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Annealing,in general,involves heating to predetermined temperature,holding at this temperature,and finally cooling at a very slow rate.The temperature,to which steel is heated,and the holding time are determined by various factors such as the chemical composition of steel,size and shape of steel ...
In machining, boring is the process of enlarging a hole that has already been drilled (or cast), by means of a single-point cutting tool (or of a boring head containing several such tools), for example as in boring a gun barrel or an engine cylinder.
The use of a cutting tool with a series of teeth that is used to change the shape or dimensions of a hole. Broaching can also be used to remove material from a workpiece surface.
Bronizing is one of the recent methods of surface hardening,which may be applied to any ferrous material but is generally adopted for carbon steel and tool steel.
A common cutting tool material that is used to make both index able inserts and solid cutting tools. They provide a cutting edge that is very hard and wear resistant.
This process is specifically used for improving wear resistance of mild,plain carbon or very low alloy steels.Carbonitriding is carried out at low temperatures in the range 800 to 870 degree in a gas mixture consisting of a carburizing gas and ammonia.
This is the most widely used process for surface hardening of steels.It is carried out on low carbon steel which contain from 0.01 to 0.25 percent carbon and known as carburizing steels.
An unwanted piece of metal that is removed from a workpiece. Chips are formed when a tool cuts or grinds metal. This type of process is known as chipping.
