Impact of a Transient and Asymmetrical Distribution of the Electric Arc on the Solidification Conditions of the Ingot in the VAR Process

Autor: Pierre-Olivier Delzant, Pierre Chapelle, Alain Jardy, Alexey Matveichev, Yvon Millet

Publikováno v: Metals, Vol 12, Iss 3, p 500 (2022)

Vacuum Arc Remelting is an important method of processing reactive and refractory liquid metal alloys, including titanium and zirconium alloys. Recent measurements of the electric arc dynamics under the presence of a time-varying magnetic field durin

Externí odkaz: https://doaj.org/article/9c3fbc16a41b4ac19c2498ca68080a00

Swirling supersonic gas flow in an EIGA atomizer for metal powder production: Numerical investigation and experimental validation

Autor: Baraa Qaddah, Pierre Chapelle, Jean Pierre Bellot, Julien Jourdan, Nicolas Rimbert, Agathe Deborde, Raphael Hammes, Aurélie Franceschini

Publikováno v: Journal of Materials Processing Technology. 311:117814

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83249a689f6e96e611edf8ce4ee05cd0
https://doi.org/10.1016/j.jmatprotec.2022.117814

3D numerical simulation of the VAR consumable electrode melting process

Autor: Pierre Chapelle, Rayan Bhar, Alain Jardy, Vincent Descotes

Publikováno v: Liquid Metal Processing and Casting 2019
International Symposium on Liquid Metal Processing and Casting 2019
International Symposium on Liquid Metal Processing and Casting 2019, Sep 2019, Birmingham, United Kingdom
Metallurgical and Materials Transactions B
Metallurgical and Materials Transactions B, Springer Verlag, 2020, 51 (6), pp.2492-2503. ⟨10.1007/s11663-020-01966-x⟩

A 3D numerical model was set up to simulate the formation and dynamics of the liquid metal film under the consumable electrode during VAR process. In the present paper, the implementation of this model is described. It was developed using the open so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c810cf015c47b9cf8bcd135135a883f6
https://hal.science/hal-02336994

On the Modeling of Thermal Radiation at the Top Surface of a Vacuum Arc Remelting Ingot

Autor: Pierre Chapelle, B. Baqué, P.-O. Delzant, Alain Jardy

Publikováno v: Metallurgical and Materials Transactions B
Metallurgical and Materials Transactions B, Springer Verlag, 2018, 49 (3), pp.958-968. ⟨10.1007/s11663-018-1194-y⟩

Two models have been implemented for calculating the thermal radiation emitted at the ingot top in the VAR process, namely, a crude model that considers only radiative heat transfer between the free surface and electrode tip and a more detailed model

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdf27619591827b483751b3e8d13c0f9
https://hal.archives-ouvertes.fr/hal-02106550

EVOLUTION OF THE CATHODE SPOT DISTRIBUTION IN AN AXIAL MAGNETIC FIELD CONTROLLED VACUUM ARC AT LONG CONTACT GAP

Autor: Alain Jardy, B. Tezenas du Montcel, C. Creusot, Pierre Chapelle

Publikováno v: Plasma Physics and Technology
Plasma Physics and Technology, Department of Physics of the Faculty of Electrical Engineering of Czech Technical University, 2017, 4 (1), pp.99-103. ⟨10.14311/ppt.2017.1.99⟩

The distribution of cathode spots in a CuCr25 vacuum arc controlled by an axial magnetic field and ignited on the lateral surface of the cathode is investigated for long gap distances, from the processing of high-speed video images. The processing me

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::091d2dd1eaf1cbc9876cd1b1a46a863c
https://hal.archives-ouvertes.fr/hal-02106987