Constellium Issoire

Other

Aluminium Pechiney

Pechiney Rhenalu

Pierre Le Brun

Philippe Jarry

Jean M Muller

Jean-Louis Achard

Catherine Xuereb

Thierry Odievre

Joel Bertrand

Jocelyn Prigent

Liquid metal degassing device comprising a chamber containing a liquid metal bath, a device for circulating a gas through a purification chamber and in that the purification chamber comprises a getter material configured to trap dihydrogen from the circulating gas. Method for degassing a liquid metal bath to reduce the hydrogen concentration of the liquid metal comprising the following steps

Device for trapping hydrogen

The method comprises the following steps:

Method for inspecting a liquid metal by ultrasounds

Process and apparatus for displaying, measuring the size of and counting individual inclusions in suspension in moving liquid metal using an ultrasound sensor including emission and reception devices. Using the emission device, a series of ultrasound beam pulses is emitted within the liquid metal, and echoes reflected by the inclusions are received using the reception device. The reflected echoes are successively acquired and processed, and displayed as images which are analyzed to count and measure the diameter of inclusions. The sensor is calibrated by selectively placing in a path defined by the beam pulses at least one control reflector having predetermined dimensions and a geometry stable over time, successively acquiring and processing reflected echoes from the control reflector, displaying the reflected echoes from the control reflector as images, and analyzing the control reflector echo images to determine a relationship between amplitude of the images and the control reflector dimensions.

Method and device for counting inclusions in a liquid metal bath with ultrasounds

Rotary gas dispersion device for treating a liquid aluminium bath

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Saint Jean de Soudain, France

Pierre Le Brun