Core Cheebtsam: Hlau thiab Vanadium
Cov tshuaj muaj pes tsawg leeg ntawm ferrovanadium (FeV) yog tsim nyob ib ncig ntawm ob lub ntsiab lus: vanadium (V), active alloying caij, thiab hlau (Fe), sib npaug hlau. Kev lag luam ferrovanadium muaj kwv yees li 35% mus rau 85% vanadium nyob ntawm qib, nrog cov hlau ua cov seem tom qab vanadium thiab impurities. Vim hais tias vanadium yog lub luag haujlwm tseem ceeb, qib kev xaiv ncaj qha cuam tshuam cov ntsiab lus vanadium: FeV40, FeV50, FeV60, FeV75 thiab FeV80 yog cov qib lag luam tshaj plaws, sib xws rau cov ntsiab lus vanadium nominal txog 40%, 50%, 60%, 75% thiab 8. Piv txwv li, FeV50 muaj nyob ib ncig ntawm 50% vanadium thiab 48-49% hlau, thaum FeV80 muaj txog 80% vanadium rau kev ua tau zoo tshaj plaws hauv high-end steel daim ntaub ntawv.
Qib Lub Rooj Sib Tham
| Qib | Nominal Vanadium Cov ntsiab lus | Hlau (Balance) | Kev siv yam |
|---|---|---|---|
| FeV 40 | Txog 40% | Tshuav | General alloying, nqi -sensitive steel |
| FeV 50 | Txog 50% | Qhov nyiaj tshuav (kwv yees . 48-49%) | Standard micro{0}} alloying ntawm HSLA steel |
| FeV 60 | Txog 60% | Tshuav | Siab dua -vanadium alloying |
| fwv 75 | Txog 75% | Tshuav | Rebar, rails, cuab yeej steels |
| fwv 80 | Txog li 80% | Tshuav | High- steels kawg, aerospace master alloys |
Tag nrho cov vanadium ntau thoob plaws hauv tsev neeg cov khoom yog 35% mus rau 85%, thiab qhov tshwj xeeb muaj pes tsawg leeg ntawm txhua qhov ntau yog tswj hwm cov qauv qib, nrog rau ntau yam nyob ntawm lub teb chaws lossis tuam txhab specification thov.
Trace Impurities thiab Lawv Tswj
Ntxiv rau vanadium thiab hlau, ferrovanadium muaj cov pa roj carbon (C), silicon (Si), sulfur (S), phosphorus (P) thiab txhuas (Al), uas yog tswj kom ua tau raws qib - cov qauv tshwj xeeb. Sulfur thiab phosphorus yog qhov zoo tshaj plaws saib: ob qho tib si muaj kev phom sij rau steel zoo - leej faj ua rau kub luv thiab phosphorus embrites grain ciam teb - yog li lawv nruj me ntsis txwv nyob rau hauv siab -qib FeV. Aluminium originates los ntawm aluminothermic txo cov txheej txheem siv los ua ferrovanadium; residual aluminium yog khaws cia nyob rau hauv qib qis destined rau huv-steel daim ntaub ntawv. Cov neeg yuav khoom yuav tsum qhia meej qhov siab tshaj plaws impurity txwv ib qib thiab xyuas lawv nrog daim ntawv pov thawj ntawm kev tshuaj xyuas.
Yuav ua li cas Composition cuam tshuam rau kev ua tau zoo
Qhov tshwj xeeb muaj pes tsawg leeg txiav txim siab cov alloy qhov kev ua tau zoo hauv cov hlau: cov ntsiab lus vanadium teeb tsa lub peev xwm ntxiv dag zog, vim vanadium tsim cov carbides zoo thiab nitrides uas ua kom cov nplej zoo dua thiab muab nag lossis daus hardening. Cov qib siab dua -vanadium qib (FeV75, FeV80) xa ntau zog ntxiv rau ib kilogram ntxiv thiab nyiam qhov uas tus nqi hnyav, xws li micro-alloyed rebar, rails thiab cuab yeej steels. Impurity tswj txiav txim siab huv: siab sulfur los yog phosphorus defeats lub hom phiaj ntawm micro-alloying los ntawm degrading toughness. Rau lub hom phiaj muab vanadium ntxiv, tus neeg yuav khoom piv tus nqi ib kilogram ntawm vanadium xa, uas suav nrog qib tus nqi thiab impurity- cuam tshuam txog kev pheej hmoo zoo.
Txoj kev tsim khoom
Ferrovanadium yog tsim los ntawm aluminothermic txo ntawm vanadium pentoxide (V₂O₅), qhov twg txhuas hlau txo cov oxide rau vanadium nyob rau hauv ib tug muaj zog exothermic cov tshuaj tiv thaiv, nrog hlau ntxiv raws li seem los yog hlau oxide los tsim cov hlau. Qee cov khoom siv silicothermic txo nrog ferrosilicon. Cov txheej txheem yields ib pob hlau uas yog crushed thiab tshuaj ntsuam rau cov neeg siv khoom loj feem, feem ntau 10-50 hli rau ladle ntxiv, nrog nplua thiab hmoov muaj rau cov ntawv tshwj xeeb. Qhov zoo ntawm cov khoom kawg yog nyob ntawm qhov purity ntawm V₂O₅ feedstock thiab kev tswj ntawm tus nqi txo.
Kev xav txog kev yuav khoom
Thaum qhia txog ferrovanadium, qhia qib (FeV40 txog FeV80), qhov tseeb ntawm vanadium ntau yam, qhov siab tshaj plaws impurity txwv (tshwj xeeb tshaj yog S thiab P), thiab qhov loj me. Paub meej tias lub hauv paus kev tshuaj xyuas - feem ntau yog tshuaj ntsuam xyuas ib qho nrog rau thib peb -kev xeem ntawm cov khoom xa tuaj. Vim tias vanadium yog ib qho khoom muaj txiaj ntsig siab, qhov sib txawv me me hauv qib thiab cov ntsiab lus tsis huv txhais ua qhov sib txawv ntawm tus nqi, yog li qhov kev qhia tshwj xeeb yuav tsum ua raws li qhov xav tau ntawm metallurgical tiag tiag es tsis yog qib siab tshaj plaws.
FAQ
Q1: Tus lej hauv FeV80 txhais li cas?
Nws qhia txog cov ntsiab lus vanadium nominal: FeV80 muaj txog li 80% vanadium, nrog hlau raws li qhov sib npaug. Cov lej siab dua txhais tau tias cov ntsiab lus vanadium ntau dua.
Q2: Vim li cas sulfur thiab phosphorus txwv hauv ferrovanadium?
Ob leeg muaj teeb meem hauv cov hlau: leej faj ua rau kub luv thiab phosphorus txo cov tawv nqaij. High-qib FeV ua rau lawv nyob rau theem qis los tiv thaiv steel zoo.
Q3: Kuv yuav tsum xaiv qib twg rau rebar micro-alloying?
Cov qib siab -vanadium qib xws li FeV75 lossis FeV80 yog ib txwm muaj rau rebar vim tias qhov sib ntxiv ntawm vanadium me me thiab yuav tsum raug xa tawm kom raug nrog cov khoom siv impurity tsawg.
Q4: ferrovanadium ua li cas?
Feem ntau los ntawm aluminothermic txo ntawm vanadium pentoxide nrog hlau ntxiv los ua cov hlau, ua raws li crushing thiab tshuaj ntsuam kom loj. Qee lub peev xwm siv silicothermic txo.
Q5: Qhov loj npaum li cas yog ferrovanadium muab rau hauv?
Cov ntaub ntawv feem ntau suav nrog cov pob me me xws li 10-50 hli rau cov ladle ntxiv, ntxiv rau cov hmoov thiab qhov tshwj xeeb ntawm qhov kev thov. Txheeb xyuas qhov loj me me nrog tus neeg xa khoom.