Lub ntsiab
Sa-209 t1ayog qhov tshwj xeeb rau seamless nruab nrab- carbon alonoy {}}}}} cov leeg roj hmab boiler thiab superheater leeg, txhais los ntawmASTM A209 / ASME SA-209Txheem. Qhov "T1A" tsim yog hais txog ib qho tshuaj lom neeg muaj kuab lom thiab cov kws kho tshuab siv tshuab ua kom haum rau siab- kev pab kub.
Cov kav dej no feem ntau siv hauv kev tsim kho boilers, superheaters, thiab tshav kub sib pauv hauv lub hwj chim tiam thiab lwmy {0} {} {} {} {} {} {} {}}} {siab {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {montan cov ntawv thov muaj.
Cov yam ntxwv tseem ceeb
1. Tshuaj lom neeg sib xyaw
Lub "T1A" qib muaj cov kws tshawb fawb tshwj xeeb uas muab nws nws cov khoom. Cov ntsiab lus tseem ceeb yog:
| Lub ntsiab | Muaj pes tsawg leeg (%) |
|---|---|
| Carbon (c) | 0.15 - 0.25 |
| Manganese (mn) | 0.30 - 0.80 |
| Phosphorus (p) | 0.025 max |
| Sulphur (s) | 0.025 max |
| Silicon (si) | 0.10 - 0.50 |
| Molybdenum (mo) | 0.44 - 0.65 |
Tus ntse tseem ceeb yog Molybdenum (MO):Qhov kev sib ntxiv ntawm molybdenum tseem nce lub zog ntawm cov hlau ntawm lub ntsuas kub thiab txhim kho kom tsis muaj kev ntxhov siab thaum muaj kev ntxhov siab ntau dua).
2. Cov Khoom Siv Neeg Kho Tshuab
Cov kav dej yog cua sov - nrhiav (feem ntau yog li qub thiab tempered) kom ua tiav cov khoom siv hauv qab no:
| Ntiag tug | Tus nqi |
|---|---|
| Lub zog tensile | 415 MPa (60,000 psi) min |
| Paib lub zog | 240 MPa (35,000 PSI) min |
| Elongation | 30% min (hauv 2 nti) |
3. Kev Tsim Kho Txheej Txheem
Seamless:Raws li lub npe cuam tshuam, cov kav dej no yog tsim kom tsis muaj rooj zaum welded. Qhov no feem ntau ua tiav los ntawm tho ib lub nplua nuj ntawm cov hlau los tsim lub plhaub khoob, uas yog elongated thiab dov mus rau qhov loj me me. Kev tsim kho vaj ntxwv muab:
Kev sib txuam muaj zog nyob ib ncig ntawm txhua qhov chaw ncig.
Zoo dua tsis kam mus rau kev kub siab.
Tsis muaj kev pheej hmoo ntawm cov leeg ntawm cov leeg ua tsis tiav, uas yog qhov tseem ceeb hauv qhov siab - kev siv ntxhov siab.
Cov Ntawv Thov
Sa-209 t1a kav yog tsim rauhigh - kub thiab siab - qhov kev pab cuam siabCov. Lawv cov ntawv thov feem ntau suav nrog:
Superheater leeg:Cov no yog cov ntu uas cov pa roj satated ntxiv ua ntxiv ua cov chav superheated, uas yog qhov tseem ceeb rau kev ua haujlwm ntawm lub hwj chim ntawm lub hwj chim. Qhov no yog cov ntawv thov feem ntau rau T1A.
Tub tshib Tube:The water-wall and convection sections of fossil fuel-fired boilers.
Cov tshuab hluav taws kub:Hauv cov tshuab uas muaj siab - dej txias uas yuav tsum tau hloov cua sov.
Lub zog hluav taws xob:Ob qho tib si convectional thee -}} cov nroj tsuag raug rho tawm haujlwm thiab cov nroj tsuag biomass.
Kev sib piv nrog lwm qib
Nws tau pab tau pom tias yuav ua li cas los- 20}} moly mo) thiab chromium} {5 5}} molybdenum (CR-mo) qib.
| Teem nqi | Qhov Tseem Ceeb Alloying Ntsiab Lus | Kev siv rooj plaub thiab qhov kub |
|---|---|---|
| Sa-209 t1a | C - mo(0.5% mo) | SuperhtectionsCov. Zoo rau qhov kub txog rau ~ 850 Qib F (455 degree). |
| Sa-213 T11 | 1.25% CR, 0.5% MO | Siab dua T1A. Zoo dua oxidation thiab corrosion tsis kam. Mus txog ~ 1000℃f (540 degree). |
| Sa-213 T22 | 2.25% CR, 1.0% MO | Muaj ntau heev rau superheaters thiab reseaters. Zoo heev lub zog thiab oxidation tsis kam. Txog li ~ 1050℃f (565 degree). |
| SA-210 A1 / C | C - si(Carbon Steel) | Boiles Tubes(Dej phab ntsa). Siv nyob rau hauv cov seem qis dua li superheaters. |
Lub ntsiab takeaway:T1A yog ib qho haujlwm ua haujlwm rau cov ntawv thov superheater qhov twg kub siab, tab sis tsis siab yuav tau cov qhab nia kim dua li T11 lossis T22.
Cov Qauv thiab Cov Lus Qhia Tshwj Xeeb
Pab Tswj Qauv: ASTM A209 / ASME SA-209
ASTM A209 yog cov khoom siv tshwj xeeb los ntawm Astm International.
ASME SA-209 yog ASME BOILER THIAB SIAB RAU LUB HLAU CODE (BPVC) kev txais tos ntawm Astm txheem. Rau kev cog ntoo fais tsim hauv Asmeskas, cov Asme version feem ntau yog hais txog.
Kuaj thiab tshuaj xyuas:Cov qauv yuav tsum tau sim ntau yam kev sim kom paub tseeb tias zoo, suav nrog:
Tensile Xeem
Plhaw kev kuaj
Kev ntsuas hardness
Hydrostatic Kev Ntsuam Xyuas(los yog tsis - kev ntsuas hluav taws xob puas tsuaj)
Qoob ntais lojkuaj
Lub ntsiab
SA-209 T1A Seamless Steel Yeeb Nkabyog aCarbon - molybdenum alloy steel rajtshwj xeeb tsim rauhigh - kub thiab siab - qhov kev pab cuam siabNyob rau hauv lub zog boilers thiab kev hloov cua sov. Cov ntsiab lus tsim kho thiab cov ntsiab lus molybdenum ua rau nws xaiv tau thiab muaj zog rau cov khoom tseem ceeb xws li superheater leeg, qhov twg tsis muaj kev xaiv.
Thaum sofcing cov khoom no, nws yog qhov tseem ceeb los xyuas kom meej tus neeg muab khoom siv tauCov Ntawv Pov Thawj Ua Lag Luam (MTC)lossisDaim Ntawv Pov Thawj Ua Raws CaiTxhawm rau pov thawj tias cov yeeb nkab sib ntsib txhua qhov yuav tsum tau ua ntawm Astm A209 / ASME SA-209 tus qauv.
