Induction Annealing is a generalized term referring to heating a metal to a specified temperature and then cooling to produce a “softened” material that is more easily formed.
Induction annealing is a generalized term referring to heating a metal to a specified temperature and then cooling at a rate that will produce a refined microstructure. Using Induction, metal can be rapidly heated to temperature at controlled an repeated cycles without contacting the metal target or heating the ambient atmosphere surrounding it. Cooling vats for ferrous metals are usually in open air resulting in the formation of pearlite. Non-ferrous metals, such a copper or brass, can be subjected to rapid cooling by quenching in water. The results “soften” the material and make it more easily formed to a required shape.
Induction Annealing is commonly used in wire processing, precision tool forming, and tube forming applications. Typical materials for induction annealing include aluminum, carbon Steel, and carbide. Some of the benefits of Induction annealing are: power on demand; rapid heat cycles; elimination of continuous power to large heating area (i.e. oven); cost savings due to reduced power usage; direct heating of the metal and not the ambient air as in convection processes; safer process than open flame methods; improved process control for even heating and uniform heating to a given temperature that is not dependent on operator skill.
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