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: The minute pores and discontinuities which are normally present in protective oxide coatings on carbon bodies can be closed and, if desired, filled by immersing the coated carbon body in a metal salt melt having a boiling point above 400.degree. C., and electrodepositing the melt on the coated carbon body. When the electrodeposition step is continued sufficiently long to fill the pores, the product when cool is a coated carbon body carrying an oxidation agent-resistant coating which is keyed into the surface of the carbon.
Abstract: The present invention provides a highly efficient reduction cell hood which utilizes an improved shield installation which is easily movable by hand thereby allowing for fewer shields which results in a corresponding decrease in the number of joints which must be sealed. The reduction cell hood of the present invention is constructed of a material which is capable of withstanding the operating temperatures of the electrolyte process without warping, buckling or other damage thereto.
Abstract: Gallium and gadolinium are recovered and separated from scrap material of substances which contain both of these elements in the form of oxides or compounds which can be transformed to the oxides.The scrap is finely ground and then dissolved in a strong, aqueous mineral acid. The gadolinium is precipitated from the purified solution as the oxalate; then the gallium is deposited in the metallic form by means of electrolysis. The electrolytic deposition of the gallium can also take place before the gadolinium is precipitated out as the oxalate.
Abstract: The vertical magnetic force lines in electrolytic reduction cells, in particular in cells for the production of aluminum, are absorbed by a device comprising the steel pot shell and a covering which covers the upper part of the cell and is magnetically connected to the steel shell. The effect of this covering is uniform over the whole of the cell. The covering is made of a magnetic material which conducts well, and it can for example be in the form of a hood, frame or cross bars.
Abstract: An aluminum composite is provided having improved resistance to intergranular corrosion, especially a brazed aluminum composite. The composite comprises an aluminum base alloy core clad with a brazing alloy consisting essentially of from 4-14% silicon, from 0.01-2% of a material selected from the group consisting of indium, gallium and mixtures thereof, and the balance essentially aluminum. The additions to the brazing alloy reduce the tendency for the brazing alloy layer to induce intergranular corrosion of the core alloy layer. They also reduce the pitting rate of the brazing alloy layer.
Type:
Grant
Filed:
March 15, 1979
Date of Patent:
April 1, 1980
Assignee:
Swiss Aluminium Ltd.
Inventors:
Michael J. Pryor, James M. Popplewell, William H. Anthony
Abstract: Polished single crystal wafers are checked for defects by means of a method employing a optical microscope. The image is blurred by a translucent material and the transmitted light is then sensed by a light sensitive instrument which records the increased light intensity caused by a defect passing through the field of view. The position of the defects are then plotted automatically.
Abstract: An improvement in fault detection and stop motion systems in which an electronic circuit is capable of sensing and displaying any one of a number of malfunctions on each of a plurality of parallel operating members on a machine and interrupting operation thereof upon detection of any such malfunction.
Abstract: A wheel for pneumatic tires for use on motor vehicles having a ring-shaped rim around a central disc or dish wherein the rim is made of a composite section with a light metal body section and an insert of higher strength metal which forms part of the surface of the body section.
Abstract: An improved design for both fixed and operating type windows is disclosed in which the window is thermally broken without the use of an insulating material as a thermal break. The improved windows of the present invention are designed so as to enable both fixed and operating types to be secured to the same frame member thus allowing for easy and architecturally pleasing unit stacking.
Abstract: An improved apparatus for cooling heated metal items such as extrusion billets, and in particular billets of aluminum alloys is disclosed. The apparatus comprises a cooling chamber, means for transporting individual billets into and out of the cooling chamber, and inlet and outlet openings for the ingress and egress of a cooling medium from said chamber. A fan or the like is employed to produce a flow of air through the cooling chamber.
Abstract: The disclosure teaches a firmly joined composite applicable for joining objects of various shapes, including flat plates, curved plates, cylindrical objects, pipes and rods of circular and other than circular cross section. The joined composite is simple to prepare and can be made hermetically tight if desired.
Type:
Grant
Filed:
April 17, 1978
Date of Patent:
January 22, 1980
Assignee:
Swiss Aluminium Ltd.
Inventors:
Anatole M. Gurewitsch, Robert W. Weidemann
Abstract: A wear resistant coating for the working faces of disc-shaped machine parts made of aluminum or aluminum alloys is applied to the parts by thermal spraying. The coating comprises two components, one being aluminum oxide pure or mixed with another oxide and the other aluminum or an aluminum-silicon or aluminum-magnesium alloy. Such a coating, called a cermet, can be used advantageously on brake discs, clutch plates, and the like.
Abstract: The disclosure teaches an improved method and apparatus for the treatment of liquids with gases and especially for use in the degassing and filtration of molten metal, especially aluminum, using an apparatus which employs a swirling tank reactor. The swirling tank reactor is in the form of a substantially cylindrical chamber and is characterized by having a liquid inlet at the top thereof and at least one gas inlet at the bottom of said substantially cylindrical chamber wherein at least either the liquid inlet or the gas inlet is positioned with respect to the wall of the cylindrical chamber for tangentially introducing either liquid or gas such that the liquid swirlingly flows from said liquid inlet to a liquid outlet. In a preferred embodiment for the degassing and filtration of molten metal, a filter-type medium is positioned beneath said molten metal inlet to filter the molten metal prior to delivering the same to a casting station.
Abstract: An object is made out of aluminum or aluminum alloy in a form such as foil, sheet, containers and the like and has a 5 to 25 .mu.m thick oxide layer produced by anodic oxidation. This oxide layer exhibits a crack-free elongation of at least 0.65 parts per thousand in the non-sealed condition and the ratio of the crack-free elongation of the oxide in the non-sealed condition to that in the colored, non-sealed condition lies between 1:1.2 and 1:5.5. Such an object can then be colored by heat-transfer printing without producing hair-line cracks in the oxide layer, which would give the image so produced an unattractive appearance.
Abstract: The disclosure teaches an improved design for a swirling tank reactor for use in the degassing and filtration of molten metal. The swirling tank reactor has a larger first cylindrical section and a second smaller cylindrical or converging conical section located beneath said first cylindrical section. Conical shaped fluxing gas inlet nozzles are provided in the walls of both the first and second sections so as to maximize fluxing gas bubble dispersion.
Abstract: The disclosure teaches an improved method and apparatus for the treatment of liquids with gases and especially for use in the degassing and filtration of molten metal, especially aluminum, using an apparatus which employs a swirling tank reactor. The swirling tank reactor is in the form of a substantially cylindrical chamber and is characterized by having a liquid inlet at the top thereof and at least one gas inlet at the bottom of said substantially cylindrical chamber wherein at least either the liquid inlet or the gas inlet is positioned with respect to the wall of the cylidrical chamber for tangentially introducing either liquid or gas such that the liquid swirlingly flows from said liquid inlet to a liquid outlet. In a preferred embodiment for the degassing and filtration of molten metal, a filter-type medium is positioned beneath said molten metal inlet to filter the molten metal prior to delivering the same to a casting station.
Abstract: A process involving a static mixer for the continuous production of metal alloys is such that molten metal is passed through a filter bed of loose particulate material exposed to atmospheric pressure. The alloying addition is made to the metal via a proportioning and feed device as the metal enters the filter bed. As a result the alloy components are dissolved in the molten metal and, due to the repeated division and reuniting of the streams of charge in the bed, the alloying elements are mixed with the metal before leaving the mixing chamber. The degree of mixing can be changed by changing the size of particles in the granular bed.
Abstract: Method and apparatus for the preparation of hollow plastic articles wherein an improved injection blow molding process is obtained and improved temperature control of the parison is obtained by the use of a plurality of molds and cores. At least one temperature controlled mold and core is used to adjust the temperature of the parison. The temperature adjusted parison is then stretched and/or blown in at least one second mold by a second core, cooled therein and transferred by at least one third ejector core to additional finishing molds for further cooling or to removal means.
Abstract: Adjustable flexible sealing members for the peripheral edge of a floating deck are disclosed. At least two sealing members are attached to the peripheral edge of the floating deck in such a manner that both vertical and horizontal movement of the members may be adjusted from the surface of the floating deck. Such sealing members greatly reduce or eliminate the evaporative loss from volatile liquids protected by the floating deck in a storage tank.