Method of and device for the spark erosion of hardmeal objects

Details Method of and device for the spark erosion of hardmeal objects Method of and device for the spark erosion of hardmeal objects

1993-07-20

1994-04-19

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204147, 204206, 204224M, 204284, 204290R, 204292, 204231, 219 6912, 219 6915, 219 6917, B23H 702, B23H 1100

Patent

active

053042883

ABSTRACT:
A hardmetal object is cathodically protected from corrosion by a protective electrode during the spark-erosion process, which protective electrode is electrically connected to the hardmetal object via an external power source. The protective electrode is preferably plate-shaped.

REFERENCES:
patent: 2961394 (1960-11-01), Williams et al.
patent: 3278411 (1966-10-01), Williams
patent: 3723268 (1973-03-01), Johns et al.
patent: 4407711 (1983-10-01), Baboian et al.
patent: 4997534 (1991-03-01), Thornton
W. Wallace et al., "X-ray Measurements of Surface Residual Stresses in Cold Rolled-Brass", Advances in X-Ray Analysis, vol. 14, Plenum Press, New York, 1971, pp. 389-405.

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