Patent ID: 9327344
Filing Date: 2016-05-03
CPC Classification: B22C,B22D

Claim Text:
1. A method comprising: performing laser ablation to a preliminary wax casting model to form a modified wax model of a turbomachinery part including at least one cooling hole absent from the preliminary wax casting model, wherein the performing of the laser ablation includes applying an ultra-short-pulse laser to the preliminary wax casting model to directly vaporize a portion of the preliminary wax casting model, forming the at least one cooling hole, wherein the cooling hole has an aspect ratio of approximately 5 to approximately 10; coating the modified wax model of the turbomachinery part to form a mold shape around the modified wax model of the turbomachinery part; and removing the modified wax of the turbomachinery part model to leave a casting mold of the turbomachinery part including the at least one cooling hole.