Baker Hughes Corporation

Other

Baker Hughes, a Ge Compnay, LLC

Baker Hughes Holdings LLC

Edison Welding Institute, Inc.

Nathan David Ames

Redd H Smith

John H Stevens

James Andy Oxford

Shuchi Khurana

Jose Ramirez

Kirk E Cooper

Edward D Herderick

Nicholas J Lyons

Alber Sadek

Methods for welding a particle-matrix composite body to another body and repairing particle-matrix composite bodies are disclosed. Additionally, earth-boring tools having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body of an earth-boring tool may be repaired by removing a damaged portion, heating the particle-matrix composite bit body, and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body may be welded to a metallic body by forming a joint, heating the particle-matrix composite body, melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body, metallic filler material and metallic body at a controlled rate.

Earth-boring tools having particle-matrix composite bodies and methods for welding particle-matrix composite bodies

A method for fabricating assemblies that includes providing a first component that further includes silicon carbide and that has an upper portion and a tapered lower portion; providing a second component that further includes silicon carbide and that has an upper portion that is adapted to receive the tapered lower portion of the first component; providing a predetermined amount of multiphase Al&#x2014;Si braze foil; grinding the Al&#x2014;Si braze foil into a powder; mixing a predetermined amount of braze paste binder with the Al&#x2014;Si powder to form a slurry; uniformly applying the slurry to the tapered lower portion of the first component; uniformly applying the slurry to the upper portion of the second component and inserting the tapered lower portion of the first component into the upper portion of the second component; and heating the applied slurry to a temperature of 725&#xb0; C. to 1450&#xb0; C. for a predetermined period of time.

Method for joining silicon carbide components to one another

A method for fabricating assemblies includes providing first and second components that include ceramic, metal, or composite; positioning a multiphase joining interlayer between the first and second components, wherein the joining interlayer includes a first phase that melts at a first temperature and a second phase interspersed throughout the first phase, and wherein the second phase melts at a second temperature that is lower than the melting temperature of the first phase; and heating the joining interlayer to a temperature in the range of 725&#xb0; C. to 1450&#xb0; C. for a predetermined period of time to soften the first phase and melt the second phase, wherein the first phase remains in a solid or a semi-solid state, and wherein the second phase segregates to the boundaries of the first phase and transforms the joining interlayer into a substantially porosity-free adherent material that joins the first component to the second component.

Method for fabricating silicon carbide assemblies

Methods for reparing particle-matrix composite bodies

A reactive foil is used to assemble the components of rock bit cutters and to affix cutting elements to rock bit bodies. A small pulse of localized energy ignites the foil in a fraction of a second to deliver the necessary amount of heat energy to flow solder or braze and form a strong, true metallic joint. The reaction in the foil may be activated using optical, electrical, or thermal sources.

System, method, and apparatus for reactive foil brazing of cutter components for fixed cutter bit

Growing community of inventors

Sunbury, OH, United States of America

Nathan David Ames