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US 10,589,327 B2Granted
Apparatus and method for rolling metal
AssigneeArconic Inc.
InventorsPatricia Stewart, Neville C. Whittle, Dharma Maddala, Shawn Clark, Thomas Kasun, Julie Wise, Ming Li, Raymond J. Kilmer
Life of this patent
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Abstract
An apparatus and method for rolling aluminum sheet uses a texture roll to roll the sheet while is it hot and has reduced yield strength. The texture rolling may be used to remediate defects in the sheet at a variety of stages in rolling, and may facilitate subsequent rolling stages.
Claims30
A method for rolling an aluminum alloy metal sheet provided at a first state to achieve a second state, comprising:
- rolling the aluminum alloy metal sheet with an EDT texture roll when the aluminum alloy metal sheet is at a temperature between 250 to 970 degrees Fahrenheit,
- wherein the rolling comprises contacting a bare surface of the aluminium alloy metal sheet with the EDT texture roll,
- wherein the rolling comprises imparting an EDT texture to a surface of the aluminum alloy metal sheet to achieve the second state;
- and
- wherein, in the second state, the bare surface of the aluminum alloy metal sheet comprises a background surface roughness, and wherein the aluminum alloy metal sheet is free of surface defects that are more than 2 micrometers Ra different than the background surface roughness.
2 more elements
Dependencies are inferred from the claim text.