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Types of mechanical forces

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A force exerted on a body can cause a change in either the shape or the motion of the body.The unit of force in SI system is the Newton(N) and CGS system is dyne.No solid body is perfectly rigid and when force are applied to it,changes in dimension occur.such changes are not always perceptible to the human eye since they are negligible. For the example,The span of a bridge will sag under the weight of a vehicle and a spanner will bend slightly when tightening a nut. It is also important for civil engineers and designers to appreciate the effects of forces on materials.Together with their mechanical properties of the materials. There three main types of mechanical forces that can act on a body.They are 1)Tensile force 2) compressive force and 3) shear force
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METHODS OF APPLICATIONS OF CUTTING FLUIDS :

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The method of application of a cutting fluid is very important and depends on the particular operation. These methods vary from hand applications such as use of brush or oil-can to high pressure applications.For high production. The following methods are used.

   1)Flood method,

   2) Jet method,and

   3) Mist method.

1) Flood method :

In this method,a reciprocating pump is used to force the coolant over the work and tool.The outlet of the pump is connected to a nozzle through flexible pipe.The nozzle can be adjusted to direct the stream of the fluid at the cutting zone.This is the most common method of application of cutting fluid.


2) jet method :

In jet method,a small jet of fluid at high speed is directed at the point of metal separation from the underneath the tool.In high-speed jet system gear or vane type pump is used to maintain high pressure.


3) Mist method :

In mist method,the fluid is passed through a specially designed nozzle to form very fine droplets(mist).This mist is directed at the cutting zone at high speed.It has better cooling effect than flood or jet methods.

Comments

  1. Deepak26 March 2020 at 04:42

    The information is really useful and truly motivating. I love this kind of blogs..
    More information

    ReplyDelete

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