Giat Industries

Snmi-Societe Nouvelle De Metallisation Industrie

Nexter Systems

Alain Proner

Pascal Sabourin

Maurice Ducos

Jean-Philippe Dacquet

Yann Guilmard

Jean-Luc Coupeau

J Phillipe Dacquet

A method for setting a protective coating on the inner wall of a tube includes providing a cylindrical sleeve, then setting on the outer surface of the sleeve a layer of a thermo fusible material, then machining the sleeve to provide it with an external diameter corresponding to the tube internal diameter, positioning the sleeve in the tube, and finally soldering the sleeve on the tube by applying heat.

Process to deposit a protective coating on the inner wall of a tube, and notably a gun barrel produced according to this process

The invention relates to a process for coating or hardfacing recharging a part by means of a plasma transferred arc. According to the process, on the part (1) to be coated or hardface is deposited at least one weld bead (7a, 7b, 7c) of said material solely by means of the plasma transferred arc (5), by moving the plasma relative to the part at a speed of 1.5 to 50 m/min and using a power of the plasma such that the surface of the part is melted over a thickness at the most equal to 0.5 mm and so that the enlargement of the grains in the melted area does not exceed 10%, without cooling the part during recharging.

Process for coating or hardfacing a part by means of a plasma

Growing community of inventors

Lirac, France

Alain Proner