Heat Treatment Process Critical Thinking: 1.Compare the different kinds of heat treatment process. 2.Identify the process and procedure of the different kinds of HT process. 3. Give examples of all the applications used on each HT process.

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.