1. Cov ntawv thov thiab kev siv tseem ceeb
12Cr2MoWVTiB, feem ntau paub los ntawm nws txoj kev lag luamG102, yog Suav -tsim, qis- carbon bainitic cua sov- tiv taus steel. Nws thawj daim ntawv thov yog nyob rau hauv siab -kub seem ntawmthee- hluav taws xob cog boilers, tshwj xeeb hauvultra-supercritical (USC) units. Feem ntau koj yuav pom nws siv hauv:
High -Tub kub Superheaters thiab Reheaters:Cov no yog cov hlab ntsha uas nyob rau hauv qhov kub tshaj plaws ntawm lub boiler, qhov twg chav yog rhuab mus rau nws qhov kawg kub ua ntej xa mus rau lub turbine. G102 yog qhov zoo heev rau cov ntu no.
Main Steam thiab Kub Reheat Chav Piping:Hauv qee qhov kev tsim, nws yog siv rau cov kav dej uas nqa qhov siab no - lub zog ntawm lub boiler mus rau lub turbine.
Nws qhov ntsuas kub ua haujlwm yog txog 600℃- 620 degree, ua rau nws yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob siab heev uas ua haujlwm ntawm kev ua tau zoo dua.
2. Qhov tseem ceeb thiab cov txiaj ntsig zoo
Tus tsim ntawm G102 muab ob peb qhov tseem ceeb zoo dua li cov pa qis- alloy steels:
Zoo heev High -Temperature Strength:Nws suav nrog ib qho sophisticated"multi-element composite strengthening"tshuab. Alloying cov ntsiab lus xws li Tungsten (W) thiab Molybdenum (Mo) muab cov tshuaj tiv thaiv kom muaj zog, thaum Vanadium (V), Titanium (Ti), thiab Niobium (Nb) tsim cov carbides ruaj khov thiab nitrides uas tiv thaiv creep deformation ntawm qhov kub thiab txias. Boron (B) txhim khu kev qha hardenability thiab stabilizes microstructure.
Zoo Oxidation Resistance:Kev sib xyaw ua ke ntawm Chromium (Cr) thiab Silicon (Si) cov ntsiab lus muab kev tiv thaiv txaus rau scaling thiab oxidation hauv chav ib puag ncig ntawm nws qhov kev pabcuam kub.
Zoo Thermal Stability thiab Microstructural Integrity:Cov hlau tuav nws cov bainitic microstructure nyob rau lub sij hawm ntev nyob rau hauv kev ntxhov siab, tiv thaiv kev tsim ntawm undesirable theem uas yuav ua rau embrittlement.
Tus nqi -Kev ua tau zoo:Piv rau cov khoom kim heev austenitic stainless hlau (xws li TP347H lossis Super304H) xav tau rau qhov kub zoo sib xws, G102 yog ib qhoferritic hlau, uas txhais tau hais tias nws muaj qis coefficient ntawm thermal expansion, thermal conductivity zoo dua, thiab yog pheej yig dua. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj nyiaj txiag.
3. Txoj Kev Loj Hlob thiab Lub Luag Haujlwm Yav Tom Ntej
Thaum lub ntiaj teb fais fab kev lag luam tab tom hloov mus rau lub zog tauj dua tshiab, lub zog thermal siab tseem tseem ceeb heev rau daim phiaj kev ruaj ntseg. Txoj kev loj hlob zeem muag rau G102 yog nuanced:
Mature thiab tsim Niche:G102 yog ib yam khoom zoo- tsim thiab paub tab, tshwj xeeb tshaj yog nyob rau hauv Tuam Tshoj lub zog hluav taws xob. Rau qhov tshiab -kev ua tau zoo, qis-emission (HELE) thee- cov nroj tsuag raug rho tawm haujlwm, tshwj xeeb tshaj yog nyob rau hauv cov teb chaws tsim, nws tseem yog ib qho tseem ceeb thiab raug nqi- cov khoom siv tau zoo rau cov ntu boiler tshwj xeeb.
Kev sib tw los ntawm Cov Qib Tshiab:Nws txoj hauj lwm yog sib tw los ntawm cov qib tshiab, zoo dua martensitic qib zoo liP91thiab tshwj xeeb tshaj yogP92. These steels offer higher creep strength, allowing for thinner pipe walls and lighter components in new designs. For the highest temperature applications (>620 degree), austenitic steels yog qhov tseem ceeb.
Lub luag hauj lwm hauv Plant Life Extension:Lub luag haujlwm tseem ceeb yav tom ntej rau G102 nyob hauvkev tu, kho, thiab lub neej- txuas ntxiv ntawm cov chaw tsim hluav taws xob uas twb muaj lawm. Raws li ntau txhiab teev ntawm kev pabcuam, kev nkag siab txog nws tus cwj pwm kev laus thiab siv nws hloov pauv yog qhov tseem ceeb. Nws yuav nyob twj ywm tus neeg tseem ceeb hauv lub ntiaj teb cov nkoj ntawm USC fais fab chaw nres tsheb rau ntau xyoo tom ntej.
Lub luag haujlwm txwv nyob rau tom ntej -Tsev Kawm Txuj Ci:Rau yav tom ntej advanced ultra-supercritical (A-USC) cov nroj tsuag tsom rau chav kub siab tshaj 700 degree, nickel-raws li superalloys yuav tsum tau, thiab G102 yuav tsis siv.
Hauv cov ntsiab lus,12Cr2MoWVTiB (G102)yog ib qho tseem ceeb hauv keeb kwm, siab - steel kev ua tau zoo uas ua tiav qhov sib txawv ntawm cov pa qis - alloy steels thiab kim austenitics. Nws lub neej yav tom ntej tsis yog nyob rau hauv pem hauv ntej thev naus laus zis tab sis hauv kev txhawb nqa kev nyab xeeb, ua haujlwm tau zoo, thiab ntev ntev - kev ua haujlwm ntev ntawm lub ntiaj teb cov thev naus laus zis thev naus laus zis thev naus laus zis.
