C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 1/05 (2006.01) C22C 29/06 (2006.01)
Patent
CA 2759259
Composite articles, including composite rotary cutting tools and composite rotary cutting tool blanks, and methods of making the articles are disclosed. The composite article includes an elongate portion. The elongate portion includes a first region composed of a first cemented carbide, and a second region autogenously bonded to the first region and composed of a second cemented carbide. At least one of the first cemented carbide and the second cemented carbide is a hybrid cemented carbide that includes a cemented carbide dispersed phase and a cemented carbide continuous phase. At least one of the cemented carbide dispersed phase and the cemented carbide continuous phase includes at least 0.5 percent by weight of cubic carbide based on the weight of the phase including the cubic carbide.
L'invention porte sur des articles composites, comprenant des outils de découpe rotatifs composites et des ébauches d'outils de découpe rotatifs composites, et sur des procédés de fabrication des articles. L'article composite comprend une partie allongée. La partie allongée comprend une première région composée d'un premier carbure cimenté, et une seconde région liée de façon autogène à la première région et composée d'un second carbure cimenté. Au moins l'un du premier carbure cimenté et du second carbure cimenté est un carbure cimenté hybride qui comprend une phase dispersée de carbure cimenté et une phase continue de carbure cimenté. Au moins l'une de la phase dispersée de carbure cimenté et de la phase continue de carbure cimenté comprend au moins 0,5 pour cent en poids de carbure cubique sur la base du poids de la phase comprenant le carbure cubique.
Riches Mckenzie & Herbert Llp
Tdy Industries Inc.
LandOfFree
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