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Transformation Hardening
The main features of the laser as a heat source for transformation hardening are:(A) Clean energy source.(B) Energy is localised: no heat spillage.(C) Only surface layer heated: core properties are unaltered.(D) Low heat input: therefore low thermal distortion.(E) Fast process: therefore no oxidation. The process can be a final operation.(F) Self quenching: no water or oil sprays.(G) Easily automated: the laser fits naturally into a numerically controlled system with time sharing between work stations.
Slab hanging: Three similar uniform slabs each having length '2 a ' are resting on edge of table as shown in the figure given below. If each slab is overhung by the maximum
The crate A of weight W=27lb is being pulled to the right by the winch at B. The crate starts at x=0 and is pulled a total distance 15ft over the rough surface for which the coeffi
CLASSIFIC A TIO N: 1. In accordance to number of strokes per cycle: (a) Two stroke (b) Four stroke. 2. In accordance to the fuel being used: (a)
Brazing Vs Welding Following are the differences between brazing and welding. (i) In brazing, the joint surfaces are not raised to fusion point (or melted) and the joint is
Consider fully developed laminar flow with constant properties in a circular tube. Let there be heat transfered to or from the fluid at a constant rate per unit of tube length.Ad
Determine the reaction: The cantilever is shown in the figure given below; determine the reaction when it is loaded. In cantilever at fixed end ( A ) there is three reac
Advantage of flash butt welding 1. Higher weld strength 2. Higher production rate 3. Better heat concentration 4. Simple weld surface preparation 5. Wide range of m
Q. What is Vertical Spoilers? Vertical Spoilers - Use a three-start system of short vertical spoilers arranged in a helical pattern on the top third of the vessel. The exposed
What is the relation between break point elasticity and Yield point elasticity.?
What do you mean by synchromesh device ? explain the basic working of a synchromesh gear box.
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