C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
53/344, 75/1.2
C22C 1/00 (2006.01) C22C 1/02 (2006.01) C22C 1/06 (2006.01)
Patent
CA 2007796
Abstract The fusible alloys or zinc-based alloys are reinforced with ferroaluminum shots to improve the creep resistance of parts used for fire sprinklers, thermal plugs of valves or cylinders, bearings, gears, brackets, fasteners, seals, bushings, rollers, axle housings, cams, guides, lost core plastic molding, inserts, work holding, etc. Other reinforcible matrix alloys include tin-based, lead-based, copper-based, and aluminum-based alloys used for dynamic and structural parts requiring strength and creep resistance. Ferroaluminum shots are comprised primarily of iron and aluminum and they are light, relatively nonreactive with zinc, and bondable to afore-mentioned matrix alloys by using inorganic acid-based fluxes of zinc chloride, ammonium chloride, a mixture of chlorides, or a mixture of chlorides and fluorides. Other fluxes such as organic acid-based chemicals work as a cleaning agent when they can clean surface oxides of both the matrix alloy and reinforcing shots. Materials for alternative reinforcement include conventional steel or iron shots coated with sodium nitrite, ferroaluminum shots coated with sodium nitrite, nickel, copper, monel, refractory metals, copper or nickel-coated metals, copper or nickel-coated plastics, and copper or nickel- coated ceramics. -1-
Lhymn Chang
Lhymn Yoon Ock
Lhymn Chang
Lhymn Yoon Ock
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