公开(公告)号：US20170166997A1

公开(公告)日：2017-06-15

申请号：US15325711

申请日：2015-07-10

Applicant: CONSTELLIUM ISSOIRE

Inventor： Alireza ARBAB ,  Laurent BOISSONNET ,  Jules DIAWARA ,  Pascal HERVIEU ,  Anne PICHAT

IPC: C22B21/00 ,  C22B7/00 ,  B22D7/00

CPC classification number: C22B21/0092 ,  B22D7/005 ,  C22B7/006 ,  C22B21/0007 ,  C22B21/0023 ,  C22B21/0069 ,  C22C21/10 ,  C22C21/16 ,  Y02P10/218 ,  Y02P10/23 ,  Y02P10/234

Abstract: The invention relates to a method of manufacturing an aluminum alloy ingot using scrap aluminum alloy in the 2xxx or 7xxx series wherein (i) scrap aluminum alloy in the 2xxx or 7xxx series is procured; (ii) optionally, oil present on the scrap is separated, (iii) a first treatment operation of said scrap is made by a first liquid at a temperature of at least 10° C., said first liquid being an aqueous solution with pH equal to 1 to 5 or 8 to 13, (iv) the first liquid and the scrap thus treated are separated, (v) at least one second treatment operation of said scrap by a second liquid is made, (vi) the second liquid and the scrap thus treated are separated, (vii) said scrap thus obtained is melted, (viii) a first solidification is made in a rough intermediate form, (viii) an aluminum alloy ingot in the series of scrap used is cast; The invention also relates to a fabrication method after rolling, extrusion and/or forging of an aeronautical structure comprising the steps in the above method, and then at least one rolling, extrusion and/or forging step of said aluminum alloy ingot in the series of scrap used.

公开(公告)号：US20240368732A1

公开(公告)日：2024-11-07

申请号：US18683841

申请日：2022-08-29

Applicant: CONSTELLIUM ISSOIRE ,  CONSTELLIUM NEUF-BRISACH ,  CONSTELLIUM MUSCLE SHOALS LLC

Inventor： Marc BERTHERAT ,  Laurent JOUET-PASTRE ,  Anne PICHAT ,  Alain VASSEL ,  Emmanuel WAZ

IPC: C22B21/00 ,  C22B7/00 ,  C22B9/00 ,  C22B9/16

Abstract: The invention relates to a scrap remelting line comprising at least one storage silo configured to store scrap, at least two induction furnaces for remelting the scrap and obtaining the remelted liquid metal, a means for supplying the scrap to the at least two induction furnaces, at least one furnace receiving the liquid metal (6), and a means for transporting the remelted liquid metal (5, 15) to the receiving furnace. The invention also relates to the method for obtaining liquid metal from scrap remelted in induction furnaces.

公开(公告)号：US20240352556A1

公开(公告)日：2024-10-24

申请号：US18683671

申请日：2022-08-29

Applicant: CONSTELLIUM ISSOIRE ,  CONSTELLIUM NEUF-BRISACH ,  CONSTELLIUM MUSCLE SHOALS LLC

Inventor： Anne PICHAT ,  Marc BERTHERAT ,  Alain VASSEL

IPC: C22B21/00 ,  C22B7/00 ,  C22B9/00 ,  C22B9/05 ,  C22B9/16

CPC classification number: C22B21/0092 ,  C22B7/003 ,  C22B9/003 ,  C22B9/006 ,  C22B9/05 ,  C22B9/16 ,  C22B21/0007

Abstract: The invention relates to a method for re-melting coated aluminum alloy scrap comprising a step of supplying shredded coated aluminum alloy scrap, consisting of individual entities; a decoating step, a step of preparing a heel, a step of loading and melting the decoated scrap on the heel. The invention is characterized in that the scrap has a specific geometry wherein at least 50% of the individual entities of the shredded coated scrap has a fold ratio (R) of less than or equal to 0.6, wherein the fold ratio (R) of an individual entity is defined by: fold ratio=R=(unfolded area−folded area)/(unfolded area), wherein the folded area is the maximum area of the orthogonal projection of the individual entity onto a plane and the unfolded area is the total area of the same individual entity after it has been unfolded.

公开(公告)号：US20240352555A1

公开(公告)日：2024-10-24

申请号：US18683614

申请日：2022-08-29

Applicant: CONSTELLIUM ISSOIRE ,  CONSTELLIUM NEUF-BRISACH ,  CONSTELLIUM MUSCLE SHOALS LLC

Inventor： Marc BERTHERAT ,  Anne PICHAT ,  Emmanuel WAZ ,  Alain VASSEL

IPC: C22B21/00 ,  C22B7/00 ,  C22B9/00 ,  F27B14/06 ,  F27B14/08 ,  F27D3/00 ,  F27D11/06

CPC classification number: C22B21/0092 ,  C22B7/003 ,  C22B9/003 ,  F27B14/061 ,  F27B14/0806 ,  F27D3/0024 ,  F27D3/0025 ,  F27D11/06

Abstract: The invention relates to a method for melting an aluminum load, comprising: supplying an aluminum load (11, 12, 13) of which at least 15% by weight is in the form of a sow of essentially cylindrical shape (11) of height h and maximum diameter d; loading said load into a cylindrical induction furnace (10) of height H and maximum internal diameter D in which the height direction of said sow is substantially parallel to the height direction of the furnace; melting said load by induction to obtain a liquid metal bath (2); optionally adjusting content of said liquid metal in which d is in the range from 0.7 D to 0.97 D and preferably in the range from 0.84 D to 0.92 D.