VAD kapuahi hoopau

ʻO VAD ka pōkole o ka vacuum arc degassing, ua hoʻomohala ʻia ke ʻano VAD e ka hui Finkl a me ka hui Mohr, no laila ua kapa ʻia ʻo ia ʻo Finkl-Mohr method a i ʻole Finkl-VAD method. Hoʻohana nui ʻia ka umu VAD e hana i ke kila kalapona, ke kila kila, ke kila kila, ke kila ductility kiʻekiʻe a pēlā aku.

Hoʻokumu ʻia nā mea hoʻomaʻemaʻe VAD me ka ladle kila, ka ʻōnaehana vacuum, nā mea hoʻomehana uila arc a me nā mea hoʻohui ferroalloy.

Nā hiʻohiʻona ʻano VAD

1. ʻO ka hopena degassing maikaʻi i ka wā o ka hoʻomehana ʻana, no ka mea, hana ʻia ka hoʻomehana ʻana o ka uila ma ke kūlana vacuum.
2. Hiki ke hoʻoponopono pololei i ka mahana hoʻoheheʻe wai kila, hiki ke hoʻoulu hou i ka wela o ka ladle kila i ka wā e hoʻolei ana.
3. Hiki ke hoʻoulu piha ʻia ka wai kila i ka wā hoʻomaʻemaʻe, paʻa ka hui wai kila.
4. Hiki ke hoʻohui ʻia ka nui o ka alloy i loko o ka wai kila, ākea ka laulā o nā ʻano mea hoʻoheheʻe.
5. Hiki ke hoʻohui ʻia nā mea hoʻoheheʻe a me nā mea slagging ʻē aʻe no ka desulfurization, decarburization. Inā hoʻolako ʻia ka pū o ka oxygen ma ka uhi ʻāwīwī, hiki ke hoʻohana ʻia ke ʻano o ka oxygen decarburization no ka hoʻoheheʻe ʻana i ke kila stainless haʻahaʻa haʻahaʻa.

ʻO ka hana o ka VAD furnace steel ladle ua like ia me ka umu hoʻoheheʻe uila. Hana ʻia ka umu ahi VAD ma ke ʻano ʻawaʻawa, ʻo ka ladle kila e hana ana i ka wai kila a me ka hoʻoheheʻe ʻana i nā kemika a me ka holoi ʻana i ka mīkini, ʻo ia hoʻi, ikaika ka uila uila arc thermal radiation, kiʻekiʻe ka wela, ʻoi aku ka pōʻino o ka wahi wela. Me ka hoʻohui ʻana i ka mea hana slagging, ʻoi aku ka ʻino o ka pala, ʻoi aku ka nui o ka laina laina a me ka ʻaoʻao o luna, ʻoi aku ka wikiwiki o ka corrosion.

ʻO ke koho ʻana i nā mea hoʻonaninani ʻo VAD ladle lining refractory e pono e hoʻohana i nā ʻano ʻano like ʻole o nā brick refractory e like me ke kūlana hana maoli, no laila e hoʻolōʻihi ʻia ke ola lawelawe a hoʻemi ʻia ka hoʻohana ʻana i nā mea refractory.

ʻO nā mea refractory i hoʻohana ʻia ma ke ʻano VAD ka mea nui: nā pōhaku chrome magnesia, nā pōhaku kalapona magnesia, nā pōhaku dolomite a pēlā aku.

Hoʻohana nui ka lining i nā pōhaku lepo magnesia chrome i hoʻopaʻa ʻia, rebonded magnesite chrome bricks a me semi rebonded magnesia chromite bricks, magnesite carbon bricks, puhi ʻia a unfired kiʻekiʻe alumina pōhaku lepo a me ka haʻahaʻa wela mālama ʻia nā pōhaku lepo dolomite, etc. nā pōhaku lepo ahi a me nā pōhaku lepo alumina māmā.

I kekahi mau kapuahi VAD, hoʻohana maʻamau ka ladle lalo o ka hana ʻana i nā pōhaku lepo zircon a me nā hui ʻana o ka zircon refractory ramming. Ma lalo o ka ʻāpana laina slag i hoʻopaʻa ʻia e nā pōhaku alumina kiʻekiʻe. Kūkulu ʻia ka ʻāpana laina slag e nā pōhaku lepo chrome magnesia i hoʻopaʻa ʻia. Ma luna o ka laina slag wahi wela i kūkulu ʻia e nā pōhaku kalapona magnesia i hoʻopaʻa ʻia, aʻo ke koena he pōhaku i hana ʻia e nā pōhaku lepo chromite magnesite i hoʻopaʻa ʻia.

Hoʻohana pū ʻia ka ʻāpana laina o ka VAD ladles slag i nā pōhaku lepo chrome magnesia i hoʻopaʻa ʻia a me nā pōhaku lepo chrome magnesia. Hoʻopili ʻia ka laina hana ma lalo o ka Ladle e nā pōhaku lepo zircon. He alumina mullite kiʻekiʻe ka plug Porous, a ua kūkulu ʻia nā ʻāpana koena e nā pōhaku alumina kiʻekiʻe i puhi ʻole ʻia.