公开(公告)号：US20170306441A1

公开(公告)日：2017-10-26

申请号：US15516623

申请日：2015-10-06

Applicant: CONSTELLIUM ISSOIRE

Inventor： Jean-Louis ACHARD ,  Pierre LE BRUN

IPC: C22B9/02 ,  B06B3/00 ,  C22B21/06 ,  G01N33/20

Abstract: The method comprises the following steps: a) Providing a sonotrode (1) formed from an essentially inert material with respect to the liquid metal, such as a ceramic, and preferably a silicon nitride or a silicon oxynitride, such as SIALON, or a metal essentially inert to said liquid metal, b) Immersing at least partially the sonotrode (1) in a bath of said metal, c) Applying to the sonotrode (1) power ultrasounds, particularly ultrasounds having a power greater than 10 watts to obtain the wetting of said sonotrode by said metal, d) Applying continuously to the sonotrode (1) measurement ultrasounds, also known as testing ultrasounds, particularly ultrasounds wherein the frequency is between 1 and 25 MHz, e) Applying intermittently to the sonotrode (1) power ultrasounds, particularly ultrasounds having a power greater than 10 watts, to maintain said wetting.

公开(公告)号：US20220340999A1

公开(公告)日：2022-10-27

申请号：US17615922

申请日：2020-06-03

Applicant: CONSTELLIUM ISSOIRE

Inventor： Jocelyn PRIGENT ,  Philippe JARRY ,  Pierre LE BRUN

IPC: C22B34/12 ,  C22B21/06 ,  C22B9/05 ,  C21C7/072

Abstract: 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 a) Preparing a liquid metal bath, preferably an aluminum alloy b) Circulating a gas, c) Exchanging hydrogen from the circulating gas with the liquid metal such that the hydrogen dissolved in the liquid metal bath diffuses into the circulating gas and enriches the circulating gas with dihydrogen, d) Purifying the circulating gas enriched with dihydrogen in a purification chamber comprising a getter material configured to trap dihydrogen from the circulating gas.