Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Metal and nonmetal in final product
Patent
1996-01-26
1998-10-27
Jenkins, Daniel J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Metal and nonmetal in final product
419 23, B22F 302
Patent
active
058289402
ABSTRACT:
A formable composite magnetic flux concentrator material is composed of about 65% to 90% ferromagnetic material, such as iron powder, and about 35% to 10% binder, the binder being a mixture of an epoxy and one or more catalysts. The concentrator material is provided in a formable state as a putty-like body which can be worked into any desired shape dictated by the configuration of the induction heating coil used in a particular application. In one form, the density of the concentrator material is increased by application of vibration, compression and vacuum to de-air the material and to reduce voids therein. In another form, the iron powder comprises spherical-shaped particles and non-spherical shaped powders chosen in a ratio to maximize the density of material available.
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Exhibit A is an article entitled "High-Frequency Magnetic Materials", authored by W.J. Polydoroff, copyright 1960, published by John Wiley & Sons, Inc., New York, New York, pp. 1-9, which discloses magnetic materials and properties.
Exhibit B are product brochures entitled "Carpenter-Magnetic Alloys", published by Carpenter Technology, Carpenter Steel Division, Reading, Pennsylvania, including a product brochure on 49 alloy and on silicon iron core material, published Nov., 1988, and Mar., 1989, respectively.
Exhibit C is an article entitled "Production and Concentration of Magnetic Flux for Induction (Eddy Current) Heating Application", authored by Robert S. Ruffini, published in Industrial Heating Magazine, Nov. 1994, pp. 41-45, which discloses various concentrator materials and magnetic flux characteristics.
Jenkins Daniel J.
Learflux Inc.
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