Arc thermal spray gun extension and gas jet member therefor

Electric heating – Metal heating – For deposition welding

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Details

219 7616, 118300, 427449, C23C 400, B05B 722

Patent

active

060910429

ABSTRACT:
An arc spray apparatus includes a spray gun body with a pair of converging wire guides to guide two feeding metal wires to a region of contact at the wire tips where an arc melts the tips. A gas jet member has a projection extending forwardly from the gun body and offset laterally from a guide plane defined by the axes of the wire guides. The projection has a primary orifice to issue a primary gas jet directed laterally to the point of contact for atomization of the molten metal and production of a spray stream at an angle to the guide plane, preferably perpendicular. A plurality of at least four secondary orifices are arcuately spaced about the primary orifice. The secondary orifices effect secondary gas jets substantially parallel to the primary jet, so that the spray stream is constricted by the secondary gas jets.

REFERENCES:
patent: 3455510 (1969-07-01), Rotolico
patent: 3901441 (1975-08-01), Kasagi
patent: 4492337 (1985-01-01), Harrington et al.
patent: 4632309 (1986-12-01), Reimer
patent: 4668852 (1987-05-01), Fox et al.
patent: 4853513 (1989-08-01), Fuimefreddo
patent: 5191186 (1993-03-01), Crapo et al.
patent: 5908670 (1999-06-01), Dunkerley et al.

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