Scenario 1: Koj Meant SA-213 T91 / T911 (Feem ntau)
Qhov no yog qib siab -qib alloy tubing siv nyob rau hauv siab - siab, siab - qhov kub ntawm lub hwj chim boilers.
1. Khoom siv & Cov yam ntxwv tseem ceeb
Txheem: ASTM A213 / ASME SA-213 Cov Lus Qhia- Txheem rau Seamless Ferritic thiab Austenitic Alloy-Steel Boiler, Superheater, thiab Thaum tshav kub kub-Exchanger Tubes.
Qib T91:Ib chromium{0}}molybdenum alloy steel nrog vanadium thiab niobium.
Qib T911:Ib qho kev hloov kho ntawm T91 nrog tswj boron thiab nitrogen rau kev txhim kho creep zog.
Feature tseem ceeb:Zoo heevcreep zog(ua haujlwm rau deformation nyob rau hauv kev ntxhov siab ntawm qhov kub thiab txias) thiab oxidation kuj.
2. Chemical Composition (Qhov hnyav %)
| Element | T91 (%) | T911 (%) |
|---|---|---|
| Cov pa roj carbon (C) | 0.08 - 0.12 | 0.09 - 0.13 |
| Manganese (Mn) | 0.30 - 0.60 | 0.30 - 0.60 |
| Phosphorus (P) | 0.020 max | 0.020 max |
| Sulfur (S) | 0.010 max | 0.010 max |
| Silicon (Si) | 0.20 - 0.50 | 0.10 - 0.50 |
| Chromium (Cr) | 8.00 - 9.50 | 8.50 - 9.50 |
| Molybdenum (hli) | 0.85 - 1.05 | 0.90 - 1.10 |
| Vanadium (V) | 0.18 - 0.25 | 0.18 - 0.25 |
| Niobium (Nb) | 0.06 - 0.10 | 0.06 - 0.10 |
| Nickel (Ni) | 0.40 max | 0.40 max |
| Aluminium (Al) | 0.04 max | 0.02 max |
| Nitrogen (N) | 0.030 - 0.070 | 0.040 - 0.090 |
| Boron (B) | - | 0.0005 - 0.0050 |
3. Mechanical Properties
Tensile zog:Ntau dua lossis sib npaug rau 585 MPa (85 ksi)
Yield zog:Ntau dua lossis sib npaug rau 415 MPa (60 ksi)
Elongation:Ntau dua lossis sib npaug li 20%
4. Kev siv ntau
Superheater Tubes
Reheater Tubes
Siab -Tub kub taub hau thiab kav dej(qhov twg teev los ntawm code, piv txwv li, SA-335 P91/P911)
Siv nyob rau hauv cov thee siab heev- hluav taws xob fais fab nroj tsuag, pov tseg- mus rau - cov nroj tsuag hluav taws xob, thiab lwm yam siab - boilers uas muaj hlau kub tshaj 595℃(1100℃F).
Scenario 2: Koj Meant SA-214 (Carbon Steel Boiler Tube)
Qhov no yog qhov ntau dua, qis- alloy steel rau kev siv boiler thiab tshav kub exchanger.
1. Khoom siv & Cov yam ntxwv tseem ceeb
Txheem: ASTM A214 / ASME SA-214 Cov Lus Qhia- Txheem rauERWCarbon Steel Boiler thiab Superheater Tubes.
Qib:Cov qib nkaus xwb yog Carbon Steel, feem ntau hu ua "Qib C" (tsis txhob totaub nrog AISI 1020, thiab lwm yam).
Feature tseem ceeb: Electric Resistance Vuam (ERW)txheej txheem ua rau nws raug nqi -zoo rau nruab nrab- kev pabcuam siab. Nws tsis yog seamless raj.
2. Chemical Composition (Qhov hnyav %)
Cov pa roj carbon (C):0.06 - 0.18% (Siv raws li phab ntsa thickness)
Manganese (Mn):0.27 - 0.63% (Siv raws li phab ntsa thickness)
Phosphorus (P):0.025% max
Sulfur (S):0.025% max
3. Mechanical Properties
Tensile zog:Ntau dua lossis sib npaug rau 310 MPa (45 ksi)
Yield zog:Ntau dua lossis sib npaug rau 172 MPa (25 ksi) - Rau phab ntsa Tsawg dua lossis sib npaug rau 0.075 hauv (1.9 mm), nws yog 40 ksi min.
Elongation:Nws txawv nrog phab ntsa tuab tab sis feem ntau yog ntau dua lossis sib npaug li 35%.
4. Kev siv ntau
Boiler Tubes(hauv qis- qhov kub thiab txias zoo li phab ntsa dej)
Thaum tshav kub kub Exchanger Tubes
Condenser Tubes
Kev pabcuam dav davqhov twg qhov kub thiab txias tsis kub heev.
Summary Comparison & Key Differences
| Feature | SA-213 T91/T911 | SIB-214 |
|---|---|---|
| Hom khoom | Chromium{0}}Molybdenum Alloy Steel | Carbon Steel |
| Kev tsim khoom | Seamless | ERW (Electric Resistance Welded) |
| Cov khoom tseem ceeb | Siab -Temperature Creep Strength | Zoo zog & Formability ntawm tus nqi qis |
| Kev Pabcuam Kub | Siab heev(mus txog ~ 650℃/ 1200℃F) | Nruab nrab |
| Kev Pabcuam Siab | Siab Siab | Nruab Nrab Siab |
| Siv dav | Superheaters, Reheaters | Dej- phab ntsa tube, Kub exchangers |
| Nqi | Siab dua | qis |
Xaus
Yog tias koj daim ntawv thov muaj qhov kub thiab txias heev (xws li lub tshuab fais fab superheater), koj yuav luag nrhiavSA-213 T91los yogT911.
Yog tias koj daim ntawv thov yog rau kev lag luam dav dav boiler lossis cov khoom siv hluav taws xob uas muaj qhov nruab nrab, tej zaum koj yuav nrhiav tau ntau duaSIB-214carbon steel tube.
Nco ntsoov paub meej cov ntaub ntawv qhia tseeb ntawm koj qhov project tsim cov ntaub ntawv lossis cov ntaub ntawv los xyuas kom koj xaiv cov yeeb nkab kom raug rau cov kev pabcuam npaj.
