LISI GROUP - Integrated report 2021

LISI – 2021 INTEGRATED REPORT — 41 AEROSPACE PROCESS New concepts for the aircraft of the future As part of the ECOPROP research project led by Airbus and supported by the DGAC (French Civil Aviation Authority), the LISI AEROSPACE site at Marmande (Southwest of France, in the Nouvelle-Aquitaine Region) is participating in the development of new manufacturing processes for the air intake lipskin for the aircraft of the future. The idea is to design and validate, in cooperation with the Airbus teams, the technologies that will make it possible to manufacture these new parts in a simple and industrial way. For air intakes, this involves much lower tolerance levels for aerodynamic surface compliance (of the order of a millimeter for parts several meters in diameter), a reduction in the number of parts in order to minimize the interfaces and finally the use of new materials limiting in-flight thermoelastic deformation. The overall objective is to reduce engine consumption. AEROSPACE PROCESS 3D printing for the design and manufacture of Caps In order to be able to quickly and efficiently produce caps with different designs and in quantities adapted to market demand, LISI AEROSPACE has developed a process using 3D additive technologies by binder jetting. This system uses a binding agent, deposited locally on a thin layer of powder, layer by layer, as per the 3D model. AUTOMOTIVE PROCESS Newmulti-material assembly processes LISI AUTOMOTIVE has developed an innovative in situ additive manufacturing process that combines laser texturing and supersonic cold spraying of metallic powder. The technology, LISI µ -MACH-ASSEMBLY-PROCESS®, makes it possible to create numerous assembly configurations without geometric limits. Its low electrical contact resistance makes it particularly suitable for electrical connections at traction battery level and more generally for assemblies intended for electrified vehicles. An industrial demonstrator located in Delle (France, Belfort Territory in Bourgogne- Franche-Comté Region) since October 2021 is dedicated to developing this technology. MEDICAL PROCESS Medical prostheses: towards a full industrial offer LISI MEDICAL aims to develop its market share in the knee prosthesis sector. By relying on the division’s leadership in the outsourcing of hip prostheses and its expertise in forging and finishing, the teams at the Hérouville-Saint-Clair (Nord of France, in the Normandy Region) site are working on the development of optimized processes integrating the foundry in order to meet the requirements of its customers. LISI MEDICAL relies for this on its internal machining and automated polishing capacities allowing for the production of large volumes of implants with a high level of quality at controlled costs.