TH39180A - Rolling process for metal strips. - Google Patents

Abstract

DC60 (27/04/42) This invention concerns the rolling process for a metal strip (6), specifically a steel strip (6), in a reversing roll (1) which has one roll at the beginning of the flow and one roll at the end of the flow (4,5), where the metal strip (6), having a metal strip thickness (d), is unrolled from the roll at the beginning of the flow (4) at a metal strip temperature (T) above a set constant temperature (T°). The run passes through the reversing roll (1) where it is reduced in size. The strip (6) is rolled out of the end-flow roll (5) and passed through the reverse roll (1) with a reduction of at least 10% per second pass and is rolled in through the upstream roll (4). This invention relates to the rolling process for a strip (6), specifically a steel strip (6) in a reverse roll (1) which has one upstream roll and one end-flow roll (4,5), where the strip (6) has a strip thickness (T) above a specified constant temperature (T°) and passes through the reverse roll (1) with a reduction of at least 10% per second pass. The strip (6) is initially rolled out of the end-flow roll (5) with a size reduction of at least 5% at the output velocity (V) and is wound back in by the end-flow roll (5), where the output velocity (v) is selected in such a way that the strip (6) has a constant temperature (T*) when the winding force is applied, and where the strip (6) is rolled out of the end-flow roll (5), moves through the reverse roll (1) with a size reduction of at least 10% per second pass and is wound back in by the upstream roll (4).

Claims (7)

1. The rolling process for a metal strip (6), specifically a steel strip (6), in a reverse roller (1) which has one upstream roll and one downstream roll (4,5), where a metal strip (6) of strip thickness (d) is unrolled from the upstream roll (4) at a strip temperature (T) above a fixed constant temperature (T°C), runs through the reverse roller (1) with an initial size reduction per pass of no more than 5% at the output speed (V), and is wound back into the roll by the downstream roll (5), where the output speed (v) is selected such that the metal strip (6) is at a fixed constant temperature (T*) when wound back into the roll, and where the metal strip (6) unrolled from the downstream roll (5) runs through the reverse roller (1) with a size reduction per second pass of at least 10%, and is wound back into the roll by the upstream roll (4). 2. A rolling process consistent with claim 1, characterized by an initial size reduction per pass of no more than 1%. 3. A rolling process consistent with claim 2, characterized by an initial size reduction per pass of zero. 4. A rolling process that conforms to claim 1, claim 2, or claim 3, which is of a specific nature, whereby the second reduction per pass is at least 20%. 5. The rolling process is consistent with one of the claims, claims 1 through 4, which are characterized by the metal strip (6) being heated in a roll (4,5). 6. A rolling process that conforms to claim one of claims 1 through 5, characterized by the steel strip having a strip temperature (T) above the GOS line for steel. 7. A rolling process consistent with claim one, claims 1 through 6, characterized by the thickness of the metal strip (d) being between 5 and 15 mm. (Clause 7, drawing - picture)