Abstract: An improved method of and apparatus for striping hot steel slabs on the runout table of a continuous caster employs a torch support and drive mechanism adapted to support a scarfing torch for movement at a uniform rate across the surface of a slab maintained in a stationary position on the runout table. A radiation thermometer supported for movement with the torch is focused to continuously monitor the striping operation by detecting flashes or temperature increases resulting from reduction of alumina inclusions during the striping process and transmitting an electrical signal to a microprocessor which converts the signal to electrical impulses that are counted, recorded or otherwise utilized to evaluate the slab being striped. The microprocessor controls operation of the apparatus during the striping process to provide a more reliable evaluation of the slab.

Abstract: A system for sintering molds and for preparing cast products by the use of the thus preformed molds is provided. The system is particularly suited for the production of cast articles made of an alloy, such as magnesium alloys, which is susceptible to cracking unless the cast mass is slowly cooled at least across the solid solution forming temperature range. The system comprises a composite sintering-annealing furnace including a sintering furnace section and an annealing furnace section. The sintering and annealing furnace sections are juxtaposed to be adjacent with each other and separated by a partition wall through which a plurality of ventilation windows is formed for communicating both sections with each other. A plurality of atmospheric air inlet ports is provided through an external wall defining the annealing furnace section.

Abstract: A method is disclosed for increasing productivity when casting Vee configuration engine blocks in a given size, two-part refractory mold having a single parting plane.

Abstract: In a continuous casting process, molten metal is supplied into a generally open top horizontal mold having an inner wall maintained at a temperature which is higher than the solidification temperature of the molten metal, while the molten metal is maintained under generally zero pressure at the outlet opening of the mold. A dummy bar is drawn horizontally away from the outlet opening of the mold to cause the molten metal to be drawn out of the mold opening and undergo solidification at the surfaces thereof directly proximate to the outlet opening. The exposed surface of the molten metal in the mold is heated through the open mold top by a heater spaced out of contact with the molten metal surface.

Abstract: A tubing mill for roll forming a strip of metal into a fluted tube having alternating longitudinally extending high and low portions on its outside surface. The mill includes feed means for supplying a generally planar strip of metal and embossing means for forming the high and low portions on the surface of the strip to be formed into the outside surface of the tube. The mill also includes breakdown means for sequentially transversely bending the strip from its planar condition. The breakdown means includes roller means having a gripping surface for engaging the strip and having alternating high and low portions shaped to mate with those of the strip. Additionally, the mill includes closure means for bringing into abutment the lateral ends of the bent portions of the strip, and welding means for seam welding the ends together.

Abstract: An arrangement for attracting a fish and including a hollow bait fish-like body containing an internal hook, a float in fluid communication with the bait fish-like body via a hollow tube, and a concentrated scented fluid stored in the float and released into the bait fish-like body through the tube, the bait fish-like body having gills so that the scented fluid is discharged into the water to attract the fish.

Abstract: A method for fabricating metallurgical contacts is disclosed for making thermocompression bonds to a metallized ceramic substrate on which semiconductor chips are to be mounted and electrically contacted. The method comprises placing a nickel layer on the metallized portion of the substrate and then covering the nickel with an immersion layer of gold. The gold immersion layer is selectively removed from locations where thermocompression-bonded contacts are desired. Removal is accomplished by applying a chemical stripper. Heavy gold is electroplated on said locations and the assemblage is heat treated prior to placement of the thermocompression-bonded contacts.

Abstract: In a method of preparing a sand mold in which mold sand within a mold frame is squeezed from an upper side opposite to a lower side of the frame at which a pattern is embedded and also from said lower side, the squeezing from the lower side is made only after the squeezing from the upper side has been completed by about or more than 95% of a total squeezing stroke. The sand mold thus prepared comes to have a desired hardness particularly at casting surfaces thereof.

Abstract: A weed guard for incorporation within a fishing jig includes an elongated flexible plastic member having a generally rounded and substantially flattened head portion at one end thereof and a generally cylindrical portion at the opposite end thereof interconnected by a central neck portion. The flattened head has a central bore formed therein and extending perpendicular to the flattened surfaces thereof for allowing the flattened head to be passed over and around the barbed tip of the fishing jig and positioned proximate to the leadhead of the fishing jig. A conventional soft plasic skirt is thereafter installed on the fishing jig. The cylindrical end of the elongated plastic member terminates in a blunt end into which the barbed tip of the jig is engaged to prevent the hook from snagging weeds or other submerged debris. The central neck portion of the elongated plastic member is reduced in width to facilitate the bending of the elongated plastic member along the central neck portion.

Abstract: A welding device for building up metal for repair or construction of a metal bores, outside diameters and circular faces by laying down single or continuous metal weld beads in a pre-selected pattern; including a base member to receive a rotatable table with a drive is provided on the base to rotate the table at selected speeds. An elongated tubular spindle is provided to rotate with the table. Conduits for welding wire, welding current (power) and a shielding gas supply is provided to the spindle to supply gas, power and wire to the area adjacent the point of exit of the wire. The tip of the spindle serves as one electrode contactor in a welding process and the metal to be welded serves as the other.

Abstract: A method of producing sound metal castings, particularly of reactive metals, by striking an electrical arc in a gap defined by adjacent end faces of opposed elongate electrodes, wherein the electrodes are mounted for rotation about longitudinal axes that are parallel and offset with respect to each other, realizing substantially complete overlapping of the adjacent end faces during rotation of the electrodes to cause uniform depletion of same, and wherein the metal droplets derived at the gap are maintained in a fully molten condition until they have been cast into an adjacent mold.

Abstract: A composite metal article having a massive portion connected to a plate portion in a connecting plane is formed by die forging the massive portion between dies so as to produce a flash fin in this plane on the massive portion and welding the plate directly to the fin in this plane.

Abstract: A continuous mold for a continuous casting plant comprises inner walls made from copper and/or an alloy of copper and a wear resistant and abrasion resistant layer disposed on the copper and/or copper alloy on the inner exposed side of the mold. The layer covers at most two fifths of the total surface of a side wall and reaches from the output end of the mold up to about one third of the length of the mold at the center of the respect side of the mold. The wear resistant layer reaches in the area of the inner edges of the mold from the output end of the continuous mold to at least about the same level as the layer at the center of the respective side wall and up to the input end of the mold. The wear resistant layer can be provided as an open net like a grid or as a grate on the inner wall of the continuous mold with the surface areas in the open parts in between being formed by copper and/or a copper alloy.

Abstract: An apparatus and method for casting metal strip includes a moveable chill body having a quench surface thereon. A nozzle mechanism deposits a stream of molten metal onto a quenching region of the quench surface to form the strip, and a gas supply mechanism provides an initial gas mixture, which consists essentially of carbon monoxide and oxygen. An ignition mechanism ignites the initial gas mixture to create an exothermic reaction which provides a low density, reducing flame atmosphere at a depletion region located substantially adjacent to and upstream from the quenching region. A control mechanism controls the initial gas mixture to produce an adjusted reducing flame atmosphere at the depletion region in which the adjusted reducing flame has a burnt gas composition that includes substantially no free oxygen.

Abstract: A system is provided for limiting the parameters of the motion of a billet in a bow-type continuous casting plant. The stiffness of the billet is determined from values of the motion of the elements of the billet and/or from properties of the advancing billet as picked up by sensing elements. The determined values are compared with preset limiting values for parameters such as the maximum residual withdrawal time, the maximum still permissible stoppage time period and/or the permissible minimum withdrawal speed. If the limiting values are exceeded a signal is provided by a computing provision and fed to an alarm or is used to trigger a shut-off of the continuous casting process.

Abstract: A feed nozzle unit for a horizontal continuous casting process, the feed nozzle unit being disposed in coaxial relation between a tundish nozzle and a mold in a horizontal continuous casting device and including a fixing member of cylindrical form fixedly connected to the mold, the feed nozzle being fixed and connected in coaxial relation to the fixing member at a position inside a connecting side of the tundish nozzle, and the connecting refractory material being fitted in coaxial relation to the fixing member at a position adjacent a connecting side of the mold.

Abstract: A quick change guide ring for a bottom pour ingot mould system to effect positioning of a plurality of moulds relative to outlets in a sprue plate.

Abstract: A trolling diver includes a planing body with a ballast weight at the front. A mast is pivotally mounted to the center of the body for movement fore and aft between forward and aft positions for climbing and diving. A trip line extends from the front of the body, through a trip line guide on the mast, and to the rod line. The lure is connected by a leader to the body. A spring connects the aft end of the body to a point midway along the mast to bias the mast aft. The spring exerts minimal and substantial reset torques on the mast when in the forward and aft positions by having the spring force act through a short and long torque arms. The torque arm in the forward mast position is preferably adjustable.

Abstract: The invention involves a novel method for forming sine wave I-beams, and other sandwich structures having a curved core. The core pieces are flat prior to forming. The sandwich structure consists of two face pieces and two core pieces, wherein the core pieces are similar in shape to each other. The pieces are placed in a stack. Each core piece has two lip portions. The lip portions are extensions of the core pieces, and have a curved shape prior to forming that does not change during forming. The core pieces are joined to each other along one lip portion, and each core piece is joined to one face piece along the other lip portion. The shape of the curved core sheets and the shape of the lip portions determine the curvature of the formed core. The core pieces are unfolded and expanded in forming dies at elevated temperatures and pressures to form the desired structure.

Abstract: A casting decoring device to decore metal castings by vibration within an enclosure. The enclosure provides a dust and sound isolation of the casting from the environment with the casting held in an isolation fixture within. A time control circuit is provided to cycle the device according to the size and number of castings within to be treated.