A 2 in. diameter bar of steel was turned at 284 rpm and tool failure occurred in

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A 2 in. diameter bar of steel was turned at 284 rpm and tool failure occurred in 10 min. The speed was changed to 132 rpm and the tool failed in 30 min of cutting. Assume that a straight-line relationship exists. What cutting speed should be used to obtain a 60-min tool life of V60?
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Materials and process in manufacturing

ISBN: 978-0471656531

9th edition

Authors: E. Paul DeGarmo, J T. Black, Ronald A. Kohser

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