During the tempering process the metal being treated is heated in a temper furnace to a specified temperature for a period of time based on the desired level of hardness, strength, and ductility.
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Furnace tempering is a heat treatment process which uses a furnace to heat a component or batch of components to a set temperature that is below the lower critical temperature. Typically Furnace Tempering is used subsequently with Induction Hardening to bring down the surface hardness of the component to a specific value after the hardening process to reduce brittleness and increase
toughness and ductility.
Crucial parameters such as temperature, heating time and speed of heating are precisely controlled to ensure excellent reproduce-ability and that tempering is achieved evenly throughout the component.
Tempering helps to relieve stress making the metal easier to weld or machine. Increases strength while making the material more flexible and ductile. Increases hardness and introduces wear-resistant properties to the surface or through the entire metal.
Tempering is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy. The reduction in hardness is usually accompanied by an increase in ductility, thereby decreasing the brittleness of the metal.
As a turn of process it is normal for any complete batch of components to be Furnace Tempered at the same time making the process throughout all of the components very consistent.
Furnace process is a process whereby a type of industrial oven designed to heat treat a ferrous metal product and increase its toughness. In metallurgical terms, the toughness of an alloy describes its capacity for elastic deformation and energy absorption before the material fractures.
Tempering will retain (or improve, depending on the alloying elements) the hardness of the steel while reducing the brittleness.
Allows parts to be in service longer due to reduce stress in the steel / alloy
Increases surface durability on components throughout their wear cycle
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