SA 387 Qib 22 Chav Kawm 2yog 2.25Cr-1Mo siab nkoj steel phaj teev nyob rau hauv ASME SA-387/SA-387M, feem ntau yog siv rau high-temperature thiab high-pressure kev pab cuam nyob rau hauv refineries, petrochemical nroj tsuag, thiab fais fab nroj tsuag; Nws yog tsim los ntawm kev tswj chemistry thiab feem ntau muab nkag rau hauv cov xwm txheej zoo li qub thiab ua kom lub cev muaj zog kom muaj zog tensile zoo, nkag siab, thiab tsis kam mus rau hydrogen nres, ua rau nws haum rau reactors, tshav kub exchangers, boilers, headers, thiab lwm yam siab-muaj Cheebtsam ua hauj lwm ntawm siab kub.
Cov qauv sib npaug rau ASME SA387 Qib 22 Daim Hlau
| BS | EN | ASTM / ASME Cov | DIN |
|---|---|---|---|
| 622-515B | 10CrMo9-10 | SA387 Qib 22 Chav Kawm 2 | 10CrMo9-10 |
Alloy Composition (Raws li ASME Specification)
| Lub npe | Nominal Chromium (%) | Nominal Molybdenum (%) |
|---|---|---|
| SA387 Qib 22 | 2.25 | 1.00 |
Tensile Requirements
| Kev xav tau | Tus nqi |
|---|---|
| Tensile zog | 75 - 100 ksi (515 - 690 MPa) |
| Yield zog (0.2% offset) | Ntau dua lossis sib npaug rau 45 ksi (310 MPa) |
| Elongation hauv 8 nti (200 mm) | Raws li tau teev tseg |
| Elongation hauv 2 nti (50 mm) | Ntau dua lossis sib npaug li 18% |
| Kev txo qis ntawm cheeb tsam | 45% (cov qauv puag ncig) / 40% (cov qauv tiaj tus) |
Chemical Composition Requirements
| Element | Kev Ntsuas Kub | Kev tshuaj xyuas khoom |
|---|---|---|
| Cov pa roj carbon (C) | 0.05 – 0.15 | 0.04 – 0.15 |
| Manganese (Mn) | 0.30 – 0.60 | 0.25 – 0.66 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.035 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.035 |
| Silicon (Si) | Tsawg dua los yog sib npaug li 0.50 | Tsawg dua los yog sib npaug li 0.50 |
| Chromium (Cr) | 2.00 – 2.50 | 1.88 – 2.62 |
| Molybdenum (hli) | 0.90 – 1.10 | 0.85 – 1.15 |
Kev ua thiab kev tsim khoom
Kev ua haujlwm tsom mus rau kev ua tiav qhov sib npaug ntawm lub zog tensile siab thiab ductility.
Kev kho cua sov: Tus qauv xa khoom rau Chav Kawm 2 yog nyob rau hauv qhov qub thiab Tempered (N + T) lossis Quenched thiab Tempered (Q + T). Tempering yuav tsum tau ua nyob rau ntawm qhov kub tsawg kawg nkaus ntawm 1250℃F (675 degree) los kho cov qauv nplej thiab ruaj khov rau cov khoom siv hluav taws xob rau siab -cov kev pabcuam cua sov.
Fabrication & Welding: Qib no yog tsim tshwj xeeb rau weldability hauv kev tsim cov hlab ntsha. Txawm li cas los xij, vim nws cov ntsiab lus alloy, nws feem ntau xav tau Simulated Post- Weld Heat Treatment (SPWHT) kom ntseeg tau tias cov khoom sib dhos ua tiav tswj nws qhov kev ua tau zoo hauv nws qhov chaw ua haujlwm kawg.
Kev Ntsuas Cov Qauv: Kev sim siab tshaj plaws hauv xyoo 2026 suav nrog Cov Khoom Siv Zoo (PMI), kev ntsuas kev sib xyaw ua ke, thiab Hydrostatic Analysis los lav cov khoom tsis raug- dawb ua ntej xa mus rau hauv siab -siab tshuab.
Core Zoo
SA 387 Qib 22 Chav Kawm 2 muab cov txiaj ntsig sib txawv ntawm cov pa roj carbon steel thiab qis dua - qib alloys:
Thaum tshav kub kub kub siab: Cov khoom siv tswj nws cov qauv kev ncaj ncees thiab tiv thaiv deformation ntawm qhov kub txog li 600℃(1112℃F).
Lub zog muaj zog ntau dua: Raws li cov khoom siv hauv chav kawm 2, nws muaj lub zog tensile zoo tshaj (75–100 ksi / 515–690 MPa) piv rau Chav Kawm 1, tso cai rau cov qauv tsim muaj zog hauv siab - cov hlab ntsha siab.
Superior Corrosion Resistance: Cov qib siab ntawm chromium muab kev tiv thaiv zoo heev rau oxidation thiab corrosion, thaum cov ntsiab lus molybdenum tshwj xeeb txhim kho creep tsis kam thiab tensile lub zog ntawm qhov kub siab.
Sour Service Performance: Nws muaj txiaj ntsig zoo hauv qhov chaw qaub qaub (muaj hydrogen sulfide, H₂S), qhov uas nws tiv taus qhov phom sij ntawm hydrogen -induced cracking thiab deterioration.
Durability thiab Longevity: Cov alloy lub peev xwm ua hauj lwm tsis tu ncua rau lub sij hawm ntev nyob rau hauv siab atmospheric siab ua rau nws ib tug txhim khu kev qha kev xaiv rau cov infrastructure tseem ceeb xws li nuclear reactors thiab thermal fais fab nroj tsuag.
Primary Industrial Applications
Petrochemical Kev Lag Luam:Nws yog ib qho tseem ceeb ntawm cov khoom siv rau hydroprocessing reactors, cov khoom siv desulfurization, thiab hloov kho rauv taws. Nws raug xaiv tshwj xeeb rau kev pabcuam qaub(ib puag ncig muaj hydrogen sulfide, 𝐻2𝑆) vim nws tiv thaiv hydrogen corrosion thiab oxidation ntawm qhov kub ntawm 450℃mus rau 550 degree.
Kev tsim hluav taws xob:Cov qib no yog siv rau hauv kev tsim kho ntawm ultra-supercritical thermal fais fab boilers, nrog rau cov khoom xws li boiler nruas, chav headers, turbine casings, thiab roj turbine pov tseg thaum tshav kub kub boilers.
Coal Chemical Kev Lag Luam:Nws yog siv rau gasifier shells, methanol synthesis towers, thiab coke nruas uas yuav tsum tiv taus siab siab (siab tshaj 30 MPa) thiab corrosive syngas ib puag ncig.
Nuclear Sector:Vim nws zoo heev - kub lub zog thiab hydrogen tsis kam, nws yog siv rau nuclear reactor siab hlab ntshathiab liquefied gas cia tanks.
Common Fabricated Components
Fabricators siv SA 387 Qib 22 Chav Kawm 2 los tsim ntau lub hom phiaj - kho vajtse tseem ceeb:
Cov cuab yeej siv siab:Welded boilers, siab hlab ntsha, thiab kub exchangers.
Piping Systems:Siab -kub tubing, flanges, thiab kavsiv los thauj cov txheej txheem cua sov.
Hardware & Fittings:High -kub ducting, yeeb nkab clamps, thiab tshwj xeeb li qub.
Tshwj xeeb Infrastructure:Offshore thiab onshore cov kev pab cuam, shipbuilding, thiab structural daim ntaub ntawv xws li txuas hniav uas yuav tsum tau muaj durability.
Thov ib daim ntawv tshaj tawm rau SA 387 Qib 22 Chav Kawm 2 los ntawm GNEE Steel.
Puas yog SA 387 Qib 22 Chav Kawm 2 muaj nyob rau hauv daim ntawv coil?
Nws yog tsuas yog muab los ua daim hlau thiab ntawv. Coil daim ntawv yog qhov tsawg, vim nws feem ntau yog siv rau cov hlab ntsha loj uas xav tau phaj txiav thiab sib sau.
Qhov txawv ntawm SA 387 Qib 22 Chav Kawm 2 thiab SA 387 Qib 11 yog dab tsi?
Qib 22 muaj cov chromium ntau dua (2.25% vs 1.25%) thiab molybdenum (1% vs 0.5%), muab qhov zoo dua siab -temp lub zog thiab corrosion kuj.
Qhov txawv ntawm Chav Kawm 1 thiab Chav Kawm 2 ntawm SA 387 Qib 22 yog dab tsi?
Chav Kawm 2 yuav tsum muaj kev ntsuam xyuas nruj dua (Charpy V-notch) dua li Chav Kawm 1, kom ntseeg tau tias muaj zog dua, haum rau kev xav tau ntau dua - qhov ntsuas kub siab.
Dab tsi yog qhov tsawg kawg nkaus thickness muaj rau SA 387 Qib 22 Chav Kawm 2 steel phaj?
Qhov tsawg kawg nkaus thickness feem ntau yog 6 hli, thiab nws tuaj yeem muab tau txog li 200 hli los yog tuab dua raws li cov kev cai rau cov hlab ntsha loj.
Cov khoom siv vuam siv tau zoo li cas rau SA 387 Qib 22 Chav Kawm 2?
Sib piv qis- alloy consumables xws li E8018-B2 (stick electrode) los yog ER80S-B2 (MIG/TIG hlau) yog siv los tuav lub zog sib koom tes thiab kub ua hauj.
Dab tsi yog qhov ceev ntawm SA 387 Qib 22 Chav Kawm 2?
Nws qhov ceev yog kwv yees li 7.85 g / cm³, tib yam li cov pa roj carbon zoo tib yam, txhawb kev ntsuas qhov hnyav hauv cov khoom tsim.
Cov kev sim twg yog siv rau kev tswj xyuas zoo ntawm SA 387 Qib 22 Chav Kawm 2?
Kev tswj xyuas zoo suav nrog kev ntsuas tensile, kev ntsuas cuam tshuam, kuaj hardness, kuaj pom qhov tsis txaus, thiab tshuaj lom neeg muaj pes tsawg leeg kom ua tau raws li ASTM cov qauv.
SA 387 Qib 22 Chav Kawm 2 puas tuaj yeem ua tau yooj yim?
Nws muaj nruab nrab machinability. Cov cuab yeej ntse, txiav ceev kom raug, thiab cov kua dej txias yog xav tau vim nws cov ntsiab lus alloy thiab siab zog.
Lub txee lub neej ntawm SA 387 Qib 22 Chav Kawm 2 yog dab tsi yog tias khaws cia kom raug?
Yog tias khaws cia rau hauv qhov chaw qhuav, noo noo- ib puag ncig dawb nrog tiv thaiv- xeb txheej, nws lub txee lub neej tsis txwv, vim nws tsis degrade nyob rau hauv qhov chaw cia khoom.