ASTM A192 Seamless Carbon Steel Boiler Tubes
ASTM A192 Cov Lus Qhia Tshwj Xeebyog covthawj specificationrau seamless low - carbon steel raj siv hauvsiab - dej siab- raj boilers. Cov no yogyam tsawg kawg nkaus -phab ntsa- thickness tubesoptimized tshwj xeeb tshaj yog rau siab ntim hauv boiler kev pab cuam.
Cov yam ntxwv tseem ceeb
| Feature | Kev piav qhia |
|---|---|
| Khoom siv | Tsawg-Carbon Steel(Killed Steel) |
| Kev tsim khoom | Seamless(Kub-ua tiav lossis txias- kos) |
| Phab ntsa tsim | Yam tsawg kawg ntawm phab ntsa thicknesstsim |
| Kev siv thawj zaug | Siab - siab boiler raj |
Vim li cas A192 rau High-Pressure Boilers?
Siab Optimized:Yam tsawg kawg nkaus - phab ntsa tsim ua kom muaj peev xwm siab thaum txo qhov hnyav
Weldability zoo heev:Cov ntsiab lus carbon tsawg (CE ~ 0.35-0.40) rau vuam yooj yim
High Ductility:Tsawg kawg 35% elongation tso cai rau txias khoov yam tsis muaj cracking
Pov thawj Reliability:Ntau tshaj 80 xyoo ntawm kev nyab xeeb kev lag luam hauv cov chaw tsim hluav taws xob thoob ntiaj teb
Tus nqi -zoo:Kev lag luam feem ntau steel rau siab - kev pabcuam dej siab
Tshuaj muaj pes tsawg leeg
| Element | Kev sib xyaw (%) |
|---|---|
| Cov pa roj carbon (C) | 0.06 - 0.18 |
| Manganese (Mn) | 0.27 - 0.63 |
| Phosphorus (P), max | 0.035 |
| Sulfur (S), max | 0.035 |
| Silicon (Si) | Ntau dua los yog sib npaug rau 0.25 (Tua hlau) |
Killed Steel Advantage:Ua kom cov khoom sib xws, txo qhov porosity.
Mechanical Properties
| Khoom | Kev xav tau |
|---|---|
| Tensile zog, min | 325 MPa (47,000 psi) |
| Yield zog, min | 180 MPa (26,000 psi) |
| Elongation, min | Ntau dua lossis sib npaug li 35% (nws txawv nrog phab ntsa tuab) |
| Ntsiab Lus: | Cov cuab yeej siv tau rau ob qho tib si kub- tiav thiab txias- cov hlab |
Kev siv hauv Boilers
Boiler Cheebtsam:
Cov phab ntsa dej(lub qhov cub enclosure - thawj daim ntawv thov)
Boiler bank tubes(convective seem)
Economizer tubes
Downcomers thiab risers
Tsawg- qhov kub thiab txias superheater seem(saturated steam)
Hom Kev Pabcuam:
| Parameter | Ntau yam |
|---|---|
| Siab | Txog li ~ 180 bar (2,600 psi) |
| Kub | Mus txog ~ 400℃(750℃F) |
| Media | Dej, chav dej - dej sib tov, saturated chav |
Kev tsim khoom & Kev kho cua sov
Txoj kev tsim khoom:
Kub- tiav lawm(Feem ntau - as-rolled condition)
Txias- tau kos(Rau qhov kev zam nruj dua - yuav tsum muaj kev ntxhov siab-relieved)
Kev kho cua sov yuav tsum muaj:
Kub- cov raj ua tiav:Feem ntau muab raws li -rolled
Txias-cov tubes kos: Yuav tsum muaj kev ntxhov siab-relieved los yog annealedtom qab lub caij txias kawg
Normalizing:Tso cai thaum tau teev tseg
Kev xeem yuav tsum tau
| Kuaj | Kev xav tau | Lub hom phiaj |
|---|---|---|
| Hydrostatic Test | Yuav tsum tau(txhua lub cev) | Kev ntsuas siab ncaj ncees |
| Flattening Test | Yuav tsum tau | Ductility thiab weld zoo |
| Flaring Test | Yuav tsum tau | Muaj peev xwm nthuav mus rau hauv tubesheets |
| Hardness Test | Xaiv tau | Cov ntaub ntawv pov thawj |
| Kev kuaj tsis raug | Optional (eddy tam sim no common) | Kev kuaj pom tsis raug |
Hydrostatic Test Siab:
ntawv nyeem
P=2St/D (tsawg kawg 1000 psi rau 5+ vib nas this) Qhov twg: S=60% ntawm qhov tsawg kawg nkaus yield zog t=phab ntsa thickness D=sab nraud txoj kab uas hla
Dimensional Specifications
Qhov Loj Loj:
| Parameter | Ntau yam |
|---|---|
| Sab nraud txoj kab uas hla | ½ "mus rau 7" (12.7-177.8mm) |
| Phab ntsa Thickness | Tsawg kawg phab ntsaraws li ASME Section I yuav tsum tau |
| Ntev | Txog li 12 m tus qauv (ntau dua) |
Phab ntsa Thickness kam rau ua:
+20% / -0%ntawm nominal phab ntsa (yam tsawg phab ntsa guaranteed)
Tighter dua li cov yeeb nkab txheem rau kev ntim siab
Kev sib piv nrog cov qauv zoo sib xws
| Txuj | Khoom siv | Qhov tseem ceeb sib txawv ntawm A192 |
|---|---|---|
| ASTM A178 Cov khoom lag luam | Carbon Steel | Hluav taws xob Resistance Welded, tsis seamless |
| ASTM A 210 Cov Lus Qhia | Nruab nrab -Carbon Steel | Siab zog rau superheater raj |
| ASTM A213 T11 / T22 | Hlau alloy | For higher temperature service (>480 degree) |
| ASTM A106 Gr.B | Carbon Steel | Rausab nraud boiler piping, tsis yog boiler raj |
⚠️ Qhov txawv ntawm qhov tseem ceeb
A192 vs A106 rau Boiler Daim Ntawv Thov:
| Daim ntawv thov | Cov ntaub ntawv raug | Vim li cas |
|---|---|---|
| Boiler siab qhov chaw(tubes) | A192 | Optimized rau siab, yam tsawg kawg nkaus - phab ntsa tsim |
| Sab nraud boiler piping | A106 | Rau kev sib txuas cov kav dej, cov qauv tsim sib txawv |
| Siv A53 / A106 rau boiler raj | ❌ TSIS TXAUS SIAB & TSIS TAU-CODE | Tsis tau tsim los yog sim rau boiler siab qhov chaw |
Kev txwv kub
Maximum pom zoo:~ 400℃(750℃F)
400-455 degree:Kev txo lub zog tseem ceeb tshwm sim
Tshaj 455 degree:Graphitization txaus ntshai nrog ntev - raug
Rau qhov kub siab dua:Siv A210 lossis A213 alloy steels
Kev txiav txim siab tsim
ASME Code Ua raws:
Tshooj I(Power Boilers) tswj kev tsim
Safety yam:Feem ntau 3.5-4.0
Corrosion nyiaj pub dawb:Ntxiv phab ntsa thickness ntxiv
Yam tsawg kawg nkaus phab ntsa:Raws li ASME PG-27 formula
Fabrication Guidelines:
| Kev ua haujlwm | Kev xav tau |
|---|---|
| Txias Khoov | Yam tsawg kawg nkaus lub vojvoog=2 × OD (ntxo nrog cov txheej txheem tshwj xeeb) |
| Vuam | Preheat yog thickness> 19 hli; qis- hydrogen electrodes pom zoo |
| Expanding rau hauv tubesheets | Kev coj ua qauv - ua raws li cov chaw tsim khoom txwv |
| Khoov tom qab vuam | Tsis pom zoo tsis muaj kev ntxhov siab |
Common Failure Modes & Tiv Thaiv
1. Waterside Corrosion:
Ua rau:Oxygen pitting, nyob rau hauv - deposit corrosion
Kev Tiv Thaiv:Kev kho dej kom zoo, kev tshem tawm cov pa oxygen
Saib xyuas:Kev kuaj lub raj tsis tu ncua thiab UT thickness checks
2. Hluav taws kub Corrosion:
Ua rau:Sulfur nres, oxidation
Kev Tiv Thaiv:Tswj kom txo tau qhov cua, txwv qhov kub thiab txias
Kev tiv thaiv:Shield blocks, tiv thaiv txheej
3. Kev yaig:
Ua rau:Fly tshauv impingement, sootblower chav
Kev Tiv Thaiv:Cov txheej txheem tiv thaiv, kev ua haujlwm zoo sootblower
Tsim:Kev txwv tsis pub muaj roj txaus
Ordering Information
Qhov tseem ceeb Specifications:
Ntau(tag nrho ntev los yog tus naj npawb ntawm cov raj)
Qhov Loj:OD × Tsawg phab ntsa Thickness × Length
Kev tsim khoom:Kub-ua tiav lossis txias- kos
Kev kho cua sov:Yog lwm yam tshaj tus qauv
Xaus Xaus:Plain, beveled, los yog npaj tshwj xeeb
Kev Xeem Xeem:Kev ntsuam xyuas ntxiv dhau tus qauv
Ntawv pov thawj:MTC nrog cov xov tooj cua sov traceability
Sample Order Order:
ntawv nyeem
ASTM A192 Tubes 50.8 mm OD × 4.0 mm min phab ntsa × 12,000 mm ntev Kub-tiav, tiaj kawg Nrog hydrostatic, flattening, thiab flaring xeem Tag nrho MTC nrog traceability kom sov tooj
International sib npaug
| Thaj tsam | Standard sib npaug |
|---|---|
| Teb chaws Europe | TS EN 10216-2 P195GH |
| Nyiv | JIS G3461 STB410 |
| Tuam Tshoj | GB 5310 20G |
| Is Nrias teb | IS 1239 Pt. 2 |
Kev lag luam Standards kev koom ua ke
ASME Code Txais:
Ntu I:Txais tau rau tag nrho cov boiler siab qhov chaw
Tshooj II:SA192 yog lub npe ASME
Ntu V:Kev siv rau NDE txoj kev
Tshooj IX:Weld txheej txheem tsim nyog
Tsim Codes:
ASME B31.1:Fais fab Piping (rau kev sib txuas sab nraud)
HEI Standards:Thaum tshav kub kub Exchange Institute rau condenser
TEMA Standards:Tubular Exchanger Manufacturers Association
Hauv cov ntsiab lus: ASTM A192 yog kev lag luam tus qauv carbon steel raj rau siab - siab boiler daim ntaub ntawvqhov twg sab hauv siab yog thawj tsim kev txiav txim siab. Nws tshwj xeeb ua ke ntawmweldability, ductility, thiab siab - optimized yam tsawg kawg nkaus - phab ntsa tsimtau ua nwscov khoom siv tseem ceebrau dej- raj boiler siv thoob ntiaj teb. Kev thov kom raug nyob rau hauv nws qhov ntsuas kub kom ntseeg tau ntau xyoo ntawm kev nyab xeeb, txhim khu kev lag luam hauv kev tsim hluav taws xob thiab cov tshuab boiler.
