Abstract: A method and apparatus for the solid-state forming of a metallic feedstock into thin sheet or foil is disclosed that uses improved isothermal roll forging techniques. The improvements include the use of rotatable backup rolls for increasing hollow work roll stiffness, two independent work roll heating controllers, a reduced work roll diameter and other means for precise control of conditions within a feedstock "travelling hot zone" (THZ). The disclosed improvements allow the application of isothermal roll forging techniques to the rolling of thin sheets from difficult-to-work, high-strength metals such as aluminides, intermetallics, superalloys, titanium alloys, ODS composites, beryllium, and others in sheets having widths of 24-inches and more.

Abstract: A ceramic to metal joint particularly advantageous in a recuperator tube assembly, includes a ceramic tube and a spaced, circumferentially disposed metal sleeve. A bonding material is cast between the ceramic and metal members. A seal member has sufficient ductility within a predetermined thermal operating range to plastically deform and yet maintain an effective fluid seal between the ceramic and metal members. The present invention is particularly useful in the construction of a modular heat exchanger unit. Both individual tube assemblies and module units can be individually removed for cleaning, inspection, or replacement.

Abstract: Methods for manufacturing components having internal flow passages in which an insert composed of a carrier and passage-forming and/or flow controlling elements is sandwiched between or installed in elements of the component. The insert associated and component elements are then bonded together and the carrier subsequently leached away to complete the formation of the flow passages.

Abstract: Methods of and apparatus for removing contaminants from heated gases by impact separation. The contaminants are collected by adhering them to a moving surface, and they are thereafter removed from that surface.

Abstract: Methods of and apparatus for removing contaminants from heated gases by impact separation. The contaminants are collected by adhering them to a moving surface, and they are thereafter removed from that surface.

Abstract: Joints for limiting the stresses on non-ductile components and structures, and methods for fabricating such joints.

Abstract: Methods of forming metallic workpieces into ring-shaped components of selected cross-sectional configuration in which roll electrodes both heat the workpiece by electrical resistance and provide the pressure so that the workpiece becomes plastic and flows into the wanted configuration. Apparatus in which the method can be carried out, and tooling for controlling the configuration into which the workpiece is formed.

Abstract: Metal forming apparatus in which a workpiece is heated and subjected to pressure, causing the metal to become plastic and flow into a selected configuration.

Abstract: Metal forming methods in which a workpiece is heated and subjected to pressure, causing the metal to become plastic and flow into a selected configuration. Apparatus in which the method can be carried out and tooling for use in the methods and apparatus.

Abstract: Metal forming methods in which a workpiece is heated and subjected to pressure, causing the metal to become plastic and flow into a selected configuration. Apparatus in which the method can be carried out and tooling for use in the methods and apparatus.