L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

La Soudure Autogene Francaise

Louis Auzary

Francis Cuny

Leon Pluta

Maurice Pourrat

In order to improve electric arc penetration of an arc welding torch, the angles of convergence .alpha. and .beta. of a sleeve and a nozzle of the torch are selected within an area which is inscribed in a quadrangular figure defined by the coordinates (.alpha., .beta.) with corners, or apices, at the four following points:

Welding torch with non-consumable electrode and double shielding gas

This invention relates to welding torches of the kind comprising a torch body which incorporates a tubular core having means of clamping a refractory electrode which projects beyond the torch body, flow-means for an arc-gas, which flow-means consists of an annular passage between the electrode and an axial flow-controlling sleeve which is arranged about said electrode and co-axially therewith, and means for circulating water to cool the torch body; and a nozzle for shielding the gas surrounding the torch body with a gap therebetween. Such torches are referred to in the industry as 'TIG' torches. In such a torch the invention consists in a combination of several features viz:

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Paris, France

Louis Auzary