Metal deforming – With use of control means energized in response to activator... – Including plural sensors or sensor responsive to comparison...
Patent
1980-01-31
1981-10-13
Mehr, Milton S.
Metal deforming
With use of control means energized in response to activator...
Including plural sensors or sensor responsive to comparison...
72234, 72199, B21B 104, B21B 2702, B21B 3700
Patent
active
042940940
ABSTRACT:
A method for automatically controlling the width of a slab during hot rough-rolling thereof, which comprises: arranging a pair of horizontal broadening rolls each having at least one annular projection in a hot roughing mill train comprising a plurality of roll stands; calculating an amount of roll gap correction of said pair of broadening rolls on the basis of the variation in the width of said slab during hot rough-rolling on said hot roughing mill at the entry of said pair of broadening rolls; and, controlling the roll gap of said pair of broadening rolls in response to said amount of roll gap correction; thereby automatically controlling the width of said slab during hot rough-rolling thereof to a prescribed value at a high accuracy in accordance with the finishing width of a steel strip, and at the same time, automatically correcting variations in the width of said slab during hot rough-rolling thereof at a high accuracy.
REFERENCES:
patent: 3543548 (1970-12-01), Smith, Jr.
Ariizumi Takashi
Okado Masaru
Mehr Milton S.
Nippon Kokan Kabushiki Kaisha
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