Abstract: Components of the printing device are attached by a process employing thermo-compressive welding. The process results in a unitary, graded interface between the attached components and eliminates the need for applying thermal-cure adhesives to secure the components.

Abstract: A constant section gasket based on elastomer, plastic, or like material, the gasket comprising a constant section element that is extruded or molded in at least one material selected from elastomers, plastic, thermoplastic elastomers, and like materials. The gasket also includes a sole-piece for fixing on a support(s), in particular a metal part of car bodywork, with the sole-piece being fixed thereto by means of an induction heating machine.

Abstract: An electrical caulking method for a work made from a magnesium or a magnesium alloy wherein a caulking pin integrally projects from a body, wherein an electric caulking apparatus having two opposing electrodes is used. The work is held between the opposing electrodes so that one electrode contacts the caulking pin and the other electrode contacts the body while an electric current is applied between the electrodes and pressure is exerted therebetween, thereby caulking the caulking pin into a desired shape, and providing at least the one electrode that is brought into contact with the caulking pin of the work of a material having low thermal diffusivity and which is difficult to alloy with magnesium.

Abstract: In a roll with a roll shell or jacket which is rotatable about a support or beam, the inner side of the rotatable roll shell or jacket is heated by means of an induction coil which is operated at high frequency and provided, for example, at a support element. The heating is effected directly at the press or work nip or in the proximity thereof without substantial loss of energy and without the use of a thermo-sensitive hydraulic medium.

Abstract: A method for manufacturing an apex seal for a rotary piston engine comprising steps of preparing an apex seal blank made of ceramic material, and applying a high energy heating radiation to the sliding surface of the apex seal blank to form a roughened and porous structure on the surface portion of the apex seal blank. The high energy heating radiation is desirably applied to the apex seal blank under a non-oxidizing atmosphere so that an oxidization of the components of the ceramic material can be prevented.

Abstract: The disclosure relates to a method whereby complex shapes, not moldable in a single molding operation, are molded in plural parts, each part being of the same or different powdered metal composition or prealloy of the type disclosed. One or more of the parts preferably has bumps or dimples thereon for joining to another of the parts in the manner to be described. The other part can also have depressions for receiving the bumps to aid in alignment of the parts prior to processing.

Abstract: An aperture plate for an ink jet head is formed by micro electrical discharge machining one surface of the plate to form a dimple-like recess with a relatively wide flat base. An aperture is then formed through the plate in the region of the dimple, as by micro electrical discharge machining. In one method of the invention, recesses are formed in two plates which are then mounted to the body of an ink jet head. A third plate with a formed third aperture is then mounted to the body such that the first, second and third plates overly one another and the third aperture is aligned with the recesses. Apertures of a smaller cross-section than the third aperture are then formed in the first two plates by drilling through the third aperture. The aperture through the first plate is then enlarged.

Abstract: A method is provided for manufacturing a heat shield for an exhaust system component. The exhaust system component preferably is of tubular nonlinear configuration. The heat shield is formed from a larger pipe having an internal diameter greater than the outer diameter of the exhaust system component. Appropriately dimensioned inwardly directed supports are formed in the larger pipe. The larger pipe then is bent into a nonlinear configuration substantially identical to the configuration of the exhaust system component. The outer pipe then is cut longitudinally in half along its entire length to define a unitary nonlinear heat shield which can be mounted to the exhaust system component. A portion of the remaining half of the larger pipe can be reattached to the heat shield to provide an air gap pipe along a portion of the length of the exhaust system component.

Abstract: A process and an apparatus for forming an air gap pipe are provided. Inner and outer pipes are bent or deformed into comparable configurations such that the inner pipe can be mounted within the outer pipe. The outer pipe then is split longitudinally by a preprogrammed cutting apparatus. The cutting of the outer pipe terminates just short of the complete longitudinal length of the pipe to facilitate rematching later in the process. The cutter includes a follower to trace the actual configuration of the pipe and thereby to offset differences from one pipe to the next. An array of clamps are provided to align the outer pipe halves relative to one another and to facilitate the reattachment.

Abstract: Blades in the steam path of a steam turbine diaphragm are assembled into slots in full circular bands and are structurally bonded thereto by welding. After stress relief, the bands are each separated into two 180 degree pieces by line cuts which pass between adjacent blades. The bands are then welded to semicircular rings having planar mating surfaces. The welding of the rings to the bands is performed with minimum welding without concern for whether the welds enter the interface sufficiently far to contact the blades themselves.

Abstract: A process for manufacturing a piston ring is disclosed wherein web-like first metal member which will form a base of a piston ring and web-like second metal member which will form a wear resistant layer of the piston ring are separately fed and joined together. The joined web is subject to curving to gradually decrease a radius of curvature.

Abstract: A spinneret pack comprising a filtration assembly and an outer ring surrounding the spinneret plate, when it is clogged with unprocessed plastic material, is preheated by induction heating to separate the outer ring by slight pressure in a first processing step, then a second induction heating treatment separates the spinneret plate from the attached filtration assembly. The spinneret plate, detached by gravity, has matter in the die holes carbonized by the second induction heating process, thereby simplifying a final cleaning process which will make the spinneret plate reusable in the synthetic fiber manufacturing process.

Abstract: An industrial process and system are described for forming finished parts from powder metal. Known steps of compacting the metal powder into a preliminary part having an intermediate shape, followed by heating and forming the preliminary powder into a finished part having a final shape and density are integrated into a single automated process and system by steps and equipment which provide for a rearranging of a continuous flow of preliminary parts into separate batches at a sintering station so that the separate batches of the preliminary parts can be uniformly heated to a selected sintering temperature level. After sintering, the separate batches are removed from the sintering station and rearranged back into a flow of parts which can be conveyed to a final forming station. This arrangement provides for advantages in starting up and stopping the system in a typical industrial application.