1. Cov lus txhais thiab cov yam ntxwv tseem ceeb
15CrMoG yog aChromium-Molybdenum (Cr-Mo) alloy steel yeeb nkabtshwj xeeb tsim los rau siab - kub thiab siab - kev pabcuam siab. "G" nyob rau hauv nws lub npe sawv cev rau "Boiler" (los ntawm Suav tus qauv "Guo"), qhia nws thawj siv nyob rau hauv boiler thiab siab hlab ntsha daim ntaub ntawv.
Nws tus yam ntxwv tseem ceeb yog nwszoo heev siab - kub lub zog thiab creep kuj. Qhov no yog ua tiav los ntawm nws cov tshuaj muaj pes tsawg leeg:
Chromium (Cr):~ 0.80-1.10% - Muab kev txhim kho oxidation thiab corrosion kuj ntawm qhov kub thiab txias.
Molybdenum (Molybdenum):~ 0.45-0.60% - Txhim khu lub zog ntawm qhov kub thiab txias thiab txhim kho kev nkag siab.
Qhov kev sib xyaw ua ke no ua rau 15CrMoG yog cov khoom siv txhim khu kev qha rau kev ua haujlwm ntev - nyob rau hauv qhov xav tau ib puag ncig thermal.
2. Cov ntawv thov thiab kev siv tseem ceeb
15CrMoG kav yog feem ntau siv nyob rau hauv lubhluav taws xob tsim thiab petrochemical kev lag luamqhov twg cov Cheebtsam raug rau qhov kub thiab txias.
Fais fab nroj tsuag Boilers:Lawv yog cov khoom siv rau kev tsim khoom:
Superheater Tubes:Uas cua sov saturated chav los ua superheated chav.
Reheater Tubes:Uas reheat chav los ntawm lub turbine kom efficiency.
Siab -Tub kub taub hau thiab chav kav dej:Uas sau thiab thauj cov siab -siab zog.
Main Steam Pipes:Cov hlab ntsha tseem ceeb nqa chav los ntawm lub boiler mus rau lub turbine.
Petrochemical Kev Lag Luam:
Thaum tshav kub kub Exchanger Tubes:Nyob rau hauv reactors thiab tshav kub exchangers uas ua hauj lwm ntawm siab kub.
Txheej Txheem Pipeline:Rau kev thauj khoom siab -kub roj, roj, thiab lwm yam txheej txheem kua.
Cov nkoj siab:Rau kev tsim cov hlab ntsha uas yuav tsum tiv taus ob qho tib si siab thiab kub.
3. Qhov tseem ceeb thiab cov txiaj ntsig zoo
Kev siv dav dav ntawm 15CrMoG yog tsav los ntawm ntau yam kev pabcuam thiab nyiaj txiag tseem ceeb:
Zoo heev High -Temperature Strength:Nws tuav nws cov neeg kho tshuab kev ncaj ncees thiab tsis soften los yog deform yooj yim nyob rau hauv tas li siab - kub kev pab cuam (feem ntau mus txog 550-580℃).
Superior Creep Resistance: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 . 15CrMoG muaj kev tiv thaiv zoo rau qhov tshwm sim no, ua kom ntev - lub sij hawm kev nyab xeeb ntawm cov qauv.
Zoo Thermal Stability thiab Oxidation Resistance:Cov ntsiab lus chromium tsim ib qho ruaj khov, tiv thaiv oxide txheej ntawm qhov chaw, tiv thaiv kom nrawm nrawm thiab degradation hauv qhov chaw oxidizing.
Zoo Weldability thiab Processability:Piv nrog rau qib siab dua -qib alloy steels, 15CrMoG muaj qhov zoo weldability. Nrog rau kev tsim nyog ua ntej- cua sov thiab tom qab-weld heat treatment (PWHT), nws tuaj yeem tsim kev ntseeg siab rau hauv cov khoom sib txuam.
Tus nqi -Kev ua tau zoo:Rau nws qhov kev ua tau zoo, 15CrMoG muaj qhov zoo sib npaug ntawm tus nqi thiab muaj peev xwm. Nws muab qhov kev ua tau zoo tseem ceeb ntawm cov pa roj carbon steel tsis muaj tus nqi siab ntawm 9-12% chromium steels.
4. Kev Txhim Kho Kev Zej Zog thiab Kev Lag Luam Yav Tom Ntej
Lub neej yav tom ntej ntawm 15CrMoG yog zoo li lub ntiaj teb no lub zog toj roob hauv pes, uas yog evolving mus rau ntau dua efficiency thiab qis emissions.
Sustained Demand nyob rau hauv Modernizing Power Infrastructure:
Hauv ntau lub tebchaws tsim, tshiab sub- tseem ceeb thiab supercritical thee- cov chaw tsim hluav taws xob tseem tab tom tsim, qhov twg 15CrMoG tseem yog cov khoom siv tseem ceeb rau siab - qhov kub thiab txias.
Nws tseem yuav pom qhov kev thov siab rau kev saib xyuas thiab hloov cov khoom siv hauv cov chaw tsim hluav taws xob uas twb muaj lawm thoob ntiaj teb.
Lub luag haujlwm hauv Kev Hloov mus rau Biomass thiab Pov Tseg-rau-Zoo:
Raws li lub ntiaj teb hloov mus rau lwm qhov chaw siv hluav taws xob, biomass fais fab nroj tsuag thiab cov khib nyiab incineration tau dhau los ua ntau dua. Cov chaw no yuav tsum tau siab -kub boiler tubing, thiab 15CrMoG yog qhov tsim nyog thiab tus nqi- kev xaiv zoo rau ntau yam ntawm lawv cov khoom.
Kev sib tw thiab niche tshwj xeeb:
Rau cov tshiab ultra-supercritical (USC) fais fab nroj tsuag nrog siab dua chav tsis muaj zog (kub> 600℃, siab> 25 MPa), siab tshaj steels xws liP91 (10Cr9Mo1VNb) thiab P92nyiam vim lawv lub zog superior.
Yog li ntawd, daim ntawv thov ntawm 15CrMoG tau dhau los ua tshwj xeeb. Nws lub khw tseem ceeb yuav nyob twj ywm hauvsupercritical thiab sub-cov chaw tsim hluav taws xob tseem ceeb, cov khoom siv hluav taws xob rov qab ua kom sov (HRSGs) hauv cov pa roj- cov nroj tsuag raug rho tawm haujlwm, thiab kev lag luam petrochemical, qhov twg nws qhov kev ua tau zoo - rau - tus nqi piv tsis zoo.
Kev txhim kho thev naus laus zis:
Cov kev tsim kho yav tom ntej yuav tsom mus rau kev ua kom zoo ntawm cov txheej txheem tsim khoom (xws li, txhim kho kev kho cua sov, kev tsim cov hlau huv) txhawm rau txhim kho qhov sib xws, kev ua neej ntev, thiab kev ntseeg siab ntawm 15CrMoG hlab, kom ntseeg tau tias lawv tau ua raws li ib txwm muaj - nruj dua kev nyab xeeb thiab ib puag ncig cov qauv.
Xaus
Hauv cov ntsiab lus,15CrMoG steel yeeb nkabyog ib qho tseem ceeb heev - cov khoom kub uas tau ua lub hauv paus ntawm lub tshuab hluav taws xob thermal rau ntau xyoo lawm. NwsTshwj xeeb creep zog thiab oxidation tsis kam ntawm siab kubua rau nws indispensable rau boiler thiab siab hlab ntsha daim ntaub ntawv. Txawm hais tias qhov nce ntawm cov khoom siv siab tuaj yeem txwv nws lub luag haujlwm hauv kev txiav ntau tshaj - ntug fais fab nroj tsuag, nwspov thawj kev ntseeg siab, kev ua tau zoo, thiab tus nqi -effectivenessxyuas kom meej tias nws yuav nyob twj ywm ib qho tseem ceeb thiab dav siv cov ntaub ntawv nyob rau hauv lub ntiaj teb no lub zog thiab kev lag luam sectors rau lub neej yav tom ntej, tshwj xeeb tshaj yog nyob rau hauv cov nroj tsuag modernization, biomass zog, thiab lub robust petrochemical kev lag luam.
