Abstract: The sodium content of aluminum melt is reduced efficiently to within acceptable limits by filtering the primary metal from the electrolytic cell through a loosely packed filter bed of granular material which in part comprises carbon. The treatment is carried out before alloy additions are made, and the temperature of the melt before entering the filter is higher than 780.degree. C.

Abstract: A method of manufacture of sheets, strips and foils with high mechanical strength, good deformability, and very little formation of ears, from age hardenable aluminum alloys of the Al-Si-Mg type by continuous casting or strip casting and hot and cold rolling, characterized in that an Al-Mg-Si-alloy is employed, which contains an insoluble excess of silicon at a temperature of 450.degree. to 550.degree. C. usual for homogenization annealing for this type of alloy, this excess remaining in defined finely dispersed form in the matrix, when the alloy is subjected to such a heat treatment; the alloy having preferably a composition corresponding to the area A-B-C-D-A of FIG. 1 of the accompanying drawings, where A=1% Si/0.6% Mg (weight percent), B=1.8% Si/0.6% Mg, C=1.8% Si/0.2% Mg and D=1.2% Si/0.2% Mg, with facultatively additions of a maximum of 0.3% each of chromium, manganese, zirconium and/or titanium.

Abstract: Submicron-sized oxide particles are produced in a process in which coarse particles are fed into a vaporizing zone of a plasma burner, where they sublimate and finer particles are produced in a cooling zone.

Abstract: A process for the manufacture of an Al/plastic laminate foil is described. The laminate comprises an aluminum foil with plastic foil stuck on to at least one of its sides whereby the plastic foils exhibits an elongation at fraction of 80-100% and the adhesive joining the components achieves a shear strength of at least 0.3 N/mm.sup.2. The plastic foils bear a greater part of the applied load when the laminate foil is stressed. The laminate foil is suitable for the manufacture of containers by deep drawing whereby no cracks or macropores form in the Al foil. The laminate effectively excludes light, water vapor and aromas from external sources and prevents the loss of aroma from the contents of such containers.

Abstract: A metal strip is used for elements in a regenerative heat exchanger employed for the exchange of latent and sensible heat from a warm outgoing air stream to a cold ingoing air stream. The strip is placed alternatingly in the form of flat and corrugated sheets to form flow channels for the warm and cold air. The metal strip, for example, an aluminum foil, is coated or laminated at least on one side with a paper-like hydrophillic material. The hydrophillic layer comprises a mixture of cellulose fibers and fibers with olefin hydrocarbons as basis. Furthermore, fungicides can be added to the mixture.

Abstract: A sleeve or collar for protecting the iron pin of an anode connecting rod set in the carbon anode block used in the electrolytic production of aluminum is made out of aluminum or aluminum alloy sheet. Parts of at least two facing sides of the rectangular or square shaped sleeve project inwards in such a manner that they clamp onto the iron anode pin.

Abstract: A process and electrolytic cell are described for the production of aluminum whereby the feeding of the cell with fresh alumina, including the breaking of the crust of solidified electrolyte, is carried out in at least one space running transverse to the longitudinal axis of the cell.

Abstract: An improved seat for use in a vehicle is disclosed in which the back portion and the sitting portion of the seat is comprised of a single unitary composite structure. The composite structure comprises a core layer of a high polymer organic material disposed between two metal sheets. A roughened plastic protective layer is disposed on one of the metal sheets thereby providing a relatively non-slick surface on which a passenger may sit.

Abstract: The invention concerns a device for the extrusion of hollow or semi-hollow sections which are made in particular of a light metal. The device has at least one mandrel head on a mandrel support projecting into a die opening, the mandrel head being a special insert-type mandrel which is held in place on the mandrel support by a connecting device.

Abstract: An improved corrosion resistant aluminum alloy for use in the manufacture of brazed assemblies having improved sag resistant properties is disclosed. The alloy consists essentially of an aluminum base alloy containing from 0.05 to 0.4% chromium, from 0.02 to 0.9% manganese, up to 0.2% iron, up to 0.1% silicon and the balance essentially aluminum.

Abstract: A particular aluminum base alloy system which utilizes gallium as an alloying element is described and is particularly useful as foil material in electrical capacitors. The addition of the small amount of gallium to the alloy system provides foil produced from the alloy with a significant increase in capacitance properties. A particular processing scheme for producing foil from this alloy system is also disclosed.

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.

Abstract: A device for extruding ingots, in particular for extruding light metal ingots through a shaping die placed downstream of the ingot, is provided with a scalping facility for removing an outer layer of the ingot immediately prior to extrusion. The said scalping facility is made up of a plurality of blades or similar scalping facilities which together form a scalping ring and can be moved radially with respect to the direction of extrusion, and can be released from the ingot.

Abstract: The disclosure teaches an improvement in the degassing and filtration of molten metal, especially aluminum, using an apparatus which employs a pair of sequentially placed, removable filter-type plates and at least one fluxing gas inlet positioned therebetween. The first of said filter-type plates is characterized by a plurality of holes which provide a preferential path through which the fluxing gas flows upwardly through the first of said filter plates in countercurrent contact with the melt. Said plate serves to break up said fluxing gas into a fine dispersion to assure its intimate and extensive contact with the melt. Dissolved gases and non-metallic inclusions are thereby abstracted and removed from said melt.

Abstract: Improved aluminum alloys are disclosed which are particularly useful as foil material in electrical capacitors. These alloys may contain either titanium in an aluminum base or a titanium and boron mixture in an aluminum base. The particular combination of titanium and boron presents a greater increase in capacitance in foil formed from this alloy than the increase in capacitance due to titanium or boron alone. Particular processing of such alloys is also disclosed.

Abstract: The invention relates to a method for preparing aluminum and aluminum alloy objects for plating which results in an article whch exhibits improved corrosion resistant characteristics. The process includes anodizing the aluminum object in an acid bath, placing the anodized object in contact with a chemical which impregnates and is absorbed by the oxidized crystalline surface and finally exposing the treated aluminum object to heat so that the impregnating chemical is pyrolyzed to form an electronically conductive oxide thereby permitting the plating process while preserving an anodic coating of high ionic resistance.

Abstract: A method of reshaping magnetically relatively weak ferrite particles of substantially arbitrary shape into substantially spherically-shaped globules including the steps of transporting the particles by a carrier gas stream within a conduit into the vicinity of a stream of warm gases, separating the particles from the carrier gas stream prior to contact with said warm gas stream, feeding the separated particles into the stream of warm gases, melting the particles therein, and subsequently allowing the particles to solidify into substantially spherically-shaped globules.

Abstract: A pneumatic device for unloading cargoes of particulate materials from ships' holds is described in which inside a length of pipe, which sucks the material out of the hold and is principally in the horizontal position, there is at least one fluidizing base which transports the material further and into a silo. The fluidizing or transporting base can be selected to match the requirements for efficient transportation of different kinds of particulate material.

Abstract: A crucible, especially for containing melts, has multi-layered walls with an inner core of heat resistant material. A continuous coating layer of temperature resistant material is supported on the core. The coating layer at least partially defines a reservoir for melts to be contained in the crucible, and is composed of material resistant to attack by hot melts.

Abstract: An improved special purpose window fur use in "drive-in" businesses such as restaurants, banks and the like is disclosed. The window reduces exterior art infiltration without interfering with the normal merchandise-money exchange between attendant and customer thereby significantly reducing the infiltration of carbon monoxide from the exterior of the building into the interior of the building.