Abstract: Provided is a method for producing an aluminium alloy strip from a non-precipitation-hardenable aluminium alloy having the following alloying constituents in wt %: 3.6%?Mg?6%, Si?0.4%, Fe?0.5%, Cu?0.15%, 0.1%?Mn?0.4%, Cr?0.05%, Zn?0.20%, Ti?0.20%, with the remainder Al and unavoidable impurities, individually at most 0.05 wt %, in total at most 0.15 wt %. In the method, a rolling ingot is cast. The rolling ingot is homogenised and then hot rolled into a hot strip. Then, the strip is cold rolled before a last intermediate annealing. The intermediate annealing is carried out to produce a recrystallised microstructure. The intermediate-annealed aluminium alloy strip is cold rolled to a final thickness, and the aluminium alloy strip is reverse annealed in the coil to a final thickness.

Abstract: The invention relates to an aluminum alloy strip with improved surface optics, which is fabricated via hot and/or cold rolling, and consists of a type AA 3xxx, AA 5xxx, AA 6xxx or AA 8xxx aluminum alloy. The object of proposing an aluminum alloy strip that is suitable for attractive and precious surface optics despite the elevated percentage of alloy constituents is achieved in that, after degreasing, the finish-rolled aluminum alloy strip exhibits an increase in the luminance value L*(?L) in relation to the rolled-greasy state of more than 5 while measuring the color of the surface in the CIE L*a*b* color space using a standard illuminant D65 and a normal observation angle of 10°, excluding direct reflection in 45°/0° geometry.

Abstract: The invention relates to a strip or sheet consisting of an aluminium alloy having a unilateral or bilateral surface structure prepared for a forming process, in particular it relates to a strip or sheet for formed motor vehicle components. The object of providing an aluminium alloy strip or sheet having a surface structure prepared for a forming process, which is easy to produce and has improved tribological characteristics in respect of a subsequent forming process, is achieved for a strip or sheet consisting of an aluminium alloy in that the strip or sheet has on one side or on both sides a surface with depressions as lubricant pockets which are produced using an electrochemical graining process.

Abstract: The object of providing a method for conditioning a working roll with which the material properties of a working roll can be set in a process-reliable and uniform manner is achieved by a method in which a roll and at least one pressure tool are rotated relative to each other, in which pressure is applied locally to the roll by means of the at least one pressure tool, comprising at least one pressure element, via the at least one pressure element, and in which a deep rolling process is carried out.

Abstract: The invention relates to a method and a device for quantitive determination of a number and size of particulate components contained in a medium flowing along a flow channel. Ultrasonic waves are coupled into the flowing medium, which are reflected at least partially by the particulate components and reflected ultrasonic wave portions which are detected in a ultrasonic time signals, on which the quantitive determination is based. Amplitude values associated with the individual ultrasonic time signals, are detected which are each greater than an amplitude threshold value established for each ultrasonic time signal: The detected amplitude values are assigned to values describing the size and the number of the particulate components.

Abstract: A method for cleaning rollers used for metal strip processing. According to said method, the roller surface is cleaned by an aqueous alkali metal hydroxide or alkaline earth metal hydroxide washing liquid or an acidic washing liquid, the washing liquid is removed and the roller surface is dried. A machine for cleaning rollers includes a washing frame designed for positioning a roller to be cleaned, and at least one means for applying at least one washing solution to the roller surface of the roller to be cleaned.

Abstract: The invention relates to a strip consisting of an aluminium alloy for providing adhesive connections. In addition, the invention relates to a method for producing a strip having a one or two-sided surface structure which consists of an aluminium alloy, at least provided in certain areas and prepared for an adhesive connection, and also relates to a corresponding adhesive connection. The object of providing an aluminium alloy strip optimised for adhesive connections, which has optimised surface properties for ageing-resistant adhesive connections, on the one hand, and which can be cost-effectively produced in a way which is reliable in terms of the process, on the other hand, is achieved for a strip consisting of an aluminium alloy for providing adhesive connections by the strip at least in areas having a surface structure prepared for adhesive connections, wherein the surface structure has depressions which were produced using an electrochemical graining process.

Abstract: An aluminium alloy for superplastic aluminium flat products having the following composition: Si?0.4 wt. %, Fe?0.4 wt. %, Cu?0.1 wt. %, 0.5 wt. %?Mn?1.0 wt. %, 4.7 wt. %?Mg?5.5 wt. %, 0.05 wt. %?Cr?0.25 wt. %, Zn?0.25 wt. %, Ti?0.20 wt. %, Na?2 ppm, unavoidable impurities individually ?0.05 wt. %, in total ?0.15 wt. %, remainder aluminium. A method for producing an aluminium flat product in which an aluminium melt is provided from the above-mentioned aluminium alloy, in which the aluminium melt is cast to form an ingot, in which the ingot is hot rolled to form a hot strip, in which the hot strip is cold rolled to form a cold strip, and in which the cold strip is levelled. Further disclosed is an aluminium flat product produced by the method and a use thereof.

Abstract: 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.

Abstract: In a method for cleaning a non-machined aluminum alloy product involving alkaline degreasing and treatment thereof after alkaline pickling with an acidic solution, the aluminum alloy product undergoes (a) initial acid cleaning before alkaline degreasing or (b) alkaline degreasing, followed by a subsequent acid rinse, alkaline treatment anew and an additional acid rinse thereafter. The aluminum alloy product may be a rolled aluminum alloy strip, a rolled aluminum alloy sheet and an aluminum alloy profile.

Abstract: 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/m2 and 6 g/m2, 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.

Abstract: Provided is a method for rolling a strip with a roll stand with at least two work rolls. A rolling gap with a pass line is defined between the work rolls. A control roll is arranged before the rolling gap of the work rolls in the rolling direction, the strip is guided into the rolling gap of the roll stand via the control roll at an entry angle relative to the pass line and the surface structure of the strip is controlled through the selection of the entry angle depending on the positioning of the control roll relative to the pass line. Also provided is an apparatus for rolling a strip with a roll stand having at least two work rolls. A rolling gap with a pass line is defined between the work rolls.

Abstract: Disclosed is a method for the recovery of filtering agents and rolling oil from a mixture containing used rolling oil and filtering agents coated with used rolling oil in which the mixture containing rolling oil and filtering agents is subjected to vacuum distillation under agitation in a reactor equipped with an agitator and vapour precipitator. The vacuum during distillation is regulated with an inert gas flow, the rolling oil is condensed and collected, and a rolling oil which can be reused for rolling and a powder filtering agent which can be reused are obtained.

Abstract: Provided is a method for production of an aluminium strip for lithographic printing plate supports from an aluminium alloy including (in wt %): 0.05%?Si?0.25%, 0.2%?Fe?1%, Cu max. 400 ppm, Mn?0.30%, 0.10%?Mg?0.50%, Cr?100 ppm, Zn?500 ppm, Ti<0.030%, the remainder aluminium and unavoidable impurities individually at most 0.03%, in total at most 0.15%. In the method, a rolling ingot is cast from an aluminium alloy, and the rolling ingot is homogenised. Further, the rolling ingot is hot rolled to a hot strip final thickness, and the hot strip is cold rolled to final thickness of between 0.1 mm and 0.5 mm. The product of the relative final thicknesses of the aluminium strip after the first and after the second cold rolling pass of the aluminium strip is 15% to 24%.

Abstract: The invention relates to a device for changing the temperature of a metal strip including means for changing the temperature of the metal strip by heating or cooling. By using means for conveying the metal strip, the metal strip is moved in the strip direction relative to the means for changing the temperature of the metal strip. The object of providing a device for changing the temperature of metal strips, which allows improved process control and improved flatness of the treated metal strip, is achieved according to the invention by a device in that means for changing the temperature of the metal strip include a plurality of individual temperature-control means which each heat or cool the metal strip only in some regions, and at least the position of a plurality of the temperature-control means can be individually changed translationally and/or rotationally relative to the metal strip.

Abstract: The invention relates to a brazable three-layered aluminium composite material having at least three layers with at least two different aluminium alloys, whereby an inner layer of the at least three layers is an aluminium brazing layer made from an aluminium brazing alloy, the other layers are configured as covering layers and include at least one further aluminium alloy, wherein the at least one further aluminium alloy has a higher solidus temperature than the liquidus temperature of the aluminium brazing alloy. The individual covering layers have a thickness which exceeds the thickness of the aluminium brazing layer by at least a factor of 1.5, preferably by a factor of 5. The brazable aluminium composite material is simply structured, has good brazing properties for the production of butt-joint brazing connections, significantly reduces the risk of a ‘burning through’ of brazed-on components and provides sufficient mechanical properties.

Abstract: A method for the continuous casting of metal strands. The liquid metal is simultaneously cast via a moulds into metal strands. The moulds each have a narrow side and a broad side. The moulds have a uniform narrow side so that the metal strands have equal thicknesses after casting. At least one of the moulds used has a broad side whose length differs from the length of the broad side of the other simultaneously used moulds. For each mould used, a sprue stone is provided, which is arranged on a casting table and is provided for receiving the starter strands. The casting of the metal strands includes a mould filling phase with a fixed casting table in which a plurality of starter strands is cast into the associated sprue stones. The casting includes a continuous casting phase in which the casting table is lowered and metal strands are cast.

Abstract: The invention relates to an aluminium alloy strip composed of an AA 5xxx-type aluminium alloy containing at least 4 wt. % of Mg in addition to Al and inevitable impurities. The object of the invention of proposing an aluminium alloy strip in an AlMg aluminium alloy strip which is resistant to intercrystalline corrosion despite having high strength and an Mg content of at least 4 wt. %, is achieved according to a first teaching of the present invention by an aluminium alloy strip that has a recrystallized microstructure, the grain size (GS) of which in ?m has the following relation to the Mg content (c_Mg) in wt. % : GS?22+2*c_Mg, and wherein the aluminium alloy of the aluminium alloy strip has the composition described herein.

Abstract: A method for recycling metal scraps, particularly aluminum scraps, is provided. In the method, an amount of metal scrap, particularly aluminum scrap, is provided in the form of a plurality of separated split lots. A composition analysis is carried out for each split lot and an item of composition information based on said composition analysis is associated with each split lot that has been analyzed. Also provided is a device configured for carrying out said method.

Abstract: A system (1) for analyzing and sorting material (2) including a feeder (10) for transporting at least one piece of material along a feeding surface (15) towards and onto an upper portion (21) of a chute (20), a sorting device (50), a laser device (30), a spectrometer (40) configured to detect an emission from the piece of material and to produce an output signal corresponding to the emission, and a controller device configured to receive the output signal and to operate the sorting device. The laser device and the spectrometer are both provided on a level below the feeding surface. Also, the laser device is configured to produce a laser beam that can be incident on the piece of material when the piece of material is at least partially protruding from the chute or has fallen off from the chute via the lower edge of the chute and is airborne.