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AssigneeCorus Aluminium Walzprodukte GmbH
InventorsPeter Conrad Hubert Ament, Nicolaas Dirk Adrianus Kooij, Christiaan Johannes Kooij, Anthony Stephan Verdier
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The invention relates to a process for forming a laminate comprising a core of a compressed metal powder mixed with a foaming agent between two metal layers, comprising the successive steps of providing two metal strips and a stock of powder comprising a metal powder mixed with a foaming agent; applying a layer of the powder between the two metal strips; feeding the metal strips, with the powder between them, to a rolling mill; rolling the two strips with the powder between them to form a laminate of compressed powder between two metal layers. The invention also relates to an associated device and to the product formed using the process.
Process for forming a laminate comprising a core of a compressed metal powder mixed with a foaming agent, in which the foaming agent used is titanium hydride TiH2) powder in a quantity of from 0.5 to 7% by weight of the metal powder, between two metal layers, comprising the successive steps of:
Process according to one of the preceding claims, in which the laminate of compressed powder between two metal layers is initially coiled after rolling.
Process according to one of the preceding claims, in which the metal powder used is an AlSi powder.
Process according to one of the preceding claims, in which from 1 to 2% by weight TiH2 is used.
Process according to one of the preceding claims, in which aluminium strips are used for one or both metal strips.
Process according to one of the preceding claims, in which aluminium strips and AlSi powder are used, the rolling being carried out at a temperature of the strips and the powder which lies in the range from 250 to 400° C., preferably in the range from 300 to 370° C., more preferably at 335°±20° C.
Device for forming a laminate comprising a compressed metal powder mixed with a foaming agent between two metal layers using the process according to one of the preceding claims, comprising a rolling device for rolling the two metal strips with the metal powder mixed with the foaming agent between them, a powder-deposition device being arranged upstream of the rolling device.
Dependencies are inferred from the claim text.