Pechiney Rhenalu

Constellium France

Jean-Francois Verdier

Michel Leroy

Christophe Sigli

Guy-Michel Raynaud

Pierre Sainfort

Ravi Shahani

Laurent Calaque

Phlilippe Lassince

Jean-Remi Butruille

Didier Valax

A manufacturing process for a remelt block containing aluminum designed for making aluminum alloy for the aircraft industry in which scrap containing mainly aluminum alloys used in the aircraft industry is supplied during a supply stage, the scrap is melted in a smelting furnace in order to obtain an initial molten metal bath during a smelting stage, the initial molten metal bath is subjected to purification by fractional crystallization in order to obtain a solidified mass and a bath of residual liquid during a segregation stage, and the solidified mass is recovered in order to obtain a remelt block during a recovery stage. The invention is particularly useful for the recycling of aluminum alloys used in the aircraft industry as it makes it possible to purify scrap of series 2XXX or series 7XXX alloys for iron and silicon, without eliminating additive elements such as zinc, copper and magnesium.

Process for recycling aluminum alloy scrap coming from the aeronautical industry

Aluminium alloy semi-finished product manufacturing process using recycled raw materials

Thick alznmgcu alloy products with improved properties

Aluminum alloy semi-finished product manufacturing process using recycled raw materials

A rolled, forged or extruded AlZnMgCu alloy product, used to manufacture structural elements for aircraft, particularly wing spars. The product is greater than 60 mm thick, and has a composition (% by weight):

Thick alZnMgCu alloy products with improved properties

Growing community of inventors

Issoire, France

Jean-Francois Verdier