1. Lub npe "1.7380".
Tus lej no yog los ntawmGerman DIN (Deutsches Institut für Normung) / European EN cov ntaub ntawv tus lej system. Nws yog qhov tseeb tshaj plaws los txheeb xyuas cov hlau no.
Hom Lub Npe:Cov khoom naj npawb1.7380sib raug rau qib steel13CrMo4-5(raws li EN 10216-2).
Cov qauv zoo sib xws:
ASTM (USA): A335 P12
DIN (Lub Tebchaws Yelemees):13CrMo4-5
ISO:13CrMo4-5
2. Tshuaj muaj pes tsawg leeg
Tus yuam sij rau 1.7380 qhov kev ua tau zoo yog nws cov tshuaj muaj pes tsawg leeg, uas suav nrog cov ntsiab lus alloying uas ua rau nws muaj zog ntawm qhov kub siab dua li cov pa roj carbon monoxide.
| Element | Kev sib xyaw ua ke (%) | Lub hom phiaj |
|---|---|---|
| Cov pa roj carbon (C) | 0.10 - 0.18 | Muab qhov yooj yim zog thiab hardness. |
| Chromium (Cr) | 0.70 - 1.10 | Txhim kho corrosion & oxidation tsis kam, nce lub zog. |
| Molybdenum (hli) | 0.40 - 0.60 | Zoo heev txhim kho siab -kub lub zog thiab nkag siab tsis kam. |
| Manganese (Mn) | 0.40 - 1.00 | Ua kom muaj zog thiab hardenability. |
| Silicon (Si) | 0.10 - 0.35 | Ib qho deoxidizer uas txhim kho lub zog. |
Lub xub ntiag ntawmChromium (Cr)thiabMolybdenum (hli)yog dab tsi cais qhov no raws li qhov qis- alloy steel, tsis yog carbon steel yooj yim.
3. Cov khoom tseem ceeb thiab vim li cas nws thiaj siv rau boilers
Zoo heev Creep Resistance:Qhov no yog cov 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 (xws li, hauv lub boiler) . 1.7380 yog tsim los tiv thaiv qhov deformation nyob rau lub sij hawm ntev (xyoo caum), tiv thaiv cov yeeb nkab tsis ua hauj lwm.
Zoo Siab -Tsub Muaj Zog:Nws khaws nws cov neeg kho tshuab lub zog ntawm qhov kub thiab txias qhov twg carbon steel yuav tsis muaj zog. Nws qhov kev khiav hauj lwm qhov kub thiab txias yog txog li ntawm565℃(1050℃F).
Oxidation Resistance:Cov ntsiab lus chromium muab cov txheej txheem tiv thaiv oxide uas ua rau qeeb qeeb (oxidation) thaum raug cov pa kub thiab cov pa taws.
Zoo Weldability thiab Formability:Thaum nws yuav tsum tau ua ntej- cua sov thiab cov txheej txheem tshwj xeeb, nws yog feem ntau weldable, uas yog qhov tseem ceeb rau kev tsim cov tshuab boiler.
4. Cov ntawv thov ib txwm
Cov hlau no yog tsim tshwj xeeb rau kev siab- muaj cov khoom hauv siab - qhov kub thiab txias:
Superheater Tubes:Cov seem ntawm lub boiler uas cua sov chav tshaj nws qhov chaw saturation.
Reheater Tubes:Re-rhaub cua sov tom qab nws tau dhau los ntawm lub siab -siab turbine.
Siab -Tsub Cov Yeeb Nkab:Cov kab hluav taws xob tseem ceeb thiab cov headers uas nqa cov pa ntawm lub boiler mus rau lub turbine.
Thaum tshav kub kub Exchangersnyob rau hauv xav tau thermal nroj tsuag.
5. Cov qauv tsim nyog rau kev tsim cov yeeb nkab
Boiler kav ua los ntawm 1.7380 tsis yog generic; lawv tau tsim los rau cov txheej txheem thoob ntiaj teb nruj uas txhais tau tias lawv cov tshuaj chemical, mechanical, thiab kev xeem yuav tsum tau ua.
TS EN 10216-2:Seamless steel raj rau lub hom phiaj siab - Kev xa khoom cov xwm txheej - Ntu 2: Tsis yog- alloy thiab alloy steel hlab nrog cov khoom ntsuas kub siab.
ASTM A335 / A335M Cov Lus Qhia:Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Tsub Service. (Qib P12 yog qhov sib npaug).
ASTM A213 / A213M / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / A213M / ASTM A213 / ASTM A213 / A213M / ASTM A213 / A213M / ASTM A213 / A213M / ASTM A213 / A213M / ASTM A213 / ASTM A213 / A213M / ASTM A213 / A213M / ASTM A213M / ASTM A213 / A213M / ASTM A213)Txheem Specification rau Seamless Ferritic thiab Austenitic Alloy-Steel Boiler, Superheater, thiab Thaum tshav kub kub-Exchanger Tubes. (Qib T12 yog qhov sib npaug rau cov raj).
Cov ntsiab lus
| Feature | Kev piav qhia |
|---|---|
| Lub Npe | 1.7380, 13CrMo4-5, A335 P12 |
| Hom khoom | Tsawg-Alloy Steel(Chromium{0}}Molybdenum) |
| Kev siv thawj zaug | Siab - kub thiab siab - siab boiler thiab siab hlab ntsha Cheebtsam. |
| Qhov tseem ceeb Advantage | Superior creep kujthiab lub zog ntawm qhov kub thiab txias mus txog ~ 565 degree. |
| Cov ntsiab lus tseem ceeb | Chromium (Cr) rau oxidation kuj, Molybdenum (Mo) rau lub zog. |
Hauv kev xaus, thaum koj pom "1.7380 Carbon Steel Boiler Pipe," nws yog qhov tseeb dua los xav txog nws."1.7380 Creep-Resistant Alloy Steel Boiler Pipe."Nws yog ib qho tshwj xeeb, siab - cov khoom siv ua haujlwm tseem ceeb rau kev nyab xeeb thiab ua haujlwm tau zoo ntawm cov khoom siv hluav taws xob niaj hnub thiab cov tshuab boiler.
