Ferrovanadium hauv Automotive thiab Energy Applications: Qib thiab Metallurgical Function
Tso lus
Ferrovanadium Qib thiab Microalloying Mechanism
Ferrovanadium (FeV) yog ib tug tswv alloy tau los ntawm aluminothermic txo ntawm vanadium pentoxide los yog los ntawm carbothermic kev kho mob ntawm vanadium- bearing slag. Ob qib tswj hwm kev lag luam ntau: FeV80, nqa 78-82% V, thiab FeV50, nqa 48-52% V. ISO 5451 teeb tsa cov kev qhia tshwj xeeb thiab cov xwm txheej ntawm kev xa khoom rau ferrovanadium muab rau steelmakers, thiab ASTM A1023 / M10 cov khoom siv tib lub rooj thiab A10 kev xav tau. Vanadium dissolves tag nrho hauv cov kua hlau thiab, thaum lub sij hawm txias, precipitates li vanadium carbonitride V (C, N) particles uas pin austenite lis ciam teb thiab tsa lub recrystallisation-stop kub. Ntxiv ntawm 0.02-0.15% V yog raug rau kev tswj-dov sawb, phaj thiab cov khoom ntev; saum toj no roughly 0.15% V lub marginal nce nyob rau hauv nag lossis daus ntxiv dag zog rau flattens vim carbonitride coarsening offsets cov txiaj ntsig.
Automotive Applications: Sawb, Forgings thiab Springs
High-lub zog qis- cov ntawv hlau ua rau ASTM A1011/A1011M npog cov qib nrog cov txiaj ntsig tsawg kawg ntawm 340 MPa txog 550 MPa, thiab vanadium yog ib qho ntawm cov kev xaiv microalloying siv mus txog rau sab sauv yam tsis muaj kev kho cua sov ntxiv. Microalloyed forging steels xws li 38MnVS6 cia siab rau vanadium los tsim carbonitrides thaum lub caij txias tom qab forging, uas tshem tawm qhov xav tau quench -thiab- kub cycles ntawm crankshafts, txuas rods thiab steering knuckles. Caij nplooj ntoos hlav steels nyob rau hauv 51CrV4 tsev neeg, tus qauv raws li EN 10089 rau kub-rolled caij nplooj ntoos hlav steel, nqa roughly 0.1-0.2% V los txhim kho sag kuj ntawm elevated kev pab cuam kub. Cov cuab yeej ua haujlwm kub xws li AISI H13 siv li 1% V ua ke nrog 5% Cr thiab 1.5% Mo rau tempering kuj nyob rau hauv tuag casting thiab extrusion tuag.
Hluav taws xob Sector: Flow Battery Electrolytes thiab Catalysts
Lub roj teeb vanadium redox ntws lub zog khaws cia lub zog hauv ob lub kua electrolytes: V2+/V3+ ntawm sab tsis zoo thiab VO2+/VO2+ nyob rau sab zoo, nrog qhib- hluav taws xob hluav taws xob hluav taws xob ze ntawm 1.26 V. Electrolytes feem ntau npaj tau li ntawm 1.6 M tag nrho vanadium sulfate, uas pib los ntawm vanadium sulfur. Vanadyl sulfate, VOSO4. Vim hais tias ob qho tib si ib nrab -cells siv tib lub caij, hla- cov kab mob sib kis tsis ua kom muaj peev xwm, uas yog vim li cas lub voj voog lub neej dhau 10,000 lub voj voog yog qhov tseeb. Nyob rau sab catalyst, V2O5-raws li kev sib cuag masses oxidise sulfur dioxide rau sulfur trioxide ntawm 400-450 C hauv sulfuric acid cov nroj tsuag, thiab V2O5-WO3 / TiO2 formulations yog siv rau kev xaiv catalytic txo cov nitrogen oxides ntawm 300-400 C hauv flue roj tsheb ciav hlau.
Nkag mus kuaj thiab cov ntsiab lus yuav khoom
Ferrovanadium yog pauv hauv qhov loj me ntawm 10-50 mm lossis 10-100 mm thiab ntim rau hauv cov nruas steel ntawm 100-250 kg lossis ib lub hnab loj loj. Vanadium cov ntsiab lus raug txheeb xyuas los ntawm redox titration nrog poov tshuaj permanganate lossis los ntawm X-ray fluorescence ntawm chav kuaj ua haujlwm rau ISO/IEC 17025, nrog txhuas, silicon, carbon, sulfur thiab phosphorus qhia raws li cov khoom seem. Aluminium saum toj ntawm qib txwv yog ib qho kev tawm - cov khoom tshwj xeeb vim tias nws nce qib kev suav nrog hauv qib huv-steel. Kev khaws cov dej noo thiab kev nplua nyiaj yog qhov tseem ceeb ntawm kev pheej hmoo: cov khoom ntub dej tuaj yeem poob cov yam ntxwv tsis muaj dej thiab oxidise ntawm qhov chaw, yog li cov nruas thiab hnab yuav tsum nyob twj ywm kom txog thaum lub hopper them.
| Khoom | FeV80 (tus qauv) | FeV50 (tus qauv) | Lus ceeb toom |
|---|---|---|---|
| Vanadium | 78-82% | 48-52% | Qib hauv paus rau tus nqi |
| Aluminium | 1.5-2.5% | 1.5-3.0% | Tswj kom huv si hlau |
| Qhov ntau thiab tsawg | 10-50 hli | 10-100 hli | Crushing thiab tshuaj ntsuam |
| Ntim | 100-250 kg drums | 1t loj | Sealed, tiv thaiv noo noo |
Cov lus nug nquag
Q:Dab tsi yog qib ferrovanadium yuav tsum muaj steel zeb xaiv rau HSLA ntawv?
A: FeV80 yog qhov zoo dua qhov uas tus nqi sib npaug nyiam qhov siab vanadium concentration thiab qis freight ib chav tsev ntawm vanadium; FeV50 haum rau cov cua sov me me thiab tso cai rau kev txiav kom zoo ntawm qhov sib ntxiv.
Q:Dab tsi ntxiv vanadium muab lub zog zoo tshaj plaws hauv kev tswj -rolled strip?
A: Feem ntau cov lag luam HSLA sawb zaum ntawm 0.02% thiab 0.15% V, nrog rau daim duab qhia tseeb los ntawm cov ntsiab lus nitrogen, tus nqi txias thiab lub hom phiaj yield zog raws li ASTM A1011 / A1011M.
Q:Puas yog ferrovanadium interchangeable nrog vanadium nitride?
A: Tsis ncaj qha. Vanadium nitride ntxiv nitrogen ntxiv rau vanadium, yog li cov nitrogen tshuav nyiaj li cas ntawm cov cua sov yuav tsum tau muab xam ua ntej hloov, thiab tus nqi ntawm ib chav tsev ntawm vanadium txawv.
Q:Cov ntsiab lus vanadium dab tsi yog lub roj teeb ntws electrolyte xav tau?
A: Kev xyaum ua haujlwm ntawm 1.6 M tag nrho vanadium hauv sulfuric acid; ntau dua concentration nce zog ceev tab sis ua rau muaj kev pheej hmoo ntawm nag lossis daus ntawm qhov kub thiab txias.
Q:Kev ntsuam xyuas vanadium tau ntawv pov thawj li cas ntawm kev xa khoom?
A: Cov qauv sib xyaw yog kos los ntawm tsawg kawg 10% ntawm cov nruas, sib cais thiab kuaj los ntawm permanganate titration lossis XRF, thiab daim ntawv pov thawj qhia txog ib qho txiaj ntsig ntawm ntau yam nrog rau txoj kev sim tau teev tseg.
