1
Stephen Martin Evans, Andrew Bell: Methods of manufacturing rotary drill bits. Camco International, Jeffery E Daly, November 21, 2000: US06148936 (71 worldwide citation)

A rotary drill bit is manufactured by a powder metallurgy process by placing a metal mandrel in a mold, packing the mold with particulate matrix-forming material, infiltrating the material with a molten binding alloy, and cooling the assembly to form a solid infiltrated matrix bonded to the mandrel. ...


2
Evans Steven Martin, Bell Andrew: Methods of manufacturing rotary drill bits. Camco Int, April 26, 2000: EP0995876-A2 (65 worldwide citation)

A rotary drill bit is manufactured by a powder metallurgy process by placing a metal mandrel 54 in a mould 38, packing the mould 38 with particulate matrix-forming material 50, infiltrating the material with a molten binding alloy, and cooling the assembly to form a solid infiltrated matrix bonded t ...


3
Stephen Martin Evans: Methods of manufacturing rotary drill bits. Camco International, Jeffery E Daly, February 19, 2002: US06348110 (40 worldwide citation)

A rotary drill bit is manufactured by a method including the step of forming at least a portion of the bit body from a precipitation hardening alloy, and brazing cutters to the bit body by a heating and cooling cycle during which the bit body is first heated to a temperature sufficient to melt the b ...


4
Heeman Choe, John H Stevens, James C Westhoff, Jimmy W Eason, James L Overstreet: Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits. Baker Hughes Incorporated, TraskBritt, March 29, 2011: US07913779 (8 worldwide citation)

Rotary drill bits for drilling subterranean formations include a bit body and at least one cutting structure disposed on a face thereof. The bit body includes a crown region comprising a particle-matrix composite material that includes a plurality of boron carbide particles dispersed throughout an a ...


5
Stephen Martin Evans: Methods of manufacturing rotary drill bits. Camco International, Jeffery E Daly, September 12, 2000: US06116360 (7 worldwide citation)

A rotary drill bit is manufactured by a method including the step of forming at least a portion of the bit body from a precipitation hardening alloy, and brazing cutters to the bit body by a heating and cooling cycle during which the bit body is first heated to a temperature sufficient to melt the b ...


6
Heeman Choe, John H Stevens, James C Westhoff, Jimmy W Eason, James L Overstreet: Methods of forming earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials. Baker Hughes Incorporated, TraskBritt, July 31, 2012: US08230762 (6 worldwide citation)

Methods of manufacturing rotary drill bits for drilling subterranean formations include forming a plurality of boron carbide particles into a body having a shape corresponding to at least a portion of a bit body of a rotary drill bit, infiltrating the plurality of boron carbide particles with a molt ...


7
Evans Stephen Martin: Methods of manufacturing rotary drill bits. Camco International, January 15, 1999: GB2330787-A (3 worldwide citation)

A rotary drill bit is manufactured by a method including the step of forming at least a portion of the bit body 31 from a precipitation hardening alloy, and brazing cutters to the bit body by a heating and cooling cycle during which the bit body is first heated to a temperature sufficient to melt th ...


8
Evans Stephen Martin, Bell Andrew: Methods of manufacturing rotary drill bits. Camco International, April 26, 2000: GB2342876-A

A rotary drill bit is manufactured by a powder metallurgy process by placing a metal mandrel 54 in a mould 38, packing the mould 38 with particulate matrix-forming material 50, infiltrating the material with a molten binding alloy, and cooling the assembly to form a solid infiltrated matrix bonded t ...


9
Heeman Choe, John H Stevens, James C Westhoff, Jimmy W Eason, James L Overstreet: Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits. Trask Britt, May 10, 2007: US20070102200-A1

Rotary drill bits for drilling subterranean formations include a bit body and at least one cutting structure disposed on a face thereof. The bit body includes a crown region comprising a particle-matrix composite material that includes a plurality of boron carbide particles dispersed throughout an a ...


10
Heeman Choe, John H Stevens, James C Westhoff, Jimmy W Eason, James L Overstreet: Methods of forming earth boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum based alloy matrix materials. Baker Hughes Incorporated, June 16, 2011: US20110142707-A1

Methods of manufacturing rotary drill bits for drilling subterranean formations include forming a plurality of boron carbide particles into a body having a shape corresponding to at least a portion of a bit body of a rotary drill bit, infiltrating a plurality of boron carbide particles with a molten ...



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