Hydro Aluminium

Oslo, Norway

Hydro Aluminium

Oslo, Norway
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Patent
Hydro Aluminium | Date: 2017-04-05

The invention relates to a method for burning in a coating of an aluminium or an aluminium alloy printing plate support, in the case of which the printing plate is heated to a burning in temperature, maintained at this temperature for a predefined duration and subsequently cooled. Deformations can be minimised even further after the burning in process if at least in a temperature range between 150 C. and the burning in temperature, preferably 100 C. and the burning in temperature, the temperature differences of the metal temperature of the printing plate measured along a line in the longitudinal direction of the printing plate during the heating and cooling are maximum 40 C. over a length of 40 cm and the temperature differences of the metal temperature of the printing plate measured along a line perpendicular to the longitudinal direction are less than 10 C. during the heating and cooling.


Patent
Hydro Aluminium | Date: 2015-02-09

The invention relates to an aluminium alloy, the use of an aluminium alloy strip or sheet and a method for producing an aluminium alloy strip or sheet. An aluminium alloy which has only a slight tendency towards intercrystalline corrosion and which at the same time provides high levels of strength and good deformability and which contains standard alloy components so that the recycling of the aluminium alloy is simplified is provided herein.


The invention relates to a method for processing an aluminium strip (20, 30) for lithographic printing plate carriers having the following steps: provision of an aluminium strip (20, 30) for lithographic printing plate carriers and single-sided coating of the aluminium strip with a protective layer (26, 36), wherein the aluminium strip (20, 30) is coated with the protective layer (26, 36) in the non-granulated and/or non-anodized state. Furthermore, the invention relates to an aluminium strip (20, 30) for lithographic printing plate carriers, wherein the aluminium strip (20, 30) has a single-sided protective layer (26, 36) and is in the non-granulated and/or non-anodized state.


The invention relates to a station (100) for transferring a metal melt (6) from a melting furnace (200) into a transport crucible (300), comprising a docking chamber (130), which has a docking opening (132) and is designed to be docked to a filling opening (302) of a transport crucible (300) by means of the docking opening (132), a suctioning device (150), which is designed to suction a gas from the docking chamber (130) and/or from a transport crucible (300) docked to the docking chamber (130), and a suction pipe (170), which has a suction channel (176) extending between an inlet opening (172) and an outlet opening (174), wherein the inlet opening (172) is arranged outside the docking chamber (130) and the outlet opening (174) is arranged in such a way that a metal melt (6) flowing through the suction channel (176) and exiting from the outlet opening (174) passes through the docking opening (132). The invention further relates to an assembly (4), comprising such a station (100) and a melting furnace (200), to a system (2), comprising such an assembly (4) and a transport crucible (300), and to a method for transferring a metal melt from a melting furnace (200) into a transport crucible (300).


The invention relates to the use of an aluminium alloy for an aluminium-plastic composite part or for the production thereof, wherein the aluminium alloy has the following composition: Si: 0.05 - 0.35 wt.%, Fe: 1.3 - 1.75 wt.%, Cu: 0.02 wt.%, Mn: 0.015 - 0.035 wt.%, Mg: 0.003 wt.%, Cr: 0.03 wt.%, Ni: 0.02 wt.%, Zn: 0.03 wt.%, Ti: 0.03 wt.%, contaminants individually up to 0.05 wt.%, in total up to 0.15 wt.%, the remainder being aluminium. The invention further relates to the use of an aluminium sheet product made from an alloy of this type for an aluminium-plastic composite part or the manufacture thereof. Finally, the invention also relates to an alloy of this type and to an aluminium sheet product made from an alloy of this type.


The invention relates to a station for transferring a metal melt from a melting furnace into a transport crucible. The station includes a docking chamber, which has a docking opening and is designed to be docked to a filling opening of the transport crucible a suctioning device, which is designed to suction a gas from the docking chamber or from the transport crucible docked to the docking chamber, and a suction pipe, which has a suction channel extending between an inlet opening and an outlet opening. The inlet opening is arranged outside the docking chamber and the outlet opening is arranged in such a way that a metal melt flowing through the suction channel and exiting from the outlet opening passes through the docking opening.


The invention relates to the use of an aluminium alloy for an aluminium-plastic composite part or for the production thereof, wherein the aluminium alloy has the following composition: Si: 0.05-0.35 wt. %, Fe: 1.3-1.75 wt. %, Cu:0.02 wt. %, Mn: 0.015-0.035 wt. %, Mg:0.003 wt. %, Cr:0.03 wt. %, Ni:0.02 wt. %, Zn:0.03 wt. %, Ti:0.03 wt. %, contaminants individually up to 0.05 wt. %, in total up to 0.15 wt. %, the remainder being aluminium. The invention further relates to the use of an aluminium sheet product made from an alloy of this type for an aluminium-plastic composite part or the manufacture thereof. Finally, the invention also relates to an alloy of this type and to an aluminium sheet product made from an alloy of this type.


The Raw Materials Initiative of the European Union (EU), which aims to "boost overall resource efficiency and promote recycling to reduce the EU's consumption of primary raw materials and decrease the relative import dependence", is currently implemented on the national and industry levels. This paper discusses the interpretation of the different indicators used to evaluate the resource efficiency of materials using the example of aluminium. Aluminium is used mainly in long-life applications, like building, transport and engineering, with only packaging materials having a short lifespan. One inventory in use states that about 700 Mt has been accumulated, accounting for 75% of the primary metal ever produced. This metal stock is the future source of raw material and energy in which we have invested. In 2010 about 50 Mt of aluminium entered the use phase as finished products. In the same year 11 Mt of end-of-life scrap was collected for recycling. In other words, less than a quarter of the current aluminium demand is covered by scrap from used products. It becomes problematical if this statistical indicator is used as a criterion for recycling performance. The recycled content of aluminium products is not low because of inefficient recycling but because of increasing demand for long-life products, driven by the need for the unique metallic properties of the lightweight metal. Consequently, growth in demand and an increasing lifespan determine the share of recycled metal in the global production of aluminium. Additionally, trade in scrap and products influence the regional results. © 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.


An aluminium alloy for the manufacture of semi-finished products or components of motor vehicles, a method for the manufacture of a strip made of an aluminium alloy according to the invention, a corresponding aluminium alloy strip or sheet as well as a structural component of a motor vehicle consisting of an aluminium alloy sheet which includes the following alloy components in % by weight: 0.6%Si0.9%, 0.6%Fe1.0%, Cu0.1%, 0.6%Mn0.9%, 0.5%Mg0.8%, Cr0.05%, the remainder Al and impurities, individually up to a maximum of 0.05% by weight, in total up to a maximum of 0.15% by weight.


Patent
Hydro Aluminium | Date: 2016-06-09

Use of an aluminium composite material in a thermal joining method, said material consisting of at least one aluminium core alloy and at least one external brazing layer consisting of an aluminium brazing alloy provided on one or both sides of the aluminium core alloy, wherein the aluminium brazing layer has a pickled surface. Reduced costs and a lower environmental impact is achieved by using an aluminium composite material in which the pickled surface of the aluminium brazing layer had been pickled by pickling with an acid, aqueous pickling solution containing at least one mineral acid and at least one complex-forming agent or a complexing mineral acid, wherein the removal of material in the pickling is between 0.05 g/m^(2 )and 6 g/m^(2), the aluminium composite material is used in a flux-free, thermal joining method, and the joining method is carried out in the presence of a protective gas.

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