsis haum rau cov xov xwm corrosive xws li muaj zog oxidizing acids thiab siab - kub, siab -concentration chlorides. Nws lub siab oxidation kub txwv yog kwv yees li 565-580 degree; P91 raug pom zoo saum toj no qhov kub thiab txias. Nyob rau hauv siab - kub, siab - qhov chaw siab hydrogen-muaj ib puag ncig (xws li hydrotreating units), kev pheej hmoo ntawm hydrogen corrosion yuav tsum raug soj ntsuam. P22 yog ib qho ntawm cov khoom siv feem ntau los tiv thaiv hydrogen corrosion.
ASTM A335 P22 yog qhov tsim nyog rau siab - kub thiab siab - qhov siab ntawm 500 txog 565℃. Nws yog ib qho ntawm cov khoom nyiam tshaj plaws rau cov chaw tsim hluav taws xob supercritical thiab roj refining hydrotreating units, thiab pom zoo siv rau hauv cov chaw hauv qab no:
Daim ntawv thov teb
-
Fossil Roj Hmab Generation (Core Application)
● Main Steam Piping rau Supercritical / Subcritical Power Plants (tsawg dua lossis sib npaug li 565 degree)
● Boiler nruas, superheater nruas
● High-kub cov kav xa dej, cov kav dej
● Boiler cua sov nto raj system -
Petrochemical Engineering (Core Applications)
● High-kub thiab siab- cov kav dej siab rau hydrotreating/hydrocracking units hauv refineries
● Catalytic Reforming Unit Txheej Txheej Piping
● Atmospheric thiab Vacuum Distillation Unit Siab -Tub Piping
● Ncua sijhawm Coking Unit Txheej Txheej Piping -
Kev lag luam tshuaj thiab Fertilizer
● High-kub txheej txheem kav rau cov nroj tsuag ammonia synthesis
● Methanol Plant Conversion Gas Pipeline
● High-kub thiab siab- cov kav dej siab hauv cov nroj tsuag tshuaj chiv -
Combined tshav kub thiab lub zog thiab Central cua sov
● Siab-kub qhov hluav taws xob ntawm lub tshuab hluav taws xob thermal
● Hauv nroog centralized cua sov siab -kub dej kub kav -
Siab - kub thiab siab - cov yeeb nkab fittings
● High-lub luj tshib, tees, thiab reducers
● Forged yeeb nkab fittings, flanges
Kev xa khoom thiab Customization
Peb muab cov kev daws teeb meem hloov tau yooj yim thiab txhim khu kev qha kom ntseeg tau tias koj tau txais ASTM A335 P22 alloy steel kav uas zoo kawg nkaus phim koj qhov kev xav tau.
Customizable cov ntaub ntawv
Peb txhawb tsim ntau yam yooj yim thiab tshwj xeeb cov duab raws li drawings los yog specifications.
|
Daim ntawv |
 Seamless Steel Yeeb Nkab
|
 Loj -inch Thick{1}}walled Yeeb Nkab
|
 Alloy Steel Yeeb Nkab
|
|---|---|---|---|
|
Pauv ntau yam |
Sab nraud txoj kab uas hla: 10.3 - 1067 hli; Phab ntsa Thickness: 1 - 150 hli |
Sab nraud txoj kab uas hla: 219 - 1067 hli; Phab ntsa Thickness: 20 - 150 hli |
Sab nraud txoj kab uas hla: 10.3 - 610 hli; Phab ntsa Thickness: 1 - 50 hli |
|
Customization Muaj peev xwm |
Kub- dov / txias- kos seamless raj, tsau -ntev txiav, bevel machining, yeeb nkab kawg threads, tshwj xeeb kub kho tej yam kev mob (normalizing + tempering / annealing) |
Kub nthuav dav, ruaj -ntev txiav, bevel machining, tshwj xeeb kub kho tej yam kev mob |
Txias- kos cov raj precision, ruaj -ntev txiav, tshwj xeeb nto kho |
Vim li cas thiaj xaiv peb? - Txhim khu kev qha Engineering Technology. Dependable xa khoom.
Peb tsis yog ib tus neeg muag khoom xwb, tab sis yog ib tus neeg koom tes nrog cov ntaub ntawv ntseeg siab rau koj hauv Suav teb.
Vertically Integrated Production
Muaj 20,000㎡ qhov chaw nrog 10+ automated kab (8, 000+ tons / xyoo). Hauv - tsev cuab yeej & qhov chaw tuag ua rau muaj kev hloov kho sai thiab tswj tus nqi zoo - tsis muaj tus neeg nruab nrab kos npe.
Kev Tswjhwm nruj nruj ntawm txhua theem
Tag nrho traceability nyob rau hauv lub tseem ceeb QC checkpoints thoob plaws hauv ntau lawm . 100% raws li ASTM/ASME, EN, thiab GB qauv. Cov ntaub ntawv xeem cov ntaub ntawv muaj nyob nrog txhua qhov khoom xa tuaj.
Txhim khu kev xa khoom & Export ntim
10+ xyoo xa tawm mus rau Tebchaws Europe, North America, Southeast Asia & Middle East nrog cov dej tsis zoo thiab tiv thaiv- xeb, ua ke nrog cov kev xaiv thauj khoom yooj yim kom muaj kev nyab xeeb thiab nyob rau - lub sijhawm tuaj txog.
Qauv validation ua ntej pawg ntau lawm
Peb muab cov qauv dawb rau kev kuaj xyuas zoo, tso cai rau koj tso cov xaj xaj tsuas yog tom qab kev pom zoo. Peb xyuas kom meej qhov sib xws los ntawm cov qauv mus rau cov khoom loj los ntawm qhov ntsuas qhov tseeb thiab kev tsim pob tshab.
FAQ
Q: Dab tsi yog qhov zoo ntawm ASTM A335 P22?
Q: Qhov txawv ntawm STM A335 P22 thiab P11 yog dab tsi? Yuav ua li cas xaiv ntawm lawv?
Q: Qhov txawv ntawm ASTM A335 P22 thiab P91 yog dab tsi? Yuav ua li cas xaiv ntawm lawv?
Q: Qhov kev pabcuam siab tshaj plaws rau ASTM A335 P22 yog dab tsi?
Q: Qhov kev ua tau zoo ntawm ASTM A335 P22 yog dab tsi?
Q: Dab tsi yog qhov corrosion kuj ntawm ASTM A335 P22?
Cim npe nrov: astm a335 p22, Tuam Tshoj astm a335 p22 manufacturers, lwm tus neeg, Hoobkas
