ASME SA387 Qib 22 Chav Kawm 2 steel hnyav npaum li cas?
ASME SA387 Qib 22 Chav Kawm 2 steel tsis yog qhov "hnyav" hauv qhov ntom, tab sis nws qhov hnyav nyob ntawm nws qhov ntev (thickness, dav, ntev); nws yog Cr-Mo alloy steel nrog qhov ntom ntom0.283 lbs/in³ (7.8 g/cm³) Qhov hnyav, zoo ib yam li lwm cov hlau, tab sis nws qhov hnyav hnyav los ntawm nws cov muaj pes tsawg leeg rau siab -kub siab cov hlab ntsha, muab lub zog siab (75-100 ksi tensile, 45 ksi yield) nrog chromium thiab molybdenum.
Peb muab SA387 Gr. 22 Alloy Steel Phaj thiab Cov Ntawv yog siab rau kev txaus siab rau kev lag luam inferable los ntawm nws cov xeb affirmation qhwv. No SA387 Gr. 22 Alloy Steel Phaj thiab Cov Ntawv yog tsim los siv cov khoom siv hauv ntiaj teb thiab cov tswv yim niaj hnub raws li qhia los ntawm cov qauv kev lag luam teeb tsa. Cov neeg siv khoom tuaj yeem tau txais txiaj ntsig no steel phaj los ntawm peb ntawm kev lag luam tsav tsheb.
SA387 Gr. 22 Alloy Steel Phaj thiab Sheets yog kev ntsuam xyuas ntawm chromium-molybdenum amalgam tau npaj tsim los siv cov khoom siv hauv cov welded boilers thiab cov hlab ntsha hnyav uas yuav tsum tau siv rau hauv lub koom haum kub siab. Nrog dumbfounding warmth tiv thaiv thiab hem ua rau puas / oxidation zoo, qhov kev ntsuam xyuas steel yog zoo tagnrho rau siv nyob rau hauv lub creation, roj thiab roj kev lag luam.
Kev caij tsheb tsis muaj peev xwm nyob hauv lub chaw ntau pob no, peb koom nrog muab SA387 Gr. 22 Alloy Steel Phaj thiab Cov Ntawv. Raws li kev cai lij choj raws li tau teev tseg los ntawm kev ua lag luam, cov no raug kuaj xyuas ua ntej xa mus. Ntxiv rau qhov no, lawv qhov kev ua tau zoo nrog peb ntawm kev lag luam ntu kev tsav tsheb ua rau cov no tau qhuas heev.
Cov yam ntxwv tseem ceeb:
Khoom siv:Alloy Steel Phaj.
Txheem:ASME SA387 (ASTM A387).
Qib:22 (qhia txog ~ 2.25% Cr, ~ 1% Mo).
Chav kawm:1 (qis zog, zoo formability / weldability dua Class 2).
Daim ntawv thov:Welded boilers, siab hlab ntsha, siab - kub kev pab cuam.
Khoom:Zoo heev tiv thaiv oxidation, corrosion, thiab kub kub.
Chemical Composition (Hom rau Qib 22):
Chromium (Cr):Nyob ib ncig ntawm 2.25%.
Molybdenum (Molybdenum):Kwv yees li 1%.
Cov pa roj carbon (C):Qhov qis dua (piv txwv li, 0.05-0.17% rau Chav Kawm 1).
Vim li cas Siv Nws?
Cov ntsiab lus chromium thiab molybdenum muab qhov siab tshaj - qhov kub thiab txias thiab tiv thaiv kev nkag mus, pitting, thiab sulfide kev ntxhov siab tawg, ua rau nws zoo tagnrho rau kev xav tau kev lag luam ib puag ncig uas carbon hlau yuav ua tsis tiav. Chav Kawm 1 muaj qhov zoo dua ductility thiab yooj yim ntawm fabrication piv rau Chav Kawm 2.
aSME SA387 GR 22 CLASS 2 Phaj Specification
Qib: ASTM A387 Gr 22 CL.2 Alloy Steel Phaj
TxujQauv: ASTM A387 / ASME SA387
DavNtev: 1000mm-4500mm
ThicknessLoj: 5mm-150mm
NtevNtev: 3000mm-18000mm
Impact kuajKub: -52 ° C
Txheej txheem: Kub-Rolled (HR)
Dab tsi yog qhov txawv ntawm ASME SA387 Qib 22 Chav Kawm thiab ASME SA387 Qib 22 Chav Kawm 1?
ASME SA387 Qib 22 Chav Kawm 1 thiab Chav Kawm 2 yog ob qho tib si chromium-molybdenum alloy steels rau qhov kub siab, tab sis qhov sib txawv tseem ceeb nyob hauv lawv cov khoom siv kho tshuab (lub zog); Chav Kawm 2 muaj zog tensile ntau dua (75-100 ksi vs. 60-85 ksi) thiab tawm lub zog (45 ksi vs . 30 ksi) piv rau Chav Kawm 1, thaum tuav cov elongation zoo sib xws, ua rau Chav Kawm 2 haum rau kev xav tau ntau dua - qhov kub thiab txias, kev siv siab.
Dab tsi yog daim ntawv thov kev lag luam ntawm ASME SA387 Qib 22 Chav Kawm 2?
ASME SA387 Qib 22 Chav Kawm 2 steel yog chromium-molybdenum alloy feem ntau siv hauv cov hlab ntsha siab, boilers, thiab cov cua kub sib txawv hauv cov roj & roj, petrochemical, thiab hluav taws xob tsim kev lag luam vim nws lub zog zoo heev, ductility, thiab tsis kam mus rau kub thiab corrosion, nrog rau hauv cov roj qaub ib puag ncig. Cov ntawv thov tseem ceeb suav nrog cov reactors, kav dej, turbines, thiab lwm yam khoom siv uas xav tau kev ua tau zoo hauv qab siab siab thiab thermal stress.
ASME SA387 Qib 22 Qib 2 kev kub ceev hlau yog dab tsi?
ASME SA387 Qib 22 Chav Kawm 2 yog chromium-molybdenum alloy steel phaj tsim rau siab- kev pabcuam kub hauv cov hlab ntsha thiab cov boilers, muab cov cua sov ua haujlwm zoo, oxidation, thiab corrosion kuj vim nws cov ntsiab lus chromium thiab molybdenum, nrog rau 'Class 2' qhia tias muaj zog ntau dua (10 kield, 4 kW) dua li Chav Kawm 1. Nws yog cov khoom siv zoo rau cov roj, roj, thiab tshuaj lom neeg kev lag luam, paub txog qhov zoo weldability thiab kev ua tau zoo nyob rau hauv kev ntxhov siab.
Sib npaug rau ASME SA387 Qib 22 Alloy Steel Phaj
| BS | EN | ASTM / ASME | DIN |
| 622-515B | 10 ZPO 910 | SA387-22-2 | 10 ZPO 910 |
Specifications rau ASME SA387 Qib 22 Alloy Steel Phaj
| Lub npe | Nominal Chromium Cov ntsiab lus (%) |
Nominal Molybdenum Cov ntsiab lus (%) |
| SA387 Qib 22 | 2.25% | 1.00% |
| Lub npe | Nominal Chromium Cov ntsiab lus (%) | Nominal Molybdenum Cov ntsiab lus (%) |
|---|---|---|
| A387 Qib 22 | 2.25% | 1.00% |
ASME A387 GR 22 CLASS 2 Tshuaj muaj pes tsawg leeg
| Qib | C | Mn | P | S | Si | Cr | Mo |
| A387 Gr.22 | 0.05-0.15 | 0.30-0.60 | 0.035 | 0.035 | 0.50 max | 2.00-2.50 | 0.90-1.10 |
Tensile Requirements rau ASME SA387 Qib 22 Alloy Steel Phaj Chav Kawm 2 Phaj
| Lub npe: | Yuav tsum muaj: | 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) |
1 Dab tsi welding pas nrig rau ASME SA387 Qib 22 Chav Kawm 2?
Rau vuam ASME SA387 Qib 22 Chav Kawm 2, koj xav tau qis- alloy muab tub lim hlau sib piv cov hlau hauv paus 2.25% Chromium, 1% Molybdenum muaj pes tsawg leeg, nrog rau cov kev xaiv ntau xws li E9018-B3 (SMAW), ER90S-BENSAW3 (GMAW), Tshaj tawm -Weld Heat Treatment (PWHT) zoo li kev ntxhov siab, vim tias cov Cr-Mo steel no ua rau tawg.
2 Puas yog ASME SA387 Qib 22 Qib 2 carbon steel?
Tsis yog, ASME SA387 Qib 22 Chav Kawm 2 tsis yog carbon hlau; nws yog chromium-molybdenum (Cr-}Mo) alloy steel, hom carbon alloy steel, tshwj xeeb yog tsim los rau siab - qhov kub thiab txias kev pabcuam hauv cov hlab ntsha thiab boilers vim nws txhim kho corrosion kuj thiab lub zog ntawm qhov kub siab. Thaum nws yog raws li cov pa roj carbon steel, qhov sib ntxiv ntawm chromium (nyob ib ncig ntawm 2.00-2.50%) thiab molybdenum (0.90-1.10%) ua rau nws cov qib alloy sib txawv rau kev thov kev lag luam xws li roj, roj, thiab cov nroj tsuag petrochemical.
3 Tus lej P ntawm ASME SA387 Qib 22 yog dab tsi?
Rau ASME SA387 Qib 22 alloy hlau, P-Tus lej yog P5A, vim nws yog chromium-molybdenum steel (ze li 2.25% Cr, 1% Mo) cais raws li ASME Tshooj IX rau vuam, nrog rau "A" qhia tias nws yog ferritic / ferritic pawg ntau hom nkoj steels.
4 Dab tsi yog daim ntawv thov kev ua haujlwm ntawm ASME SA387 Qib 22 Chav Kawm 2?
ASME SA387 Qib 22 Chav Kawm 2 steel yog chromium-molybdenum alloy feem ntau siv hauv cov hlab ntsha siab, boilers, thiab cov cua kub sib txawv hauv cov roj & roj, petrochemical, thiab hluav taws xob tsim kev lag luam vim nws lub zog zoo heev, ductility, thiab tsis kam mus rau kub thiab corrosion, nrog rau hauv cov roj qaub ib puag ncig. Cov ntawv thov tseem ceeb suav nrog cov reactors, kav dej, turbines, thiab lwm yam khoom siv uas xav tau kev ua tau zoo hauv qab siab siab thiab thermal stress.
5 ASME SA387 Qib 22 Chav Kawm 2 sib npaug li cas?
ASME SA387 Qib 22 Chav Kawm 2 yog sib npaug rau ASTM A387 Qib 22 Chav Kawm 2, thiab thoob ntiaj teb, nws qhov kev sib tw ze tshaj plaws yog EN 10CrMo9-10, nrog rau lwm qhov sib npaug suav nrog BS 622-515B thiab Fabkis 10mobdenlyium alloy steel 10mobdenium alloy. high-temperature siab hlab ntsha thiab boilers.
6 Dab tsi yog qhov nyuaj ntawm ASME SA387 Qib 22 Chav Kawm 2?
ASME SA387 Qib 22 Chav Kawm 2 tsis muaj qhov yuav tsum tau ua kom nruj yam tsawg kawg nkaus hauv thawj ASME / ASTM specification tab sis feem ntau ntog nyob rau hauv thaj tsam ntawm 130 txog 170 Brinell (HB) tom qab kev kho cua sov, muab lub zog tensile zoo (75-100 ksi) thiab yam tsawg kawg nkaus yield zog (45 ksi, nrog rau kev siv zog kawg ntawm cov txheej txheem siab) tempering.
ASME SA387 Qib 22 Chav Kawm 2 yog dab tsi?
ASME SA387 Qib 22 Chav Kawm 2 yog chromium-molybdenum (Cr-Mo) alloy steel phaj rau siab- qhov kub thiab txias kev pabcuam, feem ntau rau cov hlab ntsha siab thiab boilers hauv cov roj, roj, thiab tshuaj lom neeg kev lag luam, muab cov cua sov zoo heev, corrosion resistance, thiab weldability 5%. thiab kev kho cua sov (normalized & tempered) yuav tsum tau ua kom muaj zog thiab kav ntev.
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
