Ferrovanadium thiab Steel Hardness: Vanadium Carbide Strengthening thiab Tuam Tshoj Nqe Siv
Tso lus
Dab tsi Ua Steel Hard
Hardness nyob rau hauv steel tsis yog ib qho cuab yeej tab sis pom qhov tshwm sim ntawm yuav ua li cas lub microstructure resists yas deformation. Muaj ob txoj hauv kev muaj rau cov neeg tsim khoom steel. Thawj yog thermal: quench cov hlau sai txaus thiab cov pa roj carbon yog daig hauv cov qauv nyuaj martensitic. Qhov thib ob yog tshuaj: ntxiv cov khoom uas tsim tau zoo, cov khoom tawv tawv hauv cov matrix kom cov ferrite lossis tempered martensite nws tus kheej ua rau cov deformation ntau dua. Ferrovanadium ua haujlwm los ntawm txoj kev thib ob, thiab nws ua li ntawd yam tsis muaj kev cuam tshuam thiab kev ntxhov siab uas nyob rau hauv uas muaj kev kub ntxhov hnyav.
Ferrovanadium yog hlau-vanadium master alloy graded ntawm vanadium cov ntsiab lus, feem ntau FeV50 thiab FeV80. Nws yog ntxiv rau lub ladle los yog tapping kwj, qhov twg nws dissolves thiab tso tawm vanadium rau hauv cov khoom tov. Dab tsi tshwm sim tom ntej yog dab tsi nce lub hardness.
Yuav ua li cas Vanadium Carbides tsa Hardness
Thaum vanadium nyob rau hauv kev daws, nws ua ke nrog carbon thiab nitrogen thaum lub sij hawm txias thiab tom qab kev kho cua sov kom tsim vanadium carbide thiab vanadium carbonitride hais. Cov particles no tsis tshua muaj zog thiab thermally ruaj khov, thiab lawv precipitate ntawm ib qho zoo heev. Lawv cov nyhuv ntawm hardness muaj peb feem.
Dispersion ntxiv dag zog.Fine particles thaiv kev txav ntawm dislocations. Ib qho dislocation uas ua tau raws li ib qho nyuaj yuav tsum tau txiav los ntawm nws los yog hneev nyob ib ncig ntawm nws, thiab ob qho tib si yuav tsum muaj kev ntxhov siab ntxiv. Lub macro- nplai tshwm sim yog qhov nyuaj dua thiab lub zog tensile ntau dua.
grain refinement.Tib precipitates pin austenite grain ciam teb thaum lub sij hawm kub ua hauj lwm, yog li qhov kawg grain loj me me. Hardness nyob rau hauv ib tug nplua -grained qauv yog siab dua thiab ntau yam zoo li nyob rau hauv ib tug ntxhib.
Secondary hardening.Nyob rau hauv tempering, vanadium- nplua nuj particles re-precipitate ntawm qhov kub thiab txias uas lwm cov carbides yuav coarsening. Hlau yog li khaws nws cov tawv tawv tom qab tempering es tsis txhob softening, uas yog vim li cas vanadium tshwm nyob rau hauv lub cuab tam, tuag thiab kub - ua hauj lwm steels.
Vanadium kuj tseem txhim khu kev tiv thaiv rau deformation ntawm qhov kub siab. Qhov kev sib xyaw ua ke ntawm kub hardness thiab cov qauv kev ruaj ntseg yog vim li cas vanadium ntxiv tshwm nyob rau hauv cov hlau uas yuav tsum tuav nws cov duab nyob rau hauv load thiab kub tib lub sij hawm.
Xaiv Qib: FeV50 thiab FeV80
Kev xaiv qib ua raws qhov loj ntawm qhov sib ntxiv thiab theem uas nws tau ua. FeV80 nqa kwv yees li 80% vanadium, yog li cov neeg nqa khoom tsawg dua cov hlau nkag mus rau hauv chav da dej rau tib qhov sib ntxiv ntawm vanadium, uas tseem ceeb nyob rau hauv lub lig ladle trim ntxiv thiab nyob rau hauv heats nrog ib tug nruj nruj pob nyiaj siv. FeV50 yog dav siv rau kev ntxiv microalloying loj, qhov twg qhov loj ntxiv tsis yog qhov txwv thiab kev lag luam ntawm qib qis dua yog qhov zoo dua. Cov neeg tsim khoom hauv Suav teb ib txwm xaiv cov qib no rau GB / T 4139, thiab txhua qhov ntau tau muab nrog kev tshuaj xyuas tshuaj uas cov nroj tsuag tau txais siv los suav cov nqi ntawm vanadium tiag.
Ob lub ntsiab lus tseem ceeb cuam tshuam rov qab. Vanadium muaj affinity siab rau oxygen, yog li qhov sib ntxiv yuav tsum ua raws li deoxidation thiab yuav tsum tau ua qhov twg slag tej yam kev mob tsis strip nws los ntawm da dej. Vim hais tias cov hlau yog ntom, nws nkag mus rau ib txwm steelmaking slag tsis muaj teeb meem thiab dissolves ntseeg tau, uas yog vim li cas vanadium rov qab nyob rau hauv ladle xyaum yog ib txwm siab thiab zoo ib yam.
Tuam Tshoj FeV50 Nqe Siv, Lub Rau Hli 2023
Cov lus hauv qab no sau cov theem tseem ceeb hauv kev lag luam rau FeV50 txog rau Lub Rau Hli 2023. Qhov chaw lag luam quotes hauv units ntawm kaum txhiab CNY ib tonne; Cov nqi tau raug hloov mus rau CNY ib tonne rau kev nyeem tau thiab pom tau tias xa tawm, se- suav nrog cov kev sib pauv hloov pauv.
| Hnub tim (Lub Rau Hli 2023) | Qib | Kev lag luam tseem ceeb (CNY / t) |
|---|---|---|
| Lub Rau Hli 19 | FeV 50 | 113,000 - 116,000 |
| Lub Rau Hli 16 | FeV 50 | 113,000 - 116,000 |
| Lub Rau Hli 15 | FeV 50 | 113,000 - 116,000 |
| Lub Rau Hli 14 | FeV 50 | 113,000 - 116,000 |
| Lub Rau Hli 13 | FeV 50 | 112,000 - 116,000 |
| Lub Rau Hli 12 | FeV 50 | 112,000 - 116,000 |
| Lub Rau Hli 9 | FeV 50 | 110,000 - 114,000 |
| Lub Rau Hli 8 | FeV 50 | 110,000 - 114,000 |
| Lub Rau Hli 7 | FeV 50 | 110,000 - 114,000 |
| Lub Rau Hli 6 | FeV 50 | 110,000 - 114,000 |
| Lub Rau Hli 5 | FeV 50 | 110,000 - 114,000 |
| Lub Rau Hli 2 | FeV 50 | 111,000 - 115,000 |
| Lub Rau Hli 1 | FeV 50 | 114,000 - 116,000 |
Peb qhov kev soj ntsuam tuaj yeem rub tawm los ntawm cov yeeb yaj kiab yam tsis muaj tshaj - nyeem nws. Kev ua lag luam tau qhib rau lub Rau Hli ntawm nws qib siab tshaj plaws ntawm lub hli, tau yooj yim los ntawm nruab nrab ntawm thawj lub lim tiam thiab tom qab ntawd tuav lub toj siab qis rau ob peb zaug ua ntej rov qab los nyob rau hauv ib nrab ntawm lub hli. Qhov dav ntawm cov lus tshaj tawm kuj tau nthuav dav raws li lub hli nce, uas feem ntau qhia tau tias cov neeg yuav khoom thiab cov neeg muag khoom tau sib sau ua ke ntawm qib ua haujlwm ntau dua li kev sib cav sib ceg. Rau ib tug steelmaker npaj ib tug ntxiv vanadium, cov tswv yim nyeem ntawv yog qhov tseeb theem tseem ceeb tsawg tshaj li lub sij hawm txheeb ze rau lub sij hawm ntau lawm, vim hais tias ib tug ob mus rau peb txhiab CNY ib tonne viav vias nyob rau hauv ib lub hlis yog sib npaug rau cov khoom nqi hloov ntawm txhua lub tshav kub uas siv cov alloy.
Cov neeg yuav khoom yuav tsum kho cov keeb kwm keeb kwm raws li kev siv xwb. Vanadium nqi teb rau vanadium pentoxide feedstock tus nqi, export tej yam kev mob thiab steel tso zis, thiab lub hauv paus sib piv yog ib txwm nqi ib kilogram ntawm vanadium nyob rau hauv ib lub sij hawm tus me nyuam.
Qhov twg Ferrovanadium-Hardened Steel siv
Vanadium-hardened steel tshwm nyob rau hauv cov cuab yeej thiab tuag daim ntaub ntawv, nyob rau hauv forging thiab siab - lub zog fasteners, nyob rau hauv caij nplooj ntoos hlav steel, nyob rau hauv hnav- phaj resistant thiab hnyav- lub luag hauj lwm cov qauv seem. Hauv kev tsim kho nws txhawb nqa siab - lub zog ntxiv, thiab hauv cov khoom siv siab thiab lub zog nws ua rau nkag mus rau - qib resistant qhov twg cov carbides ruaj khov yog qhov tseem ceeb ntawm kev pabcuam kub. Nyob rau hauv txhua rooj plaub qhov sib ntxiv yog qhov me me kom ncav cuag lub hardness lossis lub zog chav kawm, tom qab ntawd txheeb xyuas los ntawm kev sim hardness thiab tensile kuaj ntawm cov khoom tiav es tsis yog qhov hnyav ntawm tus nqi.
Cov lus nug nquag
Q: Ua li cas ferrovanadium nce steel hardness?
Nws qhia txog vanadium, uas tsim cov vanadium carbide zoo thiab carbonitride hais uas thaiv kev txav txav, ua kom cov nplej loj thiab tiv thaiv softening thaum tempering.
Q: Puas yog ferrovanadium ua rau cov hlau hnyav dua li kev tua hluav taws thiab kev kub ntxhov?
Ob txoj kev sib txuas ntxiv tsis yog kev sib tw. Vanadium tsa lub qab nthab hardness ntawm lub hauv paus tsom xam thiab ua kom hardness ruaj khov ntawm qhov kub thiab txias, thaum quenching thiab tempering teeb tsa tag nrho lub zog.
Q: Qib twg yuav tsum tau siv, FeV50 lossis FeV80?
FeV80 suits lig, meej ladle ntxiv vim nws nqa cov hlau tsis tshua muaj zog. FeV50 yog kev lag luam rau qhov loj dua microalloying ntxiv qhov twg tus nqi hnyav tsis yog qhov txwv.
Q: Ntau npaum li cas ferrovanadium xav tau kom ncav cuag lub hom phiaj hardness?
Qhov sib ntxiv yog xam los ntawm qhov yuav tsum tau vanadium hauv kev tshuaj xyuas thiab kev rov qab tsim los ntawm cov nroj tsuag, tom qab ntawd lees paub los ntawm hardness thiab tensile kuaj ntawm cov khoom. Kev sim ua kom sov yog txoj hauv kev txhim khu kev qha los kho qhov xwm txheej.
Q: Puas yog vanadium ua haujlwm ntawm qhov kub thiab txias?
Yog lawm. Vanadium carbides yog thermally ruaj khov, yog li hardness yog khaws cia ntawm qhov kub thiab txias qhov twg lwm cov carbide systems twb yuav coarsening thiab softening.
Q: Vim li cas Lub Rau Hli 2023 tus nqi sib txawv tseem ceeb rau tus neeg yuav khoom tam sim no?
Nws qhia tau hais tias ntau npaum li cas FeV50 hais tuaj yeem txav mus rau hauv ib hlis. Tias yog vim li cas cov ntawv cog lus feem ntau hais txog cov ntawv luam tawm nrog cov lus qhia tshwj xeeb thiab lub sijhawm xa khoom es tsis yog daim duab tas.
