Abstract: The invention relates to a process and apparatus for ridding the worn anode butts of electrolysis bath crusts which adhere to them.The apparatus essentially comprises a jack supporting a pneumatic drill equipped with a percussion tool. The jack is supported by a movable and orientatable arm.Application to the recovery of worn anodes from igneous electrolysis cells for the manufacture of aluminium.

Abstract: An improvement in casting machines in which the molten metal solidifies inside the groove of a wheel, consisting of replacing the steel band generally used for covering the groove by a double band. A first band of copper or of an alloy which is a good conductor of heat is used for dissipating heat but is not under any tension. The tension is provided by a steel band in two parts which bears on the sides of the copper band and keeps it in contact with the casting wheel. The invention applies in particular to the casting of blanks of charged aluminum alloys for the production of machine wire.

Abstract: Electrolytic coloring process for the surface of aluminum or aluminum alloy objects such as designed for the interior or exterior of buildings or even simpler objects such as ski poles, etc., characterized in that the object, without having been previously anodized, is directly subjected to the action of an alternating current at a voltage below the anodization voltage of the aluminum in an aqueous bath consisting of sulfuric acid and boric acid or only sulfamic acid, at least one salt of copper, tin, silver, nickel or gold; the resultant colored film is then coated with a colorless varnish.

Abstract: The invention relates to the manufacture of aluminum alloy blanks containing a large quantity of silicon and designed for extrusion by impact.It consists in applying the method of casting with oriented cooling in the main patent to a hypereutectic silicon aluminum alloy which has previously been refined with phosphorus.An even distribution of the remarkably fine primary silicon crystals is obtained in this way.The invention is particularly applicable to the manufacture of linings for heat engines made of aluminum alloys.

Abstract: A process is disclosed for facilitating extrusion or rolling of a solidified dendritic aluminum base alloy billit, or the like, by heating the billet to provide an inner liquid phase of below 25%, by weight, wherein the dendritic phase has started to develop into a primary solid globular phase without disturbing the solidified character of the billet, followed by working of the treated billet. The process enables a reduction in working pressure and results in improved mechanical properties of the product. Optionally, in the case of precipitation hardening aluminum base alloys, quenching of the workpiece is effected as it exits from the die or mill, followed by artificial or natural aging. In another embodiment, the composition of the alloy of the billet being treated contains an amount of hardening constituent whereby the composition of the globular solid phase of the product approximates the composition of the alloy per se.

Abstract: A new crucible for use in the thermal analysis of metal alloys and especially aluminum alloys into which a thermocouple may be placed into a metallic thin-walled sheath which is secured in and extends upwardly from the crucible base and is connected to recording apparatus. The crucible is formed of an extremely thin-walled metallic cylindrical envelope having a base and a cake of heat-insulating material resting inside the envelope on the base, the thermocouple sheath extending upwardly through said cake.

Abstract: Process for treating solutions from the Bayer process, enabling amounts of sodium carbonate and sodium oxalate or sodium salts of organic acids corresponding to the amounts of these compounds dissolved during the attack on a bauxite to be removed by means of a barium compound, and without consumption of the latter.

Abstract: This invention concerns production by extrusion of hollow cylindrical bodies starting with granulated alloys of aluminum containing silicon. It consists of preparing the composition of the alloy in a liquid form, producing granules by centrifugal pulverization or atomization, introducing the granulated material into an extrusion press to obtain the hollow profile by extrusion and extruding the granular material within to form a cylindrical body. This invention is applicable to form hollow bodies and particularly sleeves of motors of high content silicon aluminum alloy through which size and distribution of primary silicon is improved over traditional casting methods.

Abstract: The invention relates to the field of electrical conductors of aluminum-based alloys. The invention comprises subjecting a wire rod of Al-Mg-Si alloy to continuous quenching, tepid drawing and continuous artificial aging. The invention makes it possible to produce wires and cables for overhead lines with mechanical and electrical characteristics substantially exceeding present standards.

Abstract: An apparatus for producing a rolled product from a continuously cast blank provides a continuous casting in a groove in a wheel which groove is closed over part of its length by a metal ribbon and the length of closed groove is adjustable to obtain, for the product being produced, the optimum characteristics of the blank at emergence from the groove for a given wheel speed.

Abstract: Process and apparatus for casting liquid metal in an ingot mold consisting of opposed cooled casting surfaces, at least one of which is convex, and one of which consists of a series of joined shutters. A high pressure is applied to the metal moving between the two surfaces during the solidification of the metal.

Abstract: A process for brasquing cells for the fused electrolysis of alumina from the recovery of used brasques by treating the ground carbon-containing and refractory products of the base and walls by a known method with filtration of the insoluble constituents, distinguished by the fact that the base and lateral walls are covered by a heat-insulating bed formed by a mixture of carbon, NaF, CaF.sub.2, Al.sub.2 O.sub.3, Na.sub.2 SO.sub.4 and CaSO.sub.4, and by the fact that the cathode resting on the heat-insulating bed and containing the electrically conductive elements is formed from a brasque paste consisting of carbon, NaF, CaF.sub.2, AlF.sub.3, Na.sub.2 O and Al.sub.2 O.sub.3 associated with a binder which may be pitch.The qualities of the aluminum obtained from this cell are unchanged in relation to conventional processes.

Abstract: A compressor for a refrigerant gas wherein a rotor acts on a rocking plate to effect rocking thereof and reciprocation of pistons in cylinder bores to produce suction and exhaust strokes for refrigerant gas. A lubricant is contained in a sump in the compressor casing and it is atomized and mixed with refrigerant gas which leaks past the pistons. A duct is formed in the casing for conveying the mixture of refrigerant gas and lubricant from the casing under the action of the suction stroke of the pistons. The mixture is delivered at the inlet for refrigerant gas and the total mixture now flows to a separator where the lubricant is separated from the refrigerant gas. The refrigerant gas is then supplied into the cylinder bores during the suction stroke and the lubricant is delivered into a reservoir where it is forceably delivered back into the casing to the sump.

Abstract: The invention relates to products forged in aluminum based alloys with a very low hydrogen content. These products are endowed with an isotropic structure of equi-axial grains, which furnish mechanical features substantially equal in all directions and they have a particularly low critical hardening speed. They are obtained by heat treatment at a temperature slightly higher than the temperature of the solid state. They allow a substantial lightening of certain parts, particularly in aeronautic constructions and the application of hardening in boiling water or even in air without substantial reduction of the mechanical characteristics.

Abstract: A method of connecting electrical conductors and the connection obtained thereby wherein the extremity of a conductor is received within a sleeve which is in turn selectively inwardly deformed by lost punches which are initially aligned with the exterior of the sleeve and are driven inwardly to deform the aligned area of the sleeve into locking engagement with the flattened conductor, the punch itself locking within the sleeve.

Abstract: The invention relates to a process and an apparatus for collecting the fumes given off during the production of aluminium in an electrolysis cell with a continuous anode.In the process, the surface of the elecytrolysis bath is closed, on the one hand along the long sides of the cell, by a longitudinal panel which is applied in fluid-tight manner to the anode tube, leaving an air intake free at its base, and on the other hand along the short sides of the cell by a fixed hooding closed laterally by the longitudinal panel.The invention is applicable to cells for the igneous electrolysis of alumina comprising a continuous anode.

Abstract: Drawn and hemmed metal parts, such as vehicle body panels, are made from an aluminum based alloy containing 1.5-2.5% copper, 0.5-1.0% magnesium and 0.4-0.8% silicon and in addition may contain up to 0.2% chromium, 0.4% manganese, 0.2% titanium, 0.2% zirconium and 0.5% iron.

Abstract: The method of and apparatus for the production of bars or machine wire from alloys of aluminum or copper by continuous casting of the rough shape in a grooved casting wheel closed by a band or chain and the subsequent steps of rolling and scalping the rough shape in a series of successive operations.

Abstract: The invention relates to a method of heat treatment which is applied to forged aluminum alloys, whereby the mechanical characteristics and resistance against corrosion under tension are increased considerably. This method is characterized by heating prior to tempering, above the temperature of eutectic melting, while remaining below the temperature of the start of the melting at equilibrium. The liquid phase formed temporarily is resorbed progressively, while the formation of pores is avoided by a sufficiently low hydrogen content of the metal. The application of this procedure to several aluminum alloys made it possible to observe increases of the limit of elasticity and of the break load of the order of 7% and a non-rupture stress under tension in 30 days at least equal to 30 hb.

Abstract: A cooking vessel and method for its manufacture wherein the cooking vessel has a thick base and a lateral wall thinner than the base whose inner surface is generated by a straight line, except at its ends, with the vessel, including at the base of the lateral wall a large external collar whose outer surface is generally V-shaped with the lower arm of the V developing a conical surface joined to the base and the upper arm, by which it is connected to the lateral wall, being curved outwardly.