Dab tsi yog qhov txawv ntawm ASME SA537 Chav Kawm 1 thiab Chav Kawm 2?
Thawj qhov sib txawv ntawm ASME SA537 Chav Kawm 1thiab Chav Kawm 2yog lawv cov kev kho cua sov thiab ua rau cov neeg kho tshuab muaj zog: Class 1 yognormalizednrog qis tensile zog (70--90 ksi), hos Class 2 yogquenched thiab tempered, muab siab zog tensile (80--100 ksi) rau kev thov cov hlab ntsha siab.
ASME SA537 Chav Kawm 1 yog qhov siab - tawm los, cov pa roj carbon zoo li qub uas muab qhov sib npaug zoo ntawm lub zog thiab weldability rau hnyav- phab ntsa tsim. Nws yog ib feem ntawm tsev neeg steels (xws li Chav Kawm 2 thiab 3) tab sis tseem yog qhov nrov tshaj plaws vim qhov yooj yim ntawm nws cov kev kho cua sov-normalization- uas muab kev ntseeg siab yam tsis muaj qhov nyuaj ntawm cov kua quenching. Rau tus neeg tsim khoom, SA537 Chav Kawm 1 muaj cov khoom siv "kev nyab xeeb" uas tswj cov kev ntxhov siab ntawm dov, vuam, thiab kev ntsuas hydrostatic nrog tsawg kawg ntawm kev tawg lossis lamination.
Cov yam ntxwv tseem ceeb
High Yield Strength:Yam tsawg kawg nkaus345 MPa rauua rau nws haum rau niaj hnub siab -siab tsim.
Tsawg Txias -Cracking Risk:Favorable carbon equivalent (CE) qhov tseem ceeb rau kev ua haujlwm vuam.
Kev sib raug zoo:Normalizing kom ntseeg tau tias cov khoom sib xws ntawm qhov chaw mus rau qhov tseem ceeb ntawm lub phaj.
Muaj:Tshaj tawm los ntawm thoob ntiaj teb cov chaw pabcuam steel hauv ntau qhov tuab.
Qib Qib
"SA":ASME Tshooj II tus lej rau cov khoom siv Ferrous.
"537":Cov khoom tshwj xeeb tshwj xeeb rau "Pressure Vessel Phaj, Kub-Kho, Carbon-Manganese-Silicon Steel."
"Class 1":Qhia tias cov khoom tau uaLi qub.
UNS Number: K02400.
Kev sib piv (vs. European Qib P355NL1)
Kev Ua Raws Cai:SA537 yog qib ASME / ASTM; P355NL1 yog European EN 10028 qib.
Impact Testing:Ob leeg raug sim rau qhov kub thiab txias, tab sis SA537 ua raws li cov cai sib txawv.
Tensile Range:SA537 Cl. 1 (70--90 ksi) muaj qhov dav tensile ntau dua P355.
Tus nqi tsim:Cov qib kev ntxhov siab tso cai sib txawv me ntsis ntawm ASME thiab EN cov lej tsim.
Cov ntawv thov siv
Ammonia Cia Tank:Rau kev ua liaj ua teb thiab kev lag luam chemical siv.
Siab -Sib zog sib cais:Siv hauv roj-gas- sib cais dej ntawm lub qhov dej.
Nuclear Secondary Containment:Cov qauv phaj rau qhov sib npaug - ntawm - cov khoom cog.
Thermal Power Cheebtsam:Tsis yog -rhaub seem ntawm loj- nplai chav boilers.
Lub hardness ntawm ASME SA537 Class 1 yog dab tsi?
Lub hardness ntawm ASME SA537 Chav Kawm 1 feem ntau yog nyob ib ncig ntawm 200 HB (Brinell hardness). Qhov hardness no ua kom cov khoom siv tau ruaj khov thiab tiv taus hnav thaum tuav qhov tsim nyog ductility thiab toughness kom tiv taus siab -siab thiab qis- qhov kub thiab txias. Cov qib hardness ua rau muaj qhov sib npaug ntawm lub zog thiab lub zog, kom ntseeg tau tias cov khoom tuaj yeem tiv taus cov neeg kho tshuab kev ntxhov siab yam tsis muaj nkig.
Lub zog tensile ntawm ASME SA537 Chav Kawm 1 yog dab tsi?
Lub zog tensile ntawm ASME SA537 Chav Kawm 1 feem ntau nyob ntawm 70 ksi (485 MPa) txog 90 ksi (620 MPa). Lub zog tensile siab no tso cai rau cov khoom siv los tiv thaiv cov kev ntxhov siab tseem ceeb, ua rau nws zoo tagnrho rau kev siv hauv siab -siab tshuab. Cov khoom khaws cia nws lub zog txawm tias nyob rau hauv qhov kub thiab txias, uas yog qhov tseem ceeb rau kev siv xws li cov hlab ntsha siab thiab cov reactors uas ua haujlwm nyob rau hauv ib puag ncig nyuaj.
Dab tsi yog qhov kev kho cua sov xav tau rau ASME SA537 Chav Kawm 1?
ASME SA537 Class 1 steel tau dhau los ua cov txheej txheem kho cua sov uas suav nrog quenching thiab tempering. Cov hlau yog rhuab mus rau qhov kub thiab txias, ceev ceev (quenched), thiab ces tempered ntawm ib tug qis kub. Cov txheej txheem no txhim kho cov khoom siv lub zog, lub zog, thiab kev tiv thaiv rau cov pob txha tawg, ua rau nws tsim nyog rau kev siv hauv kev xav tau ntawm cov hlab ntsha siab, qhov twg cov khoom yuav tsum tswj nws txoj kev ncaj ncees nyob rau hauv siab thiab kub tej yam kev mob.
|
Element |
Kev Ntsuas Kub |
Kev tshuaj xyuas khoom |
|---|---|---|
|
Cov pa roj carbon, max |
0.24 |
|
|
Manganese (Tk Tsawg dua lossis sib npaug li 40 mm lossis 1-1/2 nyob rau hauv) |
0.70-1.35 |
0.64-1.46 |
|
Manganese |
1.00-1.60 |
0.92-1.72 |
|
Phosphorus, max |
0.025 |
|
|
Sulfur, max |
0.025 |
|
|
Silicon |
0.15-0.50 |
0.13-0.55 |
|
Tooj, max |
0.35 |
0.38 |
|
Nickel, max |
0.25 |
0.28 |
|
Chromium, max |
0.25 |
0.29 |
|
Molybdenum, max |
0.08 |
0.09 |
|
Mechanical Properties nti thiab [mm] |
Chav Kawm 1 |
|---|---|
|
Ksi [MPa] |
|
|
Tensile zog |
|
|
2-1/2 nyob rau hauv |
70-90 |
|
[65 hli thiab qis dua] |
[485-620] |
|
Tshaj 2-1/2 rau 4 nti |
65-85 |
|
[Tshaj 65 txog 100mm] |
[450-585] |
|
Yield zog, min: |
|
|
2-1/2 nyob rau hauv |
50 |
|
[65 hli thiab qis dua] |
[345] |
|
Tshaj 2-1/2 rau 4 nti |
45 |
|
[Ntau 65-100 mm] |
[310] |
|
Elongation hauv 2 hauv |
|
|
[50 mm], min, %B |
22 |
|
Elongation hauv 8 hauv |
|
|
[200 mm], min, %B |
18 |
1. Dab tsi kev lag luam cia siab rau ASME SA537 Chav Kawm 1?
ASME SA537 Chav Kawm 1 feem ntau yog siv hauv kev lag luam xws li roj thiab roj, kev ua tshuaj lom neeg, petrochemical, thiab kev tsim hluav taws xob. Nws yog ib qho tseem ceeb tshwj xeeb rau kev tsim cov hlab ntsha siab, reactors, thiab cov khoom siv hluav taws xob uas yuav tsum tau ua nyob rau hauv qhov kub thiab txias. Nws muaj zog toughness, tsis kam rau nkig tawg, thiab weldability zoo ua rau nws zoo tagnrho rau kev lag luam uas xav tau cov ntaub ntawv ruaj khov thiab txhim khu kev qha hauv cov ntawv thov tseem ceeb.
2. Dab tsi yog qhov elongation ntawm ASME SA537 Chav Kawm 1?
Qhov elongation ntawm ASME SA537 Chav Kawm 1 feem ntau yog tsawg kawg yog 18% hauv 8 ntiv tes (200 hli). Cov cuab yeej no qhia txog cov khoom muaj peev xwm ua rau cov yas deformation yam tsis muaj kev tawg. High elongation yog qhov tseem ceeb rau cov hlab ntsha siab thiab lwm yam tseem ceeb, qhov chaw uas cov khoom yuav muaj kev ntxhov siab tam sim ntawd los yog siab heev, ua kom cov hlau tuaj yeem nqus tau lub zog yam tsis muaj kev poob lossis tawg.
3. Dab tsi yog cov ntsiab lus sulfur hauv ASME SA537 Chav Kawm 1?
Cov ntsiab lus sulfur hauv ASME SA537 Chav Kawm 1 kuj raug txwv rau qhov siab tshaj plaws ntawm 0.035%. Sulfur tuaj yeem txo cov khoom siv tawv, ua rau nws yooj yim dua rau kev tawg thaum muaj kev ntxhov siab, tshwj xeeb tshaj yog thaum kub qis. Los ntawm kev ua kom cov ntsiab lus sulfur tsawg, ASME SA537 Chav Kawm 1 khaws nws qhov zoo tshaj plaws toughness thiab tsis kam rau nkig tawg, uas yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb thiab kav ntev ntawm cov hlab ntsha thiab lwm yam tseem ceeb.
4. Dab tsi yog cov ntsiab lus ntawm manganese hauv ASME SA537 Chav Kawm 1?
Cov ntsiab lus manganese hauv ASME SA537 Chav Kawm 1 feem ntau yog li ntawm 0.60% txog 1.35%. Manganese yog ib qho tseem ceeb alloying ntsiab uas ua rau cov hlau muaj zog thiab toughness. Nws txhim kho cov khoom siv tiv thaiv kev hnav thiab tawg, ua kom cov hlau ua tau zoo nyob rau hauv siab -siab thiab qis- qhov kub thiab txias, xws li cov pom nyob rau hauv cov hlab ntsha siab, reactors, thiab tshav kub exchangers.
5. Dab tsi yog cov ntsiab lus phosphorus hauv ASME SA537 Chav Kawm 1?
Cov ntsiab lus phosphorus hauv ASME SA537 Chav Kawm 1 yog txwv rau qhov siab tshaj plaws ntawm 0.035%. Phosphorus tuaj yeem ua rau brittleness, tshwj xeeb tshaj yog nyob rau hauv qis - qhov kub thiab txias ib puag ncig, thiab cuam tshuam rau cov hlau lub toughness. Los ntawm kev tswj hwm qib phosphorus, ASME SA537 Chav Kawm 1 ua kom cov khoom khaws cia nws lub zog thiab ua haujlwm rau cov pob txha tawg, ua rau nws tsim nyog rau siab - kev ntxhov siab, qis - kub daim ntawv thov xws li cov hlab ntsha siab thiab cov reactors.
6. Cov ntsiab lus carbon hauv ASME SA537 Class 1 yog dab tsi?
Cov ntsiab lus carbon hauv ASME SA537 Class 1 feem ntau yog li ntawm 0.12% txog 0.20%. Cov ntsiab lus qis carbon no pab txhim kho cov khoom siv weldability, txo qhov kev pheej hmoo ntawm kev tawg thaum lub sij hawm vuam txheej txheem. Txawm hais tias cov ntsiab lus tsis tshua muaj carbon tsawg, cov hlau tseem khaws cia muaj zog txaus thiab tawv, ua rau nws tsim nyog rau cov ntawv thov hauv siab - siab thiab qis - qhov kub thiab txias ib puag ncig xws li cov hlab ntsha thiab cov khoom siv hluav taws xob.
7. Lub zog tawm los ntawm ASME SA537 Chav Kawm 1 yog dab tsi?
Lub zog tawm los ntawm ASME SA537 Chav Kawm 1 feem ntau yog nyob ib puag ncig 50 ksi (345 MPa). Qhov no yog lub ntsiab lus uas cov hlau pib deform plastically nyob rau hauv kev ntxhov siab. Qhov kev tawm dag zog no ua kom ntseeg tau tias cov khoom siv tuaj yeem nqa tau ntau yam tsis muaj deformation mus tas li, ua rau nws tsim nyog rau cov ntawv thov tseem ceeb hauv cov hlab ntsha siab, qhov kev ncaj ncees ntawm cov txheej txheem yuav tsum tau khaws cia nyob rau hauv kev kub ntxhov thiab kev ntxhov siab.
Tau txais cov lus muaj nuj nqis rau ASME SA537 Chav Kawm 1, Hu rau GNEE Steel
