Method of producing a cutting blade and cutting blade thus...

B - Operations – Transporting – 23 – D

Patent

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Details

B23D 65/00 (2006.01) B23K 26/34 (2006.01) B26B 9/00 (2006.01)

Patent

CA 2556034

The invention relates to a method of producing a blade (1) for a cutting tool, such as a knife, a pair of scissors, a saw, a household appliance, an electrical appliance or even an industrial machine. According to the invention, the blade (1), which is made from steel or a stainless steel alloy, comprises at least one cutting edge which extends along at least part of the periphery thereof. The inventive method is characterised in that it comprises the following steps consisting in: a) producing a blade body (2) having at least one free edge close to the position of each cutting edge (3); b) spraying a powder filler material with a greater hardness than that of the blade body onto at least one free edge; c) subjecting the powder filler material to a laser beam such as to form a bead or strip along at least part of the free edge; and d) forming the cutting edge in the bead or strip of filler material. In this way, the cutting edge of cutting tools equipped with one such blade have high wear resistance.

Procédé de fabrication d'une lame (1) pour outil tranchant, notamment pour un couteau, une paire de ciseaux, une scie, un appareil ménager ou électroménager, ou encore une machine industrielle, cette lame (1) étant réalisée en un acier ou un alliage d'aciers inoxydables et comprenant au moins une arête tranchante s'étendant sur au moins une partie de sa périphérie, caractérisé en ce qu'il comprend les étapes suivantes: a) réaliser un corps (2) de lame possédant au moins un bord libre prévu au voisinage de l'emplacement de la ou de chaque arête tranchante (3), b) projeter sur au moins un bord libre un matériau d'appoint sous forme pulvérulente d'une dureté supérieure à la dureté du corps de la lame, c) soumettre la poudre de matériau d'appoint à un faisceau laser de manière à former un cordon ou une bande sur au moins une partie dudit bord libre, d) former l'arête tranchante dans le cordon ou la bande de matériaud'appoint. Les outils tranchant équipés d'une lame ainsi réalisée ont une grande résistance à l'usure de l'arête tranchante de la lame.

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