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Explain Rake angle - Angles of a drill
It is also known as helix angle .It is the angle formed between a plane containing the drill axis and the leading edge of the land. It can have a positive, negative or zero value. For a right hand flute its value is positive, for a left flute negative and for parallel flutes it is zero. For most drill the value of rake angle varies from 0 to as high as 48.However, 16 to 32 ranges is quite common for normal materials. Higher values are suitable for softer materials and lower values for harder materials. The power or torque required to rotate the drill is greatly influenced by this angle. Larger the value of this angle, lesser will be the torque required and vice-versa
Q. Use of Stainless Steels in welding? Considerable care must be exercised to obtain sound, crack-free welds. These difficulties are pronounced when welding very high-chromium
TYPICAL JOINT DESIGNS THAT ARE USED IN ELECTRON BEAM WELDING Butt joint : Butt joint is the preferred joint as it involves only a small amount of machining prior to wel
classification of polymers
(a) Show that two statements of Second Law of thermodynamics are equivalent to each other. (b) A house that was heated by electric resistance heater consumed 1200 KWh of electri
ENTHALPE
hello. what is the shape of the fractur of brittle material after applied th tensil test.
Find out change in diameter: A cylindrical shell, 0.8 m in a diameter and 3 m long is along with 10 mm wall thickness. If the shell is subjected into an internal pressure of 2
Example of change of enthalpy: Q 0.5kg/s of a fluid flows in steady state process. The properties of fluid at the entrance are measured as p 1 = 1.4bar, density = 2.5k
(a) Explain the procedure of removal for valves. (b) How should one remove valve guide from cylinder head? (c) What is the use of piston side base? (d) What is the use of
Disadvantages of electron beam machining
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