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What is it called when you heat and cool metal?
Heat treatment is the process of heating and cooling metals to change their microstructure and to bring out the physical and mechanical characteristics that make metals more desirable.
What is the term for rapid cooling after heat treatment?
quenching
In materials science, quenching is the rapid cooling of a workpiece in water, oil or air to obtain certain material properties. A type of heat treating, quenching prevents undesired low-temperature processes, such as phase transformations, from occurring.
What is the process of heat treatment of metals followed by slow cooling?
In stress relief annealing, the metal is heated to a lower temperature about 650 degree and is kept at this temperature for some time in the furnace to remove the internal stress of metal followed by slow cooling.
What is called normalizing process?
Normalizing is a heat treatment process that is used to make a metal more ductile and tough after it has been subjected to thermal or mechanical hardening processes. This heating and slow cooling alters the microstructure of the metal which in turn reduces its hardness and increases its ductility.
What happens to metal when heated then cooled?
The metal is heated to a predefined temperature then cooled by air. The resulting metal is free of undesirable impurities and exhibits greater strength and hardness. Normalising is often used to produce a harder and stronger steel, albeit one that is less ductile than that produced by annealing.
What is meant by Austempering?
Austempering is a heat treating process for medium-to-high carbon ferrous metals which produces a metallurgical structure called bainite. It is used to increase strength, toughness, and reduce distortion.
What is tempering metal process?
tempering, in metallurgy, process of improving the characteristics of a metal, especially steel, by heating it to a high temperature, though below the melting point, then cooling it, usually in air. The process has the effect of toughening by lessening brittleness and reducing internal stresses.
What is meant by carburizing?
Carburising is a thermochemical process in which carbon is diffused into the surface of low carbon steels to increase the carbon content to sufficient levels so that the surface will respond to heat treatment and produce a hard, wear-resistant layer.