Aluminum hot strip rolling train and method for hot rolling an aluminum hot strip

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 AlMnSi-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 finishing rolling train (2) of the aluminum hot strip rolling train with activated cooling devices (5) between the tandem stands (1) of the finishing rolling train (2) so that during last two rolling passes 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 m and 6 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., preferably to a reeling temperature from 150° C. to 230° 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,

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 finishing rolling train (2) of the aluminum hot strip rolling train with activated cooling devices (5) between the tandem stands (1) of the finishing rolling train (2) so that during last two rolling passes 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 m 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., preferably to a reeling temperature from 150° C. to 230° 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 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 finishing rolling train (2) of the aluminum hot strip rolling train with activated cooling devices (5) between the tandem stands (1) of the finishing rolling train (2) so that during last two rolling passes 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 m and 8 mm is achieved;
• trimming of the hot strip;
• and
• winding of the aluminum hot strip with or without use of a cooling section, wherein the process of finish rolling of the strip element is carried out within a time period of less than 60 sec,