Lub ntsiab
Sa-209 T1yog tus qauv tshwj xeeb rau kev sib tw nruab nrab - @} pa roj carbon hlau boiler thiab tus supertheater leeg, txhais los ntawmASTM International(tshwj xeeb nyob rau hauv lubASTM A209 / A209MTxuj). Qhov "T1" txhais tau ib qho tshuaj muaj feem tshwj xeeb feem ntau raws liCov pa roj carbon - molybdenum (c - mo)Hlau.
Cov kav dej no thiab cov raj yog tsim los rau high- kev pab kub, ua rau lawv lub zog tseem ceeb hauv lub hwj chim tiam thiab cov txheej txheem kev lag luam.
1. Cov Ntsiab Lus Tseem Ceeb & Cov Qauv
Pab Tswj Qauv: ASTM A209 / A209M- Txheem Cov Qauv rau Seamless Carbon {}}}} steel boiler thiab superheater leeg.
Hom:Seamless (yuav tsum tau rau qib no).
Daim ntawv foos:Tube lauj kaub boiles, leeg supertheat, leeg siab.
2. Tshuaj lom neeg sib xyaw
Cov tshuaj lom neeg muaj pes tsawg leeg yog thawj qhov tseem ceeb txhais tau SA-209 T1. Cov lus hauv qab no qhia txog cov feem pua uas xav tau los ntawm qhov hnyav.
| Lub ntsiab | Muaj pes tsawg leeg (%) |
|---|---|
| Carbon (c) | 0.10 - 0.20 |
| 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 |
Vim li cas cov muaj pes tsawg leeg no:
Molybdenum (MO):Qhov no yog qhov tseem ceeb siv tau. Nws tseem nce cov hlau lub zog ntawm kev nce kub, txo cov cav (qeeb heev ntawm kev ntxhov siab thaum muaj kev ntxhov siab ntau dua), thiab txhim kho kev nyuaj siab.
Cov pa roj carbon (c):Muab cov khoom siv muaj zog thiab hardness. Qhov nruab nrab cov pa roj carbon ntau cov pa roj carbon ntau muaj kev sib npaug ntawm lub zog thiab weldability.
3. Cov Khoom Siv Kho Tshuab
Cov cuab yeej ua haujlwm yog kuaj ntawm chav sov. Cov txiaj ntsig sib txawv me ntsis ntawm cov metric (m) thiab nti- phaus version ntawm tus qauv.
| Ntiag tug | Tus nqi (ASTM A209) | Tus nqi (ASTM A209M) |
|---|---|---|
| Lub zog tensile | 55,000 psi (min) | 380 MPa (min) |
| Paib lub zog | 30,000 PSI (min) | 205 MPa (min) |
| Elongation | - | - |
| • hauv 2 hauv. (50 hli) | 30% (min) | 30% (min) |
| • hauv 8 x inch | 20% (min) | 20% (min) |
4. Cov yam ntxwv & Cov txiaj ntsig
Siab - kub lub zog:Zoo heev rau cov nkag thiab tawg piv rau cov hlau nplaum ua kom zoo nkauj (zoo li ATM A106 qib B).
Zoo weldability:Cov ntsiab lus tsawg cov ntsiab lus ua rau nws yooj yim weldable nrog cov txheej txheem tsim nyog, ho ua ntej {}} Weld Kev Kho Mob Kub (PWT) feem ntau pom zoo.
Kuj: Rau Graphitization:Molybdenum yuav pab tiv thaiv kom tawg rau hauv carbide mus rau graphite, uas tuaj yeem ua rau muaj kev kub siab (feem ntau}℃f / 425℃{{4℃ntau).
Muaj peev xwm:Tuaj yeem khoov duav thiab tsim nrog cov qauv txheem.
5. Cov Ntawv Thov Tib Neeg
Sa - 209 T1 yog tshwj xeeb siv nyob rau hauv high - kub, siab dua ib puag ncig. Nws thawj cov ntawv thov muaj xws li:
Power tiam Boilers:Waterwall Tubes, Superheater Leeg, Triather Rabes, thiab lwm yam siab xeem.
Muaj Boilers:Rau ntau txheej txheem kev lag luam.
Cov tshuab hluav taws kub:Hauv cov tshuab ua haujlwm ntawm kev nce siab kub thiab ua haujlwm.
Fossil Roj Nroj Tsuag:Cov khoom ua haujlwm ua haujlwm rau ntau cov khoom siv hauv cov thee thiab roj -}} raug rho tawm haujlwm hluav taws xob.
Petrochemical Kev Lag Luam:Hauv qee cov txheej txheem rhaub dej rau thiab hloov cov kab.
6. Kev sib piv nrog lwm cov qib kawm
Nws yog qhov tseem ceeb kom paub qhov txawv sa-} 209 T1 los ntawm lwm cov qib sib xws.
Sa-209 T1 vs. Astm A106 Qib B
| Yam zoo | Sa-209 T1 | A106 Qib B |
|---|---|---|
| Ntaus | Alloy Hlau (C - mo) | Cov Hlau Hlau |
| Qhov tseem ceeb | Molybdenum (mo) | - |
| High - temp zog | Zoo tshaj | Zoo (tab sis qis dua T1) |
| Tus nqi | Siab dua | Qi dua |
| Raug | Superheaters, high - h siab boilers | Qhov Kev Pab Cuam dav dav, qis {{{0} boilers |
Sa-209 T1 vs.-213 T11
Qhov no yog ib qho tshwm sim ntawm kev tsis meej pem, raws li ob qho tib si siv hauv boilers.
| Yam zoo | Sa-209 T1 | Sa-213 T11 |
|---|---|---|
| Lub hom phiaj | ASTM A209 | ASTM A213 |
| Chromium (cr) | Tsis muaj | 1.00 - 1.50 % |
| Alloy Hom | C - mo | 1.25CR-0.5mo |
| Oxidation tsis kam | Qi dua | Siab dua(vim cr) |
| High - temp zog | Zoo | Zoo dua |
| Daim ntawv thov | Qis - kub} kub kub superse | Siab - kub ceev SuperHeater / Reubmer Seem |
Tseem ceeb takaway:Lub xub ntiag ntawmYeebsabHauv T11 ua rau nws zoo dua rau cov kev pabcuam uas ob lub zog siab thiab tsis kam mus rau oxidation / scaling yuav tsum muaj. T1 feem ntau siv qhov twg kub siab tab sis tsis heev txaus los pov thawj chromium ntau dua chromium-}}}}}}}} cov hlau alloy.
Lub ntsiab
Sa-209 T1yog ib qho kev ntseeg siab thiab siv davSeamless Carbon - molybdenum alloy steel rajTsim los rau high - qhov kev thov kub siab, tshwj xeeb hauv cov boiler thiab superheat tshuab. Nws lub ntsiab kom zoo dua cov roj carbon hlau yog nws lub zog zoo tshaj, muab nws tus nqi ua tau zoo rau cov ntsuas kub thiab cov txheej txheem cov txheej txheem.
Thaum sourcing cov khoom siv no, ib txwm xyuas cov ntawv pov thawj zeb (MTC) ua raws li Astm A209 / A209m thiab cov yeeb nkab yog cim kom haum.
