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Hardening and Annealing

Precise thermal material treatment

By using inductive hardening, annealing and tempering, the hardness and wear resistance of workpieces can be increased.

Inductive Hardening, Annealing and Tempering

Inductive hardening

Inductive hardening increases the quality of building and construction parts made of steel, cast steel or cast iron. The parts are heated to approx. 900 °C and then immediately cooled. Tempering usually follows the hardening process. Here, the workpiece is heated again, but to a lower temperature (150 °C to 300 °C). This decreases the extreme hardening strain without any substantial reduction in the hardness. It also reduces the brittleness of the hardened structure and improves its toughness.

Annealing involves heating up a workpiece to a certain temperature and keeping it there.

Annealing

Generally, a slow cooling follows, with the temperature range depending on the material. For all types of annealing processes, even heating with regard to the surface and the penetration depth is important. There are several types of annealing, for example, normalization or process annealing.

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Nikolas Hunzinger
Induction Sales
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