Patent ID: 8164020
Filing Date: 2012-04-24
Classification: B23H,B23K

Abstract:
1. A method of disintegration of a metal body using a tubular columnar wall graphite electrode with an interior and an exterior and a cutting end to cut a closed boundary channel in the metal body, comprising vibrating the electrode in a direction parallel to the columnar wall of the electrode while applying a voltage to make and break an arc between the cutting end and body to cause areas of the body at the arc to become molten, supplying coolant through the electrode wall from an opposite end remote from the cutting end to thermally shock and fracture molten surface areas of the body heated by current supplied by the electrode contacting said surface areas into solidified particles, the electrode contacting the body at its forward position of a vibration cycle and delivering coolant to the body when the electrode is at a rearward position of the vibrating cycle, and allowing coolant to flush the solidified particles along both the exterior and interior of the electrode.