Heat Treatment Of Steel



Heat Treatment Of Steel

 

Steel of different qualities can be obtained by means of the following heat treatment processes.

(i)      ANNEALING

It is the process of heating steel or any other substance to bright redness and then cooling it very slowly. Steel obtained by this process is soft, weak and ductile.

(ii)    HARDENING OR QUENCHING

It is the process of heating steel to bright redness and then cooling it suddenly in water or oil. Steel obtained by this process is extremely hard and brittle. It does not possess elasticity and is called hard steel.

(iii)  TEMPERING

It is the process of heating steel at constant temperature much below redness (200-350°C) for some time and then cools it slowly. Steel obtained by this process is neither very hard nor so brittle.

About Saweel Ur Raheem

Check Also

2nd Year Chemistry Notes : Short Questions Chapter 11

Chapter 11 “ Alkohols,Phenols and Ethers” Past Papers Short Questions Solved of Bahawalpur Board,DG Khan ...

© Copyrights 2014. All rights are reserved www.latestcontents.com