quenching is rapid cooling of steel to be heat treated, there are basically four types of quenching:

1- by water.

2- by oil.

3- by air.

4- by furnace.

water oil air furnace

tensile stress 175*104 112*104 88*104 52*104

(N/mm2)

That is the correct spelling of "quenching" (eliminating, extinguishing).

S. A. B. Jama has written:

'An examination of the microstructure and properties of medium and high alloy steels prepared by rapid quenching from the liquid state'

Color quenching is the attenuation of photons produced by a scintilator due to absorption and scattering.

This effect, combined with the chemical quenching (attenuation of the transfer of energy from the solvent to the scintillator gives the total quenching effect of the scintillator/solvent mix.

The fluid for quenching is specific for each type of steel; choosing an inappropriate fluid lead to bad results.