ASTM A210 / ASME SA210 yog dab tsi?
ASTM A210 yog tus qauv specification rau seamless nruab nrab - carbon steel boiler thiab superheater raj. Tib qhov kev qhia tshwj xeeb yog luam tawm los ntawm ASME li SA210, thiab S prefix qhia tias cov khoom siv tau siv rau hauv cov khoom siv siab hauv qab ASME Boiler thiab Pressure Vessel Code. Rau boiler thiab superheater kev pab no dual txais tsis yog ib tug formality - tsim kev xam rau lub raj phab ntsa yog ib txwm ua rau ASME code, thiab cov khoom yuav tsum tau teev nyob rau hauv.
Cov specification tsuas yog siv seamless raj. Qhov tsis muaj qhov ntev ntawm qhov vuam yog qhov tso cai rau cov khoom siv los ntawm kev kub siab thiab kub siab, qhov twg weld seam yuav yog qhov txwv ntawm lub raj phab ntsa. Cov raj yog muab cov khoom kub tiav los yog txias txias, nrog rau cov khoom txias - kos cov khoom uas muab qhov zoo nkauj tiav thiab nruj dua qhov ntev.
Qib thiab Chemistry
Ob qib feem ntau tau teev tseg. Qib A-1 yog qib hom phiaj dav dav; Qib C yog qib workhorse, nrog cov ntsiab lus ntawm manganese ntau dua thiab cov tshuaj chromium me me ntxiv uas txhim kho kev tiv thaiv oxidation ntawm qhov kub thiab txias.
| Khoom, wt% | Qib A-1 | Qib C |
|---|---|---|
| Cov pa roj carbon, max | 0.27 | 0.35 |
| Manganese, max | 0.93 | 1.00 |
| Phosphorus, max | 0.035 | 0.035 |
| Sulphur, max | 0.035 | 0.035 |
| Silicon, min | 0.10 | 0.10 |
| Chromium, max | Tsis tau teev tseg | 0.25 |
Cov pa roj carbon monoxide yog cov khoom sib cais ntawm qib qis - carbon yeeb nkab specifications: cov pa roj carbon ntau dua ntawm SA210 nce lub zog thiab hardness piv rau qib xws li A106, thaum seem tsawg txaus rau lub raj yuav tsum tau welded thiab khoov los ntawm ib txwm boiler khw xyaum.
Mechanical Properties
| Khoom | Qib A-1 | Qib C |
|---|---|---|
| Tensile zog, min | 415 MPa (60,000 psi) | 485 MPa (70,000 psi) |
| Yield zog, min | 255 MPa (37,000 psi) | 275 MPa (40,000 psi) |
| Elongation, min | 30% | 30% |
| Hardness, max | 79 PAB | 89 PAB |
Lub zog siab dua ntawm Qib C tso cai rau cov phab ntsa nyias nyias rau tib lub zog tsim, uas txo qhov hnyav ntawm lub txhab nyiaj hauv lub raj thiab txhim kho cov cua sov. Qhov txiaj ntsig ntawd, tsis yog tus nqi sib txawv, yog vim li cas qib C tau teev tseg rau cov ntu tseem ceeb.
Vim li cas SA210 siv hauv Boilers
Seamless kev tsim kho, yog li lub siab ntim tsis nyob ntawm lub welded seam.
Nruab nrab- carbon chemistry uas muab lub zog siab dua li qis - carbon yeeb nkab qib.
Zoo weldability thiab formability nrog cov txheej txheem tsim nyog, uas tseem ceeb rau ntau txhiab qhov chaw thiab khw welds hauv boiler.
Kev khaws cia ntawm cov cuab yeej cuab tam ntawm qhov ntsuas kub siab pom hauv cov phab ntsa boiler thiab superheaters.
Cov nqi zoo sib xws rau cov qib alloy steel rau tib qhov kub thiab txias.
Daim ntawv thov
Lub npe ntawm qhov tshwj xeeb hais txog nws qhov kev siv tseem ceeb. Boiler raj tsim cov dej- cov phab ntsa txias uas tsim cov pa; Cov raj superheater siv cov dej saturated los ntawm lub nruas thiab nce nws qhov kub ntxiv, ua kom qhuav superheated chav uas txhim kho turbine efficiency. Tshaj li ob lub luag haujlwm tseem ceeb no, SA210 tube yog siv rau hauv cov khoom siv hluav taws xob, cov neeg siv nyiaj txiag thiab qee qhov kev siv lub nkoj siab uas qhov kev tiv thaiv corrosion tsis yog qhov yuav tsum tau ua.
Qhov ntau thiab tsawg, qhov xwm txheej thiab kev sib piv nrog rau lwm qhov tshwj xeeb
SA210 raj feem ntau yog muab los ntawm txog NPS 1/2 txog NPS 5, nyob rau hauv cov txheej txheem phab ntsa lossis rau ib phab ntsa yam tsawg kawg nkaus, kub tiav lossis txias kos. Qhov ntau thiab tsawg tuaj yeem muab tau qhov twg tus qauv tso cai.
| Specification | Khoom siv | Hom kev siv |
|---|---|---|
| ASTM A106 1 | Seamless carbon steel yeeb nkab | Siab -cov txheej txheem kub thiab cov kev pabcuam refinery, feem ntau kom qis dua SA210 |
| ASTM A53 | Welded thiab seamless carbon steel yeeb nkab | Lub hom phiaj dav dav, cov qauv tsim thiab qis -cov kav dej siab; feem ntau tsis tau teev tseg rau lub luag haujlwm tseem ceeb ntawm boiler |
| ASTM A335 Cov Lus Qhia Tshwj Xeeb | Seamless ferritic alloy steel yeeb nkab | Kub thiab siab dua li carbon hlau tuaj yeem txhawb nqa, siv chromium- qib molybdenum |
Nyob rau hauv luv luv, SA210 nyob rau hauv lub band ntawm general- lub hom phiaj carbon steel piping thiab chromium- molybdenum alloy piping. Qhov twg hlau kub nce siab tshaj li cov pa roj carbon steel muaj peev xwm tuav tau nyob rau hauv nws qhov kev cia siab, tus tsim txav mus rau qib alloy.
Kev soj ntsuam thiab kev yuav khoom
Kev txiav txim los ntawm qib, tsis yog los ntawm qhov loj me. Qib A-1 thiab Qib C muaj qhov sib txawv tso cai, yog li kev hloov pauv hloov qhov ntsuas siab ntawm lub raj. Pom zoo rau ntawm daim ntawv pov thawj: kub tooj thiab qib, tshuaj ntsuam xyuas, tensile thiab yield tshwm sim, elongation thiab hardness, hydrostatic test los yog tsis-destructive ntsuam xyuas qhov twg teev, thiab qhov seem xyuas ntawm phab ntsa thickness thiab ovality. Rau superheater thiab reheater raj, phab ntsa thickness kam rau ua yog qhov parameter feem ntau yuav cuam tshuam rau tus qauv tsim.
FAQ
Q: ASTM SA210 yog dab tsi?
Nws yog qhov tshwj xeeb rau seamless nruab nrab - carbon steel boiler thiab superheater raj, luam tawm los ntawm ASTM li A210 thiab los ntawm ASME li SA210 rau kev siv code.
Q: Qhov txawv ntawm SA210 Qib A-1 thiab Qib C yog dab tsi?
Qib C muaj ntau dua cov pa roj carbon thiab manganese txwv ntxiv rau me me chromium ntxiv, muab lub zog tensile yam tsawg kawg nkaus ntawm 485 MPa tiv thaiv 415 MPa rau Qib A-1, thiab ntau dua qhov tsawg kawg nkaus tawm lub zog.
Q: Vim li cas thiaj yuav tsum SA210 raj seamless?
Boiler thiab superheater tubes ua haujlwm ntawm kev kub siab thiab kub, thiab cov phab ntsa seamless tshem tawm cov welded longitudinal raws li qhov muaj peev xwm tsis muaj zog.
Q: Qhov ntau thiab tsawg yog muaj?
Cov khoom siv dav dav suav nrog kwv yees li NPS 1/2 txog NPS 5, hauv cov txheej txheem txheej txheem lossis rau phab ntsa yam tsawg kawg nkaus, hauv kub- tiav lossis txias- mob.
Q: SA210 piv nrog A106 li cas?
A106 yog qhov qis- carbon seamless yeeb nkab specification rau siab -kub txheej txheem piping; SA210 yog ib qho nruab nrab - carbon tube specification nrog lub zog siab dua, npaj rau boiler thiab superheater kev pab cuam.
Q: Puas yog SA210 haum rau cov cua kub exchanger tubing?
Nws yog siv nyob rau hauv cov khoom siv hluav taws xob sib pauv qhov twg corrosion tsis yog qhov tsim qauv tsim. Rau cov dej num corrosive, stainless lossis alloy qib tau teev tseg.
