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A 600 mm long job of diameter 150 mm of AISI 4140 steel is to be turned with a depth of cut of 1.5 mm and feed rate 0.25 mm/rev. The following data is applicable for the problem:
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written 4.7 years ago by
teamques10
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Labour cost per hour = Rs. 12.00
Machine overhead per hour = Rs. 40.00
Grinding cost per hour = Rs. 15.00
Grinding machine overhead per hour = Rs. 50.00
ldle time = 5 minutes
Taylor's tool life equation is given by $\mathrm{VT}^{0.22}=475$
The operation can be carried out using tungsten …
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