公开(公告)号：US20240417839A1

公开(公告)日：2024-12-19

申请号：US18712904

申请日：2022-11-23

Applicant: CONSTELLIUM MUSCLE SHOALS LLC ,  CONSTELLIUM NEUF-BRISACH

Inventor： Gilles GUIGLIONDA ,  Michael LANGILLE ,  Jichao LI

IPC: C22F1/043 ,  B22D11/00 ,  B22D11/041 ,  C22C21/02 ,  C22F1/00

Abstract: The invention is an aluminum alloy strip having the composition Si: 1.00-1.50% %, Fe:

公开(公告)号：US20220090269A1

公开(公告)日：2022-03-24

申请号：US17423394

申请日：2020-01-17

Applicant: CONSTELLIUM NEUF-BRISACH ,  Constellium Bowling Green LLC

Inventor： Matthieu BOEHM ,  Jichao LI

IPC: C23F1/20 ,  C23C22/34 ,  C23C22/82

Abstract: The invention relates to a continuous coil surface treatment process suitable for both a coil of a 5XXX aluminum alloy sheet and of a 6XXX aluminum alloy sheet. The process comprises the successive steps of etching the surface with a fluorine-free acidic solution; rinsing with deionized water; applying a conversion solution comprising titanium and zirconium, and drying. The invention surface treatment method is environmentally friendly and enables the production of the treated surfaces in an efficient and reliable manner for both 5XXX and 6XXX alloys. It is particularly adapted for the production of aluminum alloy sheets for the automotive industry.