Method of and apparatus for discharge-surfacing electrically con

Details Method of and apparatus for discharge-surfacing electrically con Method of and apparatus for discharge-surfacing electrically con

1980-01-17

1982-08-24

Shaw, C. C.

Electric heating

Metal heating

For deposition welding

B23P 1700

Patent

active

043462812

ABSTRACT:
A method of and apparatus for the surface treatment of a metallic workpiece, e.g. the coating, hardening or other change (referred to generally as metallurgical modification) of the surface makes use of a rotating tool electrode from a shank of which individual elongated conductive pieces extend. The pieces, at rest, converge away from the shank by a spread outwardly when the tool is rotated by a motor to slap against and tangentially contact the workpiece. An electric current is provided between the tool and workpiece so that the slapping contact of the individual pieces is coupled with a spark discharge between the pieces and the workpiece surface.

REFERENCES:
patent: 3277267 (1966-10-01), Blaszkowski
patent: 3459917 (1969-08-01), Felts
patent: 3523171 (1970-08-01), Belopitoy
patent: 3741426 (1973-06-01), Inoue
Andreev et al., "Semi-Automatic Machine for Electric Spark Deposition of Alloys", Machines & Tooling, 1975, pp. 29.

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