ASTM A387 Qib 22 Chav Kawm 2yog ib qho chromium-molybdenum alloy steel phaj tsim los rau siab - kub siab cov hlab ntsha thiab boilers, muab lub zog zoo (75-100 ksi tensile, 45 ksi min yield) thiab zoo heev tiv thaiv nkag, oxidation, thiab corrosion, ua rau nws zoo tagnrho rau cov roj, roj, thiab tshuaj lom neeg kev ua tau zoo.
Kev xav tau tshuaj
| Cov pa roj carbon (C) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.05 - 0.15 0.04 - 0.15 |
| Manganese (Mn) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.30 - 0.60 0.25 - 0.66 |
| Phosphorus (P) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.035 0.035 |
| Sulfur (S) (Max) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.035 0.035 |
| Silicon (Si) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.50 max 0.50 max |
| Chromium (Cr) | % |
| Kev Ntsuas Kub: Product Analysis: |
2.00 - 2.50 1.88 - 2.62 |
| Molybdenum (hli) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.90 - 1.10 0.85 - 1.15 |
Mechanical Property
|
Qib |
A387 Gr.22 CL.2Mechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
A387 Gr.22 Cl.2 |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
t Tsawg dua lossis sib npaug li 50 |
310 |
515-690 |
18 |
|
|
50<> |
- |
- |
- |
|
daim ntawv thov
Kev lag luam roj thiab roj
Cov cuab yeej kho kom zoo: Nws yog dav siv los ua cov khoom tseem ceeb xws li hydrotreating reactors thiab desulfurization units hauv refineries. Cov Cheebtsam no tuaj yeem tiv taus qhov corrosion ntawm hydrogen sulfide thaum ua cov roj av qaub thiab tswj kev ruaj ntseg hauv siab. Nws kuj tseem ua haujlwm hauv cov khoom siv roj av xws li cov roj tso tsheb hlau luam thiab siab - cov kav dej.
Natural gas processing and storage: Nws tsim nyog rau cov khoom siv roj qaub thaum lub sij hawm tshem tawm roj. Tsis tas li ntawd, nws tuaj yeem siv los tsim cov tank cia rau roj thiab roj. Cov tso tsheb hlau luam no yuav tsum tau tiv thaiv corrosion ntawm corrosive gases nyob rau hauv cov txheej txheem ntawm cov roj thiab roj cia thiab xyuas kom muaj kev ruaj ntseg cia ntawm cov roj thiab roj.
Petrochemical thiab Coal Chemical Kev Lag Luam
Petrochemical reactors: Nws yog siv los tsim cov reactors rau polymerization, alkylation thiab lwm yam tshuaj tiv thaiv. Cov reactors no feem ntau ua haujlwm nyob rau hauv ib puag ncig hnyav nrog kev kub siab, siab siab thiab corrosive media, thiab cov khoom siv ua haujlwm tuaj yeem ua tau raws li cov kev xav tau ntawm cov reactors.
Coal chemical core cov cuab yeej: Hauv cov thee - rau - syngas thiab thee - rau - cov txheej txheem methanol, nws yog siv los ua cov plhaub ntawm cov roj gasifiers thiab methanol synthesis towers. Cov khoom siv no ntsib qhov kub thiab txias ntawm 400 - 550 degree, siab siab, nrog rau kev yaig los ntawm cov xov xwm nyuaj xws li H₂ thiab CO, thiab cov phaj hlau no tuaj yeem tswj cov qauv kev ruaj ntseg hauv ib puag ncig zoo li no.
Kev lag luam tsim hluav taws xob
Thermal fais fab nroj tsuag: Nws yog ib qho tseem ceeb rau thermal hwj chim boiler Cheebtsam, xws li boiler nruas, headers thiab siab - kub chav kis pipelines, uas yuav tsum tau dais kub siab tshaj 500℃thiab drastic siab hloov. Tsis tas li ntawd, nws tuaj yeem siv rau turbine casings hauv kev sib xyaw ua ke - voj voog fais fab nroj tsuag.
Nuclear fais fab nroj tsuag: Nws yog siv rau lub siab ntawm cov hlab ntsha nyob rau hauv nruab nrab - qhov kub thiab txias seem ntawm nuclear fais fab nroj tsuag, xws li lub siab - bearing qauv muaj feem xyuam rau cov cua kub pauv nyob rau hauv lub auxiliary systems ntawm nuclear reactors. Nws cov khoom siv kho tshuab ruaj khov tuaj yeem txo qhov kev pheej hmoo ntawm cov khoom siv tsis ua haujlwm.
General Boiler thiab Heat Exchanger Field
Nws yog siv los ua kom siab - bearing Cheebtsam rau ntau yam muaj boilers, uas muaj peev xwm tiv taus thermal qaug zog thiab corrosion tshwm sim los ntawm ntev - lub sij hawm siab - kub combustion.
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.
Dab tsi ntawm cov hlau yog ASTM A387 Qib 22 Chav Kawm 2, thiab nws cov ntsiab lus alloying yog dab tsi?
ASTM A387 Qib 22 Chav Kawm 2 yog chromium-molybdenum alloy tshav kub-resistant steel phaj, belongs rau qeb ntawm qis- alloy siab- lub zog steel. Nws cov ntsiab lus alloying suav nrog kwv yees li 2.25% chromium (Cr) thiab 1.0% molybdenum (Mo), ntxiv los ntawm cov ntsiab lus tseem ceeb xws li carbon, manganese, thiab silicon. Qhov sib piv alloy endows nws nrog zoo heev -kub txhua yam khoom thiab corrosion kuj.
Dab tsi yog qhov txawv ntawm ASTM A387 Qib 22 Chav Kawm 2 thiab Chav Kawm 1?
Qhov tseem ceeb sib txawv ntawm ob yog nyob rau hauv cov cuab yeej cuab tam thiab cov txheej txheem kho cua sov. Chav Kawm 2 yuav tsum muaj zog tensile ntau dua, lub zog tawm los, thiab cuam tshuam rau lub zog, thiab feem ntau raug rau normalizing + tempering tshav kub kho kom ntseeg tau cov qauv ruaj khov ntawm cov khoom nyob rau hauv qhov kub thiab txias. Hauv qhov sib piv, Chav Kawm 1 muaj qhov ntsuas cov cuab yeej cuab yeej qis dua, thiab nws cov txheej txheem kho cua sov tuaj yeem hloov kho raws li qhov xav tau tiag tiag, nrog rau cov ntawv thov uas tsis tshua muaj hnyav dua li cov chav kawm 2.