Manufacturing of low-friction elements

C - Chemistry – Metallurgy – 23 – C

Patent

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C23C 26/00 (2006.01) B24B 1/00 (2006.01) B24B 33/08 (2006.01) C23C 24/02 (2006.01) C23C 24/06 (2006.01) F02F 1/20 (2006.01)

Patent

CA 2704078

A manufacturing method of mechanical elements comprises providing (210) of a mechanical element having a rough curved surface preferably with a surface roughness of more than S. = 0.1 µm. The method is characterized by tribochemically depositing (214) solid lubricant substance directly onto the rough curved surface in transverse directions. A mechanical element has a curved surface. The curved surface has a surface layer of a tribochemically deposited solid lubricant substance. The mechanical element is obtainable by the above method. A tool for manufacturing of such a mechanical element comprises a support portion, at least one tool working surface, means for providing a force pressing the tool towards the curved surface and driving means for moving said at least one tool working surface in two different directions along said curved surface. The working surface comprises an oxide, carbide and/or suicide of an element capable of forming a stable sulfide.

Un procédé de fabrication d'éléments mécaniques comprend la fourniture (210) d'un élément mécanique ayant une surface incurvée rugueuse présentant de préférence une rugosité de surface supérieure à Sa = 0,1 µm. Le procédé est caractérisé par le dépôt tribochimique (214) d'une substance lubrifiante solide directement sur la surface incurvée rugueuse dans des directions transversales. Un élément mécanique dispose d'une surface incurvée. La surface incurvée a une couche de surface sur laquelle a été déposée de manière tribochimique une substance lubrifiante solide. L'élément mécanique peut être obtenu par le procédé ci-dessus. Un outil pour la fabrication d'un tel élément mécanique comprend une portion de support, au moins une surface d'usinage d'outil, des moyens pour fournir une force comprimant l'outil vers la surface incurvée et des moyens d'entraînement pour déplacer ladite ou lesdites surfaces d'usinage d'outil dans deux directions différentes, le long de ladite surface incurvée. La surface d'usinage comprend un oxyde, un carbure et/ou un siliciure d'un élément capable de former un sulfure stable.

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