Dab tsi yog qhov ntsuas kub txwv rau T91 cov khoom siv

Dab tsi yog qhov ntsuas kub rau T91 cov khoom siv?

I. Siv qhov kub ntev
Cov tshuaj tiv thaiv: 580 degree ~ 600 degree, uas yog qhov kev txwv sab sauv ntawm kev nyab xeeb siv ntawm T91 hauv kev ua haujlwm kub.
Txheem: ASME code pom zoo tias nws siv rau boiler rhawv saum cov raj (piv txwv li kev khiav tsheb loj) nrog cov me me li 600 degree.
Thib ob, lub sij hawm luv luv ncov kub
Lub sij hawm luv luv kam: hauv kev ua haujlwm tsis txuas ntxiv mus hauv qab 620 degree, tab sis yuav tsum ua kom nruj kev pheej hmoo ntawm oxidation thiab nkag.
III. Qhov tseem ceeb rau kev txwv kub
Oxidation tsis kam:
Qhov siab tshaj 600 degree, tus nqi ntawm cov xim oxidation nrawm, thiab oxide cov tawv nqaij yuav ua rau spalling thiab raj ntsa thinning.
Kev Ua Yeeb Ncauj:
Thaum muaj 600 degree, T91 creep tracture lub zog (xws li 10 ^ 5 teev puas muaj zog) yog li 80 ~ 100 mpa; Kub nce mus rau 620 degree, lub zog ntawm kev poob qis, yuav ua rau cov yeeb nkab ntse, yuav ua rau cov yeeb nkab tsis ua haujlwm.
IV. Piv nrog lwm cov ntaub ntawv
T91 VS T92:
T92 yog qhov zoo los ntawm kev ntxiv tungsten (W), kev pabcuam kub ntev tuaj yeem nce mus rau 620 degree, haum rau cov chav nyob siab dua.
V. Kev ceev faj hauv cov ntawv thov siv
Tsim cov paj ntaub: nws raug nquahu tias qhov kev ua haujlwm tiag tiag yog 10 ~ 20 degree qis dua qhov kev pheej hmoo ntawm cov khoom siv laus thiab kev npaj txhij txog kev ua haujlwm.
Kev hloov kho ib puag ncig: nyob rau hauv ib puag ncig uas muaj cov sulphur lossis cormoride ions, kev txiav txim siab ntxiv ntawm cov neeg muaj kev cuam tshuam ntawm kev ua kom zoo, qhov siab kub yuav tau siv tus nqi txo.
Ntsiab lus: A213 T91 muaj kev txwv kub ntev ntawm 600 degree thiab lub sijhawm luv luv ntawm tsis muaj ntau tshaj 620 degree. Nws yog qhov haum rau cov kev kub-kub ntawm cov subcritical / supercritical boilers, tab sis nws yuav tsum tau tsim los ua ke nrog kev ua haujlwm siab thiab ib puag ncig.