Abstract :
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In the present work various parametersof rotor has
been discussed for reliability of disc brake.Brake drum used in
past design has been replaced by disc brakes which find
application in motor bikes, racing bicycles,cars.It is having
advantages of compactness,strength,water spillage out side the
brake surface and heat dissipation by ventilation. The
metallurgical properties of a rotor determine its strength, noise,
wear and braking characteristics.Proper composition of the rotor
is carefully selected and controlled during the casting. The rate of
cooling also affects the hardness of a rotor. If a rotor is too hard,
it will increase pad wear and noise.In this paper rotor
metallurgy,cooling ribs,heat dam,surface finish have been
explored for the reliability
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