Txheej txheem cej luam: Dab tsi yog 1.0452?
1.0452yog lub npe khoom siv nyob rau hauvEuropean EN txuj, tshwj xeebTS EN 10216-2. Cov txheej txheem no suav nrog "cov raj seamless steel rau lub hom phiaj siab - cov txheej txheem kev xa khoom - Ntu 2: Tsis yog- alloy thiab alloy steel tubes nrog cov khoom ntsuas kub siab."
Hauv cov ntsiab lus yooj yim,1.0452 yog carbon{1}}manganese hlautshwj xeeb tsim thiab tsim nyog rau siv nyob rau hauv siab - qhov kub thiab txias ib puag ncig, xws li boilers, superheaters, thiab tshav kub exchangers.
Qhov sib npaug tshaj plaws nyob rau hauv dav - sivASTM / ASME txujyogA335 / A335M Qib P11.
Ntsiab Specifications thiab Chemical Composition
Cov khoom siv tau nruj tswj xyuas kom ntseeg tau tias kev ua haujlwm nyob rau hauv siab thiab kub.
Chemical Composition (tus qauv, % los ntawm qhov hnyav):
| Element | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | 0.10 - 0.20 |
| Manganese (Mn) | 0.30 - 0.80 |
| Phosphorus (P) | max 0.025 |
| Sulfur (S) | max 0.015 |
| Silicon (Si) | 0.50 - 1.00 |
| Chromium (Cr) | 0.70 - 1.10 |
| Molybdenum (hli) | 0.40 - 0.60 |
Vim li cas qhov kev sib xyaw no tseem ceeb:
Carbon thiab Manganese:Muab qhov tseem ceeb ntawm lub zog thiab toughness.
Chromium thiab Molybdenum:Cov no yog cov ntsiab lus tseem ceeb alloying. Lawv ua tau zoo heev:
Creep zog:Kev tiv thaiv deformation nyob rau hauv ntev - lub sij hawm raug rau kev nyuaj siab thiab kub.
Oxidation Resistance:Tsis kam mus scaling (nto oxidation) ntawm qhov kub thiab txias.
Mechanical Properties
Cov khoom yog lav tom qab kev kho cua sov tshwj xeeb (normalizing lossis normalizing thiab tempering).
| Khoom | Tus nqi |
|---|---|
| Tensile zog (Rm) | 415 - 585 MPa |
| Yield zog (Rp0.2) | min . 205 MPa |
| Elongation (A) | min . 22% (vim nrog phab ntsa thickness) |
Cov yam ntxwv tseem ceeb thiab qhov zoo
Zoo heev High -Temperature Strength:Nws qhov txiaj ntsig tseem ceeb yog tswj kev ua haujlwm ncaj ncees ntawm qhov kub thiab txias uas cov pa roj carbon monoxide yuav tsis muaj zog thiab nkag mus. Nws qhov ntsuas kub zoo ib yam yog txog li ntawm550℃(1022℃F).
Zoo Weldability:Nws tuaj yeem welded siv ntau txoj hauv kev, txawm tias ua ntej- cua sov thiab tom qab-weld heat treatment (PWHT) feem ntau yuav tsum tau tiv thaiv kev tawg thiab txo kev ntxhov siab, tshwj xeeb tshaj yog rau cov kav dej tuab dua - cov kav dej.
Resistance rau Oxidation:Cov ntsiab lus chromium tsim cov txheej txheem oxide ruaj khov uas tiv thaiv cov hlau los ntawm kev degradation ntxiv hauv qhov chaw ib puag ncig.
Formability zoo:Nws tuaj yeem khoov thiab tsim rau hauv cov duab uas xav tau rau boiler tubing systems.
Cov ntawv thov siv
1.0452 boiler kav yog siv nyob rau hauv tseem ceeb heev - kub thiab siab - siab tshuab:
Fais fab Generation Boilers:Rau cov phab ntsa dej, cov raj superheater, thiab cov raj reheater.
Muaj boilers:Hauv ntau cov txheej txheem kev lag luam xav tau chav.
Thaum tshav kub kub Exchangers:Qhov twg tsim muaj qhov kub thiab txias.
Pipelines rau Kub Gases thiab Chav:Nyob rau hauv refineries thiab tshuaj nroj tsuag.
Kev sib piv tseem ceeb thiab sib npaug
Nws yog ib qho tseem ceeb kom nkag siab tias 1.0452 cuam tshuam li cas rau lwm cov qhab nia.
| Txuj | Qib | Sib npaug / Similar |
|---|---|---|
| EN | 1.0452 | (Base Qib) |
| ASTM/ASME | A335 gr. P11 | Qhov sib npaug ze tshaj plaws |
| DIN | 13CrMo4-5 | Qhov tseem ceeb tib yam |
| GOST | 12 kwm | Zoo sib xws |
| UNS | K11597 |
Nws txawv li cas A106 Gr. B:
A106 gr. Byog tus qauv seamless carbon steel yeeb nkab rau siab -kev pabcuam kub. Txawm li cas los xij, nws tsis muaj qhov tseem ceeb chromium thiab molybdenum cov ntsiab lus ntawm 1.0452 / P11.
Siv Case:A106 gr. B yog haum rau qis kub (txog ~ 425-450 degree). Rau siab dua kub thiab xav tau ntau dua creep tej yam kev mob,1.0452/P11 yog yuav tsum tau.
Fabrication thiab tuav kev xav
Vuam:Siv cov hlau sib xws lossis sib xyaw ua ke (xws li ER80S-B2, E8018-B2). Ua raws li cov txheej txheem Vuam Specifications (WPS) nruj me ntsis uas suav nrog pre-heat thiab PWHT cov cai.
Txias Khoov:Muaj peev xwm, tab sis cov yeeb nkab yuav tsum tau rov ua dua - cua sov- kho tom qab yog tias qhov deformation hnyav, los kho nws cov khoom siv kho tshuab.
Kev tshuaj xyuas:Cov kav dej boiler yuav raug nruj tsis yog-Kev Ntsuas Kev Ua Phem (NDT), suav nrog kev kuaj ultrasonic, ntsuas dej hydrostatic, thiab ntsuas tam sim no, kom ntseeg tau tias lawv tsis muaj qhov tsis xws luag.
Cov ntsiab lus
1.0452 Carbon Steel Boiler Yeeb Nkabyog ib qho kev txhim khu kev qha, qis- alloy steel tshwj xeeb tsim los rau kev siv siab - kub thiab siab - siab. Nws muaj pes tsawg leeg ntawm chromium thiab molybdenum muab nws superior creep zog thiab oxidation tsis kam piv rau cov pa carbon steels, ua rau nws yog ib qho tseem ceeb cov khoom nyob rau hauv lub hwj chim thiab txheej txheem industries rau tsim kom muaj kev ruaj ntseg thiab zoo boiler thiab piping systems.
Tsis lees paub:Rau cov ntawv thov tseem ceeb, ib txwm xa mus rau thiab ua raws li tag nrho, tus qauv khoom qub (EN 10216-2) thiab cov qauv tsim siv (xws li ASME Boiler thiab Pressure Vessel Code). Cov ntaub ntawv muab ntawm no yog rau kev taw qhia dav dav nkaus xwb.
