Patent ID: 7226516
Filing Date: 2007-06-05
Classification: B21D,Y10T

Abstract:
1. Method for producing an aluminum alloy one side flat integrated circuit panel including a flat side and a deformed side, comprising the steps of: surface preparation of two aluminum alloy sheets, a first of said sheets corresponding to the deformed side, and a second of said sheets corresponding to the flat side, depositing on one of the sheets a weld-proof ink in reserved areas corresponding to a circuit design, welding the sheets by rolling the sheets together, the reserved areas forming non-welded areas, and expanding channels corresponding to the non-welded areas using a pressurized fluid, wherein the deformed side is made of a 1000 series alloy and the flat side is made of an alloy containing iron and manganese, such that Fe+Mn>0.8% (by weight).