Aluminum hot strip rolling train and method for hot rolling an aluminum hot strip
AssigneeSMS group GmbH
InventorMichael Breuer
Life of this patent
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Abstract
An aluminum hot strip rolling mill including a multi-stand tandem finishing rolling train (2), at least one winding reel (8) arranged downstream, in the rolling direction, of the multi-stand tandem finishing rolling train, a cooling section (4) provided in the outlet region of the aluminum hot strip rolling mill, and at least one trimmer (6) paired with the multi-stand tandem finishing rolling train and arranged downstream, in the rolling direction, in the rolling direction, of the multi-stand tandem rolling mill train.
Claims5
A method of hot rolling an aluminum hot strip (7) of AlMg-alloy from AA5xxx-group in an aluminum hot strip rolling train, comprising the steps of:
- heating an aluminum alloy ingot of AlMg-alloy from AA5xxx-group in a temperature 450° C. to 570° C.;
- rough rolling the aluminum alloy ingot to an aluminum hot strip having a thickness from 20 mm to 50 mm in a roughing train of the aluminum hot strip rolling train in a temperature range above 400° C.;
- rolling the aluminum hot strip (7) in a multi-stand tandem finishing rolling train (2) of the aluminum hot strip rolling train with activated cooling devices (5) between the tandem stands (1) of the multi-stand tandem finishing rolling train (2) so that during rolling in last two tandem stand in a temperature range between 250° C. and 300° C., a deformation rate between 30% and 50% and a desired hot strip thickness between 2 mm and 8 mm is achieved;
- trimming of the hot strip;
- and
- winding of the aluminum hot strip, wherein the process of finish rolling of the strip element is carried out within a time period of less than 60 sec.
A method of hot rolling an aluminum hot strip (7) of AlMg-alloy from AA5xxx-group in an aluminum hot strip rolling train, comprising the steps of:
- heating an aluminum alloy ingot of AlMg-alloy from AA5xxx-group in a temperature 450° C. to 570° C.;
- rough rolling the aluminum alloy ingot to an aluminum hot strip having a thickness from 20 mm to 50 mm in a roughing train of the aluminum hot strip rolling train in a temperature range above 400° C.;
- rolling the aluminum hot strip (7) in a multi-stand tandem finishing rolling train (2) of the aluminum hot strip rolling train with activated cooling devices (5) between the tandem stands (1) of the multi-stand tandem finishing rolling train (2) so that during rolling in last two tandem stands in a temperature range between 250° C. and 300° C., a deformation rate between 30% and 50% and a desired hot strip thickness between 2 mm and 8 mm is achieved;
- trimming of the hot strip;
- and
- cooling of the aluminum hot strip in an outlet region of the aluminum hot strip rolling train with a cooling section (4) to a reeling temperature of below 250° C., and winding up the aluminum hot strip, wherein the process of finish rolling in the multi-stand tandem finishing rolling train (2) is carried out within a time period of less than 60 sec.
A method of hot rolling an aluminum hot strip (7) of AlMgSi-alloy from AA6xxx-group in an aluminum hot strip rolling train, comprising the steps of:
- heating an aluminum alloy ingot of AlMgSi-alloy from AA6xxx-group to a temperature from 490° C. to 570° C.;
- rough rolling the aluminum alloy ingot to an aluminum hot strip having a thickness from 20 mm to 50 mm in a roughing train of the aluminum hot strip rolling train in a temperature range above 400° C.;
- rolling the aluminum hot strip (7) in a multi-stand tandem finishing rolling train (2) of the aluminum hot strip rolling train with activated cooling devices (5) between tandem stands (1) of the multi-stand tandem finishing rolling train (2) so that during rolling in last two tandem stands in a temperature range between 300° C. and 370° C., a deformation rate between 30% and 50% and a desired hot strip thickness between 2 mm and 6 mm is achieved;
- trimming of the hot strip;
- and
- cooling of the aluminum hot strip in an outlet region of the multi-stand tandem finishing rolling train with a cooling section (4) to a reeling temperature of below 250° C., wherein the process of finish rolling in the multi-stand tandem finishing rolling train (2) is carried out within a time period of less than 60 sec.
Dependencies are inferred from the claim text.