Method for making integrated circuit aluminium panels

Details Method for making integrated circuit aluminium panels Method for making integrated circuit aluminium panels

B - Operations, Transporting

21

D

B21D 53/04 (2006.01)

Patent

CA 2431307

The invention concerns a method for making one side flat aluminium integrated circuit panels which consists in preparing the surface of two sheets made of aluminium alloy, depositing on one of the sheets an anti-weld ink in reserved zones corresponding to the circuit design, roll-bonding the sheets one on the other, and expanding the channels corresponding to the non-welded zones with a pressurised fluid, wherein one of the sheets is made of series 1000 alloy and the other made of an alloy of iron and manganese and such that Fe + Mn > 0.8 wt. %, and preferably > 1, even 1.5 %. The iron and manganese alloy is preferably obtained by continuous casting of strips between two cooled rolls. The invention also concerns a continuous method for making aluminium alloy integrated circuit panels.

L'invention a pour objet un procédé de fabrication de panneaux à circuit intégré monoface en aluminium comportant la préparation de surface de deux tôles en alliage d'aluminium, le depôt sur l'une des tôles d'une encre anti- soudure dans des zones réservées correspondant au dessin du circuit, la liaison par laminage des tôles l'une sur l'autre, et l'expansion des canaux correspondant aux zones non soudées à l'aide d'un fluide sous pression, dans lequel l'une des tôles est en alliage de la série 1000 et l'autre en alliage contenant du fer et du manganèse et tel que Fe + Mn > 0,8% (en poids), et de préférence > 1, voire 1,5%. L'alliage au fer et au manganèse est obtenu de préférence par coulée continue de bandes entre deux cylindres refroidis. L'invention a également pour objet un procédé continu de fabrication de panneaux à circuit intégré en alliage d'aluminium.

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