1. Kev txheeb xyuas cov khoom siv thiab cov qib sib npaug
Tus lej1.7386precisely txheeb xyuas cov hlau muaj pes tsawg leeg. Nws feem ntau sib npaug cov qauv thiab qib yog:
EN / DIN Lub Npe: 13CrMo4-5
UNS: K11562
ASTM / ASME: A335 P12(rau Seamless Ferritic Alloy-Steel Pipe rau High-Tsev Kev Pabcuam)
ASTM / ASME:A213 T12 (rau Seamless Ferritic Alloy-Steel Boiler, Superheater, thiab Thaum tshav kub kub-Tub Exchanger)
GOST:12KhM (12 hli)
2. Chemical Composition (Tswj %)
Lub "CrMo" nyob rau hauv nws lub npe los ntawm nws cov ntsiab lus tseem ceeb alloying:
Cov pa roj carbon (C):0.10 - 0.15% (Muab lub zog)
Chromium (Cr):0.70 - 1.00% (Txhim kho oxidation & corrosion kuj ntawm qhov kub thiab txias)
Molybdenum (Molybdenum):0.40 - 0.60% (Txhim kho siab -qhov kub thiab txias tsis kam)
Manganese (Mn): 0.40 - 0.70%
Silicon (Si): 0.15 - 0.35%
Phosphorus (P):Tsawg dua lossis sib npaug li 0.025%
Sulfur (S):Tsawg dua lossis sib npaug li 0.025%
3. Cov khoom tseem ceeb thiab vim li cas nws thiaj siv rau boilers
Qhov no alloy yog tsim tshwj xeeb rau cov ntawv thov uas muaj qhov kub thiab txias.
Zoo heev Creep Strength:Qhov no yog nws 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 . 1.7386 tuaj yeem tiv taus cov xwm txheej no rau lub sijhawm ntev yam tsis ua tsis tiav.
Zoo Oxidation Resistance:Cov ntsiab lus chromium tsim ib qho chaw ruaj khov, tiv thaiv oxide txheej ntawm qhov chaw, tiv thaiv kom nrawm nrawm thiab degradation hauv chav ib puag ncig.
Zoo Weldability thiab Formability:Nws tuaj yeem welded thiab fabricated siv cov txheej txheem txheej txheem, txawm hais tias nws feem ntau yuav tsum tau ua ntej - cua sov thiab tom qab -weld heat treatment (PWHT) kom tsis txhob tawg thiab kho cov khoom siv microstructure.
Stable Microstructure:Nws tuav nws lub zog thiab tsis ua nkig thaum lub sijhawm siv nyob rau hauv nws qhov ntsuas kub tsim.
4. Cov ntawv thov ib txwm
Cov kav dej thiab cov raj ua los ntawm 1.7386 yog siv hauv:
Boiler Superheaters thiab Reheaters:Cov seem ntawm lub boiler uas cua sov chav rau nws qhov kub siab tshaj plaws.
High -Tsub Kab Kab:Cov kav dej uas nqa cov pa ntawm lub boiler mus rau lub turbine.
Kub Exchangers thiab Condenser.
Cov nkoj siabrau siab -kev pabcuam kub.
Tshuaj thiab Petrochemical Cogqhov twg siab -kub txheej txheem tshwm sim.
5. Qhov kub thiab txias
Hom Kev Pab Cuam Siab Tshaj Plaws:Mus txog565℃(1050℃F).
Tshaj li qhov kub thiab txias, cov alloys muaj zog zoo li 1.7380 (10CrMo9-10 / A335 P22) lossis stainless hlau feem ntau yog siv.
6. Muaj cov ntaub ntawv yeeb nkab
Seamless (SMLS):Qhov no yog daim ntawv ntau tshaj plaws thiab nyiam tshaj plaws rau kev siv siab -siab boiler, vim nws tsis muaj qhov ntev weld seam, uas yog qhov muaj peev xwm ua tsis tiav.
Electric Resistance Welded (ERW):Tej zaum yuav siv tau rau cov ntawv thov tseem ceeb tsawg lossis kev ntsuas qis dua.
Cov lus xaus
| Feature | Kev piav qhia |
|---|---|
| Lub Npe | 13CrMo4-5 / Cr-Mo Steel |
| Thawj Standard | TS EN 10216-2 Seamless raj rau lub hom phiaj siab) |
| Ntsiab Alloying Elements | Chromium (~ 1%), Molybdenum (~ 0.5%) |
| Main Advantage | High Creep Strength nyob rau hauv siab kub |
| Kev siv yam | Boiler Superheaters, Siab -Tsub Cov Kav Dej |
| Max Service Temp | ~ 565℃(1050℃F) |
Daim ntawv tseem ceeb rau Kev Muag Khoom thiab Fabrication
Thaum txiav txim los yog ua hauj lwm nrog 1.7386 boiler yeeb nkab, xyuas kom meej tias nws ua raws li cov txheej txheem siab cov cuab yeej (xws liTS EN 10216-2). Rau fabrication, tshwj xeeb tshaj yog vuam, ib txwm ua raws li cov txheej txheem vuam tsim nyog uas qhia txog qhov yuav tsum tau muaj:
Ua ntej - cua sov(feem ntau yog 150-250 degree)
Tshaj tawm -Kev kho cua sov (PWHT)/ Kev ntxhov siab (feem ntau ntawm 650-700 degree)
Qhov no ua kom muaj kev ncaj ncees thiab kev nyab xeeb ntawm kev teeb tsa zaum kawg hauv siab -siab, siab - kub boiler systems.
