Methods and apparatus for electrochemically deburring perforate

Details Methods and apparatus for electrochemically deburring perforate Methods and apparatus for electrochemically deburring perforate

1982-02-22

1984-11-13

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204211, 204224M, 204228, 204297W, 204DIG7, 204225, C25F 314, C25F 700

Patent

active

044824459

ABSTRACT:
Methods and apparatus for electrochemically deburring perforate metallic clad dielectric laminates such, for example, as laminated printed circuit boards (PCBs) or printed wiring boards (PWBs) and similar machined and fabricated laminated dielectric parts; and, more specifically, methods and apparatus for removing burrs formed during drilling, punching and similar machining operations for forming holes in a workpiece and wherein the conductive path for current flow during the electrochemical deburring process extends through the thru-hole perforations formed in the workpiece being deburred so as to concentrate current densities and preferential electrochemical attack in the regions of the clad at the peripheral edges of the thru-hole perforations in the clad dielectric laminate.

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