Methods of forming and repairing cutting element pockets in earth-boring tools with depth-of-cut control features, and tools and structures formed by such methods

摘要

Methods of forming and repairing earth-boring tools include providing wear-resistant material over a temporary displacement member to form a cutting element pocket in a body and a depth-of-cut control feature using the wear-resistant material. In some embodiments, the wear-resistant material may comprise a particle-matrix composite material. For example, a hardfacing material may be built up over a temporary displacement member to form or repair a cutting element pocket and provide a depth-of-cut control feature. Earth-boring tools include a depth-of-cut control feature comprising a wear-resistant material. The depth-of-cut control feature is configured to limit a depth-of-cut of a cutting element secured within a cutting element pocket partially defined by at least one surface of the depth-of-cut control feature. Intermediate structures formed during fabrication of earth-boring tools include a depth-of-cut control feature extending over a temporary displacement member.

主权项

1. A method of forming an earth-boring tool, comprising:
partially forming a cutting element pocket in a surface of a body of an earth-boring tool; inserting a temporary displacement member into the partially formed cutting element pocket; providing a particle-matrix composite material over an area of the surface of the body of the earth-boring tool adjacent the partially formed cutting element pocket and over a portion of a surface of the temporary displacement member to complete formation of the cutting element pocket and form a depth-of-cut control feature using the particle-matrix composite material; and removing the temporary displacement member from the completely formed cutting element pocket and securing a cutting element within the completely formed cutting element pocket.