Method for producing coated and hardened components of steel...

C - Chemistry – Metallurgy – 21 – D

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C21D 8/02 (2006.01) C23C 2/02 (2006.01) C23C 2/06 (2006.01) C23C 2/12 (2006.01)

Patent

CA 2705700

The invention relates to a method for the production of a hardened component made of a hardenable steel, wherein the steel strip is exposed to a temperature increase in an oven, and is thus exposed to an oxidizing treatment such that a surface oxide layer is created, and subsequently a coating using a metal or a metal alloy is carried out. The strip is heated and at least partially austenitized for producing an at least partially hardened component, and subsequently cooled and thereby hardened. The invention also relates to a steel strip produced according to said method.

L'invention concerne un procédé servant à fabriquer une pièce trempée en un acier pouvant être trempé et consistant à soumettre la bande d'acier à une augmentation de température dans un four et simultanément à un traitement d'oxydation, de façon à produire une couche d'oxyde superficielle, à exécuter ensuite un revêtement avec un métal ou un alliage métallique, à réchauffer la bande servant à produire une pièce trempée au moins partiellement, à austéniser au moins partiellement ladite bande, puis à la refroidir et à la tremper. L'invention concerne également une bande d'acier fabriquée selon ce procédé.

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