Abstract: A molten metal pouring cup is provided communicating with a transfer means for transferring molten metal from the pouring cup to a casting station. Vent means is provided on the pouring cup at the interface between the pouring cup and the transfer means to permit release of entrapped gas downstream of the pouring cup.
Type:
Grant
Filed:
December 15, 1986
Date of Patent:
November 24, 1987
Assignee:
Swiss Aluminium Ltd.
Inventors:
Jerry W. Brockmeyer, Leonard S. Aubrey, James E. Dore, Clifford N. Soble
Abstract: A composite rapidly quenched alloy material comprises a matrix composed of a rapidly quenched alloy, such as an amorphous or crystalline alloy, or a mixture thereof, and particles of at least one second-phase substance dispersed in the matrix uniformly and three-dimensionally.
Abstract: High modulus turbine shafts are described as are the process parameters for producing these shafts. The shafts have a high modulus as a result of having high modulus <111> crystal texture in the axial direction. The shafts are produced from a nickel base material consisting largely of the compound Ni.sub.3 Si. Hot axisymmetric deformation followed by cold axisymmetric deformation produces an intense singular <111> texture and results in shaft material whose Young's modulus is at least 25% greater than that of the steel materials used in the prior art.
Abstract: A water-cooled lance for blowing oxygen or oxygen containing gas onto a metal melt, for example an iron melt, for afterburning reaction gases from the melt and transfering the heat of afterburning back to the melt comprises a center tube forming a gas supply duct surrounded by further tubes for cooling water. The center tube leads to a head having a plurality of oxygen-blowing nozzles. Each of the nozzles has a plurality of oxygen outlet openings. The outlet openings have their centers lying on two concentric circles and are arranged so that each opening produces an individual gas stream. The axes of the outlet openings are inclined to the longitudinal axis of the lance at angles such that, in a plane perpendicular to the longitudinal axis of the lance and at a distance Lh from the head, the gas streams extend over an annular area in the plane having an inside diameter Di and and outside diameter Da. Lh, Di and Da have the following relationships:Di:Lh is the range of from 0.15 to 0.
Abstract: Steel blackplate for surface treatment, having a soft temper degree of T-3 or less, and improved fluting resistance is produced by the combination of a chemical composition of 0.01% to 0.08% carbon, 0.015% or less phosphorus, without titanium and niobium; steelmaking without vacuum-degassing; a low slab-heating temperature of 1240.degree. C. or less; a coiling temperature of 620.degree. C. to 710.degree. C.; continuous annealing having a heat pattern to decrease the solute carbon and nitrogen; and skin-pass rolling.
Abstract: A spiral thermostatic coil is made from a four layer thermostatic metal comprising relatively thick intermediate LES and HES layers bonded to each other, a low expansion, corrosion-resistant, relatively thin metal layer bonded to the LES layer, and a high expansion, corrosion-resistant relatively thin metal layer bonded to the HES layer. The flexivity is reduced less than about 10% by the corrosion-resistant layers.
Abstract: A method of joining ceramics and metals to themselves and to one another is described using a brazing filler metal consisting essentially of 35 to 50 atomic percent copper, 15 to 50 atomic percent silver and 10 to 45 atomic percent titanium. This method produces strong joints that can withstand high service temperatures and oxidizing environments.
Type:
Grant
Filed:
December 30, 1985
Date of Patent:
October 6, 1987
Assignee:
The United States of America as represented by the Department of Energy
Abstract: A low temperature, lead-free, cadmium-free solder for joining metals, primarily copper tube or brass pipe and fittings. The solder composition, being free of lead and other known toxic metals, has a composition range of 0.5-4.0% antimony, 0.5-4.0% zinc, 0.1-3.0% silver, 0.1-2.0% copper and 86.8-98.8% tin, is especially adaptable for plumbing applications where solder joints are exposed to potable water.
Type:
Grant
Filed:
August 21, 1986
Date of Patent:
September 22, 1987
Assignee:
J. W. Harris Company
Inventors:
Richard E. Ballentine, Robert M. Henson
Abstract: A lance supporting device has a lance turntable rotatable within a plane and carrying a plurality of lance operation units each supporting a lance for inserting a gas and/or a powdered treating agent into a molten metal. Each lance operation unit has means for lifting/lowering, rotating and tilting the lance. The lance turntable carrying the plurality of lance operation units is disposed in the central hollow or cavity of a doughnut-shaped turntable which carries a plurality of vacuum degassing vessels.
Abstract: A metal melting furnace equipped with a preheating tower having a plurality of fork-shaped shelf-plates extending into the inside thereof, comprising a gas mixing chamber provided in the lower end portion of the tower, communicating with the upper portion of the melting furnace, a duct for circulating combustion exhaust gas from the top portion of the tower into the gas mixing chamber, a damper arranged in the duct for controlling the amount of the combustion exhaust gas circulated into the gas mixing chamber, and a plurality of nozzles connected to the duct and opening into the gas mixing chamber.
Abstract: A novel alloy is disclosed which is characterized by high resistance to wear and corrosion. The alloy consists essentially of 2 to 25% chromium, 5 to 30% molybdenum, 3 to 15% tungsten, 2 to 8% copper, 2 to 8% boron, and 0.2 to 2% carbon; the balance being incidental impurities and at least 30% of a metal selected from the group consisting of nickel, cobalt and combinations thereof, with the total of molybdenum and tungsten being at least 16%. The alloy is preferably in the form of a powder for thermal spraying, and coating produced thereby generally have an amorphous structure.
Type:
Grant
Filed:
November 5, 1985
Date of Patent:
September 8, 1987
Assignee:
Perkin-Elmer Corporation
Inventors:
Subramaniam Rangaswamy, John H. Harrington
Abstract: Superelastic dental Au-Cu-Zn alloys characterizing that it is in a range defined by point A (63 wt % Au, 11 wt % Cu, 26 wt % Zn), Point B (55 wt % Au, 17 wt % Cu, 28 wt % Zn), Point C (55 wt % Au, 18 wt % Cu, 27 wt % Zn), Point D (63 wt % Au, 14 Wt % Cu, 23 wt % Zn), Point E (65 wt % Au, 12 wt % Cu, 23 wt % Zn) and Point F (65 wt % Au, 11 wt % Cu, 24 wt % Zn), in the Au-Cu-Zn ternary diagram of FIG. 1.
Abstract: An apparatus for sealing the skirt of a converter waste gas recovery system is disclosed, which includes an annular flange that is mounted about the outside surface of the converter adjacent to its mouth at a point clear outside the reach of the molten slag and metal that might spill over the rim of the converter mouth during the process of blowing. An annular sealing band is provided at the lower peripheral portion of the skirt, which runs surrounding the mouth. The annular sealing band is divided into multiple arcuate segments of a whole bandage, each pivotally disposed on a horizontal pin and connected to a separate hydraulic cylinder through its axially movable piston rod. It is so designed that the segments of the annular sealing band are individually yet simultaneously swung about their respective pins by their hydraulic cylinders into abutting contact with the external periphery of the flange providing a tight leakproof seal.
Abstract: A solid non-permeable refractory plug of an inverted frusto-conical shape has a spaced metal jacket and is located in an inverted frusto-conical shaped cavity in a pocket block incorporated in the normal refractory lining of a ladle to provide a structure through which gas can be introduced into the molten metal in an unusually large annular stream. A tubular body member is attached to the smaller lower end of the refractory plug and metal jacket and extends downwardly through the refractory lining of the ladle and an opening in the bottom of the ladle to which it is secured by a fastener and through which gas is introduced into the ladle. The large annular stream of gas formed by the device results in an improved stirring action in the molten metal and displaces molten metal that would otherwise tend to flow into the device and close the gas passageway. The device is inserted into the pocket block by moving it downwardly through the ladle and the pocket block.
Abstract: A fritless copper conductor composition suitable for overprinting on copper consisting essentially of (a) 10-50% wt. finely divided copper particles, (b) 90-50% wt. coarse copper particles, (c) 0.2-2% wt. reducible heavy metal oxide, (d) 0-1.0% refractory metal and (e) 0-5.0% of a high surface area noble metal, all the particles being dispersed in an organic medium.
Abstract: An aluminum alloy support for a lithographic printing plate, suitable for an electrochemical roughening treatment and excellent in fatigue resistance, heat softening resistance and printability, is provided which comprises 0.05 to less than 1% by weight of Mn, at most 0.2% by weight of Si, at most 0.5% by weight of Fe and unavoidable amounts of impurities.
Type:
Grant
Filed:
April 26, 1985
Date of Patent:
August 11, 1987
Assignees:
Fuji Photo Film Co., Ltd., Sumitomo Light Metal Industries, Ltd., Skyaluminium Co., Ltd.
Abstract: A rapidly solidified magnesium based alloy contains finely dispersed magnesium intermetallic phases. The alloy has the form of a filament or a powder and is especially suited for consolidation into bulk shapes having superior mechanical properties and corrosion resistance.
Type:
Grant
Filed:
June 7, 1984
Date of Patent:
June 23, 1987
Assignee:
Allied Corporation
Inventors:
Santosh K. Das, Derek Raybould, Richard L. Bye, Jr., Chin-Fong Chang
Abstract: In order to obtain, in a hard alloy based on a nickel-chromium-boron-silicon alloy, particularly advantageous properties with regard to hardness and toughness, carbides of the elements vanadium, niobium, tantalum and/or chromium are added to the hard alloy.
Type:
Grant
Filed:
April 27, 1984
Date of Patent:
June 9, 1987
Assignee:
Herman C. Starck Berlin
Inventors:
Reinhold Lutz, Helgo Wendt, deceased, Helmut Meinhardt, Heinz Eschnauer, E. Lugscheider
Abstract: A low temperature, lead-free, cadmium-free solder for joining metals, primarily copper tube or brass pipe and fittings. The solder composition, being free of lead and other known toxic metals, has a composition range of 0.5-4.0% antimony, 0.5-4.0% zinc, 0.5-2.0% silver and 90.0-98.5% tin, is especially adaptable for plumbing applications where solder joints are exposed to potable water.
Abstract: Disclosed is a phosphated steel product and a method for producing the product. The method comprises passing at least one side of a steel strip through a molten bath of a metal selected from the group consisting of Zn-Al and Zn-Fe to form a first coating, electroplating a second coating consisting of essentially a pure metal selected from the group consisting of Mn, Fe and Ni onto the first coating and subjecting the exposed surface of the second coating to a phosphating treatment to form a phosphate coating on the second coating.
Type:
Grant
Filed:
July 3, 1985
Date of Patent:
June 2, 1987
Assignees:
Phenix Works, Cockerill-Sambre
Inventors:
Victor Polard, Jean Palmans, Michel DuBois, A. Weymeersch