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A compound die will be used to blank and punch a large washer out of 6061ST aluminum alloy (the allowance is a = 0.06). sheet

A compound die will be used to blank and punch a large washer out of 6061ST aluminum alloy (the allowance is a = 0.06). sheet stock 3.50 mm thick. The outside diameter of the washer is 50 mm and the inside diameter is 15 mm. Determine (a) the punch and die sizes for the blanking operation, and (b) the punch and die sizes for the punching operation.

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