Nkag siab txog cov tshuaj lom neeg ntawm F91 yog qhov tseem ceeb rau cov engineers thiab metallurgists ua haujlwm nyob rau hauv kev xav tau cov khoom lag luam siab tshaj plaws hauv kev ua haujlwm siab (qib 91), Cov ntsiab lus muab cov kev ua kom muaj zog tshwj xeeb, tiv taus oxidation, thiab ntev ruaj ruaj nyob rau hauv huab cua sov uas ua rau f91 steel yog li siv tau.
F91 HlauTub rog tus nom siabMuaj pes tsawgs
Lub zog ntawm F91 hlau los ntawm nws cov kev sib xyaw ua ke ntawm alloy cov ntsiab lus, txhua qhov ua rau lub luag haujlwm tshwj xeeb:
Chromium (CR): 8.00% - 9.50%:Chromium yog lub hauv paus f91 tus oxidation thiab corrosion tsis kam, zoo li chav dej los ntawm kev cuam tshuam ntau ntxiv los ntawm kev cuam tshuam ntau dua {} chromium tseem muaj cai tseem ceeb rau cov hlau lub zog thiab tag nrho lub zog, tshwj xeeb ntawm kev nce siab kub {{}
Molybdenum (MO): 0.85% - 1.05}%:Molybdenum yog lub zog txhawb nqa, tshwj xeeb tshaj yog thaum muaj lub zog tiv thaiv kev nyuaj siab thiab tsis muaj zog ntxiv rau kev ua kom muaj zog ntxiv rau hauv cov steel cov siv lead ua qauv .
Vanadium (V): 0.18% - 0.25%:Vanadium yog cov neeg tseem ceeb hauv dej dag zog ua kom muaj carbon thiab n} nws ua ke nrog cov roj av crystal (vC) creep resistance . Qhov no yog ib qho ntawm cov tseem ceeb ntawm kev paub qhov txawv F91 los ntawm kev ua ntej 9 {mo steels.
Niobium (NB): 0.06%- 0.10}%:Niobium (tseem hu ua Columbium, CB) ua haujlwm nrog Vanadium {}}}} {1} {1} {. Niobium carbides / Nitrides yog qhov ruaj khov nyob rau ntawm qhov kub siab heev, muab kev txhawb nqa ntev dua {}}
Cov pa roj carbon (c): 0.08%- 0.12}%:Cov pa roj carbon yog qhov tseem ceeb rau lub zog thiab haj {}} nws ua ke nrog cov carromium, thiab niobium los ua kom muaj zog ntawm cov hlau sib txuas ntawm lub zog ntawm lub zog ntawm lub zog ntawm lub zog tsawg dhau txo lub zog, thaum ntau dhau tuaj yeem cuam tshuam tsis zoo thiab weldability .
Manganese (MN): 0.30%- 0.60}%:Manganese primily primily hauv deoxidation thaum lub sijhawm steelging, kom ua tau cov suab nrov zoo, kom ua tiav Micructired Micrencetructure thiab cov khoom .
Silicon (Si): 0 . {{}}} Nws tseem yog qhov kev tiv thaiv kev nyab xeeb ntawm kev tiv thaiv cov roj ntsha oxide. silicon txhawb mob mentsis kom cov teeb meem daws teeb meem.
Nitrogen (n): 0.030% - 0.070%:Nitrogen yog txhob txwm ntxiv rau F91 steel {{1} Nws ua ke nrog pinadium thiab niobium nitride (N1/koj kev ruaj khov .} m} tswj cov nitrogen qib tseem ceeb heev rau kev ua kom zoo precipitate precipitate ua kev tsim.
F91 Cov Kauj Ruam Hlau
Dag los nag Dag: Tus tub ntxhais ntawm F91 lub zog kub siab nyob hauv qhov kev faib tawm zoo ntawm MX-hom precipitates uas m} v, nb; X=C, N - Tseem Ceeb Vagadium thiab niumbing {{5} block ntawm kev tshem tawm cov kev tshem tawm txawm tias muaj kub heev {}}
Cov tshuaj kho zog zog: chromium, molybdenum, mangying lub crystal lattice thiab silicon yaj lub zog txav, muab lub zog ntawm lub zog .
Kev tsim kho lub zog microbentation: kev sib xyaw ua ke ntawm cov theem uas tsis muaj txiaj ntsig zoo li cov qauv ntawm kev tsim kho cov qauv ntawm cov khoom lag luam uas tsis muaj txiaj ntsig tseem ceeb dua ntawm cov khoom lag luam uas tsis muaj zog ntxiv rau ntawm kev kub ntxhov ntawm kev kub ntxhov ntawm kev kub siab tam sim no.
Oxidation / corrosion Kuj: cov ntsiab lus chromium ua kom tsim kev tsim cov khoom tiv thaiv kab mob, tseem ceeb rau cov pa roj thiab flue gas ib puag ncig {}}
Vim li cas kev nkag siab F91 muaj pes tsawg leeg tseem ceeb heev
Paub txog cov qauv tshuaj tiv thaiv F91 yog qhov tseem ceeb rau ntau yam:
- Xyuas kom cov hlau yog tsim nyog rau qhov tshwj xeeb kub, kev ua kom muaj zog, thiab cov raj roj boiler, cov kav dej Super .
- Tshuaj ntsuam xyuas tshuaj lom neeg yog ib qho yuav tsum tau txheeb xyuas cov ntaub ntawv raws li cov ntaub ntawv ntsuas uas yuav tsum tau muab tso rau hauv kev pabcuam (MT 1 .
- Cov txheej txheem zoo tshaj plaws thiab cov txheej txheem tempering tau tsim los raws li cov ntsiab lus alloy kom ua tiav cov qauv kub uas xav tau thiab nag los.
- Qhov sib xyaw ua rau muaj kev cuam tshuam cov txheej txheem.} kev kho kom tsis txhob tawg thiab ua kom sov.
- Lub Sij Hawm Sij Hawm Ntev: Nkag siab txog li cas cov ntsiab lus cuam tshuam rau cov hlau tus cwj pwm ntawm kev pabcuam, tshwj xeeb tshaj yog muaj lub neej nkag mus thiab microstration stability.
Hauv ntsiab lus, cov tshuaj lom neeg muaj pes tsawg leeg ntawm F91 steel yog cov ntawv qhia txog kev ua tau zoo heev los ntawm cov khoom sib npaug ntawm cov khoom siv tseem ceeb ntawm cov khoom siv tseem ceeb ntawm no.
