Dab tsi yog qhov weldability ntawm ASME SA533 Qib B?
ASME SA533 Qib B yog manganese-molybdenum-nickel alloy steel nrog zoo heev, ncaj weldability, tshwj xeeb yog tsim los rau tuab- phab ntsa siab hlab ntsha thiab kev siv nuclear. Nws tuaj yeem welded siv cov txheej txheem kev lag luam, suav nrog submerged arc (SAW) thiab electroslag vuam (ESW), txawm tias nyob rau hauv qhov hnyav.
ASME SA513 Qib B yog cov khoom siv tseem ceeb tshaj plaws uas ua rau muaj kev ua neej nyob li ntawm 60 xyoo nyob rau hauv ib qho ntawm cov kev ua phem tshaj plaws hauv ntiaj teb. Nws yog Manganese-Molybdenum-Nickel alloy steel uas muab lub zog tseem ceeb rau lub zog hluav taws xob nuclear lub reactor circuit. Vim tias cov tuab tuab thiab kev nyab xeeb, tsuas yog ob peb lub mills tshwj xeeb hauv lub ntiaj teb no muaj peev xwm tsim tau qib no mus rau qib purity uas yuav tsum tau ua thiab dhau los ntawm - thickness mechanical uniformity.
Cov yam ntxwv tseem ceeb
Ntev - Lub Sijhawm Kev Ntseeg:Cov ntaub ntawv pov thawj nyob rau hauv lub ntiaj teb no nuclear fleet.
Weld-Kev Ua Haujlwm Sib Koom:Teb zoo kawg nkaus rau submerged arc vuam (SAW) rau cov pob qij txha tuab.
Zero-Cov Qauv Tsis Zoo:Ua raws li 100% volumetric tshuaj xyuas.
Creep Resistance:Zoo stability ntawm qhov kub thiab txias ntawm lub reactor.
Qib Qib
"SA":ASME Tshooj II (Ferrous Material) tus cim.
"533":Cov lus qhia tshwj xeeb rau Manganese-Molybdenum-Nickel alloy daim hlau.
"Qib B":Qhia meej txog Mn-Mo-Ni tshuaj tshuav nyiaj li cas
Kev sib piv (vs. SA537 Chav Kawm 2)
Lub zog:SA533 (80 ksi) muaj zog dua SA537 (60 ksi tawm los).
Thickness:SA537 yog txwv rau 4 "; SA533 tuaj yeem mus txog 12" +.
Alloy System:SA537 yog carbon-manganese steel; SA533 yog npib tsib xee- hlau alloy.
Nqe:SA533 tseem kim dua vim yog Nickel thiab Molybdenum.
Cov ntawv thov siv
Vessel Kaw Lub Taub Hau:Tshem tawm sab saum toj ntawm lub nkoj reactor.
Lub taub hau hauv qab:Hemispherical puag ntawm RPV.
Kev Nyab Xeeb Txhaj Tank:Cov nkoj uas tuav dej txias thaum muaj xwm ceev.
Heavy- Phab ntsa Industrial Separators:Rau siab -siab offshore gas processing.
Dab tsi yog qhov weldability ntawm ASME SA533 Qib B?
Yog lawm, ASME SA533 Qib B yog weldable. Txawm li cas los xij, vim nws cov ntsiab lus alloy, cov txheej txheem vuam tshwj xeeb yuav tsum tau ua kom ntseeg tau siab -welds zoo. Preheating thiab post-weld heat treatment (PWHT) tej zaum yuav xav tau, tshwj xeeb tshaj yog rau cov phaj tuab, txhawm rau txo cov kev ntxhov siab thiab txo qhov kev pheej hmoo ntawm kev tawg. Kev siv cov ntaub ntawv muab tub lim tsim nyog kuj tseem ceeb los tswj cov khoom siv kho tshuab hauv thaj chaw welded.
Lub zog tensile ntawm ASME SA533 Qib B yog dab tsi?
Lub zog tensile ntawm ASME SA533 Qib B yog feem ntau ntawm 70 ksi thiab 90 ksi (485-620 MPa). Lub zog tensile siab no ua kom ntseeg tau tias cov khoom siv tuaj yeem tiv taus cov kev ntxhov siab tseem ceeb, ua rau nws zoo tagnrho rau kev siv xws li cov hlab ntsha siab, cov khoom siv hluav taws xob, thiab lwm yam tseem ceeb uas lub zog thiab kav ntev yog qhov tseem ceeb.
Cov ntsiab lus phosphorus hauv ASME SA533 Qib B yog dab tsi?
Cov ntsiab lus phosphorus hauv ASME SA533 Qib B raug txwv rau qhov siab tshaj plaws ntawm 0.035%. Cov ntsiab lus phosphorus tsawg yog qhov tseem ceeb los xyuas kom meej tias cov hlau tseem khov thiab tsis ua nkig, tshwj xeeb tshaj yog thaum raug kub siab thiab qis qis. Kev tswj hwm cov ntsiab lus phosphorus pab tiv thaiv kev tsim cov teeb meem cuam tshuam uas tuaj yeem cuam tshuam cov khoom siv kho tshuab.
| ASME SA533 Qib B -Cov tshuaj lom neeg | |
| Element | Qib B Class 2 (GrB Cl2) |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.25 |
| Silicon (Si) | 0.15–0.40 |
| Manganese (Mn) | 1.15–1.50 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.012 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.015 |
| Vanadium (V) | Tsawg dua lossis sib npaug li 0.01 |
| Nickel (Ni) | 0.40–0.70 |
| Copper (Cu) | Tsawg dua lossis sib npaug li 0.10 |
| Molybdenum (hli) | 0.45–0.60 |
| ASME SA533 Qib B - Tensile Requirements | |
| Khoom | Qib B Class 2 (GrB Cl2) |
| Yield zog (ReL, MPa) | Ntau dua lossis sib npaug rau 485 MPa (70 ksi) |
| Tensile zog (Rm, MPa) | 620-795 MPa (90-115 ksi) |
| Elongation (min) | 16% (hauv 2 nti lossis 50 mm) |
1. Dab tsi yog cov ntsiab lus ntawm silicon hauv ASME SA533 Qib B?
Cov ntsiab lus silicon hauv ASME SA533 Qib B feem ntau yog li ntawm 0.15% txog 0.35%. Silicon yog siv los txhim kho cov hlau deoxidation thiab ua rau cov khoom siv tag nrho lub zog thiab ua haujlwm rau siab -kub oxidation. Cov ntsiab lus ntawm silicon tswj tau pab txhim kho cov khoom ua tau zoo nyob rau hauv siab - ib puag ncig siab, ua kom nws ruaj khov rau kev siv hauv kev lag luam xws li cov hlab ntsha thiab cov reactors.
2. Dab tsi yog sulfur ntsiab lus hauv ASME SA533 Qib B?
Cov ntsiab lus sulfur hauv ASME SA533 Qib B feem ntau txwv rau 0.035%. Cov ntsiab lus tsis tshua muaj leej faj yog qhov tseem ceeb rau kev ua kom cov hlau tsis muaj zog thiab tiv thaiv kev tsim cov khoom phom sij sulfide uas tuaj yeem ua rau cov khoom tsis muaj zog lossis ua rau muaj qhov tsis xws luag thaum vuam. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv cov hlab ntsha siab thiab lwm yam siab - kev siv kev ntxhov siab uas cov khoom siv yog qhov tseem ceeb.
3. Dab tsi yog cov yam ntxwv ntawm ASME SA533 Qib B?
Cov khoom siv kho tshuab ntawm ASME SA533 Qib B suav nrog lub zog tensile xws li 70 txog 90 ksi (485-620 MPa). Cov khoom siv kuj muaj lub zog tawm ntawm kwv yees li 50 ksi (345 MPa) thiab elongation tsawg kawg yog 20% hauv 8 ntiv tes (200 mm). Cov khoom no ua rau SA533 Qib B haum rau kev siv hauv cov ntawv thov uas xav tau lub zog siab thiab cuam tshuam, tshwj xeeb hauv cov hlab ntsha thiab cov boilers.
4. Dab tsi yog qhov yuav tsum tau muaj zog toughness rau SA533 Qib B?
ASME SA533 Qib B yuav tsum ua kom tau raws li qhov yuav tsum tau ua kom muaj zog, uas tau lees paub los ntawm kev sim cuam tshuam. Cov khoom siv yuav tsum tau tiv taus qhov tsawg kawg nkaus lub zog nqus ntawm 20 ft -lbs (27 J) ntawm qhov kub ntawm -50℃F (-46℃). Qhov no ua kom ntseeg tau tias cov hlau tuaj yeem tswj hwm nws cov qauv kev ntseeg siab thiab tiv thaiv cov pob txha tawg txawm tias nyob rau hauv cov xwm txheej txias, ua rau nws tsim nyog siv rau hauv qhov chaw tseem ceeb, kev ntxhov siab.
5. Cov ntsiab lus carbon ntawm ASME SA533 Qib B yog dab tsi?
Cov ntsiab lus carbon ntawm ASME SA533 Qib B feem ntau yog li ntawm 0.12% txog 0.18%. Cov ntsiab lus tsis tshua muaj carbon zoo txhim kho cov hlau weldability thiab txo qhov kev pheej hmoo ntawm kev tawg thaum vuam, thaum tseem tuav cov khoom siv lub zog thiab toughness. Qhov no tso cai rau nws siv rau ntau yam kev siv tseem ceeb, suav nrog cov hlab ntsha siab thiab lwm qhov chaw siab - kev ntxhov siab.
6. Cov txheej txheem kho cua sov rau ASME SA533 Qib B yog dab tsi?
ASME SA533 Qib B feem ntau yog cua sov-kho los ntawm quenching thiab tempering. Cov khoom yog rhuab mus rau ib tug kub kub, quenched mus cuag ib tug hardened qauv, thiab ces tempered kom txo brittleness thaum tuav lub zog. Cov txheej txheem kev kho cua sov no txhim kho cov khoom siv tag nrho cov khoom siv, xws li lub zog tensile, yield zog, thiab toughness, ua rau nws haum rau siab - kev nyuaj siab thiab qis - kub daim ntawv thov.
7. Dab tsi yog manganese cov ntsiab lus hauv ASME SA533 Qib B?
Cov ntsiab lus manganese hauv ASME SA533 Qib B feem ntau yog li ntawm 0.60% txog 1.30%. Manganese yog ib qho tseem ceeb alloying ntsiab uas txhim kho cov khoom lub zog, hardness, thiab toughness. Nws kuj tseem pab hauv deoxidation thaum lub sij hawm tsim cov hlau thiab ua rau cov khoom tsis kam hnav thiab deformation. Cov ntsiab lus manganese plays lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm SA533 Qib B hauv kev thov kev thov.
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
