Articles techniques et présentations

Arc welding is a widely used process in heavy industry for the assembly of metallic components. To ensure high-quality welds, it is essential to understand both the welding process and the complex interactions within the melt pool. Numerical simulation is employed as a predictive tool to ... En savoir plus

This work addresses the critical challenge of accurately determining the inner states of three-phase electric smelting furnaces, commonly used in ferro-alloy and silicon production. Gaining insights into these internal states is crucial for optimizing furnace performance, energy ... En savoir plus

Plasma torches are essential components in high-temperature applications such as plasma gasification, where stable and focused energy delivery is critical for the efficient conversion of waste into syngas. A key challenge in these systems lies in understanding and optimizing the gas ... En savoir plus

The current and energy transfer to cathodes of vacuum arcs usually occurs in bright, narrow regions, known as cathode spots. Owing to extreme conditions in these spots, the cathode surface is eroded: electrode material is vaporized, and craters and molten metal jets are formed. The study ... En savoir plus

This work, which is done in the framework of the SisAl Pilot EU project, presents the use of the COMSOL Multiphysics® software for simulating an ensemble averaged electric arc in a laboratory-scale electric arc furnace. The SisAl Pilot project aims at optimising the silicon production in ... En savoir plus

In the nuclear industry, and particularly at Framatome, mastery of welding processes is essential. Framatome is one of the world leaders in this field and wants to improve even more. The work presented focuses on improving the TIG (Tungsten Inert Gas) welding process, and more ... En savoir plus

Nowadays, surge protection devices are widely used in electrical grids to suppress over voltages during transient conditions caused by voltage surges and to prevent damages of industrial or household devices. The working principle is based on the initiation of an arc with a burning ... En savoir plus

Manufacturing of metal component in industry involves many kind of processes where materials experience high temperature and changes of state. Then, oxidation may become a significant topic regarding industrial requirement and specification. This issue is well-known in welding ... En savoir plus

Numerical investigation of Bi-directional Pulsing in Dual Magnetron Sputtering Mohammad Afaque Hossain1, Mateusz Wiosna2, , Michalina Perron2, Emil Grochala2, Jakub Studniarek2, Yilei Shen1, Wojciech Gajewski2 1 TRUMPF Hüttinger GmbH + Co. KG, Bötzinger Str.80, 79111 Freiburg im ... En savoir plus

The vacuum arc remelting is a refining process used to melt reactive metals like titanium, zirconium or hafnium. Melting is performed under vacuum to avoid reactions between liquid metal and oxygen which could be a source of pollution. This process is particularly well suited to purify ... En savoir plus