SA 387 Qib 22 Chav Kawm 1 yog chromium-molybdenum alloy steel phaj them los ntawm ASME Boiler thiab Pressure Vessel Code. Nws yog dav siv rau siab- khaws cov cuab yeej uas ua haujlwm ntawm qhov kub thiab txias, xws li cov hlab ntsha siab, boilers, kub exchangers, thiab kav dej hauv refineries, petrochemical nroj tsuag, thiab cov chaw tsim hluav taws xob. Cov hlau tau txais nws qhov siab - kub lub zog, nkag mus, thiab oxidation tsis kam los ntawm nws ua tib zoo sib npaug chromium thiab molybdenum cov ntsiab lus, thaum nws cov qib qis carbon ua kom zoo weldability. Chav Kawm 1 txhais tau hais tias cov khoom yuav tsum tau soj ntsuam nruj dua ultrasonic kom ntseeg tau tias qib siab ntawm cov suab nrov sab hauv, ua rau nws tsim nyog rau cov ntawv thov tseem ceeb uas muaj kev ntseeg siab thiab ua rau lub siab kub nyhiab yog qhov tseem ceeb.
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 |
|
Qib |
SA387 Gr.22 CL.1Mechanical Property |
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|
Thickness |
Yield |
Tensile |
Elongation |
|
|
SA387 Gr.22 Cl.1 |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
t Tsawg dua lossis sib npaug li 50 |
205 |
415-585 |
18 |
|
|
50<> |
- |
- |
- |
|
Txheej Txheem Flow
Smelting thiab Composition Control:
Cov hlau yog melted nyob rau hauv ib tug hluav taws xob arc rauv thiab refined nyob rau hauv ib tug ladle rauv, nrog nruj tswj ntawm carbon, silicon, manganese, phosphorus, sulfur, thiab cov tseem ceeb alloying ntsiab chromium thiab molybdenum. Cov ntsiab lus ntawm cov pa roj carbon monoxide yog khaws cia tsis tshua muaj los txhim kho weldability thaum ua kom muaj qhov sib npaug ntawm chromium thiab molybdenum, uas yog qhov tseem ceeb rau siab - qhov kub thiab txias tsis kam.
Kev tsim thiab Rolling:
Lub steel billet yog rhuab mus rau qhov tsim nyog dov kub thiab ces dov rau hauv daim hlau ntawm qhov yuav tsum tau thickness. Cov txheej txheem no refines cov qauv nplej thiab ua kom cov khoom sib xws ntawm cov phaj.
Kev kho cua sov (tom qab ua haujlwm kub):
Normalizing: Lub phaj yog rhuab mus rau lub austenitizing kub thiab huab cua-cooled kom homogenize lub microstructure, txo cov kev ntxhov siab nyob rau hauv, thiab ua tau ib tug nplua -grained pearlite thiab ferrite qauv.
Tempering: Ua tom qab normalizing (los yog quenching), cov kauj ruam no ntxiv kho hardness thiab toughness, stabilizes lub microstructure, thiab xyuas kom meej cov khoom raws li qhov yuav tsum tau txhua yam khoom rau siab - kub kev pab cuam.
Kev Tshawb Fawb thiab Kev Xeem:
Tsis yog-kev kuaj kev puas tsuaj, suav nrog kev kuaj ultrasonic thiab kev kuaj cov hlau nplaum, yog ua los xyuas qhov tsis xws luag sab hauv thiab saum npoo. Kev ntsuam xyuas tshuab xws li tensile, impact, and hardness tests, nrog rau tshuaj ntsuam xyuas, yog ua los xyuas kom meej raws li ASME SA 387 Qib 22 Chav Kawm 1 tus qauv.
Cov yam ntxwv tseem ceeb (Influenced by Process):
Cov chromium-molybdenum alloy muab kev ua tau zoo heev - kub lub zog thiab oxidation kuj. Cov ntsiab lus carbon tsawg txhim kho weldability, thaum lub normalizing thiab tempering tshav kub kho optimizes microstructure, kom ntseeg tau zoo siab -kub kev ua tau zoo thiab tsis kam mus rau hydrogen nres, raws li zoo raws li tswj tshav kub- cuam tshuam cheeb tsam embrittlement.
Application Scenario:
SA 387 Qib 22 Chav Kawm 1 yog dav siv hauv kev lag luam petrochemical thiab roj refining rau cov khoom xws li hydrogenation reactors, siab -kub piping, thiab cov hlab ntsha siab, qhov kev ua tau zoo ntawm qhov kub thiab txias yog qhov tseem ceeb.
Qhov zoo:
High -Tsub Ua Haujlwm:
Tsim los rau qhov kub thiab txias, tiv thaiv kev nkag thiab tswj lub zog qhov twg carbon steels tsis muaj zog.
Corrosion & Oxidation Resistance:
Chromium thiab molybdenum cov ntsiab lus muab kev tiv thaiv muaj zog tiv thaiv oxidation thiab corrosive kev lag luam ib puag ncig, nrog rau cov roj qaub (H₂S).
Enhanced zog & Toughness:
Muab kev txhim kho tensile lub zog thiab ductility piv rau cov pa carbon steels, nrog zoo hardness thiab toughness.
Weldability:
Zoo weldability, txawm nyob rau ntawm qhov kub thiab txias, tso cai rau fabrication ntawm complex khoom siv.
Daim ntawv thov Versatility:
Siv rau hauv cov khoom tseem ceeb rau roj & roj, lub zog tsim hluav taws xob (boilers, steam generators), thiab kev ua tshuaj lom neeg.
Yog tias koj xav paub ntxiv txog (SA 387 Qib 22 Chav Kawm 1) GNEE cov khoom, koj tuaj yeem xa email rau beam@gneesteelgroup.com. Peb zoo siab tshaj los pab koj.
Dab tsi yog cov ntsiab lus alloying?
Cov ntsiab lus tseem ceeb alloying yog chromium thiab molybdenum. Chromium txhim kho oxidation tsis kam thiab siab - kub lub zog, thaum molybdenum txhim khu kev nkag siab thiab muab kev ruaj ntseg nyob rau hauv ntev - lub sij hawm thermal loading. Cov ntsiab lus no ua haujlwm ua ke kom ntseeg tau tias cov hlau tuaj yeem tiv taus qhov kub thiab txias yam tsis muaj degradation tseem ceeb. Lwm cov ntsiab lus xws li carbon, manganese, thiab silicon kuj tau ua tib zoo tswj kom tswj tau qhov weldability thiab mechanical zog.
"Class 1" txhais li cas?
"Class 1" qhia tias cov hlau phaj yuav tsum tau mus rau qib siab dua ntawm kev kuaj ultrasonic (UT) piv rau Chav Kawm 2. Qhov kev soj ntsuam nruj dua no ua kom cov khoom muaj qhov tsis xws luag sab hauv xws li laminations, suav nrog, lossis voids. Lub hom phiaj yog los muab cov khoom siv txhim khu kev qha ntau dua rau kev siv cov hlab ntsha tseem ceeb uas qhov kev ncaj ncees yog qhov tseem ceeb. Cov phaj uas tsis ua raws li cov qauv 1 yuav raug muab faib ua Chav Kawm 2 yog tias lawv ua tau raws li qhov yuav tsum tau ua kom qis dua.
SA 387 GR 22 khoom yog dab tsi?
Lub SA 387 Qib 22 Steel yog lub nkoj siab steel ua los ntawm cov khoom siv raw khoom zoo thiab cov cuab yeej siv siab. Feem ntau siv rau kev ua haujlwm siab - qhov kub thiab txias raws li nws lub siab ua haujlwm siab, lub phaj hlau no tuaj yeem raug mus txog 600℃thaum tuav cov oxidation zoo thiab corrosion kuj.
Qhov kev pabcuam siab tshaj plaws yog dab tsi?
SA 387 Gr.22 Cl 1 feem ntau yog siv rau hauv kev pabcuam kub txog li 593℃(1100℃F). Txawm li cas los xij, qhov ntsuas kub siab tshaj plaws nyob ntawm cov yam ntxwv xws li kev tsim qauv, qib kev ntxhov siab, qhov xav tau nkag siab, thiab qhov muaj qhov corrosive ib puag ncig. Rau ntev - daim ntawv thov nkag mus ntev, cov neeg tsim qauv feem ntau siv qhov kub thiab txias kom ntseeg tau tias muaj kev nyab xeeb thiab ua haujlwm ntev ntawm cov cuab yeej siv lub neej.
Yuav ua li cas welded?
SA 387 Gr.22 Cl 1 tuaj yeem welded siv cov txheej txheem xws li SMAW (stick), GMAW (MIG), FCAW, thiab SAW. Kev xaiv ntawm cov hlau muab tub lim yog qhov tseem ceeb thiab feem ntau suav nrog kev sib txuam Cr-Mo compositions, xws li E8018-B2 lossis ER80S-B2. Preheating thiab post-weld heat treatment (PWHT) yog qhov tseem ceeb los tiv thaiv kev sib tsoo txias thiab ua kom cov khoom siv zoo nyob hauv thaj chaw muaj kev kub ntxhov (HAZ).
Dab tsi yog SA 387 khoom sib npaug?
Sa 387 Gr 11 Equivalent Materials yog ASME SA387 hauv Asmeskas kev lag luam nrog European Union muaj cov qauv hauv qib 13CrMoSi5-5. Sa 387 Gr 11 Cl 2 Equivalent Materials yog SA387-11-2 ntawm ASME thiab ASTM tus qauv.
SA 387 Gr.22 Cl 1 piv rau carbon steel daim hlau li cas?
Tsis zoo li cov qauv carbon steels, SA 387 Gr.22 Cl 1 muaj chromium thiab molybdenum, uas txhim kho nws qhov siab - kub lub zog, creep resistance, thiab tsis kam mus rau temper embrittlement. Carbon steels soften thiab poob lub zog ntawm qhov kub siab, ua rau lawv tsis haum rau ntau lub nkoj siab thiab boiler daim ntawv thov qhov twg Gr.22 excels.
SA 387 Gr.22 Cl 1 piv rau SA 387 Gr.22 Cl 2 li cas?
Ob qib muaj tib cov tshuaj muaj pes tsawg leeg, tab sis Chav Kawm 1 yuav tsum muaj kev ntsuam xyuas ultrasonic nruj dua rau lub suab sab hauv. Chav Kawm 2 tso cai me ntsis ntxiv sab hauv. Chav Kawm 1 yog qhov zoo dua rau cov ntawv thov tseem ceeb uas qhov tsis ua haujlwm tuaj yeem ua rau muaj qhov tshwm sim loj, thaum Chav Kawm 2 yog siv thaum qib tshuaj xyuas qis dua.