Powder metallurgical composition comprising carbon black as...

Details Powder metallurgical composition comprising carbon black as... Powder metallurgical composition comprising carbon black as...

B - Operations, Transporting

22

F

B22F 1/00 (2006.01) B22F 3/00 (2006.01) C22C 33/02 (2006.01)

Patent

CA 2572131

The present invention relates to a powder metallurgical composition comprising an iron or iron-based metal powder, a lubricant and/or a binder, and carbon black, wherein the amount of carbon black is between 0.001 and 0.2% by weight, and the carbon black has a specific surface area above 100 m2/g. The invention also relates to a method of increasing apparent density of a powder metallurgical composition comprising an iron or iron-based metal powder, a binder, carbon black, and optionally a lubricant, the method comprising adding an amount of carbon black to said powder metallurgical composition, wherein the amount of carbon black is between 0.001 and 0.2% by weight and the carbon black has a specific surface area above 100 m2/g.

L'invention concerne une composition métallurgique en poudre renfermant du fer ou une poudre à base de fer ainsi qu'une faible quantité, c'est-à-dire, 0,001-0,2 % en poids, de noir de carbone. Le noir de carbone fait office d'agent améliorant l'écoulement.

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