Method of producing a sintered body, in particular a...

Details Method of producing a sintered body, in particular a... Method of producing a sintered body, in particular a...

B - Operations, Transporting

22

F

B22F 5/08 (2006.01) B22F 7/06 (2006.01)

Patent

CA 2223197

There is described a method of producing a sintered body (1) having different cross-sections along a main axis (5), in particular a toothed-belt or chain wheel, by compression moulding a sintering powder in the direction of the main axis (5) and subsequent sintering. To create advantageous manufacturing conditions, it is proposed that at least two partial bodies (6, 7), which can be form-fitted into each other in the direction of the main axis (5), are pressed from sintering powder, which partial bodies each form an axial portion of the sintered body (1) with different cross-sections, and that the separately pressed and possibly presintered partial bodies (6, 7) are jointly sintered after joining them together.

Méthode pour la fabrication d'un corps fritté (1) possédant différentes sections le long d'un axe principal (5), notamment un pignon pour chaîne ou courroie crantée par une opération de moulage sous pression d'une poudre à fritter, réalisé dans la direction de l'axe principal (5), suivi d'une opération de frittage. Pour la création de conditions de fabrication favorables, il est suggéré qu'au moins deux pièces (6 et 7), qui pourraient être ajustées à force l'une dans l'autre dans la direction de l'axe principal (5), soient réalisées par moulage sous pression de poudre à fritter, ces pièces constituant une portion axiale du corps fritté (1) de sections différentes, et que ces pièces (6 et 7) moulées séparément et qui pourraient être soumises à une opération de frittage préalable, soient soumises au frittage après leur assemblage.

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