Express 71/1000 as a decimal
What is heat treatment and why is it done?
The heat treatment can be defined as a combination of processes or operations in which the heating and cooling of a metal or alloy are done in order to obtain desirable characteristics without changing the compositions. Some of the motives or purpose of heat treatment are as follows: > In order to improve the hardness of metals. > For the softening of the metal. > In order to improve the machinability of the metal. > To change the grain size. > To provide better resistance to heat, corrosion, wear etc. Heat treatment is generally performed in the following ways: > Normalizing > Annealing > Spheroidising > Hardening > Tempering > Surface or case hardening
What is Six Sigma?
Six Sigma is a data-driven methodology and approach for eliminating defects in any process from manufacturing to transnational and from product to service.