Mechanically shaped hardfacing cutting/wear structures

摘要

A hardfacing material is applied to cutting elements formed on the surface of cutters of an earth-boring bit. The hardfacing material forms the outer surface of the teeth, and also substantially forms scrapers on the shell of each of the cutters. The adding of the hardfacing material to the outer surface of the teeth and the forming of the scrapers is accomplished through welding. The hardfacing material is machined from its “as-welded” state to have a smoother surface finish.