Txheej txheem cej luam
1.4903Cov khoom siv European (raws li DIN EN 10216-2) rau achromium-molybdenum alloy hlau. Nws yog tsim tshwj xeeb rau kev ua haujlwm siab - kub, ua rau nws xaiv zoo rauboiler raj, superheaters, thiab kub exchangersnyob rau hauv fais fab nroj tsuag thiab industrial boilers.
Qhov sib npaug US tus qauv (ASTM / ASME) yogA213 T91 / SA213 T91.
1. Cov yam ntxwv tseem ceeb & tshuaj lom neeg muaj pes tsawg leeg
Qib no qhov siab - qhov kub thiab txias yog los ntawm kev sib npaug ntawm cov tshuaj lom neeg thiab kev kho cua sov tshwj xeeb.
Chemical Composition (Tswj %)
| Lub ntsiab | Cov ntsiab lus (%) | Lub luag haujlwm |
|---|---|---|
| Cov pa roj carbon (C) | 0.08 - 0.12 | Muab lub hauv paus zog thiab hardness. |
| Manganese (Mn) | 0.30 - 0.60 | Txhim kho hardenability thiab lub zog. |
| Silicon (Si) | 0.20 - 0.50 | Deoxidizer thaum lub sij hawm steelmaking, txhim kho lub zog. |
| Chromium (Cr) | 8.00 - 9.50 | Muab oxidation zoo heev thiab corrosion kuj ntawm qhov kub thiab txias. |
| Molybdenum (hli) | 0.85 - 1.05 | Txhim khu lub zog ntawm qhov kub thiab txias thiab creep kuj. |
| Vanadium (V) | 0.18 - 0.25 | Cov ntaub ntawv ruaj khov carbide, ua kom muaj zog ntau ntxiv. |
| Niobium (Nb) | 0.06 - 0.10 | Refines grain qauv thiab pab txhawb kom nag lossis daus. |
| Nitrogen (N) | 0.030 - 0.070 | Ua haujlwm nrog Vanadium los txhim kho lub zog. |
| Nickel (Ni) | Tsawg dua los yog sib npaug li 0.40 | Txhim kho toughness. |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.020 | Impurity (kom qis). |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.010 | Impurity (kom qis). |
2. Mechanical Properties
Cov yeeb nkab yuav tsum tau muab nkag rau hauvnormalized thiab temperedmob kom ua tiav cov khoom no.
Tensile zog:Ntau dua lossis sib npaug li 585 MPa
Yield zog (0.2% Offset):Ntau dua lossis sib npaug li 415 MPa
Elongation:Ntau dua lossis sib npaug li 20% (ntawm tus qauv ntsuas qhov ntev)
Qhov tseem ceeb Advantage:Tsis zoo li carbon steels, 1.4903 / T91 khaws ib feem tseem ceeb ntawm nws lub zog ntawm qhov kub siab (txog ~ 600℃/ 1112℃F), uas yog qhov tseem ceeb rau kev siv boiler.
3. Vim li cas nws thiaj siv rau Boiler Pipes?
High Creep Strength:Qhov no yog qhov khoom tseem ceeb tshaj plaws. "Creep" yog qhov qeeb, mus tas li deformation ntawm cov khoom nyob rau hauv qhov kev ntxhov siab tas li ntawm qhov kub thiab txias . 1.4903 muaj qhov tshwj xeeb tsis kam mus rau creep, tso cai rau cov raj boiler los tiv thaiv kev kub siab sab hauv rau ntau xyoo tsis ua haujlwm.
Zoo heev Oxidation Resistance:Cov ntsiab lus siab Chromium tsim ib qho ruaj khov, tiv thaiv txheej ntawm chromium oxide rau ntawm qhov chaw, tiv thaiv scaling thiab degradation los ntawm kub flue gases thiab chav.
Zoo thermal conductivity:Hloov cov cua sov los ntawm cov pa hluav taws xob mus rau cov dej / chav dej hauv cov yeeb nkab.
Weldability thiab Fabricability:Nws yog weldable, txawm hais tias nws yuav tsum tau ua ntej- cua sov thiab tom qab-weld kev kho cua sov (PWHT) ua raws li cov txheej txheem nruj los kho cov microstructure thiab cov khoom hauv tshav kub- thaj chaw cuam tshuam (HAZ).
4. Kev siv ntau
Superheater thiab Reheater Tubes:Cov seem ntawm lub boiler qhov twg chav yog rhuab mus rau nws siab tshaj plaws kub.
High -Tub kub taub hau:Cov kav dej uas khaws cov pa los ntawm ntau lub raj.
Main Steam Lines:Cov kav dej uas nqa cov pa ntawm lub boiler mus rau lub turbine.
Thaum tshav kub kub Exchangersnyob rau hauv xav tau tshuaj thiab petrochemical ib puag ncig.
5. Cov qauv thiab qib sib npaug
1.4903 cov kav dej tau tswj hwm los ntawm ntau tus qauv thoob ntiaj teb:
| Thaj tsam | Txuj | Qib Qib | Sib npaug |
|---|---|---|---|
| Teb chaws Europe | TS EN 10216-2 | X10CrMoVNb9-1 | 1.4903 |
| Teb chaws USA | ASTM A213 / ASME SA213 | T91 | 1.4903 |
| Nyiv | JIS G3462 | SIB 26 | Zoo sib xws |
| Lub teb chaws Yelemees | TIAB SA 17175 | X10CrMoVNb9-1 | 1.4903 |
Nco tseg:Txawm hais tias cov qhab nia zoo sib npaug, tuaj yeem muaj qhov sib txawv me me hauv cov tshuaj txwv thiab qhov yuav tsum tau kuaj xyuas qhov yuav tsum tau ua ntawm cov qauv. Ib txwm paub meej tias tus qauv tshwj xeeb xav tau rau koj qhov project.
6. Sib piv nrog lwm cov Boiler Steel Pipes
vs. Carbon Steel (piv txwv li, A106 Gr. B / 1.0405):
Carbon steel yog pheej yig dua thiab yooj yim rau fabricate.
1.4903 yog deb tshaj nyob rau hauv lub zog siab tshaj 450℃(842℃F).Cov pa roj carbon steel poob lub zog sai sai thiab yooj yim nkag mus, txwv nws txoj kev siv kom qis dua - qhov kub thiab txias ntawm boiler.
vs . 1.7380 / T22 (2.25Cr-1Mo):
T22 yog cov hlau ua haujlwm rau cov boilers.
1.4903 muaj zog duantawm ib tug muab kub, tso cai rauthinner yeeb nkab phab ntsa, uas txo qhov hnyav thiab txhim kho kev hloov hluav taws xob. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau qhov kub tshaj plaws, qhov tseem ceeb tshaj plaws ntawm cov khoom siv hluav taws xob niaj hnub siab -kev ua tau zoo.
Cov ntsiab lus
1.4903 Carbon Steel Boiler Yeeb Nkabtsis yog ib qho yooj yim carbon steel tab sis ib tug sophisticatedchromium-molybdenum-vanadium alloy hlau. Nws tus nqi tseem ceeb nyob hauv nwszoo heev - kub lub zog thiab creep kuj, ua kom muaj kev tsim kom muaj txiaj ntsig zoo thiab txhim khu kev qha siab -siab boilers rau kev tsim hluav taws xob thiab cov txheej txheem kev lag luam. Thaum koj pom qhov kev xaiv no, koj tab tom cuam tshuam nrog cov khoom siv ua haujlwm siab - tsim los rau kev pabcuam tseem ceeb, siab - kub.
Lus Cim Tseem Ceeb:Kev tsim, vuam, thiab kev kho cua sov ntawm 1.4903 / T91 yuav tsum muaj kev txawj tshwj xeeb thiab ua raws li cov txheej txheem tsim nyog. Kev tuav tsis raug tuaj yeem ua rau ua tsis tiav ntxov.
