Abstract: The invention provides an apparatus for selectively connecting a gas supply to a vessel employed to contain molten metal. Generally stated, the apparatus includes a sealer plate connected to an external portion of the vessel to receive the gas and direct it into a fluid conduit that is in fluid communication with a selected interior portion of the vessel. A seal holder disposed in approximate alignment with the sealer plate receives the gas from the gas supply and directs it toward the sealer plate. A spacing mechanism interposed between the seal holder and the sealer plate maintains a selected spaced distance therebetween and delimits the side walls of a substantially sealed gas conduit chamber when the sealer plate and the seal holder simultaneously contact opposite end portions of the side walls defined by the spacing means. The conduit chamber is thereby configured to conduct the gas directed from the seal holder toward and into the sealer plate.

Abstract: An apparatus and method is provided simultaneously to quench a tubular on the inside and outside surfaces during horizontal axial movement of the heated tubular into the apparatus. The apparatus comprises a generally cylindrical frame carrying two external and internal quench heads mounted 180.degree. apart on the cylindrical frame. The cylindrical frame is mounted for oscillatory motion about the axis of the frame through an angle of 180.degree.. A first heated tubular is delivered to the apparatus for simultaneous inside and outside quenching while the cylindrical frame is in a first position. Thereafter, the cylindrical frame and the first tubular is oscillated through 180.degree. to the second position where the first tubular may be withdrawn from the apparatus. In its second position, the second inside and outside quenching heads are in registry with the heating furnace so that a second tubular may be quenched while the first tubular is being withdrawn from the apparatus.

Abstract: A teeming ladle with at least one tapping hole (3) formed in the bottom of its body (1). According to the invention, a sleeve (4) is arranged around each tapping hole (3) substantially coaxially therewith. The sleeve (4) has one of its ends tightly connected with the ladle bottom and the other end immersed in the melt during casting. The diameter of the sleeve (4) is so many times larger than that of the tapping hole that after being immersed in the melt, a space is left in the sleeve interior filled with a gas medium under a pressure ranging from 0.02 to 1.0 time the pressure under which the melt is discharged from the ladle.

Abstract: A lead or lead alloy strip useful for lattice plates of batteries, which is characterized by having recrystallized structure, and a method and apparatus for continuous manufacturing of said alloy strips directly from molten lead or lead alloy advantageously.

Abstract: A nozzle assembly constituting a burner or blowing nozzle includes, in the region of the discharge opening thereof, a piston-like member which is displaceable by an actuating means into a position of blocking off the discharge opening thereby to prevent same from becoming clogged by slag or metal splashed thereon. When the assembly is mounted in the wall of a metallurgical furnace, the piston-like member may also be adapted to close off the opening in the wall, which communicates with the nozzle assembly, in order also to keep the wall opening open. At least a part of the piston-like member may be caused to oscillate or at least the part thereof which is towards the interior of the furnace may comprise or be coated with a scale-resistant material or may be coated with a material that is difficult to wet.

Abstract: A plunging capsule for introducing a highly volatile, vaporizable additive, such as pure magnesium, into a metal melt in a treatment vessel comprises a wall oriented vertically in an operating position of the capsule. The wall has an upper portion forming two-thirds of the wall and a lower portion forming one-third of the wall, and defines a chamber for the additive. At least one outlet opening is provided in the upper portion. At least one inlet opening is provided in the lower portion. The transverse cross-sectional area of the inlet opening is less than that of the outlet opening.

Abstract: A water-cooled lance is supported above the mouth of a steel-making vessel for vertical reciprocating movement and includes a slurry pipe which is rotatably positioned to spray repair material against the inner lining of the vessel, or to place a new lining on the interior of the vessel.

Abstract: A device for the separation of slag and its retention in a tapping converter which consists of a closure, sometimes referred to as a dart, arranged to be positioned, either manually or automatically, into the tap hole of the converter. The device may include configurations enabling it to seal the tap hole to prevent slag from entering the same or alternately indicate the level of the slag in the converter relative to the tap hole by restricting the tap hole and imparting a swirling motion to the molten metal and slag therein. The device may be formed of material having a specific gravity lower than that of the steel produced in the converter but higher than that of the slag or alternately having a specific gravity higher than that of the steel to facilitate manual placement of the device in the tap hole.

Abstract: In the thermal ageing of extruded sections of age-hardenable aluminum alloys the sections are progressed through a system having an initial low temperature zone and a subsequent high temperature zone. In order to secure uniform ageing the sections are progressed in a direction transverse to their length and conveniently are arranged in a single layer and spaced apart to ensure acceptably uniform rate of heating to ageing temperature.

Abstract: A porous nozzle for blowing gas through a bath of steel, comprises a body (1) of solid porous material, having on its upper face a bushing (2) for securing the body to the end of a blowing lance. The body is formed with a central cylindrical cavity (3) which is in communication with the interior of the bushing (2) for receiving an inert gas from the lance. A large mesh grill (4) which is embedded in the body, encloses the central cavity (3) so as to reinforce the porous material of the body (1). A metal ring (5) is secured about the bushing (2), and the grill (4) is welded to this metal ring (5). There is an anchoring member (6) welded to the periphery of the bushing (2) so as to fasten more securely the porous material constituting the body (1), this anchoring member being embedded in the porous material. The anchoring member (6) is cylindrical and lies outside of and is concentric with the grill (4 ).

Abstract: An article of manufacture comprising a steel substrate coated with an electroplated metallic double layer with good corrosion resistance after painting and wet adhesion of paint film; said article having on the steel substrate a first layer of electroplated Zn-Ni alloy containing 7-15 wt % of Ni and on the first layer and, on said first layer, a second electroplated layer of iron or Fe-Zn alloy containing more than 60% of Fe and less than 40% of Zn.

Abstract: The weld zone in Hastelloy X nickel superalloy is thermal mechanically worked by cold working the weld zone to reduce its thickness by about 5-40%, and by annealing at 1120.degree.-1175.degree. C. for one hour to cause recrystallization. Low cycle fatigue properties of laser and gas tungsten arc weld zones are substantially increased.

Abstract: A method of manufacturing stamped-out or forged parts made of high-resistance aluminum alloy, in particular those corresponding to the 2000, 6000 or 7000 series of the Aluminium Association.The method, which is applicable to automated, mass-production manufacture, entails quenching the products from the hot deformation heat (T'.sub.2) which occurs after reheating the blooms at the homogenization temperature (T.sub.1) or the solution heat treatment temperature (T.sub.3).The products obtained have uses which are analogous to those of products obtained in a classic manner.

Abstract: A composite brazing material is described, composed of a layer (usually an ingot) of high manganese content aluminum alloy (3000 series alloy; the "core") and a layer of high silicon content aluminum alloy (4000 series alloy; the "cladding") with a layer of aluminum alloy having the following composition:______________________________________ silicon 6.8-8.2 wgt. % iron up to 0.8 wgt. % copper up to 0.25 wgt. % manganese up to 0.10 wgt. % zinc up to 0.20 wgt. % other elements up to 0.15 wgt. % aluminum balance ______________________________________disposed between the cladding and core layers and in contact with both. Subsequent hot rolling of the multi-layer composite produces a good bond between the core and the cladding through the intermediate layer. The resulting brazing material has the external properties of a simple two-layer composite of core and cladding without the intermediate layer.

Abstract: A treating ladle for use in a foundry in the production of ductile iron is disclosed wherein the treating ladle has a removable bottom portion and a detachably connected ladle carrier. The ladle carrier includes a bail carrier adapted for connection to a hoist and a retaining ring pivotally connected to the bail carrier to support the treating ladle for a tipping motion for emptying the contents thereof. Corresponding tabs mounted on the bottom portion and the body of the treating ladle permit the individual pieces to be bolted together to facilitate a disassembly of the treating ladle when maintenance and/or repair is desired. The treating ladle is adapted for connection to a separately attachable tundish cover.

Abstract: The present invention pertains to steel articles having improved wear and friction properties and the method of producing these articles. A steel surface containing relatively high levels of nitrogen and having a surface film containing carbon is implanted with high energy ions. Overlapping layers enriched in carbon and nitrogen are formed beneath the surface and provide the steel with a surface that has improved wear and friction characteristics.

Abstract: A workpiece of a highly heat-resistant steel containing nickel or of a nickel-base alloy is provided with a hard coating containing titanium. An intermediate layer of an intermetallic phase Ni.sub.3 Ti intervenes between the core material and the hard coating. The deposition of the intermediate layer of the hard coating is achieved by means of separation in a gaseous phase.

Abstract: An apparatus is disclosed for incorporation in the normal refractory brick lining of a molten metal ladle through which apparatus gas can be introduced for stirring the molten metal. The device comprises a stirring block having a frustro-conical cavity therein and external configuration accommodating portions of the refractory lining of the ladle. A solid non-permeable refractory plug or the like of a frustro-conical shape is provided with a metal jacket spaced with respect to the exterior thereof to form an appropriate gas passageway and a spirally arranged continuous rib is formed on the exterior of the metal jacket for registry when rotated with a similarly shaped groove in the frustro-conical cavity in the stirring block.

Abstract: A process for the preparation of a rolled aluminum product, containing iron as the predominant alloy element, which has a grain size of less than 10 .mu.m after annealing to at least 250.degree. C., in which an alloy consisting of 0.8 to 1.5% iron, up to 0.5% by weight of each of Si and Mn, the sum of Si and Mn being between 0.2 and 0.8%, up to 0.3% by weight of any other component, the total of other components being no more than 0.8% by weight, and the remainder being aluminum, is casted at a solidification rate of 2.5 to 25 cm/min, the hot plate is cooled to less than 120.degree. C. at a rate of less than 0.5 K/sec and is then cold rolled with a thickness decrease of at least 75% without intermediate annealing, and the final annealing temperature does not exceed 380.degree. C.

Abstract: An electronic part composed of an alloy comprising, as a basic metal or metals, Cr and Zr with the total amount thereof being between 0.3 and 2.0% by weight (provided that the amount of Cr is 1.5% by weight or less and that of Zr is 1.0% by weight or less) and Cu as a balance, the surface of said part having been coated with Sn.The electronic part according to the present invention is excellent in the wetting property of a solder, weather resistance of a solder and bonding property to Au and Al.