L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Lincoln Global, Inc.

L'air Liquide, Societe Anonyme a Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude

Air Liquide Welding France

Fabien Januard

Jacky Laurent

Youssef Joumani

Bernard Labegorre

Jean-Claude Vuillermoz

Savine Bockel-Macal

Michael G K Grant

Bruno Allemand

Richard Chevalier

Gérard Plottier

A device for arc welding with fusible wire including a device for setting the wire speed and a device for selecting a metal transfer rate type, the device for setting the wire speed being maneuverable by the hands or fingers of an operator. The device for selecting a metal transfer rate type cooperate with the device for setting the wire speed in such a way as to allow the operator to set the wire speed by maneuvering the device for setting the wire speed and to automatically select, on the basis of the wire speed setting, a metal transfer rate type.

ARC welding device with automatic selection of the metal transfer rate

Process and apparatus for melting raw material in an electric arc furnace using a flame of variable direction, the apparatus comprising a burner and a lance whereby the lance outlet opening and the burner outlet opening are not concentric and are located at a distance from one another, and whereby the lance axis forms an angle with the burner axis in the range from 10&#xb0; to 40.

Combined burner and lance apparatus for electric arc furnaces

The invention relates to a method for measuring the quantity of chemical species contained in a high-temperature gas, and especially the quantity of CO and/or COcontained in a gas emitted from a metal treating furnace, especially a light-arc furnace (EAF) or a converter (BOF). According to the invention, part of the gas to be analysed is extracted, the temperature of said gas is reduced to at least 300&#xb0; C., preferably to a temperature that is lower than or equal to 200&#xb0; C., in such a way as to obtain a at a temperature between 300&#xb0; C., preferably 200&#xb0; C., and the ambient temperature, and at least the quantity of CO and/or COsaid gas is then measured by means of the coherent light signal which is emitted by a laser diode through the gas and is retrieved on emergence from the gas.

Method for measuring gaseous species by derivation

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Herblay, France

Fabien Januard