Patent ID: 9125243
Filing Date: 2015-09-01
Classification: C21D,H05B,Y02P,Y10T

Abstract:
1. An electromagnetic pulse surface treatment system for treating a work piece, having a bearing surface and a working surface, with a single electromagnetic pulse, comprising: an electromagnetic pulse generator having a power supply and a capacitor, wherein the electromagnetic pulse generator produces a current pulse having a current pulse duration; an electromagnetic pulse tool in electrical communication with the electromagnetic pulse generator, wherein the electromagnetic pulse tool has a tool face and the tool face has a tool face perimeter, for forming and directing the single electromagnetic pulse toward the working surface; and a controller to control operation of the electromagnetic pulse generator to generate the current pulse which travels to the electromagnetic pulse tool such that the single electromagnetic pulse emanates from the electromagnetic pulse tool to produce an indentation and a residual compressive stress layer in the working surface with substantially no stress change in the bearing surface opposite the residual compressive stress layer, wherein the tool face produces the indentation entirely below an untreated surface and free of pile-up above the level of the untreated surface along a perimeter of the indentation, and wherein the indentation is free of sharp transitions and comprises only smooth and continuous surfaces having radii greater than 1 millimeter and an indentation depth of less than 0.5 millimeter.