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Explain the Effect of Cutting Speed
Increase in cutting speed improves the surface finish due to the continuous reduction in built up edge. The curve a represents the machining of steels except high alloy grade steels. In the beginning the surface roughness increases when cutting speed changes from V1 to V2. This is due to the beginning of built up edge formation which reaches its maximum value at the cutting speed V2. Then the formation of built up edge is reduced due to the rise in temperature and at cutting speed V2 it almost disappears. This reduces the height (H) of micro irregularities. There is almost no hump on the curve B obtained in machining high alloy steels. Non-ferrous metal and cast iron, this is due to the completed absence of built up edge formation.
A singly excited magnetic device with a moving iron element is illustrated in the figure below. g = 0.10 mm d = 2.0 cm b = 3.0 cm Assume the mmf in the iron and th
In a 15 TR ammonia refrigerator plant the condensing temperature is 25 0 C and the evaporative temperature is -10 0 C. The refrigerant ammonia is subcooled by 50C before passing th
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why compression molding process is impractable for thermoplastics?
CLASSIFIC A TION : The steam turbines can be classified as follows: 1 . In accordance to method of steam expansion: (a) Impulse (b) Reaction. 2 . In
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The 13ft long beam
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