Heat Treatments. Produced by Neil Liggett.

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Presentation transcript:

Heat Treatments. Produced by Neil Liggett. The Processes.

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.

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

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

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 – www.technologystudent.com/images4/heatt4.gif

Heat Treatments. The charts represent colours that steels turn at various temperatures - Source: members.optushome.com.au/.../Casting/Assab2.jpg