Dab tsi yog qhov zoo ntawm ASME SA387 Qib 11 Chav Kawm 2 ?
ASME SA387 Qib 11 Chav Kawm 2muaj superior siab - kub lub zog, zoo heev corrosion / oxidation tsis kam (vim chromium & molybdenum), thiab txhim kho toughness rau xav tau lub siab lub nkoj siv nyob rau hauv cov roj, roj, thiab fais fab kev lag luam, nrog rau chav kawm 2 muab siab tensile zog thiab kev ua tau zoo dua li Class 1, ua rau nws zoo tagnrho rau cov kev pab cuam hnyav uas lub zog ntawm elevated temps yog qhov tseem ceeb.
SA387 Qib 11 Chav Kawm 2 yog chromium-molybdenum alloy steel phaj rau siab-kub siab hlab ntsha, boilers, thiab tshav kub exchangers, muab zoo heev zog thiab oxidation/corrosion kuj vim nws 1-1.5% Chromium thiab 0.45-0.65% Molybdenum cov ntsiab lus siab dua 10207, tensile, 43 ksi tawm los) dua Class 1.
ASME SA387 Qib 11 Chav Kawm 2 Chrome Moly (Chromium Molybdenum) steel yog alloyed nrog 1.25% Cr thiab 0.50% Mo. Cov alloys tshwj xeeb ua ke muab cov hlau txhim kho cov khoom siv kho tshuab (tensile & yield) ntawm qhov kub ua haujlwm siab, nrog rau kev xeb thiab oxidation kuj zoo heev.
Nrog rau qhov zoo heev tiv taus kub thiab corrosion, hom hlau no feem ntau yog siv rau hauv cov roj, roj thiab hluav taws xob tsim kev lag luam, tshuaj ua haujlwm thiab cov chaw tsim hluav taws xob nuclear. Peb cov khoom lag luam raug txiav txim nrog cov tshuaj kho kom zoo dua qub thiab tsim nyog rau kev rov ua dua ntawm ntau PWHT (Post Weld Heat Treatment) cycles, kom tau raws li cov qauv tsim nruj tshaj plaws. Koj tuaj yeem tso siab tau tias koj cov cuab yeej yuav muaj kev nyab xeeb los ntawm corrosion thiab ua haujlwm ntawm qhov kub thiab txias.
Cov yam ntxwv tseem ceeb:
Daim ntawv thov:
Tsim los rau siab kub kev pab cuam nyob rau hauv welded boilers, siab hlab ntsha, thiab tshav kub exchangers (feem ntau nyob rau hauv roj, roj, petrochemical industries).
Alloying Elements:
Muaj li ntawm 1.25% Chromium (rau oxidation / corrosion kuj) thiab 0.5% Molybdenum (rau siab -temp zog).
Chav Kawm 2 Lub Zog:
Qhia meej lub zog tensile siab dua (75-100 ksi lossis 515-690 MPa) thiab lub zog tawm los (min 43 ksi lossis 310 MPa) piv rau Chav Kawm 1.
Khoom siv:
Chromium-Molybdenum (Cr-Mo) Alloy Steel.
Cov txiaj ntsig:
High -Tsub Ua Haujlwm:Khaws lub zog thiab kev ncaj ncees ntawm qhov kub siab.
Corrosion Resistance:Chromium muab kev tiv thaiv rau oxidation thiab corrosive ib puag ncig, suav nrog "kua roj" (H₂S).
Weldability:Haum rau vuam, qhov tseem ceeb rau kev tsim cov hlab ntsha siab.
Hauv Cov Ntsiab Lus Yooj Yim: Nws yog ib qho tawv, cua sov-cov phaj steel siv los tsim cov khoom xws li cov tso tsheb hlau luam loj thiab cov kav dej uas tuav cov kua dej kub lossis roj, kom ntseeg tau tias lawv tsis xeb lossis tawg hauv siab thiab cua sov.
Lub hardness ntawm ASME SA387 Qib 11 Chav Kawm 2 yog dab tsi?
ASME SA387 Qib 11 Chav Kawm 2 tsis muaj ib tus nqi ruaj khov tab sis yuav tsum ua kom tau raws li qhov tsawg kawg nkaus tensile zog, feem ntau yuav tsum muaj qhov tsawg kawg nkaus lub zog ntawm 310 MPa (45 ksi) thiab tensile lub zog ntawm 515-690 MPa (75-100 ksi), nrog hardness sib txawv nyob rau hauv cov kev kho mob ntawm cov thickness thiab cov thickness. theem, feem ntau nyob ib ncig ntawm 130-170 HBW (Brinell hardness) rau cov ntawv thov raug, txawm hais tias qhov kev sim hardness tshwj xeeb (xws li Brinell, Rockwell) yuav tsum tau ua ib qhov project.
Dab tsi yog daim ntawv thov raug cai ntawm ASME SA387 Qib 11 Chav Kawm 2?
ASME SA387 Qib 11 Chav Kawm 2 feem ntau yog siv rau cov hlab ntsha siab thiab cov boilers hauv siab -kub siv, tshwj xeeb tshaj yog nyob rau hauv cov roj, roj, thiab petrochemical industries, vim nws chromium- molybdenum alloy muaj pes tsawg leeg muab siab heev - kub lub zog, corrosion, thiab oxidation kuj. Cov ntawv thov tseem ceeb suav nrog cov khoom siv hluav taws xob, cov kav dej, cov tso tsheb hlau luam, cov flanges, thiab lwm yam khoom siv los tuav cov kua dej kub thiab roj, txawm tias nyob rau hauv ib puag ncig qaub (sulfidic).
ASME SA387 Qib 11 Chav Kawm 2 sib npaug li cas?
ASME SA387 Qib 11 Chav Kawm 2 yog qhov tseem ceeb tib yam li ASTM A387 Qib 11 Chav Kawm 2, siv sib hloov rau Cr-Mo alloy steel hauv cov hlab ntsha siab, nrog qhov sib txawv tseem ceeb yog tus qauv (ASME rau boilers / siab hlab ntsha, ASTM rau cov khoom siv dav dav). Thoob ntiaj teb, nws qhov sib npaug ze tshaj plaws yog British Standard BS 621B, thaum qhov sib npaug European yog EN 10028 13CrMoSi5-5, txawm tias tsis yog qhov sib tw ncaj qha hauv txhua lub zog.
Sib npaug
| BS | EN | ASTM/ASME | DIN |
| 621 B | ––– | SA387-11-2 | ––– |
Cov Khoom Siv Tshuaj Rau ASME SA387 Qib 11 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| SA387 Qib 11 | ||
| Cov pa roj carbon: | Kev Ntsuas Kub: | 0.05 - 0.17 |
| Product Analysis: | 0.04 - 0.17 | |
| Manganese: | Kev Ntsuas Kub: | 0.40 - 0.65 |
| Product Analysis: | 0.35 - 0.73 | |
| 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 - 0.80 |
| Product Analysis: | 0.44 - 0.86 | |
| Chromium: | Kev Ntsuas Kub: | 1.00 - 1.50 |
| Product Analysis: | 0.94 - 1.56 | |
| Molybdenum: | Kev Ntsuas Kub: | 0.45 - 0.65 |
| Product Analysis: | 0.45 - 0.70 |
Tensile Requirements rau Chav Kawm 2 Phaj
| Lub npe | Kev xav tau | Qib 22 |
|---|---|---|
| A387 Qib 11 | Tensile zog, ksi [MPA] | 75 txog 100 [515 rau 690] |
| Yield zog, min, ksi [MPa] / (0.2% offset) | 43 [310] | |
| Elongation hauv 8 nti [200 mm], min % | 18 | |
| Elongation hauv 2 nti [50 mm], min, % | 22 | |
| Txo thaj tsam, min% |
1 ASME SA387 Qib 11 Chav Kawm 2 hnyav npaum li cas?
SME SA387 Qib 11 Chav Kawm 2 yog chrome-moly alloy steel rau siab-temp siab hlab ntsha, paub txog nws lub zog, tsis yog qhov hnyav, vim nws qhov hnyav nyob ntawm phaj qhov ntev (thickness, ntev, dav) thiab qhov ntom ntom (ib puag ncig 7850 kg / m³ lossis 0.285 zoo li cov phaj tuab, 4 lbs / in³) ft phaj hnyav tshaj 1300 lbs ntawm 1-nti thickness. Nws lub zog muaj zog (tensile 75-100 ksi, yield 45 ksi min) yog siab dua Class 1, ua rau nws tsim nyog rau kev thov.
2 Tus lej P ntawm ASME SA387 Qib 11 Chav Kawm 2 yog dab tsi?
Raws li ASME Boiler thiab Pressure Vessel Code (BPVC) Tshooj IX, P-tus lej rau ASME SA387 Qib 11 Chav Kawm 2 yog P-Tsis yog. 4.
3 Dab tsi welding pas nrig rau ASME SA387 Qib 11 Chav Kawm 2 carbon steel?
Rau ASME SA387 Qib 11 Chav Kawm 2 (a 2.25% Cr-1% Mo qis-alloy steel), koj yuav tsum siv qhov sib txuam lossis sib npaug 2.25Cr-1Mo welding consumables, xws li AWS A5.28/A5.28M E80C-B2/ER80S-B2 rau MIG/TIG los yog A5.5 E8018-B2 rau SMAW (stick), xyuas kom zoo preheat (nyob ib ncig ntawm 149℃/ 300℃F) thiab tom qab vuam thaum tshav kub kub kho (PWHT) rau qhov zoo tshaj plaws mechanical zog, raws li qhov no yog ib tug codec.
4 Puas yog ASME SA387 Qib 11 Chav Kawm 2 kev kub ceev hlau?
Tsis yog, ASME SA387 Qib 11 Chav Kawm 2 tsis siab -ceev steel (HSS); nws yog ib qho qis- alloy chromium-molybdenum (Cr-Mo) steel tshwj xeeb rau siab -kub siab cov hlab ntsha, muab cov oxidation zoo thiab lub zog, tsis zoo li HSS siv rau cov cuab yeej txiav uas xav tau huab cua hardness thiab hnav tsis kam ntawm kev kub ceev.
5 Qhov kub thiab txias yog ASME SA387 Qib 11 Chav Kawm 2?
ASME SA387 Qib 11 Chav Kawm 2 yog qhov siab -kub alloy steel rau cov hlab ntsha siab, nrog rau nws cov kev kho cua sov yuav tsum muaj qhov ntsuas kub tsawg kawg nkaus ntawm 620℃(1150℃F), thiab nws tau tsim los rau kev pabcuam hauv qhov kub siab, feem ntau siv nyob rau hauv thaj tsam li 350℃txog 480℃(ib ncig ntawm 660℃frosts), zoo corrosion kuj. daim ntawv thov.
ASME SA387 Qib 11 Chav Kawm 2 yog dab tsi?
ASME SA387 Qib 11 Chav Kawm 2 yog chromium-molybdenum (Cr-Mo) alloy steel phaj tsim rau welded boilers thiab siab hlab ntsha nyob rau hauv siab- kub kev pab cuam, muab zoo heev oxidation/corrosion tsis kam thiab lub zog vim nws ~ 1.25% Chromium thiab ~ 0.5% petrochemical cov ntsiab lus, Molybdenum roj thiab cov khoom siv tshuaj lom neeg. Nws yog feem ntau muab cov normalized thiab tempered, ntsuas siab -temp kev ua tau zoo nrog formability zoo thiab weldability rau lub siab tseem ceeb- muaj cov khoom.
6 Puas yog ASME SA387 Qib 11 Chav Kawm 2 carbon steel?
Tsis yog, ASME SA387 Qib 11 Chav Kawm 2 tsis yog carbon steel; nws yog chromium-molybdenum (Cr-}Mo) alloy steel, hom qis- alloy steel tshwj xeeb tsim los rau siab -kub siab lub nkoj siv, muab lub zog zoo dua, oxidation, thiab corrosion kuj piv rau carbon steel vim nws ntxiv chromium thiab molybdenum cov ntsiab lus. Thaum nws muaj cov pa roj carbon tsawg (ib puag ncig 0.04-0.17%), cov ntsiab lus alloying txhais tau tias nws yog chromium-molybdenum hlau, tsis yog cov pa roj carbon yooj yim.
7 Dab tsi yuav tsum tau ceev faj thaum vuam ASME SA387 Qib 11 Chav Kawm 2?
Thaum vuam SA387 Qib 11 Chav Kawm 2 (a Cr-Mo alloy steel), cov lus ceeb toom tseem ceeb suav nrog kev ua kom sov ua ntej (ib puag ncig 149℃/ 300℃F), tsim nyog muab tub lim hlau (EB2 pawg), nruj ua raws li WPS / PQR, thiab Post- Weld Heat Treatment 10℃F (PW) (PW) los tiv thaiv brittle martensitic theem tsim thiab tawg, nrog rau cov qauv kev nyab xeeb (PPE, qhov cua, saib hluav taws).
Yog tias koj xav paub ntau ntxiv txog (牌号)GNEE cov khoom, koj tuaj yeem xa email rau toinfo@gneesteels.com . Peb zoo siab tshaj los pab koj.
