BIMETAL LAMINATE STRUCTURE AND METHOD OF MAKING THE SAME
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United States of America Patent
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Issued Date -
Jun 3, 2010
app pub date -
Dec 1, 2008
filing date -
Dec 1, 2008
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Abandoned
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Abstract
Bimetal laminate structures and an improved method for manufacturing the same are provided herein. In one preferred embodiment, the laminate structure includes a first constraining layer that is fabricated from a metallic material, such as stainless steel. A second constraining layer that is appreciably thicker than the first is also included. The second constraining layer is fabricated from a different metallic material, such as low-carbon cold rolled steel. An adhesive layer spans between and rigidly bonds the first and second constraining layers. The first and second constraining layers have a thickness ratio, a yield strength ratio, and a springback ratio that are collectively optimized such that the laminate structure can be formed, preferably through a deep drawing operation, to define one or more depressions/basins of a predetermined depth without delaminating or cracking. The adhesion strength of the adhesive layer is also engineered to prevent separation of the two constraining layers.
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