Heat Treatment of Non – Ferrous Metal

Generally annealing is carried out on non-ferrous metals. Annealing makes the metal soft. This property enables the worker to work upon the metal easily, and also prevents the metal to crack or fracture while being hammered, forged or rolled. Copper Copper tends to become hard and brittle, when hammered or cold worked. It can be softened by annealing. All plates, rods, tubes etc of copper are thoroughly annealed before use. Annealing is done by heating to a dull red colour (650°C), keeping the pieces at this temperature for a few…

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