VAD ita ce taƙaitawar vacuum arc degassing, hanyar VAD tana haɗin gwiwa ta hanyar kamfanin Finkl da kamfanin Mohr, don haka ana kiranta hanyar Finkl-Mohr ko hanyar Finkl-VAD. Ana amfani da tanderu na VAD musamman don sarrafa ƙarfe na carbon, ƙarfe na kayan aiki, ƙarfe mai ɗaukar nauyi, babban ductility karfe da sauransu.
Kayan aikin tace VAD galibi sun ƙunshi ladle na ƙarfe, tsarin iska, kayan dumama baka na lantarki da ƙara kayan aikin ferroalloy.
Hanyoyin hanyar VAD
- Kyakkyawan tasiri mai kyau a lokacin dumama, saboda ana yin dumama wutar lantarki a yanayin injin.
- Za a iya daidaita yanayin zafin simintin ruwa na ƙarfe daidai, rufin ladle na ƙarfe na ciki zai iya sabunta zafi sosai, raguwar zafin jiki yana da ƙarfi yayin simintin.
- Karfe ruwa za a iya cikakken zuga a lokacin refining, karfe ruwa abun da ke ciki ne barga.
- Ana iya ƙara yawan adadin gami a cikin ruwa na ƙarfe, kewayon nau'in narkewa yana da faɗi.
- Slagging jamiái da sauran slagging kayan za a iya ƙara for desulfurization, decarburization. Idan bindigar iskar oxygen tana sanye da murfin injin, za'a iya amfani da hanyar lalata iskar oxygen don narke ultra low carbon bakin karfe.
Ayyukan VAD tanderu karfe ladle daidai yake da wutar lantarki ta wutar lantarki. Tanderun VAD yana aiki a yanayin injin, rufin ladle na ƙarfe yana fama da ruwa na ƙarfe da narkakken sinadari na lalata da kuma wanke injin, yayin da, hasken wutar lantarki na arc yana da ƙarfi, zafin jiki yana da girma, yankin tabo mai zafi zai sami mummunar lalacewa. Tare da ƙari na wakili na slagging, lalatawar slag yana da tsanani, musamman yankin layin slag da ɓangaren sama, ƙimar lalata ya fi sauri.
Zaɓin kayan aikin gyaran gyare-gyare na VAD ladle ya kamata ya ɗauki nau'ikan tubali daban-daban bisa ga ainihin yanayin sana'a, don haka rayuwar sabis ta tsawaita kuma ana rage yawan amfani da kayan.
Abubuwan da aka yi amfani da su a cikin hanyar VAD sun hada da: tubalin magnesia chrome, tubalin magnesia carbon, tubalin dolomite da sauransu.
Aiki rufi yafi rungumi dabi'ar kai tsaye bonded magnesia Chrome tubalin, rebonded magnesite Chrome tubalin da Semi rebonded magnesia chromite tubalin, magnesite carbon tubalin, kora ko unfired high alumina tubalin da low zafin jiki bi da tubalin dolomite, da dai sauransu. Dindindin rufi yawanci rungumi dabi'ar gabaɗaya aikace-aikace magnesia chrome tubalin, tubalin wuta da tubalin alumina masu nauyi masu nauyi.
A cikin wasu murhun wuta na VAD, ladle ɗin aiki na ƙasa yawanci yana ɗaukar tubalin zircon da haɗe-haɗe na raming na zircon. Ƙarƙashin ɓangaren layin slag an yi shi da manyan tubalin alumina. An gina ɓangaren layin Slag ta bulogin magnesia chrome masu haɗa kai tsaye. Sama da layin zafi mai zafi an gina shi ta bulogin magnesia carbon wanda aka haɗa kai tsaye, yayin da sauran ɓangaren bulo ne da ke aiki da bulogin magnesite chromite kai tsaye.
VAD ladles slag sashin layin shima yana ɗaukar bulogin magnesia chrome da aka haɗa kai tsaye da bulogin magnesia chrome. Ladle na ƙasa mai aiki yana yin layi da tubalin zircon. Filogi mai ƙarfi yana da babban tushen alumina mullite, kuma sauran sassan duk an gina su ta bulogin alumina masu tsayi mara wuta.
Lokacin aikawa: Fabrairu-15-2022