Taw qhia rau X11CrMo5-1 / 1.7361 Steel Boiler Pipe
Kev faib khoom siv
X11CrMo5-1 (EN 10027-2 npe) lossis1.7361(cov ntaub ntawv xov tooj) yogtsis yog carbon steel, tab sis aqis- alloy chromium-molybdenum steeltshwj xeeb tsim los rau siab -kub siv. Qhov no yog ibtseem ceeb sib txawvlos ntawm cov khoom sib tham yav dhau los xws li P355NH lossis 16Mo3, vim nws muaj cov ntsiab lus chromium ntau heev rau cov khoom txhim kho.
Kev faib tawm kom raug:
Tsawg-Alloy Creep-Resistant Thaum tshav kub kub-Resistant Steel (5% Chromium Group)
Cov yam ntxwv tseem ceeb thiab kev siv
Khoom Siv Lub Npe Txheej Txheem:
X: Qhia siab - alloy steel (tsis sib haum "carbon steel" kev faib tawm)
11: Kwv yees li . 1.1% chromium cov ntsiab lus (qhov tseeb 4.0-6.0% ntau)
Cr: Chromium alloying keeb
Mo: Molybdenum alloying element
5: Kwv yees li . 0.5% cov ntsiab lus molybdenum
1: Thawj variant nyob rau hauv no alloy pawg
Distinctive nta:
Txhim kho Oxidation Resistance: Chromium cov ntsiab lus muab kev tiv thaiv zoo rau chav oxidation thiab scaling
Siab Creep Strength: Khaws cov khoom siv kho tshuab ntawm qhov kub siab txog li 600 degree
Temper Embrittlement Resistance: Tsawg dua rau embrittlement piv rau siab dua chromium steels
Zoo Thermal Fatigue Resistance: Haum rau cov khoom uas muaj qhov kub thiab txias
Cov ntawv thov tseem ceeb:
Superheater thiab reheater rajnyob rau hauv siab -efficiency boilers
Chav kav dejnyob rau hauv cov pa thiab ua ke lub voj voog fais fab nroj tsuag
Thaum tshav kub kub exchanger tubeshauv petrochemical processing
Cracking furnace tubeshauv refineries
Siab - kub taub hauthiab manifolds
Cheebtsam hauv pov tseg- rau- cov nroj tsuag hluav taws xob
Hom Kev Pabcuam:
Qhov kub thiab txias: 500℃rau600 degree(siab dua 16Mo3)
Siab: Mus txog250bar ua
Kev Pabcuam Lub Neej: Tsim los rau100,000-200,000 teevntawm qhov ntsuas kub tsim
Technical Specifications
Table 1: Cov Khoom Siv Tshuaj Txhuam Hniav (EN 10216-2)
| Element | Standard Range (%) | Kev Ntsuas Tus Kheej (%) | Lub luag haujlwm ua haujlwm |
|---|---|---|---|
| Cov pa roj carbon (C) | 0.08 - 0.15 | 0.10 - 0.13 | Lub zog, tsim carbide |
| Silicon (Si) | 0.10 - 0.35 | 0.15 - 0.30 | Deoxidizer |
| Manganese (Mn) | 0.30 - 0.70 | 0.40 - 0.60 | Lub zog, tswj sulfide |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025 | Tsawg dua lossis sib npaug li 0.020 | Tswj impurity |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.015 | Tsawg dua lossis sib npaug li 0.010 | Tswj impurity |
| Chromium (Cr) | 4.00 - 6.00 | 4.80 - 5.20 | Oxidation kuj, creep zog |
| Molybdenum (hli) | 0.45 - 0.65 | 0.50 - 0.60 | Creep kuj, carbide stabilization |
| Nickel (Ni) | Tsawg dua lossis sib npaug li 0.30 | Tsawg dua lossis sib npaug li 0.25 | Cov khoom seem |
| Aluminium (Al) | Tsawg dua lossis sib npaug li 0.040 | Tsawg dua lossis sib npaug li 0.030 | Grain refinement |
| Niobium (Nb) | -- | -- | Tsis feem ntau ntxiv |
| Vanadium (V) | -- | -- | Tsis feem ntau ntxiv |
| Nitrogen (N) | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.020 | Tswj ntxiv |
Table 2: Chav Kub Kub Mechanical Properties
| Khoom | Txuj kev xav tau | Kev kuaj mob | Sau ntawv |
|---|---|---|---|
| Yield zog (Rp0.2) | Ntau dua lossis sib npaug li 280 MPa | Normalized + Tempered | Yam tsawg kawg nkaus |
| Tensile zog (Rm) | 450 - 600 MPa | Normalized + Tempered | Muaj ntau yam |
| Elongation (A) | Ntau dua lossis sib npaug li 20% | L₀=5.65√S₀ | Yam tsawg kawg nkaus |
| Impact Zog (KV) | Ntau dua lossis sib npaug rau 40 J (avg) | +20 degree | Charpy V-ntu |
| Hardness | 160 - 210 HB | Brinell | Yam ntau yam |
Table 3: Cov Cuab Yeej Cuab Yeej Ua Haujlwm Siab
| Kub (degree) | 450 | 500 | 525 | 550 | 575 | 600 | 625 |
|---|---|---|---|---|---|---|---|
| Tsawg Rp 0.2 (MPa) | 240 | 225 | 215 | 205 | 195 | 185 | 175 |
| Creep Strength Rₚ 1% | 130 | 100 | 85 | 70 | 55 | 45 | 35 |
| Creep Repture Strength | 180 | 140 | 120 | 100 | 80 | 65 | 50 |
| Tso cai Stress (MPa)* | 120 | 95 | 82 | 70 | 58 | 48 | 38 |
Tus nqi rau 100,000 teev kev pabcuam lub neej ntawm qhov kub thiab txias
Table 4: Sib piv nrog Cov Qib Siab Cov Qib Siab
| Parameter | X11CrMo5-1 | 16 hmo 3 | 13CrMo4-5 | 10CrMo9-10 | X20CrMoV11-1 |
|---|---|---|---|---|---|
| Khoom Naj Npawb | 1.7361 | 1.5415 | 1.7335 | 1.7380 | 1.4922 |
| Chromium Cov ntsiab lus | 5% | <0.3% | 1% | 2.25% | 11% |
| Tsawg-yield (MPa) | 280 | 280 | 310 | 280 | 490 |
| Max kub (degree) | 600 | 550 | 560 | 580 | 620 |
| Oxidation Resistance | Zoo heev | Ncaj ncees | Zoo | Zoo heev | Zoo heev |
| Creep Resistance | Zoo heev | Zoo | Zoo heev | Zoo heev | Superior |
| Weldability | Yuav tsum tau saib xyuas | Zoo | Yuav tsum tau saib xyuas | Nyuaj | nyuaj heev |
| Nqi Factor | 2.0 | 1.0 | 1.5 | 2.2 | 3.5 |
Kev tsim khoom thiab kev ua haujlwm
Txheej txheem ntau lawm:
ntawv nyeem
Hluav taws xob Arc Rauv → AOD / VOD Refining → Nruam Casting → Tube Ua (Seamless: Extrusion lossis Piercing; Welded tau tab sis tsis tshua muaj) → Normalizing (950-980 degree) + Tempering (730-780 degree) → Txias → Test → Kev tshuaj xyuas zaum kawg
Kev kho cua sov yuav tsum muaj:
normalizing: 950-980℃tom qab cua txias
Tempering: 730-780℃rau 2-4 teev
Tshaj tawm -Kev kho cua sov: Yuav tsum tau rau txhua thicknesses
Qhov kawg Microstructure: Tempered bainite / martensite
Critical Vuam Technology:
ntawv nyeem
Welding Challenges: • Cua- hardening tendency vim chromium content • Risk of cold cracking in HAZ • Formation hard martensite in weld zone • Temper embrittlement risk Welding Processes: • SMAW with special low low -hydrogen electrodes • GTAW for root passes (nyiam dua GMAW) •/Saw Hydrogen Risk Tseem Ceeb Cov txheej txheem: 1. Preheat: 200-250℃(tsawg kawg) 2. Interpass kub: 250-300℃3. Kev kho cua sov tom qab vuam: • Kub: 730-780℃• Lub sij hawm: 2-4 teev (tsawg kawg 1 teev ib 25mm) • Txias tus nqi: 40℃sib npaug rau 1hour tsawg dua 4. Hydrogen tswj:<3 ml/100g deposited metal Filler Materials: • EN ISO 18276: S CrMo 5 (matching composition) • EN ISO 16834-A: G 42 6 M G3Si1 • Often undermatching compositions used to improve weld toughness
Kev txiav txim siab tsim
Qhov zoo ntawm X11CrMo5-1:
Superior Temperature Capability: 50℃siab dua 16Mo3
Zoo heev Oxidation Resistance: Cov ntsiab lus Chromium tiv thaiv kev ntsuas ntau dhau
Zoo Creep Ductility: Zoo dua li cov hlau chromium siab dua
Cov ntaub ntawv pov thawj: Kev siv dav hauv European fais fab kev lag luam
Cov khoom sib npaug: Zoo ua ke ntawm lub zog, ductility, thiab weldability rau nws cov chav kawm
Kev txwv thiab ceev faj:
Vuam Complexity: Yuav tsum muaj kev paub txog vuam thiab cov txheej txheem nruj
PWHT yuav tsum: Tsis tuaj yeem zam hauv daim ntawv thov teb
Notch Sensitivity: Nruab nrab rhiab heev ntawm qhov kub siab
Graphitization Risk: Muaj peev xwm nyob rau hauv tej qhov kub thiab txias nyob rau lub sij hawm ntev
Muaj tsawg kawg nkaus: Tsawg dua li cov qib txheem xws li 16Mo3
Design Parameters:
Tsim CodesEN 12952, EN 13480, ASME Tshooj I
Yam Kev Nyab Xeeb: 1.5 ntawm creep rupture ntawm 100,000 teev
Corrosion AllowanceLoj: 0-2mm (nyob ntawm ib puag ncig)
Yam tsawg kawg nkaus tsim kub: 0℃(qis dua nrog kev ntsuam xyuas)
Kev xav txog kev qaug zog: Tseem ceeb rau kev pabcuam cyclic
Cov yam ntxwv ntawm Microstructural
Theem Transformation Behavior:
Austenitizing kubKub: 950-1000 degree
Critical Cooling Rate: Nruab nrab siab vim 5% Cr
Cov khoom hloov pauv: Bainite thiab martensite
Tempering Teb: Secondary hardening ncov nyob ib ncig ntawm 550 degree
Ntev -Lub Sij Hawm Microstructural Stability:
Carbide nag lossis daus: M₂₃C₆, M₇C₃, thiab Mo₂C tsim
Carbide Coarsening: Kev loj hlob zuj zus thaum lub sijhawm ua haujlwm
Laves Phase Formation: Muaj peev xwm ua tau tom qab ncua ntev
Cov txheej txheem rov qab: Txo cov dislocation ceev
Quality Assurance thiab Standards
Certification Requirements:
EN 10204 3.1 lossis 3.2 daim ntawv pov thawj
Ua kom tiav traceability nrog rau kev siv melting
Kev tshuaj xyuas tag nrho nrog kev txheeb xyuas ntawm Cr, Mo cov ntsiab lus
Mechanical tests nyob rau hauv chav tsev thiab siab kub
Tsis yog -kev kuaj kev puas tsuaj (UT, RT, ET, PT)
Kev tshawb nrhiav hardness hla ntu
Daim ntawv qhia txog microstructure thiab grain loj
Cov qauv siv tau:
Cov Qauv KhoomEN 10216-2 (seamless), EN 10217-2 (welded)
Khoom TxheemTS EN 10028-2
Cov qauv xeemDaim ntawv pov thawj: EN ISO 6892-1, EN ISO 148-1
Vuam StandardsTS EN ISO 15614-1 Cov kev cai tshwj xeeb PWHT
Kev soj ntsuam StandardsTS EN 10246 Series
Kev Ntsuas Tshwj Xeeb (Cov Ntawv Thov Tseem Ceeb):
Creep thiab Repture Test: Rau tsim validation
Kev Ntsuam Xyuas Kev Nyuaj Siab: Rau kev siv bolting
Thermal Fatigue Testing: Rau cov khoom siv cyclic
Microstructural Analysis: TEM / SEM rau carbide characterization
Kev Xeem Hardenability: Jominy los yog cov kev xeem zoo sib xws
Kev Pabcuam Kev Ua Haujlwm thiab Kev Txhim Kho
Degradation Mechanisms:
Kev puas tsuaj: Lub neej tseem ceeb -txoj kev txwv
Oxidation: Sab hauv (sab-sab) thiab sab nraud
Microstructural degradation: Carbide coarsening, theem hloov
Thermal Fatigue: Hauv cov khoom siv cyclically ua haujlwm
Graphitization: Hauv qhov kub thiab txias (tsis tshua muaj)
Kev tshuaj xyuas thiab saib xyuas:
Regular NDT: Ultrasonic kuaj rau creep voids
Replication Microscopy: Rau kev ntsuam xyuas microstructural
Kev soj ntsuam Hardness: Txhawm rau txheeb xyuas qhov muag muag
Dimensional Checks: Creep strain ntsuas
Kev soj ntsuam saum npoo: Rau oxidation thiab scaling
Txoj Kev Ntsuas Lub Neej Tseem Ceeb:
Larson{0}}Miller Parameter: Raws li qhov kub thiab txias -lub sijhawm keeb kwm
Kev Ntsuas Kev Ntsuas Kev Ntsuas: Kev saib xyuas ncaj qha
Kev ntsuam xyuas Microstructural: Quantitative metallography
Hardness -Qhov kub thiab txias: Indirect method
Qauv tshem tawm thiab kuaj: Txoj kev tseeb tshaj plaws
Cov txheej txheem xaiv
Thaum X11CrMo5-1 tsim nyog:
Kev xav tau kubKev khiav hauj lwm ntau: 550-600 degree
Oxidation Kev txhawj xeeb: Ib puag ncig qhov twg scaling yog teeb meem
Cov qauv tsim pov thawj: Cov cog lus tshwj xeeb lossis hloov pauv
European Projects: Qhov twg cov khoom no feem ntau tau teev tseg
Cov kev xav tau sib npaug: Xav tau kev weldability zoo nrog kev ua haujlwm siab kub
Thaum twg los xav txog lwm txoj kev:
Hauv qab 550 degree: 16Mo3 los yog 13CrMo4-5 tej zaum yuav siv nyiaj ntau dua
Tshaj 600 degree: Xav txog 9-12% chromium steels
Cyclic Service heev: Tej zaum yuav xav tau cov khoom siv sib txawv
Limited Fabrication Facilities: Yog tias tsim nyog PWHT tsis tuaj yeem paub tseeb
ASME Code Projects: Tej zaum yuav xav tau qhov sib npaug ASTM specification (A335 P5)
Sib npaug Specifications:
| Txuj | Qib sib npaug | Sau ntawv |
|---|---|---|
| ASTM | A335 P5 | Zoo sib xws tab sis tsis zoo tib yam muaj pes tsawg leeg |
| DIN | 12 ZPO 195 | Cov npe qub German |
| ISO | 11CrMo5-1 | Zoo sib xws specification |
| ASME | SA335 P5 | Tshooj I thiab VIII tau txais |
Kev siv niaj hnub thiab kev txhim kho
Kev siv tam sim no:
Retrofit Projects: Hloov cov khoom qub hauv cov nroj tsuag uas twb muaj lawm
Cov nroj tsuag biomass: Haum rau qee yam biomass - raug rho tawm haujlwm boiler
Pov tseg-rau-Zoo: Daim ntawv thov txwv nyob rau thaj chaw kub tshwj xeeb
Ua ke voj voog: Cov khoom siv hluav taws xob cua sov rov qab ua kom sov
Kev tsim khoom siv:
Txhim kho Variants: Txhim kho purity versions rau cov khoom zoo dua
Vuam Innovations: Tshiab muab tub lim hlau thiab cov txheej txheem
Lub neej Extension: Kev nkag siab zoo dua ntawm cov txheej txheem degradation
Digital Twins: Kev koom ua ke nrog kev saib xyuas cov txheej txheem rau kev kwv yees txij nkawm
Kev xav txog nyiaj txiag
Cov Nqi Them Nqi:
Tus nqi khoom siv: 2-3 × kim dua carbon steels
Tus nqi tsim khoom: Siab dua vim kev siv vuam thiab kev kho cua sov
Tus nqi Lifecycle: Feem ntau zoo siab vim lub neej ua haujlwm ntev
Cov teeb meem muaj: tuaj yeem cuam tshuam rau lub sijhawm ua haujlwm
Tag Nrho Cov Nqi Ntawm Cov Tswv Cuab Kev Ntsuam Xyuas:
ntawv nyeem
Tus nqi pib: Tus nqi siab rau kev teeb tsa: Tus nqi tu siab: Tus nqi hloov pauv nruab nrab: Lub neej ua haujlwm siab: Ntev ({0}} xyoo) Kev Lag Luam Tag Nrho: Zoo rau cov ntawv thov tsim
Cov ntsiab lus:X11CrMo5-1 sawv cev rau ib qhocov khoom tseem ceeb nruab nrabnyob rau hauv cov creep-cov tsev neeg hlau resistant, txuas qhov sib txawv ntawm qis- alloy steels xws li 16Mo3 thiab siab -chromium steels xws li X20CrMoV11-1. Nws5% chromium cov ntsiab lus muab kev sib xyaw ua kentawm oxidation kuj thiab creep zog, ua rau nws haum rauxav tau siab -kub sivqhov twg carbon steels tsis txaus tab sis siab dua alloys yog tsis tsim nyog los yog uneconomical. Kev nkag siab zoo ntawm nwswelding xav tau thiab kev kho cua sov xav tauNws yog ib qho tseem ceeb rau kev ua tiav daim ntawv thov hauv boiler thiab siab hlab ntsha kev tsim kho.
