11
Evans Steven Martin, Bell Andrew: Methods of manufacturing rotary drill bits. Camco Int, April 26, 2000: EP0995876-A2 (65 worldwide citation)

A rotary drill bit is manufactured by a powder metallurgy process by placing a metal mandrel 54 in a mould 38, packing the mould 38 with particulate matrix-forming material 50, infiltrating the material with a molten binding alloy, and cooling the assembly to form a solid infiltrated matrix bonded t ...


12
Gunes Ecer: Method for preparing fully dense, near-net-shaped objects by powder metallurgy. Klein & Szekeres, June 16, 1987: US04673549 (59 worldwide citation)

A method of manufacture of objects by consolidation of powdered metals, alloys, ceramics, or their mixtures is disclosed. The method comprises the steps of preparing a shaped, preferably ceramic, shell, placing it inside a metal or ceramic can, filling both the shell and space between the shell and ...


13
Benjamin John Stanwood: Consolidated composite materials by powder metallurgy. The International Nickel Company, Pinel Maurice L, January 15, 1974: US3785801 (57 worldwide citation)

Directed to the powder metallurgy production of consolidated metal products wherein the starting material comprises dense wrought particles containing at least 15 percent by volume of a compressively deformable metal with the remainder being one or more other metals or non-metals with the internal s ...


14
Prabhat Kumar: Method of making powders and products of tantalum and niobium. Cabot Corporation, David J Koris, September 7, 1993: US05242481 (56 worldwide citation)

A powder of tantalum, niobium, or an alloy thereof, having an oxygen content less than about 300 ppm, and the production thereof without exposure to a temperature greater than about 0.7 T.sub.H. A powder metallurgy formed product of tantalum, niobium, or an alloy thereof, having an oxygen content le ...


15
Joseph Liburdi, Paul Lowden, Keith Ellison: Powder metallurgy repair technique. Liburdi Engineering, Morgan & Finnegan, October 20, 1992: US05156321 (55 worldwide citation)

To repair or join sections of a metal article, matching metal powder is sintered in the solid state to form a porous structure in the joint. A layer of matching powder, modified to incorporate melting point depressants such as boron and silicon is subsequently added to the surface of the sintered re ...


16
Masayuki Niino, Akio Suzuki, Toshio Hirai, Ryuzo Watanabe, Tohru Hirano, Nobuhito Kuroishi: Method of producing a functionally gradient material. National Aerospace Laboratories of Science and Technology Agency, Toshio Hirai, Ryuzo Watanabe, Daikin, Sumitomo Electric, Wenderoth Lind & Ponack, June 14, 1988: US04751099 (48 worldwide citation)

The present invention relates to a method of producing a functionally grant material whose components and structure are continuously adjusted by the coating, plating and powder metallurgy techniques to change its function in turn and provide a method of producing a functionally gradient material sup ...


17
Lot W Short Jr: Drill bit and method of metallurgical and mechanical holding of cutters in a drill bit. NL, William E Johnson Jr, Douglas H May Jr, Carl O McClenny, June 12, 1984: US04453605 (46 worldwide citation)

Disclosed is a method and apparatus for mechanically and metallurgically holding a cutter in a drill bit pocket. The method includes using powder metallurgy techniques in the formation of a drill bit member having a plurality of pockets configured to inhibit displacement of cutters out of the pocket ...


18
Eric F Drake: Metal cutting tools utilizing gradient composites. Reed Rock Bit Company, Michael J Caddell, January 18, 1983: US04368788 (45 worldwide citation)

A rolling cutter drill bit is disclosed having cutters manufactured by powder metallurgy techniques, said cutters having gradient composite metallic structures in the cutting areas arranged to reduce or eliminate physical and metallic discontinuities and stress risers.


19
Mitsuhiro Matsushita, Shinpei Inamura: Method for producing granulated material. Mikuni Corporation, Armstrong Westerman Hattori McLeland & Naughton, April 3, 2001: US06210625 (43 worldwide citation)

The invention is a method of making a novel spherical form of granulated products that can be effectively used in various product forms in drug, fertilizer, foodstuff, feed, agricultural chemical, catalyst, ceramics, powder metallurgy, detergent, plastic, and bio-material fields, for instance, as ca ...


20
Jean Claude Nicolas, Raymond Saulnier: Process for direct shaping and optimization of the mechanical characteristics of penetrating projectiles of high-density tungsten alloy. Cime Bocuze, Oblon Spivak McClelland Maier & Neustadt, December 3, 1991: US05069869 (42 worldwide citation)

A process for shaping penetrating projectiles useful in the manufacture of military ammunition, comprising: preparing an alloy of tungsten, nickel, iron and copper by powder metallurgy, compacting the alloy mass into a rough shaped blank having an axis of revolution, sintering the rough shaped blank ...



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