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Heat treatments allow the structure of the material to be changed to achieve the required hardness properties. Polydec SA carries out some of these treatments in-house and subcontracts the rest to specialist partners.

In most cases, tempering is necessary for several reasons:

  • reducing mechanical wearing
  • creasing the useful life
  • avoiding problems of deformation during assembly
  • guaranteeing functionality (for example for test points)

The structural hardening of steel is obtained by heating the parts to a temperature of between 800 and 1000°C, and then quickly cooling them. This treatment makes the steel harder, but also more brittle. To achieve a good compromise, parts are heated a second time to a certain temperature that depends on the desired hardness. This stress relief is called "tempering".

Other surface treatments can also be performed to finish parts, for example for aesthetic or other reasons. For more information, refer to the polishing and plating sections.

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