Method of startup procedure of strip in the twin roll strip...

Details Method of startup procedure of strip in the twin roll strip... Method of startup procedure of strip in the twin roll strip...

2006-09-05

2006-09-05

Lin, Kuang Y. (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S483000

Reexamination Certificate

active

07100674

ABSTRACT:
Disclosed herein is a method for drawing a strip initially cast by means of a twin roll strip casting apparatus. The method comprises a roll gap maintenance step where roll gap is maintained, a casting initiation step where a stopper is disengaged from a tundish hole so that molten metal is poured into a space between the rolls, and the rolls are rotated at speed v0of each of the rolls if the position of the stopper is higher than the actually poured position of the molten metal, a casting speed acceleration step where a roll repulsive force is detected when the molten metal is solidified to the leader strip and passes between the rolls, and the casting speed is accelerated if the roll repulsive force reaches a load threshold, and a normal control step where the casting speed is detected, and if the casting speed reaches a target value.

REFERENCES:
patent: 59215257 (1984-12-01), None
patent: 06114504 (1994-04-01), None
patent: 6-315742 (1994-11-01), None
patent: 2002-017028 (2002-03-01), None
English-language Abstract of Japanese Publication No. 06-114504 Patent Abstracts of Japan, published Apr. 26, 1994.
English-language Abstract of Japanese Publication No. 59-215257, Patent Abstracts of Japan, published Dec. 5, 1984.

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