1. Q: Hauv kev lag luam twg yog Asm A335 p5 steel yeeb nkab feem ntau siv?
A: Vim nws cov siab siab zoo tshaj - kub lub zog thiab oxidation tsis kam, oxidation tsis kam, tshuaj tua kab mob steel yog feem ntau hauv lub zog thiab kev lag luam hnyav. Ib daim ntawv thov tseem ceeb yog nyob rau hauv lub hwj chim nroj tsuag boiler tshuab, tshwj xeeb rau kev tsim cov leeg super ...}} kub, high - siab} kev kub siab. Thib ob, nyob rau hauv Petroleum Refining kev lag luam, nws yog siv los tsim cov txheej txheem ua lag luam nyob rau hauv crackers thiab yaig ntawm high- kub rev vapor. Nws tseem siv nyob rau hauv high - cov tshuab ntsuas kub thiab cov chiv keeb ntawm 500℃thiab 600 degree.
2. Q: Hauv fais fab nroj tsuag boilers, muaj dab tsi cov khoom siv yog p5 steel kav siv rau? Lawv kev ua haujlwm ib puag ncig yog dab tsi?
A: Hauv hwj huam cog boilers, p5 steel kav yog feem ntau siv rau qhov siab- sov seem superheater thiab rejche raj bundles. Cov feem no yog ntawm cov chaw ua haujlwm hnyav tshaj plaws hauv lub boiler, qhov kub}}}}}}}}}}}}}}}} {degree nce ntxiv 580℃mus txog kaum ntawm atmospheres). Ib txhij, sab nrauv ntawm cov hlab yog raug rau cua sov los ntawm high- kub} kub los ntawm corrosive tshauv. P5 Steel cov khoom siv yog precisely ua rau cov raj dej no, thiab kev tiv thaiv corrosion ib puag ncig vim muaj raj tawg.
3 Vim li cas?
A: Yog, tab sis muaj cov kub thiab siab txwv. Lub chromium thiab molybdenum cov ntsiab hauv P5 Hlau muab qee cov tsis kam mus rau hydrogen nres. Nyob rau hauv cov roj Refining Hydroreting chav nyob, P5 Cov Kav Pipes P5 tuaj yeem siv rau qee cov piping ntawm qhov kub hauv qab 400 degree. Txawm li cas los xij, nyob rau hauv ntau dua hydrogen - kev nplua nuj thiab diffuse rau cov methace), reacuse nrog carbides los ua cov methace 450 degree), ua rau Decarburization thiab Microcracks. Rau ntau dua xav tau hydrogen - Cov kev pab cuam corrosion tsis kam, xws li P11 lossis P22, lossis ntau dua cov qib siab, feem ntau raug xaiv. Yog li ntawd, kev siv p5 hauv hydrogen-}}}}} Cov qauv tsim tsim tshwj xeeb (xws li API 941 Curve).
4. Q: Dhau li ntawm lub raj dej nws tus kheej, dab tsi lwm qhov siab -}}}}}}}}}}}}}}}}}}} Siv cov khoom siv yog p5 siv los tsim khoom?
A: Ntxiv rau cov yeeb nkab cov yeeb nkab ncaj, p5 tseem dav siv los tsim cov khoom siab -}}} nws muaj cov fittings rau cov tshuab luam. Cov no suav nrog cuab kav tshob, Tees, Reducers, thiab lub kaus mom tsim tawm rau ASTM A234 WP5. Nws kuj tseem siv tau los tsim cov flanges thiab forged fittings rau astm A182 f5. Cov khoom siv no yuav tsum muaj tib cov khoom siv qib, qib kev ua tau zoo, thiab weldability raws li qhov kev sib txuas lus zoo sib xws nyob rau hauv tag nrho cov pas dej piping. Cov fittings no yuav tsum tau ntsib nruj kev kho cua sov thiab kev xeem ua tsis tau.
5. Q: Dab tsi yog qhov tseem ceeb tsim cov engineers xav txog thaum xaiv P5 cov yeeb nkab steel?
A: Cov kws tsim qauv tsim yuav tsum txiav txim siab ntau yam ntawm cov yam ntxwv thaum xaiv P5 Steel Yeeb Nkab. Thawj yam tseem ceeb yog qhov tsim kub thiab tsim cov siab. Lawv yuav tsum xyuas kom meej tias kev ntxhov siab uas muaj kev ntxhov siab ntawm p5 cov khoom siv nyob rau hauv cov xwm txheej no tau ua tiav lub zog yuav tsum tau ua. Qhov thib ob yog cov xov xwm ib puag ncig. Cov khoom siv oxidation thiab corrosion tsis kam (tshwj xeeb yog leej faj thiab hydrogen corrosion) yuav tsum tau ntsuas kom ntseeg tau tias nws txaus. Thib peb, tus nqi {- ua tau zoo yuav tsum tau txiav txim siab. Thaum lub rooj sib tham txog daim ntawv thov kev xav tau, txoj kev xaiv zoo yuav tsum tau xaiv los ntawm kev sib piv cov nqi ntawm qib (xws li P22 thiab P91). Tsis tas li ntawd, cov khoom siv scinability, weldability, thiab yooj yim ntawm on- lub vev xaib tseem ceeb. Txhua yam ntawm cov xwm txheej no yuav tsum nruj me ntsis rau cov qauv tsim qauv xws li ASMVC.
