SA387 Qib 22 Chav Kawm 1 yog dab tsi?
SA387 Qib 22 Chav Kawm 1 yog chromium-molybdenum (Cr-Mo) alloy steel phaj tshwj xeeb tsim thiab tsim qauv rau kev tsim cov welded siab hlab ntsha thiab siab -cov khoom kub hauv kev thov kev lag luam. Nws cov yam ntxwv txhais yog nws qhov kev kho cua sov annealed.
Cov yam ntxwv tseem ceeb
Muaj pes tsawg leeg: 2.25Cr-1Mo alloy muab qhov sib npaug zoo ntawm:
Siab -Tub Sab Zog & Creep Resistance (zoo dua qis dua- qib alloy zoo li Qib 11).
Kev ua haujlwm zoo heev rau Hydrogen Attack (HTHA) ntawm qhov kub siab.
Zoo Oxidation thiab Corrosion Resistance.
Cov xwm txheej & Khoom (Raws li -Supplyed):
Lub Xeev Annealed: Rauv txias los tsim cov mos mos, ductile microstructure.
Mechanical Result: Tsawg tawm los thiab tensile lub zog tab sis siab ductility thiab toughness.
Lub hom phiaj ntawm Annealing: kom maximize formability. Nws tuaj yeem tiv taus qhov txias txias heev (piv txwv li, dov, ntxuav lub taub hau) yam tsis muaj kev tawg thaum tsim khoom.
Fabrication Requirement: Tom qab vuam thiab tsim, cov khoom siv yuav tsum tau ua raws li qhov yuav tsum tau ua Post-Weld Heat Treatment (PWHT). Qhov PWHT no (feem ntau ~ 1250℃F / 675 degree) txo cov kev ntxhov siab thiab ua rau cov hlau tsis zoo, txhim kho nws qhov kawg hauv - kev pabcuam lub zog thiab cov khoom.
Cov ntawv thov tseem ceeb
Nws yog siv qhov chaw fabrication complexity xav tau siab formability nyob rau hauv ib tug siab -kev ua tau zoo alloy. Cov kev siv ib txwm muaj xws li:
Hydroprocessing Reactors (Hydrocrackers, Hydrotreaters) hauv refineries.
High-Tsub & Siab-Hloov Kub Exchangers.
Fais fab Boiler Cheebtsam thiab lwm cov hlab ntsha siab hauv cov pob txha thiab nuclear fais fab nroj tsuag.
Chemical Reactors ua haujlwm nyob rau hauv nruj, kub ib puag ncig.
Sib npaug rau ASME SA387 Qib 22 Alloy Steel Phaj
| BS | EN | ASTM / ASME | DIN |
| 622-515B | 10 ZPO 910 | SA387-22-1 | 10 ZPO 910 |
Specifications rau ASME SA387 Qib 22 Alloy Steel Phaj
Chromium & Molybdenum cov ntsiab lus (raws li ASME specification)
| Lub npe | Nominal Chromium Cov ntsiab lus (%) |
Nominal Molybdenum Cov ntsiab lus (%) |
| SA387 Qib 22 | 2.25% | 1.00% |
Tensile Requirements rau ASME SA387 Qib 22 Alloy Steel Phaj Chav Kawm 1 Phaj
| Lub npe: | Yuav tsum tau: | Qib 22 |
| SA387 Qib 22 | Tensile zog, ksi [MPA] | 75 txog 100 [515 rau 690] |
| Yield zog, min, ksi [MPa] / (0.2% offset) | 45 [310] | |
| Elongation hauv 8 nti. [200mm], min % | ... | |
| Elongation hauv 2 nti [50mm], min, % | 18 | |
| Txo thaj tsam, min% | 45 ( ntsuas ntawm cov qauv puag ncig) 40 ( ntsuas ntawm cov qauv tiaj tus) |
Cov Khoom Siv Tshuaj Rau ASME SA387 Qib 22 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| SA387 Qib 22 | ||
| Cov pa roj carbon: | Kev Ntsuas Kub: | 0.05 - 0.15 |
| Product Analysis: | 0.04 - 0.15 | |
| Manganese: | Kev Ntsuas Kub: | 0.30 - 0.60 |
| Product Analysis: | 0.25 - 0.66 | |
| Phosphorus: | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Sulfur (max): | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Silicon: | Kev Ntsuas Kub: | 0.50 max |
| Product Analysis: | 0.50 max | |
| Chromium: | Kev Ntsuas Kub: | 2.00 - 2.50 |
| Product Analysis: | 1.88 - 2.62 | |
| Molybdenum: | Kev Ntsuas Kub: | 0.90 - 1.10 |
| Product Analysis: | 0.85 - 1.15 |
Hauv cov ntsiab lus: SA387 Qib 22 Chav Kawm 1 yog cov qauv tsim, annealed version ntawm classic 2.25Cr-1Mo alloy steel, xaiv tshwj xeeb los pab txhawb kev tsim cov complex, siab -kev siab ncaj siab txog ntsha rau qhov hnyav tshaj plaws - kub thiab hydrogen-kev pab cuam ib puag ncig.
SA387 Qib 22 Chav Kawm 1 yog dab tsi?
SA387 Qib 22 Chav Kawm 1 yog ib qho annealed chromium-molybdenum alloy steel phaj tsim los rau siab - kub siab lub nkoj kev pab cuam, nrog rau cov muaj pes tsawg leeg ntawm 2.25% Cr thiab 1% Mo los tiv thaiv oxidation thiab hydrogen nres hauv refinery thiab fais fab nroj tsuag daim ntaub ntawv.
Dab tsi yog cov yam ntxwv ntawm SA387 Qib 22 Chav Kawm 1?
Nyob rau hauv nws cov mob annealed, SA387 Qib 22 Chav Kawm 1 feem ntau muaj lub zog tensile ntawm 415-585 MPa (60-85 ksi), qhov tsawg kawg nkaus lub zog ntawm 205 MPa (30 ksi), thiab ductility siab, ua rau nws tsim nyog rau kev tsim hnyav ua ntej kev kho cua sov kawg.
SA387 Qib 22 Chav Kawm 1 feem ntau siv nyob qhov twg?
Nws yog dav siv nyob rau hauv hydroprocessing reactors, hydrocrackers, tshav kub exchangers, thiab siab -kub siab hlab ntsha nyob rau hauv petrochemical thiab fais fab kev lag luam, tshwj xeeb tshaj yog qhov yuav tsum tau tiv thaiv hydrogen nres thiab creep.
SA387 Qib 22 Chav Kawm 1 txawv li cas ntawm Chav Kawm 2?
Chav Kawm 1 yog nkag rau hauv lub xeev annealed kom zoo formability, thaum Class 2 normalized thiab tempered rau siab dua li - xa lub zog. Chav kawm 1 raug xaiv thaum xav tau kev tsim khoom ua ntej ua ntej PWHT zaum kawg.
Post-weld heat treatment (PWHT) yog dab tsi rau SA387 Qib 22 Chav Kawm 1?
PWHT yog qhov yuav tsum tau ua thiab feem ntau ua tiav ntawm 1250-1300℃F (675-705 degree) txhawm rau txo cov kev ntxhov siab ntawm vuam, tiv thaiv hydrogen-induced cracking, thiab rov qab corrosion kuj nyob rau hauv qhov vuam cheeb tsam rau high-temperature kev pab cuam.
Dab tsi yog cov khoom sib npaug rau SA387 Qib 22 Chav Kawm 1?
Cov khoom sib npaug muaj xws li UNS K21590, European 10CrMo9-10 (1.7380), thiab generic designation 2.25Cr-1Mo steel. Txawm li cas los xij, qhov sib npaug sib npaug yog nyob ntawm kev kho cua sov thiab cov ntawv pov thawj uas yuav tsum tau ua.
SA387 Qib 22 Chav Kawm 1 puas tuaj yeem siv rau hauv kev pabcuam hydrogen?
Yog lawm, nws 2.25% chromium thiab 1% molybdenum cov ntsiab lus muab kev tiv thaiv zoo rau siab -kub hydrogen nres (HTHA), ua rau nws xaiv tus qauv rau hydrogen ua units hauv refineries.
Dab tsi yog cov txheej txheem tsim thiab machining rau SA387 Qib 22 Chav Kawm 1?
Vim nws qhov kev mob annealed, nws muaj qhov zoo txias formability tab sis yuav tsum tau preheating rau kub sib sau thiab tswj machining kom tsis txhob ua hauj lwm hnyav heev, nrog rau cov cuab yeej haum rau alloy steels.
Cov qauv dab tsi tau lees paub SA387 Qib 22 Chav Kawm 1 daim hlau?
Cov phaj tau ntawv pov thawj rau ASME SA387 / SA387M thiab ASTM A387 / A387M cov qauv, nrog cov ntawv tshaj tawm zeb xeem (MTRs) muab cov khoom siv tshuaj lom neeg thiab khoom siv rau EN 10204 3.1 lossis 3.2.
SA387 Qib 22 Chav Kawm 1 piv rau Qib 11 lossis Qib 5 li cas?
Piv rau qib qis -alloy qib zoo li Qib 11 (1.25Cr-}0.5Mo) lossis Qib 5 (5Cr-0.5Mo), Qib 22 muaj qhov zoo tshaj qhov kub thiab txias zog thiab hydrogen tsis kam, tab sis yuav tsum tau nruj dua vuam thiab kev kho cua sov tswj.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
