Abstract: A device for the production of anodized aluminum or aluminum alloy foil including a strip of foil, an electrolyte bath with a plurality of cathodes therein and an entry point thereto, and an anode roll spaced from the entry point, wherein the effect of the cathodes is increased with increasing distance from the entry point.
Abstract: The present invention teaches a multi-stepped process for preparing high strength, improved formability, low earing strip stock which is especially suitable for the manufacture of deep drawn and ironed hollow bodies such as cans or the like. The process of the present invention is carried out in two distinct operations. The first operation comprises continuously casting an aluminum melt into strip form on a strip casting machine so as to produce a desired dendritic arm spacing, hot rolling the continuously cast strip at casting speed in a temperature range between 300.degree. C. and the non-equilibrium solidus temperature of the alloy with the total reduction in excess of 70% and finally coiling the hot strip and allowing it to cool in air to room temperature so as to produce a metal strip having properties favorable for subsequent cold rolling operations. The second operation comprises an improved cold rolling operation in which a brief heat treatment at 350.degree. C. to 500.degree. C.
Type:
Grant
Filed:
August 4, 1978
Date of Patent:
December 9, 1980
Assignee:
Swiss Aluminium Ltd.
Inventors:
Ivan Gyongyos, Kurt Buxmann, Martin Bolliger, Willi Kerth, Kurt Neufeld
Abstract: The process of the present invention resides in the production of an extremely pure basic aluminum-sodium carbonate of the dawsonite type. In the process of the present invention, aluminum hydroxide is reacted with an aqueous sodium bi-carbonate solution at a temperature between 160.degree. and 240.degree. C. and at a pressure of 5-50 atm. The reagents from an aqueous suspension which is stirred throughout the duration of the reaction and the temperature of the reaction is chosen in accordance with the length of crystalline fiber which is to be produced.
Abstract: The solution for sealing anodic oxidized aluminum or aluminum alloys comprises basically an aqueous solution containing an addition of 0.1 to 2.5 g/l, made up of Agar-Agar and gelatine. the optimum pH value for the solution lies between 5.5 and 6.0.The sealing is carried out at a temperature between 90.degree. C. and the boiling point of the solution.
Type:
Grant
Filed:
August 20, 1979
Date of Patent:
November 25, 1980
Assignee:
Swiss Aluminium Ltd.
Inventors:
Fritz Schneeberger, Walter Zweifel, Hermann Weber
Abstract: An improved method and apparatus for degassing molten metal is disclosed in which the molten metal is passed in countercurrent relationship with a fluxing gas which is introduced through a sparger plate provided with a plurality of orifices of controlled size and spacing so as to minimize fluxing gas bubble size while maximizing fluxing gas bubble density thereby optimizing the degassing of the molten metal.
Abstract: Apparatus for the preparation of hollow plastic articles wherein a more rapid operating cycle is obtained with less effect upon the temperature of the parison. The apparatus includes a first core, means for providing a parison thereon, a temperature controlled first mold engageable with said first core and parison, means for separating the first core from the first mold and parison contained therein, a second core in spaced relationship to the first core, means for transferring the parison to the second core, a blow mold in spaced relationship to said first mold for fully expanding the parison and means for transferring the second core and parison to the blow mold, wherein the blow mold is stationary and the second core with parison thereon is brought into alignment with the blow mold and is inserted therein.
Abstract: Process for the manufacture of coarse aluminum hydroxide, containing a maximum of 15 weight percent of the particles in a particle size under 45 micrometers, with a productivity that may be higher than 60 grams of precipitated Al.sub.2 O.sub.3.The process consists of a decomposition in two stages (an agglomeration phase and a growth phase); each stage proceeding within defined temperature ranges with seed material of different constitution. The first (fine) seed amount is added at the start of the decomposition in such an amount, that the ratio of the supersaturation of the aluminate liquor to the surface area of the seed hydroxide per liter of the aluminate liquor presented for decomposition exhibits a value of 7 to 25 grams per square meter. The process exhibits the advantage of the high productivity of the so-called European process and the advantage of the so-called American process by obtaining a coarse product hydroxide.
Abstract: The present invention discloses an improved apparatus for dispensing paste or the like from a collapsible tube. The apparatus comprises a case having an electric motor enclosed therein which, when actuated, moves a pair of rollers downwardly on both sides of the tube to thereby force paste therefrom. In the preferred embodiment of the present invention, the case is provided with a movable closure member at the bottom thereof which seals the exit nozzle of the toothpaste tube. A motor actuation switch is positioned with respect to the closure member so that the motor is automatically actuated when a toothbrush is positioned so as to move the closure member to uncover the outlet nozzle of the tube and at the same time cause the closure member to abut the switch.
Type:
Grant
Filed:
June 2, 1978
Date of Patent:
November 18, 1980
Inventors:
Louis J. Apuzzo, Jr., Frank Acquarulo, Jr.
Abstract: The present invention relates to an improved vehicle body construction which comprises a plurality of horizontal and vertical extending extruded sections joined together by means of connecting portions wherein said extruded metal sections and said connecting portions are provided with guiding elements which lie in a plane substantially perpendicular to the wheel axle of the vehicle body.
Abstract: Apparatus for the preparation of hollow plastic articles wherein a more rapid operating cycle is obtained with less effect upon the temperature of the parison. The apparatus includes a first core, means for providing a parison thereon, a temperature controlled first mold engageable with said first core and parison, means for separating the first core from the first mold and parison contained therein, a second core in spaced relationship to the first core, means for transferring the parison to the second core, a blow mold in spaced relationship to said first mold for fully expanding the parison and means for transferring the second core and parison to the blow mold, wherein the blow mold is stationary and the second core with parison thereon is brought into alignment with the blow mold and is inserted therein.
Abstract: A lubricant for metal strip, in particular metal strip made of aluminum or aluminum alloy, and used for packaging purposes, in particular for packaging foodstuffs. The lubricant contains the aluminum or magnesium salt of a saturated C.sub.11 to C.sub.19 monocarboxylic acid as its main constituent. The lubricant also contains a dispersing agent.
Abstract: Apparatus for the preparation of hollow plastic articles wherein a more rapid operating cycle is obtained with less effect upon the temperature of the parison. The apparatus includes a first core, means for providing a parison thereon, a temperature controlled first mold engageable with said first core and parison, means for separating the first core from the first mold and parison contained therein, a second core in spaced relationship to the first core, means for transferring the parison to the second core, a blow mold in spaced relationship to said first mold for fully expanding the parison and means for transferring the second core and parison to the blow mold, wherein the blow mold is stationary and the second core with parison thereon is brought into alignment with the blow mold and is inserted therein.
Abstract: An improved method for fabricating a ceramic sparger plate for use in the degassing of molten metal is disclosed in which a castable ceramic is poured into a mold which contains an array of vertically disposed strands which are removed subsequent to the ceramic curing and prior to firing of the ceramic thus leaving the desired pattern of holes through which the fluxing gas is introduced into the molten metal.
Type:
Grant
Filed:
April 25, 1979
Date of Patent:
September 30, 1980
Assignee:
Swiss Aluminium Ltd.
Inventors:
Jonathan A. Dantzig, Derek E. Tyler, Richard C. Milici
Abstract: An aluminum alloy of the AlCu type containing cadmium and manganese exhibits an optimum combination of strength, toughness and corrosion resistance. The alloy contains 4.0 to 5.0% copper, 0.1 to 0.2% cadmium and 0.2 to 1.0% manganese. The alloy is suitable for the production of high strength, tough and corrosion resistant extrusion products.
Type:
Grant
Filed:
April 27, 1979
Date of Patent:
September 23, 1980
Assignee:
Swiss Aluminium Ltd.
Inventors:
Jean-Claude Jaquet, Manfred Heckler, Heinrich Zoller
Abstract: This invention relates to a can for preserving foodstuffs and a process for its manufacture.The can which can be closed and sealed by means of conventional machines and sealing methods comprises a basically cylindrical can body of an aluminum-plastic composite which is joined permanently at one end directly to a can bottom and at the other end to a metal lid via a metal ring which is flanged to the said lid.The process of the invention comprises the combination of the following steps:(a) Affixing the bottom to the body made of an aluminum-plastic composite.(b) Affixing the metal ring to one end of the body by means of an adhesive and applying pressure and elevated temperature to produce welding or sealing.(c) Flanging a metal lid onto the metal ring affixed to the can.
Abstract: A process for the extrusion of tubes or similar hollow sections from a billet is disclosed within the billet is forced against a hollow extrusion die surrounding a mandrel and a mandrel support. A core passing through the extrusion billet moves in the direction of extrusion with the billet and is led through the mandrel into the space inside the resultant hollow section. The process of the present invention relieves the die of the high stresses which can otherwise lead to early failure of the die.
Abstract: The electric current leaving an electrolytic aluminum reduction cell leaves the long sides of the cell via cathode bars connected to at least four asymmetrical busbars which lead to the anode beam of the next cell. These busbars which lead the current off in opposite directions are arranged on both sides of the cell at various distances, whereby however, the distances of two diametrically positioned busbars from the central axis of the cell are equal.
Abstract: An extrusion press stem exhibits at least one channel which runs approximately parallel to the central axis and connects up with a shape giving die. Such a stem as used in the indirect extrusion of materials, in particular light metal billets, is made up of component parts which fit concentrically together and is held securely together by the joints at the end of each component.
Abstract: An improved lightweight, flame resistant composite panel is disclosed which is readily shaped at room temperature without the necessity of machining. The composite panel comprises a foamed rigid thermoplastic core sandwiched between a pair of metallic layers. The thermoplastic core contains inorganic fillers in powder form to add further flame resistant characteristics to the composite panel. The metallic layers are bonded to the core by means of a thin layer of adhesive which exhibits good strength at elevated temperatures.
Abstract: An apparatus for removing residue deposits on filtration elements is disclosed which significantly reduces the time necessary for cleaning the filters. This apparatus utilizes an improved arrangement of spray nozzles so as to effectively clean the filter leaf assemblies and the housing which encloses the filter leaves. The apparatus can incorporate semiautomatic and automatic control mechanisms to reduce or eliminate human error in the cleaning of the filters. The apparatus increases production time in the filtering process and thus increases the capacity of the filters.