Patent ID: 9481023
Filing Date: 2016-11-01
CPC Classification: B21D,B21J,B21K,B22F,B26F,B32B,C21D,Y10T

Claim Text:
1. A tool for use in a machine to modify a workpiece, the tool comprising: a member composed of a tool steel, the member having an outer surface defining a first portion configured to be coupled with the machine and a second portion adapted to contact the workpiece, the member including a first region that extends from the outer surface to a depth of greater than 1 millimeter and a second region separated from the outer surface by the first region, and the first region including a microstructure with a plurality of grains having a preferred orientation that provides a directionality to the microstructure of the first region and having an average grain size that is smaller than an average grain size of a plurality of grains in a microstructure of the second region, wherein the plurality of grains in the microstructure of the first region have a different grain orientation than the plurality of grains in the microstructure of the second region.