1. Heat Treatments. Produced by Neil Liggett.
The Processes.

2. Heat Treatments.
Heat Treatment is carried out to give a material the desirable properties, both mechanical and physical, to enable it to carry out its function when formed into engineering components.

3. Heat Treatments. Hardening –
A material is hardened to be more resistant to wear & abrasion.
Heat treatment furnaces are used to induce the high temperatures.

4. Heat Treatments. Annealing – Exact opposite to hardening,
Relieves internal stresses,
Induces softness for machining, forming etc.

5. Heat Treatments. Tempering –
To reduce brittleness in a hardened steel,
Relieve internal strains in material,
Colour schemes can be identified through the temperatures of the tempering process.
View the link of tempering –

6. Heat Treatments.
The charts represent colours that steels turn at various temperatures -
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