Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1989-08-03
1991-01-22
Seidel, Richard K.
Metal founding
Process
Shaping liquid metal against a forming surface
291162, 29132, 164428, 164480, 164502, B22D 1106, B22D 1110
Patent
active
049863398
ABSTRACT:
Molten metal is continuously poured into the space defined by a pair of rolls (10A, 10B; 30A, 30B) positioned parallel to each other and rolling the poured molten metal while causing it solidify gradually, in which a pair of rolls are used which is constructed in a manner that a plurality of paramagnetic material zones (14, 16; 34, 36) and a plurality of ferromagnetic material zones (18, 20, 22; 38, 40) are alternately and integrally combined in the direction of axis, all of the ferromagnetic material zones of the two rolls are opposite to one another, by the action of magnets (24, 26; 50X, 50Y) positioned outside or inside the rolls. Magnetic circuits are formed in two places arbitrarily selected in the direction of axis between the ferromagnetic material zones and the magnets which are opposite to one another between the two rolls, molten metal is continuously supplied to the gap of the rotating rolls while this condition is maintained, and the flow of molten metal to outside the magnetic fields in the direction of roll axis is prevented by the magnetic fields generated between the opposite rolls in the above-mentioned two places, whereby the casting width is controlled. It is desirable that at least two ferromagnetic material zones be provided on the shaft end sides of the two rolls with the middle portion (14; 34) of the roll length serving as the center of symmetry.
REFERENCES:
Casting of Near Net Shape Products, Fall Extractive and Process Meeting, Honolulu, Hawaii, The Metallurgical Society, Nov. 13-17, 1988, pp. 583-593.
Material and Process, vol. 1, No. 2, 1988, p. 389.
Batten, Jr. J. Reed
Nippon Steel Corporation
Seidel Richard K.
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