Sintering metal powder and a process for making a sintered...

B - Operations – Transporting – 22 – F

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B22F 1/00 (2006.01) B22F 3/16 (2006.01) B22F 3/22 (2006.01)

Patent

CA 2021520

A sintering metal powder consisting of metal particles having a particle diameter distribution including a plurality of peaks. The larger of the two particle diameters at every adjoining two, respectively, of the peaks has a ratio of between 5 and 10 to the smaller. The height of one of every adjoining two of the peaks has a ratio of between 1 and 5 to that of the other that is not higher than the one peak. The particle diameter at one of every adjoining two of the peaks which is not higher than the other is smaller than that at the other peak. The particle diameter at the highest peak is between 30 and 80 microns. A process for making a sintered product from such a powder is also disclosed.

La présente invention a pour objet une poudre métallique de frittage composée de particules de métal de diamètre maximal largement distribué. Le ratio de la plus grosse particule dans chacune des paires de particules réunies est de l'ordre de 5 à 10 par rapport à la plus petite particule. La hauteur de l'une de toutes les crêtes adjacentes appariées offre un rapport de l'ordre de 1 à 5 ne dépassant pas la hauteur de la crête en question. Le diamètre d'une des particules dans chacune des particules appariées dans chaque crête qui ne dépasse pas le diamètre de l'autre est plus petit que celui de l'autre crête. Le diamètre de la particule à la plus haute crête est de l'ordre de 30 à 80 micromètres. Un procédé pour la fabrication d'un produit fritté à partir de la poudre en question est également visé par les présentes.

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