US 2022/0184676 A1 · COLD ROLLING MILL WITH ALTERNATIVE FEED OF A STEEL STRIP OVER TWO DIFFERENT PATHS

Abstract

A first steel strip and a second steel strip (7) are rolled in succession in at least one roll stand (1) of a cold rolling mill. A rolling pause, in which no steel strip is rolled, is provided between the rolling of the first and the second steel strip (7). The first steel strip s fed over a first path starting from a first pay-off reel (2), and the second steel strip (7) is fed over a second path starting from the first pay-off reel (2), or from a second pay-off reel different from the first pay-off reel (2). The first steel strip is not heated as it is fed to the rolling mill (1), whereas, by contrast, the second steel strip (7) is heated. The second path is longer than the first path.

Claims10

Dependent claims

A method for operating a cold rolling mill, comprising:

wherein a first steel strip and a second steel strip are rolled in at least one roll stand of the cold rolling mill,
wherein there is a pause in rolling, in which no steel strip is rolled, between the rolling of the first steel strip and the rolling of the second steel strip;
wherein starting from a first uncoiling reel, the first steel strip is fed to the roll stand via a first path and is not heated while it is being fed to the roll stand;
wherein starting from the first uncoiling reel or a second uncoiling reel which is different than the first uncoiling reel, the second steel strip is fed to the roll stand via a second path and is heated while it is being fed to the roll stand;
and
wherein the second path is longer than the first path.

3 more elements

A cold rolling mill, comprising:

the cold rolling mill has a roll stand for rolling a first steel strip immediately after the first steel strip has been uncoiled from a first uncoiling reel;
and a second steel strip is rolled immediately after the second steel strip has been uncoiled from the first uncoiling reel or from a second uncoiling reel which is different than the first uncoiling reel;
starting from the first uncoiling reel, the cold rolling mill has a first path, via which, the first steel strip reel can be fed to the roll stand;
no heating device for heating the first steel strip is arranged in the first path, so that the first steel strip is fed to the roll stand at that temperature of the first steel strip at which the first steel strip is uncoiled from the first uncoiling reel;
the cold rolling mill has a second path, starting from the first or second uncoiling reel, the second steel strip can be fed to the roll stand;
a heating device for heating the second steel strip is arranged in the second path, so that the second steel strip is fed to the roll stand at a temperature which is higher than that temperature of the second steel strip and at which the second steel strip is uncoiled from the first or second uncoiling reel;
and
the second path is longer than the first path.

5 more elements

Dependencies are inferred from the claim text.

Cold rolling mill with alternative feed of a steel strip over two different paths

Life of this patent

Cold rolling mill with alternative feed of a steel strip over two different paths

Life of this patent

Abstract

Claims10