Txheej txheem cej luam & Daim ntawv thov tseem ceeb
ASTM A333yog tus qauv kev tshwj xeeb rauSeamless thiab welded steel yeeb nkab rau tsawg - kev pabcuam kub.
Qeb 6tshwj xeeb yog hais txog cov kav dej ua los ntawmCov Hlau Hlauuas tauzoo li casYuav kom ua tiav cov khoom siv tsim nyog rau kev tawv ntawm qhov kub tsawg.
Lub hom phiaj tseem ceeb ntawm A333 Gr.6 yog thauj cov kua dej thiab roj av nyob rau ib puag ncig uas cov hlau ntsuas tuaj yeem poob qis theem qis. Lawv cov ntawv tshaj tawm tshaj plaws nyob hauvUa kua Nitrogen (Lin)thiabCov kua pa oxygen (LEX)kev pabcuam.
Cov yam ntxwv tseem ceeb
1. Tshuaj lom neeg sib xyaw
Cov tshuaj lom neeg muaj tshuaj lom zem yog tswj kom nruj kom ntseeg tau zoo weldability thiab tsawg - kub nruj. Cov ntsiab lus tseem ceeb rau qib 6 yog:
Cov pa roj carbon (c):0.30% max
Manganese (MN): 0.29 - 1.06%
Phosphorus (p):0.025% max
Sulphur (s):0.025% max
Silicon (si):0.10% min (ntxiv ua deoxidizer, ua rau cov hlau "tua")
2. Cov Khoom Siv Neeg Kho Tshuab
Qhov no yog qhov tseem ceeb tshaj plaws rau qis - kev pab kub.
| Ntiag tug | Qhov yuav tsum tau ua rau qeb 6 |
|---|---|
| Lub zog tensile | 60 KSI (415 MPA) min |
| Paib lub zog | 35 Ksi (240 MPa) min |
| Elongation | Sib txawv nrog phab ntsa thickness, raws li muaj tus qauv mis. |
| Kev Cuam Tshuam Kev Ntsuas (Charpy V - ItCH) | Nov yog kev txhais tau tias yuav tsum tau ua. |
| Kev Cuam Tshuam Sim Kub | -50 Qib F (-45 degree) |
| Yam tsawg kawg AVG. Kev Cuam Tshuam Lub Zog | 13 ft - lbf (18 j)rau txhua qhov hnoos qeev. |
Vim li cas kev cuam tshuam kev xeem teeb meem:Qhov Kev Ntsuas Charpy Feem Cuam Tshuam Kev Ntsuas Cov Yeeb Nkab Lub Peev Xwm Txiaj Ntsig Zog thiab Tiv Thaiv Kev Txom Nyem ntawm lub ntsej muag. Ntawm qhov kub tsawg, carbon hlau tuaj yeem ua tau tawg. Kev Kho Mob Cua Sov ntawm A333 Gr.6 Rov qab cov qauv grain, kom ntseeg tau tias nws tseem nyuaj thiab ductile txawm nyob rau ntawm -50℃F.
3. Kev kho cua sov
A333 Qib 6 kavyuav tsum yog ua li qubCov. Li qub yog ib txoj kev kho cua sov uas cuam tshuam nrog cua sov cov hlau mus rau qhov kub thiab txias (saum toj nws qhov tseem ceeb) thiab tom qab ntawd cia nws txias rau hauv cov huab cua tseem. Tus txheej txheem no:
Rov ua cov qauv grain.
Txhim kho kev nruj thiab ductility.
Tsim cov teeb tsa ntau dua microstration microstructure.
4. Kev Tsim Kho Cov Txheej Txheem
Thaum A333 cov lus qhia tshwj xeeb npog ob leeg ua tsis tau thiab welded (ERW) yeeb nkab,Qeb 6 feem ntau yog cov feem ntau muab rau hauv lub seamless (sms) ua khoomrau cov ntawv thov tseem ceeb. Cov txheej txheem seamless cuam tshuam nrog cov khoom ntim khoom uas tsis muaj Weld Seam, kom muaj kev sib dhos zoo nkauj thiab kev sib dhos.
Cov kev qhia tshwj xeeb thiab qhov ntev
Txheem Qhov Dimension:A333 Gr.6 kav yog tsim mus rau lub qauv seem ntawmASTM A530, uas hais txog qhov loj me thiab phab ntsa thickness cov sij hawm los ntawmASME B36.10M(piv txwv li, nps 1/8 "rau Nps 48").
Ntau qhov ntau thiab tsawg:Muaj nyob rau hauv ntau qhov ntau thiab tsawg, los ntawm me - bore tubing (piv txwv li 1/2 ") rau loj} txoj kab uas hla (piv txwv li, 24").
Ntsuas Siab:Lub siab ntsuas tsis tau txhais los ntawm A3333 tus qauv nws tus kheej. Nws yog suav raws cov yeeb nkab qhov ntev, cov khoom siv tau cog lub zog, thiab qhov tsim qauv, feem ntau yog siv cov qauv zoo liASME B31.3Rau cov txheej txheem piping.
Kev sib piv nrog lwm qib
Nws yog qhov pab tau los sib piv A333 Gr.6 mus rau lwm qhov qis qis- kub thiab carbon cov menyuam kawm.
| Yam zoo | ASTM A333 Gr.6 | ASTM A106 GR.B(High - Temp Service) | ASTM A333 GR.3(Qis dua temp) |
|---|---|---|---|
| Thawj siv | Tsawg - kev pab kub | High - kev pab kub | TiagTsawg - kev pab kub |
| Ntsuam xyuas temp. | -50 Qib F (-45 degree) | Tsis tas yuav tsum (Chav ua vaj)) | -150 Qib F (-100 Qib) |
| Min. Pub | 35 ksi (240 MPA) | 35 ksi (240 MPA) | 35 ksi (240 MPA) |
| Kev ua tshuaj | Carbon Steel (Li Qub) | Carbon Steel (tej zaum yuav yog li qub) | Nickel Steel(3.5% ni) |
| Qhov tseem ceeb sib txawv | Toughness ntawm -50 Qib F | Lub zog ntawm cov temps | Toughness ntawm -150 Qib F |
Nco tseg:A333 Gr.6 feem ntau suav tias yog qhov qis- kub sib npaug ntawmA106 GR.BlossisA53 Gr.b, tab sis nrog cov neeg yuav tsum xeem thiab ua haujlwm li cas.
Cov Kev Siv Raug Raug
A333 Gr.6 Seamless kav yog siv cov khoom siv thiab cov twj piping tau nthuav tawm rau sub- xoom} xoom} xoom}
Cryogenic Industries:Piping rau liquefied gases zoo linitrogen, oxygen, argon, thiab ntuj nkev (lng).
Lub Tshuab Tub Yees:Nyob rau hauv loj - teev cov khoom siv tub yees tub yees.
Tshuaj lom neeg thiab cov nroj tsuag petrochemical:Txog kev ua cov chav ua haujlwm uas ua haujlwm ntawm cov khoom kub qis.
Lub zog tiam:Hauv tej ntu ntawm cov nroj tsuag fais fab.
Lub ntsiab
Nyob rau hauv essence,ASTM A333 Qib 6 Seamless Hlau Yeeb Nkabyog cov yeeb nkab steel-50 Qib F (-45 degree)Cov. Nws yuav tsum them txoj kev cuam tshuam ua haujlwm thiab kev kho cua sov yog dab tsi uas muab tso rau ntawm cov qauv hlau steel, ua rau kev xaiv zoo thiab txhim khu kev qha.
