VAD ipfupiso yekubvisa gassing kubva muvacuum arc, nzira yeVAD yakagadzirwa pamwe chete nekambani yeFinkl nekambani yeMohr, saka inonziwo nzira yeFinkl-Mohr kana nzira yeFinkl-VAD. VAD furnace inonyanya kushandiswa kugadzirisa simbi yekabhoni, simbi yezvishandiso, simbi yekuberekera, simbi ine ductility yakakwira nezvimwewo.
Midziyo yekunatsa yeVAD inonyanya kuumbwa nesimbi, vacuum system, michina yemagetsi yekudziya arc uye michina yekuwedzera ferroalloy.
Hunhu hwenzira yeVAD
- Kubvisa gasi zvakanaka panguva yekupisa, nekuti kupisa kwemagetsi kunoitwa kana gasi ravacuum.
- Inogona kugadzirisa tembiricha yesimbi inogadzirwa nesimbi nemazvo, jira remukati resimbi rinogona kuvandudza kupisa zvakakwana, kudzikira kwetembiricha kunogadzikana panguva yekuumbwa.
- Mvura yesimbi inogona kusanganiswa zvizere panguva yekunatswa, kuumbwa kwemvura yesimbi kwakasimba.
- Chiumbwa chakawanda chinogona kuwedzerwa mumvura yesimbi, mhando dzezvinhu zvinonyungudutsa dzakakura.
- Zvinoshandiswa pakubvisa simbi mumhepo nezvimwe zvinhu zvinobvisa simbi mumhepo zvinogona kuwedzerwa kuti zvibvise simbi mumhepo. Kana pfuti yeokisijeni yakaiswa pavharumu, nzira yekubvisa simbi mumhepo inogona kushandiswa pakunyungudutsa simbi isina ngura ine kabhoni shoma.
Basa reVAD furnace steel ladle rakaenzana ne electric arc smelting furnace. VAD furnace inoshanda kana yaoma, steel ladle working lining inosangana ne steel liquid uye slag yakanyungudutswa chemical corrosion uye mechanical washing, ukuwo, electric arc thermal radiation yakasimba, tembiricha yakakwira, hot spot zone inokuvara zvakanyanya. Nekuwedzera slagging agent, slag corrosion inokura zvakanyanya, kunyanya slag line zone nechikamu chepamusoro, corrosion rate inokura nekukurumidza.
Kusarudzwa kwezvinhu zvinodzivirira madziro zveVAD kunofanirwa kushandisa marudzi akasiyana ezvidhinha zvinodzivirira madziro zvichienderana nemamiriro chaiwo ebasa, kuitira kuti nguva yekushanda irebe uye kushandiswa kwezvinhu zvinodzivirira madziro kuderedzwa.
Zvinhu zvinoshandiswa muVAD zvinosanganisira: magnesia chrome bricks, magnesia carbon bricks, dolomite bricks nezvimwewo.
Kushanda kwemukati kunonyanya kushandisa zvidhinha zvemagnesia chrome zvakasungwa zvakananga, zvidhinha zvemagnesite chrome zvakagadziriswazve uye zvidhinha zvemagnesia chromite zvakagadziriswazve, zvidhinha zvemagnesite carbon, zvidhinha zvealumina zvakapetwa kana zvisina kupiswa uye zvidhinha zvedolomite zvakagadziriswa pakupisa kwakaderera, nezvimwewo. Kugara kwemukati kunowanzo shandiswa zvidhinha zvemagnesia chrome, zvidhinha zvefireclay uye zvidhinha zvealumina zvakapetwa zvishoma.
Mune mamwe maovheni eVAD, ladle pasi pekushanda kweladle inowanzoshandisa zvidhinha zvezircon uye misanganiswa yezircon refractory ramming. Pasi pe slag line chikamu chakafukidzwa nezvidhinha zvealumina refu. Slag line chikamu chakavakwa nezvidhinha zvemagnesia chrome zvakabatana zvakananga. Pamusoro pe slag line hot spot inovakwa nezvidhinha zvemagnesia carbon zvakabatana zvakananga, nepo chikamu chasara chiri zvidhinha zvakashongedzwa nezvidhinha zvemagnesite chromite zvakabatana zvakananga.
Chikamu cheVAD ladles slag line chinoshandisawo zvidhinha zvemagnesia chrome zvakasungirirwa zvakananga uye zvidhinha zvemagnesia chrome zvakasanganiswa. Chidimbu chepasi chekushanda cheladle chakafukidzwa nezvidhinha zvezircon. Puragi ine maburi ine alumina mullite yakawanda, uye zvimwe zvikamu zvese zvakavakwa nezvidhinha zvealumina zvisina kupiswa.
Nguva yekutumira: Kukadzi-15-2022