METHOD FOR CURVEDLY CUTTING NONMETALLIC MATERIAL

摘要

Disclosed is a method for curvedly cutting a nonmetallic material, capable of curvedly cutting an edge of a reinforced nonmetallic material such as tempered glass with great speed and accuracy. The method for curvedly cutting a nonmetallic material comprises the steps of: forming an initial crack by a predetermined depth on the surface of a nonmetallic material so the initial crack is located on a curved line to be cut of the edge of the nonmetallic material; and irradiating a laser beam on the surface of the nonmetallic material along the curved line to be cut of the edge of the nonmetallic material so as to generate a thermal shock, thereby cutting the nonmetallic material by the propagation of the crack in the direction of both edges along the curved line to be cut of the edge around the pre-generated initial crack.