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AssigneeLuvata Espoo Oy
InventorSarita Hernesniemi
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A pivotable tundish (1) for continuous casting a metal alloy. The tundish comprises a body (3) comprising a first chamber (5), a second chamber (7), a first passage (12) between the first chamber and the second chamber, and a second passage (16) between the second chamber and a mold (9). The first chamber is adapted to receive and hold a base metal constituting the base for forming the metal alloy by addition of alloying elements. The metal alloy is fed from the second chamber to the mold through the second passage. The second chamber further comprises a first portion (30) and a second portion (32), and a third passage (36) between the first portion and the second portion. In the casting state the metal alloy is formed while casting by adding the alloying elements to the second portion of the second chamber.
A pivotable tundish (1) for continuous casting a metal alloy, the tundish (1) comprises a body (3) adapted to be pivoted between a casting state and a non-casting state, the body (3) comprises a first chamber (5) and a second chamber (7) separated from each other, a first passage (12) between the first chamber (5) and the second chamber (7), and a second passage (16) between the second chamber (7) and a mold (9) for continuous casting the metal alloy, wherein in the non-casting state the first chamber (5) is adapted to receive and hold a base metal in molten condition, which base metal constitutes the base of the metal alloy that is formed by adding one or more alloying elements to the base metal, wherein in the casting state said metal alloy is fed from the second chamber (7) to the mold (9) through the second passage (16),
The pivotable tundish (1) according to any of the previous claims, wherein the body (3) of the tundish (1) comprises a first wall section (10) provided with the first passage (12), a second wall section (14) provided with the second passage (16) and a third wall section (34) provided with the third passage (36), wherein the wall sections are arranged so that the first wall section (10) separates the first chamber (5) from the first portion (30) of the second chamber (7), the second wall section (14) separates the second portion (32) of the second chamber (7) from the mold (9), and the third wall section (34) separates the first portion (30) from the second portion (32) of the second chamber (7).
The pivotable tundish (1) according to any of the previous claims, wherein the second passage (16) is extending so to enable continuous horizontal casting of the metal alloy.
The pivotable tundish (1) according to any of the previous claims, wherein the tundish (1) comprises heating means for heating the base metal and/or the metal alloy.
The pivotable tundish (1) according to any of the previous claims, wherein at least one of the first passage (12), the second passage (16) and the third passage (36) comprises a plurality of through holes in the corresponding wall section.
The pivotable tundish (1) according to any of the previous claims, wherein the volume of the second chamber (7) is smaller than the first chamber (5).
A method for continuous casting a metal alloy by means of a tundish (1) comprising a body (3) adapted to be pivoted between a casting state and a non-casting state, the body (3) comprises a first chamber (5) and a second chamber (7) separated from each other, a first passage (12) between the first chamber (5) and the second chamber (7), and a second passage (16) between the second chamber (7) and a mold (9) for continuous casting the metal alloy, wherein the method comprises:
Dependencies are inferred from the claim text.