SA671 C100 Carbon Steel Boiler Hlau Yeeb
Taw qhia
ASTM A671 C100 yog siab -lub zog, hluav taws xob- fusion-welded carbon steel phaj yeeb nkab feem ntau siv rausiab -siab thiab siab kub pabnyob rau hauv boilers thiab siab hlab ntsha. Nws yog ib feem ntawmASTM A671 Cov Lus Qhia Tshwj Xeebspecification, uas suav nrog kev cai-fabricated cylindrical steel kav uas tsim los ntawm phaj thiab welded los ntawm cov txheej txheem arc tsis siv neeg.
Tus "C" hauv C100 qhia tias cov yeeb nkab yog tsim los ntawmphaj khoom(as opposed to coil), thiab "100" qhia nwsYam tsawg kawg nkaus uas muaj zog ntawm 100 ksi (690 MPa)ntawm chav tsev kub. Qib no yog tsim los rau cov ntawv thov uas xav tau lub zog zoo dua thiab kev ntseeg siab hauv qhov xav tau ib puag ncig.
Cov yam ntxwv tseem ceeb
Khoom siv:Siab - lub zog carbon steel.
Kev tsim khoom:Hluav taws xob-Fusion-Welded (EFW) los ntawm cov hlau phaj. Hom weld feem ntau suav nrog Ob -Welded Butt Joint (Class 1 txog 12, nyob ntawm qib ntawm radiography).
Cov khoom tseem ceeb: High yield thiab tensile zog.
Yam Kev Pabcuam Kub Kub:Txog li kwv yees650℃F (343 degree). Rau qhov kub siab dua, qhov tso cai rau kev ntxhov siab los ntawm kev tsim kho txoj cai (xws li ASME BPVC) yuav tsum tau sab laj.
Daim Ntawv Thov Tseem Ceeb:Tseem ceeb heev - cov kav dej siab hauv lub tshuab hluav taws xob tsim hluav taws xob, cov nroj tsuag petrochemical, thiab cov hlab ntsha hnyav.
Qauv:ASTM A671, feem ntau xaj kom ua tau raws li ASME BPVC cov cai.
Tshuaj muaj pes tsawg leeg (ASTM A671 C100,%)
| Lub ntsiab | Qhov siab tshaj plaws (%) | Sau ntawv |
|---|---|---|
| Cov pa roj carbon (C) | 0.22 | Tswj rau weldability thiab lub zog. |
| Manganese (Mn) | 1.35 | Txhim khu lub zog thiab hardenability. |
| Phosphorus (P) | 0.035 | Impurity, khaws cia tsawg rau toughness. |
| Sulfur (S) | 0.035 | Impurity, khaws cia qis rau weldability. |
| Silicon (Si) | 0.15 - 0.40 | Deoxidizer, txhim kho lub zog. |
| Chromium (Cr) | 0.25 | Tej zaum yuav muaj raws li cov khoom seem. |
| Nickel (Ni) | 0.25 | Tej zaum yuav muaj raws li cov khoom seem. |
| Molybdenum (hli) | 0.08 | Tej zaum yuav muaj raws li cov khoom seem. |
*Faj seeb: Cov hlau yog tsim los ua kom zoo-kev xyaum nplej thiab raug tua tag nrho. Cov khoom siv phaj feem ntau ua raws li ASTM A515, A516, lossis cov lus qhia zoo sib xws. Cov khoom lag luam tsom xam kam siv.*
Mechanical Properties
| Khoom | Tus nqi (Imperial) | Tus nqi (Metric) | Kev kuaj mob |
|---|---|---|---|
| Yield zog (min) | 100 ksg | 690 MPa ua | Chav ntsuas kub |
| Tensile zog (min) | 115 ksg | 795mpa ua | Chav ntsuas kub |
| Elongation (min,%) | 16 | 16 | Hauv 2 nti (50mm) Gauge Length |
| Impact Toughness (KV) | 20 ft -lb avg (27 J) | 20 ft -lb avg (27 J) | Ntawm qhov ntsuas ntsuas ntsuas (feem ntau-20 ° F / -29 ° Clos yog siab dua) |
* Daim ntawv ntsuam xyuas cuam tshuam: Charpy V- qhov ntsuas qhov cuam tshuam yogxaiv taurau C100 tshwj tsis yog tau teev tseg hauv daim ntawv xaj yuav khoom. Qhov ntsuas kub yuav tsum tau nyob ntawm qhov ntsuas qhov ntsuas qhov ntsuas thiab kev tswj hwm. Rau qhov qis-kev siv kub, qis- qib zog xws li C60/C70 tej zaum yuav tsim nyog dua.*
Kev kho cua sov
Cov yeeb nkab tiav lawm vuam yuav tsum muaj kev ntxhov siab-tawm tom qab vuam, tshwj tsis yog lub vuam yog tsim los ntawm cov txheej txheem thiab nrog preheat/post-weld heat treatment uas ua rau "raws li -welded" qauv nrog cov khoom ua tau raws li cov kev cai tshwj xeeb. Tag nrho lub cev normalizing lossis tempering kuj yuav raug teev tseg.
Tsis yog -Kev Tshawb Fawb Kev Ua Phem (NDE)
NDE yog akev xav tau tseem ceeba671 cev. Cov kev qhia tshwj xeeb txhais tau ntau yam "Chav" raws li qhov ntawm radiography ntawm longitudinal weld seam:
Chav Kawm 12:100% radiography ntawm weld ntev.
Chav Kawm 22:Spot radiography (kwv yees . 2% ntawm qhov ntev weld).
Chav Kawm 32:Tsis xav tau radiography (rau cov ntawv tsis yog-tseem ceeb).
Cov chav kawm yuav tsum tau teev tseg los ntawm tus neeg yuav khoom raws li tus qauv tsim.
Tej kev siv
Main Steam Lines & Kub Reheat Linesnyob rau hauv siab - siab fossil roj fais fab nroj tsuag.
Boiler Headers thiab Manifoldsyuav tsum tau muaj kev kub ntxhov.
Siab -Txoj Txheej Txheem Pipinghauv petrochemical thiab chiv.
Hnyav-Npaj Siab Hnyavthiab reactor plhaub.
Geothermal Power Plant Piping.
Sib piv nrog Lwm Qib
| Feature | TIAB SA 671 C100 | SA 671 CC 60/70 | TIAB SA 333 Gr.6 |
|---|---|---|---|
| Qib Siab | Siab heev(100 TSI) | Nruab nrab -High(60/70 ksi YS) | Nruab nrab(35 hli) |
| Lub Hom Phiaj | High-Npaj Siab & Siab- Kev Pabcuam Kub | General Boiler/Pressure Vessel Service | Tsawg-Tsub Toughness |
| Cov khoom tseem ceeb | Tensile/yield zog | Weldability & General Strength | Impact Toughness ntawm-45 ° F (-43 ° F) |
| Hom Temp Range | Kub kub (txog ~ 650 ° F) | Kub kub siab | Sub -zero to Ambient |
| Impact Test | Optional (tshwj tsis yog hais tseg) | Tsis xav tau los ntawm lub hauv paus spec | Yuav tsum tau(ntawm qhov tsim qis temp) |
| Nqi | Siab dua (vim ntau dua alloy / ua tiav) | Nruab nrab | Tus nqi nruab nrab (nqi ntxiv los ntawm kev sim cuam tshuam) |
Standards & Certification
Primary Standard: ASTM A671 Cov Lus Qhia Tshwj Xeeb- Txuj Specification for Electric-Fusion-Welded Steel Yeeb Nkab rau Siab-Kev Pabcuam Siab ntawm Cov Kub Kub Kub.
Kev tsim kho Code:Yuav luag tsuas yog siv raws li covASME Boiler thiab Pressure Vessel Code (BPVC), Tshooj I (Power Boilers) lossis Tshooj VIII (Lub Nkoj Siab).
Ntawv pov thawj:Muab nrog kev qhiaMill Test Certificate (MTC)Ua raws li EN 10204 Hom 3.2, suav nrog daim ntawv pov thawj phaj zeb, tshuaj xyuas tshuaj, kev sim tshuab, NDE cov ntaub ntawv, thiab cov ntaub ntawv kho cua sov. Tag nrho traceability yog qhov tseem ceeb.
Nco ntsoov:SA671 C100 sawv cev rau cov khoom tshwj xeeb, siab -kev ua tau zoo. Nws txoj kev xaiv, vuam txheej txheem tsim nyog, thiab fabrication yuav tsum nruj me ntsis raws li cov ASME BPVC seem thiab koom nrog cov ncauj lus kom ntxaws engineering xyuas vim nws lub zog siab thiab cuam tshuam vuam kev txiav txim siab (preheat, post-weld heat treatment, etc.).
