METHOD FOR BENDING METAL SHEET AND DEVICE FOR REGULATING RESIDUAL STRESS
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United States of America Patent
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app pub date -
Feb 21, 2017
filing date -
Jan 14, 2011
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Abandoned
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Abstract
A method for bending a flat workpiece is provided. The method may include applying heat or pressure to the workpiece at a range within a first width from an edge with a residual stress formed by cutting so as to reduce the residual stress, and bending the workpiece along a bending line after applying the heat or pressure.
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