Txheej txheem cej luam
10CrMo5-5 yog qib qis- alloy steel tshwj xeeb tsim los rau kev pabcuam kub. Lub npe ua raws li tus qauv EuropeanTS EN 10216-2, uas npog seamless steel raj rau lub hom phiaj siab.
Lub alphanumeric code tawg raws li hauv qab no:
10: Kwv yees cov ntsiab lus carbon hauv pua pua ntawm ib feem pua (0.10% max).
Cr: Chromium, muab oxidation (scaling) kuj.
Mo: Molybdenum, muab siab - qhov kub thiab txias tsis kam.
5-5: Sawv cev rau qhov kwv yees feem pua ntawm Chromium (0.5-0.8%) thiab Molybdenum (0.4-0.6%).
Cov hlau no yog cov khoom siv ua haujlwm hauv kev tsim hluav taws xob thiab cov txheej txheem kev lag luam rau cov tshuab ua haujlwm siab ua haujlwm ntawm qhov kub siab.
Ntsiab Specifications thiab Standards
10CrCrMo5-5 feem ntau yog tswj hwm los ntawm European cov qauv, tab sis nws muaj qhov sib npaug ncaj qha lossis ze rau hauv lwm cov qauv thoob ntiaj teb.
| Txuj | Tube Hom | Standard Name | Qib sib npaug (Similar) |
|---|---|---|---|
| TS EN 10216-2 | Seamless | Seamless steel raj rau lub hom phiaj siab - Ntu 2: Alloy thiab tsis yog - alloy steel tubes nrog qhov ntsuas kub siab | - |
| ASTM A335 / ASME SA335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASME SA335 / ASTM A335 / ASTM A335 / ASME SA335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASME SA335 / ASTM A335 / ASTM A335 / ASME SA335 / ASME SA335 / ASTM A335 / ASME SA335 / ASTM A335 / ASME SA335 / ASTM A335 / ASME SA335 / ASTM A335 / ASME SA335 / ASTM A335 / ASME SA335) Cov ntawv pov thawj | Seamless | Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Tsev Kev Pabcuam | P5 / P5c(Ceeb Toom: Qhov sib xyaw ua ke yog ze heev tab sis tsis zoo ib yam) |
| TIAB SA 17175 | Seamless | Tubes rau siab kub | 15Mo3 (ib qho piv txwv ua ntej) |
| TS EN ISO 9329-2 | Seamless | Seamless steel raj rau lub hom phiaj siab - Kev xa tawm cov xwm txheej - Ntu 2: Cov hlau tsis sib xws thiab cov hlau tsis muaj hlau nrog cov khoom ntsuas kub siab | - |
Chemical Composition (Tshwj xeeb raws li EN 10216-2)
Cov muaj pes tsawg leeg yog qhov tseem ceeb rau kev ua tiav cov khoom siv kho tshuab uas xav tau.
| Element | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.10 |
| Silicon (Si) | Tsawg dua los yog sib npaug li 0.35 |
| Manganese (Mn) | 0.40 - 0.70 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.015 |
| Chromium (Cr) | 0.50 - 0.80 |
| Molybdenum (hli) | 0.40 - 0.60 |
Mechanical Properties
Cov khoom tau lees paub los ntawm tus qauv tom qab kev kho cua sov tsim nyog (feem ntau normalizing lossis normalizing thiab tempering).
| Khoom | Tus nqi (ntawm Chav Kub) |
|---|---|
| Yield zog (Rp0.2) | Ntau dua lossis sib npaug li 240 MPa |
| Tensile zog (Rm) | 440 - 590 MPa |
| Elongation (A) | Ntau dua lossis sib npaug li 22% |
High -Tsev Khoom Cuab Yeej:
Qhov no yog thawj qhov laj thawj rau xaiv 10CrMo5-5. Nws khaws ib feem tseem ceeb ntawm nws lub zog ntawm qhov kub thiab txias thiab muaj qhov zoocreep kuj(ua haujlwm kom qeeb deformation nyob rau hauv qhov kev ntxhov siab tas li ntawm qhov kub thiab txias). Nws qhov siab tshaj qhov kev pabcuam kub yog feem ntau mus txog550-600℃(1020-1110℃F).
Cov yam ntxwv thiab qhov zoo
Zoo heev Creep Strength:Muaj peev xwm tiv taus ntev - lub sij hawm raug kev nyuaj siab ntawm qhov kub thiab txias yam tsis muaj deformation tseem ceeb.
Zoo Weldability:Nws tuaj yeem welded siv ntau txoj hauv kev xws li TIG, MIG, thiab SMAW, txawm hais tias ua ntej - cua sov thiab xa tawm -weld heat treatment (PWHT) feem ntau yuav tsum tau tiv thaiv kev tawg thiab txo kev ntxhov siab.
Zoo Oxidation Resistance:Cov ntsiab lus chromium muab cov txheej txheem tiv thaiv oxide uas tiv thaiv qhov scaling (nto oxidation) hauv qhov chaw ib puag ncig.
Zoo Thermal Stability:Nws microstructure tseem ruaj khov nyob rau lub sijhawm ntev ntawm qhov kub thiab txias.
Zoo Formability thiab Machinability:Nws tuaj yeem khoov thiab fabricated nrog cov txheej txheem txheej txheem.
Cov ntawv thov siv
10CrMo5-5 cov kav dej tsuas yog siv rau hauv kev thov siab - qhov kub thiab txias ib puag ncig:
Fais fab nroj tsuag Boilers:Superheater tubes, reheater tubes, cov kav dej tseem ceeb, thiab lwm yam siab - qhov kub siab.
Thaum tshav kub kub Exchangers:Hauv cov nroj tsuag tshuaj thiab cov refineries uas siab -kub gases los yog kua ua tiav.
Petrochemical Kev Lag Luam:Rau cov kav dej hauv qhov cub tawg thiab lwm yam kev kub siab -.
Cheeb Tsam Cua sov Systems:Rau siab -kub cov kav dej kub.
Fabrication thiab Welding Considerations
Ua ntej- cua sov:Qhov tseem ceeb ua ntej welding los tiv thaiv hydrogen -induced txias cracking. Hom ua ntej- kub kub yog nyob rau hauv qhov ntau ntawm150-250 ° F (300-480 ° F).
Tshaj tawm -Weld Heat Treatment (PWHT):Yuav luag ib txwm yuav tsum tau tom qab vuam mus rau:
Relieve residual stresses los ntawm vuam.
Temper lub zog microstructure hauv tshav kub-Teb chaws cuam tshuam (HAZ).
Restore corrosion kuj.
Ib lub voj voog PWHT raug cua sov rau ~ 650-700℃(1200-1290℃F), tuav, thiab tswj kom txias.
Welding Consumables:Cov khoom siv hluav taws xob thiab cov xaim xaim xaim nrog qhov sib txuam lossis ntau dua -kev sib xyaw ua ke (xws li EN ISO 3580-A: E CrMo1) yuav tsum tau siv.
Sib piv nrog lwm cov Boiler Steels
vs. P91 (X10CrMoVNb9-1): P91 has higher Chromium (9%) and added Vanadium and Niobium, making it significantly stronger at higher temperatures (>575℃). 10CrMo5-5 yog siv rau cov xwm txheej tsis tshua muaj zog thiab muaj txiaj ntsig zoo dua.
vs. Carbon Steel (eg, A106 Gr. B):Cov pa roj carbon steel yog pheej yig dua tab sis poob lub zog sai dua 425℃(800℃F) . 10CrMo5-5 yog siv qhov twg cov hlau tsis txaus.
Xaus
10CrMo5-5yog ib qho kev txhim khu kev qha thiab zoo-tsim qis- alloy steel rau boiler thiab siab piping daim ntaub ntawv uas qhov kev pab cuam kub tshaj lub peev xwm ntawm carbon steel tab sis tsis xav tau ntau tshaj (thiab kim) 9-12% chromium steels. Nws cov khoom sib npaug ntawm chromium thiab molybdenum muab kev sib xyaw ua ke zoo heev ntawm lub zog kub-kub, nkag tsis kam, thiab weldability, ua rau nws yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob thermal thiab kev lag luam.
