Castolin, S.a.

Eutectic Corporation

Hans-Theo Steine

Wolfgang Simm

Peter Sommer

Autogenous flame spraying apparatus for the flame spraying of

A flame spray directing means for connection to a flame spray nozzle of an autogenous flame-spraying apparatus for optimizing the working parameters of the apparatus including flame speed and kinetic energy is provided. The means comprises a hollow longitudinally extending module of tubular configuration through which flame spray material is caused to flow. The extending module has a predetermined length with one end portion thereof shaped for coupling to the flame spray nozzle and for providing a combustion chamber therefor, with its opposite end portion providing an exit end therefor. A portion of the hollow module extending from the combustion chamber to the exit end coaxially defines an extending accelerating chamber which is divided into a first stage chamber of specified diameter following the combustion chamber and a second stage chamber in which the diameter thereof less than that of the combustion chamber.

Method of flame-spraying of powdered materials and flame-spraying

A method is provided for flame-spraying powdered materials onto a substrate by means of an autogenous flame-spraying apparatus of the type in which a combustion gas-oxidation gas mixture is produced and ignited at the outlet of a burner nozzle with the powdered material conveyed by a carrier gas to the burner nozzle and introduced in the flame at the outlet of the burner nozzle. The working parameters of the flame-spraying apparatus are chosen so as to provide an energy constant P.sub.E which together with the kinetic energy E.sub.k of the particles enables the use of a broad range of flame speeds.

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Chavannes, Germany

Hans-Theo Steine