Asymmetric rolling device, asymmetric rolling method and rolled material manufactured using same
AssigneeGangneung-Wonju National University Industry Academy Cooperation Group
InventorsHyo-Tae Jeong, Byung-Hak Choe
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Abstract
An asymmetric rolling method for rolling a rolling material by using at least one pair of working rolls comprises rolls rotating at the same linear velocity and having different diameters. An asymmetric rolling apparatus may comprise a first roll contacting a first surface of a rolling material, a second roll having a diameter different from that of the first roll and contacting a second surface of the rolling material opposite to the first surface, and a power providing unit for providing power to each of the first and second rolls to adjust a ratio between angular velocities of the first and second rolls.
Claims14
An asymmetric rolling method comprising:
- disposing a rolling material having first and second surfaces between a first roll and a second roll having a diameter greater than that of the first roll, the rolling material having a crystal structure that includes a primary axis and a basal plane perpendicular to the primary axis;
- adjusting power provided to first and second rolls using a power providing unit to control linear velocities of the first and second rolls to be the same such that a shear strain applied by the first roll to a first surface of a material rolled therebetween is greater than a shear strain applied by the second roll to a second surface of the material rolled therebetween;
- and
- rolling the rolling material between the first and second rolls,
- wherein in the rolling the rolling material, an orientation of the crystal is arranged to improve formability by controlling texture of a rolled material, and
- wherein in the rolling the rolling material, the basal plane slip system of the rolling material is tilted by an angle greater than 0 degrees and smaller than 90 degrees with respect to a rolling direction.
An asymmetric rolling method comprising:
- placing a rolling material having first and second surfaces between a first roll and a second roll having a diameter greater than that of the first roll, the rolling material having a crystal structure that includes a primary axis and a basal plane perpendicular to the primary axis;
- coupling a third roll having a diameter greater than that of the first roll to the first roll to support the first roll on a side opposite to the second roll;
- adjusting power provided from a power unit to each of the second and third rolls to control linear velocities of the first roll and the second roll to be the same such that a shear strain applied by the first roll to a first surface of a material rolled therebetween is greater than a shear strain applied by the second roll to a second surface of the material rolled therebetween;
- and
- rolling the rolling material between the first and second rolls,
- wherein in the rolling the rolling material, an orientation of the crystal is arranged to improve formability by controlling texture of a rolled material, and
- wherein in the rolling the rolling material, the basal plane slip system of the rolling material is tilted by an angle greater than 0 degrees and smaller than 90 degrees with respect to a rolling direction.
An asymmetric rolling method for rolling a rolling material by using at least one pair of working rolls, the method comprising:
- rolling a first roll with a first diameter and a second roll with a second diameter larger than the first diameter at the same linear velocity using power provided by a power providing unit,
- wherein the rolling material has a crystal structure that includes a primary axis and a basal plane perpendicular to the primary axis,
- wherein in the rolling the rolling material, an orientation of the crystal is arranged to improve formability by controlling texture of a rolled material, and
- wherein in the rolling the rolling material, the basal plane slip system of the rolling material is tilted by an angle greater than 0 degrees and smaller than 90 degrees with respect to a rolling direction.
Dependencies are inferred from the claim text.