Abstract: A method and apparatus for manufacturing composite materials are provided. In a first embodiment, a binding material is placed on a heat-resistant filter that is placed on hollow particles in a pressurizable container. Under pressure and heat, the binding material flows through the filter and infiltrates the spaces between the hollow particles. In a further embodiment, composite material wire is produced by coating the surfaces of inorganic fiber bundles with a metal oxide by dipping in a solution of a hydrolyzable organic metal compound and hydrolyzing and heat-treating prior to continuous infiltration under pressure.

Abstract: A method and apparatus for manufacturing composite materials are provided. In a first embodiment, a binding material is placed on a heat-resistant filter that is placed on hollow particles in a pressurizable container. Under pressure and heat, the binding material flows through the filter and infiltrates the spaces between the hollow particles. In a further embodiment, composite material wire is produced by coating the surfaces of inorganic fiber bundles with a metal oxide by dipping in a solution of a hydrolyzable organic metal compound and hydrolyzing and heat-treating prior to continuous infiltration under pressure. In a further embodiment, the apparatus includes orifices with enlarged diameter sections. In a still further embodiment, an apparatus is provided with ultrasonic vibration.

Abstract: A method and apparatus for manufacturing composite materials. In a first embodiment, a binding material is placed on a heat-resistant filter that is placed on hollow particles in a pressurizable container. Under pressure and heat, the binding material flows through the filter and infiltrates the spaces between the hollow particles. In a further embodiment, composite material wire is produced by coating the surfaces of inorganic fiber bundles with a metal oxide by dipping in a solution of a hydrolyzable organic metal compound and hydrolyzing and heat-treating prior to continuous infiltration under pressure. In a further embodiment, the apparatus includes orifices with enlarged diameter sections. In a still further embodiment, an apparatus is provided with ultrasonic vibration.

Abstract: A method and apparatus for manufacturing composite materials are provided. In a first embodiment, a binding material is placed on a heat-resistant filter that is placed on hollow particles in a pressurizable container. Under pressure and heat, the binding material flows through the filter and infiltrates the spaces between the hollow particles. In a further embodiment, composite material wire is produced by coating the surfaces of inorganic fiber bundles with a metal oxide by dipping in a solution of a hydrolyzable organic metal compound and hydrolyzing and heat-treating prior to continuous infiltration under pressure. In a further embodiment, the apparatus includes orifices with enlarged diameter sections. In a still further embodiment, an apparatus is provided with ultrasonic vibration.

Abstract: A system using fiber reinforced metal matrix wire in castings increases the tensile strength of and/or the rigidity the resultant casting. Because the fiber reinforced metal matrix wire is formed by a method that limits the exposure of the fiber to excessive heat, the fiber retains its strength more than conventionally formed wires. This system is applicable to castings for preferential reinforcement—increasing tensile strength and rigidity, and to sandwich structures wherein the composite wires bracket and internal matrix or a metallic layer surrounds and is strengthened by a central composite wire.

Abstract: A method and apparatus for manufacturing composite materials are provided. In a first embodiment, a binding material is placed on a heat-resistant filter that is placed on hollow particles in a pressurizable container. Under pressure and heat, the binding material flows through the filter and infiltrates the spaces between the hollow particles. In a further embodiment, composite material wire is produced by coating the surfaces of inorganic fiber bundles with a metal oxide by dipping in a solution of a hydrolyzable organic metal compound and hydrolyzing and heat-treating prior to continuous infiltration under pressure. In a further embodiment, the apparatus includes orifices with enlarged diameter sections. In a still further embodiment, an apparatus is provided with ultrasonic vibration.

Abstract: A system of gating orifices for continuous pressure infiltration processes eliminates blow-out of the pressurized molten metal matrix material and friction damage to the infiltrated perform. The system includes three or more orifices along a vertical path of an upwardly moving perform which passes from vacuum or atmospheric pressure into a pressurized infiltrating bath of molten metal, then into a pressurized atmosphere in which the matrix fully solidifies, and from there to an atmospheric environment. The entering orifice, at the bottom of the pressurized bath, is elongated in the direction of the perform movement to provide a temperature gradient from above the matrix material melting temperature at the bath to below the solidification temperature farthest from the bath. The resulting liquid-mushy-solid sequence of the matrix material forms a solidification seal to prevent blow out of the pressurized molten metal.

Abstract: A system of gating orifices for continuous pressure infiltration processes eliminates blow-out of the pressurized molten metal matrix material and friction damage to the infiltrated preform. The system includes three or more orifices along a vertical path of an upwardly moving preform which passes from vacuum or atmospheric pressure into a pressurized infiltrating bath of molten metal, then into a pressurized atmosphere in which the matrix fully solidifies, and from there to an atmospheric environment. The entering orifice, at the bottom of the pressurized bath, is elongated in the direction of the preform movement to provide a temperature gradient from above the matrix material melting temperature at the bath to below the solidification temperature farthest from the bath. The resulting liquid-mushy-solid sequence of the matrix material forms a solidification seal to prevent blow out of the pressurized molten metal.

Abstract: A band saw machine is provided with a guide for the blade which repeatedly moves the cutting reach of the blade laterally of its longitudinal axis and in the plane of the reach while the blade is advancing longitudinally to provide greatly improved sawing speed.

Abstract: A replaceable tool for attachment to the periphery of an agricultural disc is formed of an inverted U-shaped investment casting which can be fitted over the marginal edge portion of the disc to present parallel leading and trailing faces connecting side surfaces which converge outwardly of the disc, being inclined at different angles relative to the plane of the disc so as to present on one side of said disc a side surface providing clearance for the disc on that side of the disc and the other side surface being at a greater angle which reduces the areas of the end faces of the tool to reduce resistance to passage of the tool through the ground.

Abstract: Small particles of metal, such as those used in making powder metal compacts, are produced by feeding the end of a metal wire or rod against the edge of a rotating disc and causing a direct electrical current to flow through the wire and disc. This melts the end of the wire and also creates a magnetic field about the wire. The rotation of the disc breaks the electrical contact and forms an arc which causes additional melting of the wire. Contact between the wire and disc takes place within a second electromagnetic field. Continuously advancing the end of the wire causes the intermittent making and breaking of electrical contact. The interaction of the two magnetic fields causes the molten particles to be removed from the area of contact. Means are provided for cooling and collecting the metal particles and for preventing the accumulation of solidified metal particles on the electromagnet or the rotating disc. Vacuum conditions may be used, thus producing a powder of high purity.