Test report no. PLBO/15: field tests of PERPRO tips grade RD107 copy turning steel B.S.4
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College of Aeronautics, (Cranfield)
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SUMMARY A batch of 232 Rammer Butt Stems were machined at P. and V. (Mining and Engineering) Ltd., with alternate tips of SIT and RD 107. The results showed that under the same cutting conditions the RD107 gave more pieces per edge than did the S1P. It is suggested that further field trials should be carried out to confirm this result.