Method for gun barrel manufacture using tailored autofrettage mandrels
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United States of America Patent
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Nov 2, 2004
Grant Date -
Aug 5, 2004
app pub date -
Feb 5, 2003
filing date -
Feb 5, 2003
priority date (Note) -
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Abstract
A method of manufacturing a monobloc gun barrel by calculating an optimal residual stress profile and then applying tailored autofrettage mandrels which are mechanically pressed down the bore of a large caliber barrel, the mandrel size optimized to create a residual stress distribution on the interior of the bore within the design constraints imposed by the worst-case heat flux scenario.
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