GB1455951A - Boronized drill bit cutters and methods - Google Patents

Boronized drill bit cutters and methods

Info

Publication number
GB1455951A
GB1455951A GB2208074A GB2208074A GB1455951A GB 1455951 A GB1455951 A GB 1455951A GB 2208074 A GB2208074 A GB 2208074A GB 2208074 A GB2208074 A GB 2208074A GB 1455951 A GB1455951 A GB 1455951A
Authority
GB
United Kingdom
Prior art keywords
cutter
carburizing
drill bit
teeth
cutters
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2208074A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hughes Tool Co
Original Assignee
Hughes Tool Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hughes Tool Co filed Critical Hughes Tool Co
Publication of GB1455951A publication Critical patent/GB1455951A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12958—Next to Fe-base component

Abstract

1455951 Making drill bit cutters HUGHES TOOL CO 17 May 1974 [10 Aug 1973] 22080/74 Heading B3A [Also in Divisions C7 and E1] A method of manufacturing steel rotatable cutters for earth boring drill bits comprises forming a cutter with exterior earth disintegrating teeth carburizing at least selected areas of the exterior of the cutter to form a carburized case, boronizing the carburized case, and heat treating the carburized case. The heat treating comprises hardening and tempering the teeth. A drill bit 11, Fig. 1, has a threaded shank 13, nozzles 15 and head sections 17 each supporting a rotatable cutter 19. Alternatively, a conical cutter 19 may be mounted on the head section via a bearing pin 35, Fig. 3, and has teeth 25, 31, and a spear point 33. The carburizing may be by gas, pack or liquid and the carburization is for 19 hours at 927‹ C. The boronizing process may also be performed by pack, gas or liquid methods at temperatures of 700 to 900‹ C. for times of 15 minutes to 36 hours. The hardening comprises quenching in oil from at least 755‹ C. or quenching in carburizing or reducing atmospheres from a temperature of 780-843‹ C. Tempering is effected at 143-266‹ C. for about an hour. Decarburization or oxidation of the boronized case may be prevented by using a carburizing or reducing atmosphere, or by using a coating, e.g. copper plating. An alternative form of cutter, Fig. 4 (not shown), comprises rows of wear resistant inserts, preferably formed of cemented WC with a cobalt binder, having an interference fit in holes drilled in the cone 19.
GB2208074A 1973-08-10 1974-05-17 Boronized drill bit cutters and methods Expired GB1455951A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00387565A US3842921A (en) 1973-08-10 1973-08-10 Boronized drill bit cutters

Publications (1)

Publication Number Publication Date
GB1455951A true GB1455951A (en) 1976-11-17

Family

ID=23530430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2208074A Expired GB1455951A (en) 1973-08-10 1974-05-17 Boronized drill bit cutters and methods

Country Status (6)

Country Link
US (1) US3842921A (en)
BR (1) BR7402517A (en)
CA (1) CA1003817A (en)
GB (1) GB1455951A (en)
IT (1) IT1017922B (en)
SE (1) SE397842B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979998A (en) * 1989-10-10 1990-12-25 Union Carbide Corporation Process for forming a metal boride coating on a carbonaceous substrate
GB2427619A (en) * 2004-08-31 2007-01-03 Smith International Protective coating for a drill bit

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012238A (en) * 1973-08-10 1977-03-15 Hughes Tool Company Method of finishing a steel article having a boronized and carburized case
US3946817A (en) * 1974-12-23 1976-03-30 Hughes Tool Company Differentially carburized rock bit cutter
US4108692A (en) * 1975-01-13 1978-08-22 Smith International, Inc. Rock bit roller cutter and method therefor
US4188242A (en) * 1975-10-16 1980-02-12 Hughes Tool Company Combination carburizing and boronizing methods
US4249621A (en) * 1979-03-22 1981-02-10 Smith International, Inc. Friction bearing rock bit and segment
US4848476A (en) * 1980-03-24 1989-07-18 Reed Tool Company Drill bit having offset roller cutters and improved nozzles
US4826401A (en) * 1981-07-02 1989-05-02 Tmt Research Development Inc. Centrifugal pump
US4495006A (en) * 1983-10-31 1985-01-22 Dresser Industries, Inc. Borocarburizing ferrous substrates
US4495005A (en) * 1983-10-31 1985-01-22 Dresser Industries, Inc. Carbosiliconizing ferrous substrates
US4679640A (en) * 1986-02-21 1987-07-14 Dresser Industries, Inc. Method for case hardening rock bits and rock bits formed thereby
US4660444A (en) * 1986-06-09 1987-04-28 Dresser Industries, Inc. Hardening of selected areas of an earth boring rockbit
US5455068A (en) * 1994-04-28 1995-10-03 Aves, Jr.; William L. Method for treating continuous extended lengths of tubular member interiors
US5492186A (en) * 1994-09-30 1996-02-20 Baker Hughes Incorporated Steel tooth bit with a bi-metallic gage hardfacing
US5921330A (en) * 1997-03-12 1999-07-13 Smith International, Inc. Rock bit with wear-and fracture-resistant hardfacing
US6478887B1 (en) * 1998-12-16 2002-11-12 Smith International, Inc. Boronized wear-resistant materials and methods thereof
US20040031625A1 (en) * 2002-08-19 2004-02-19 Lin Chih C. DLC coating for earth-boring bit bearings
US7044243B2 (en) * 2003-01-31 2006-05-16 Smith International, Inc. High-strength/high-toughness alloy steel drill bit blank
US7931446B2 (en) * 2007-02-14 2011-04-26 X-Treme Aerospace Inc. Treatment of turbine blades to increase hardness
GB0808366D0 (en) * 2008-05-09 2008-06-18 Element Six Ltd Attachable wear resistant percussive drilling head
CN102131961B (en) * 2008-09-29 2012-12-19 埃克斯帕斯环球技术公司 Alloy coating apparatus and metalliding method
US8316679B2 (en) 2010-10-04 2012-11-27 Siemens Industry, Inc. Boronized laying pipe
US9140123B2 (en) * 2012-04-06 2015-09-22 Caterpillar Inc. Cutting head tool for tunnel boring machine
EP3004523B1 (en) 2013-05-30 2020-01-01 Frank's International, LLC Coating system for tubular gripping components
RU2522608C1 (en) * 2013-07-05 2014-07-20 Дмитрий Юрьевич Сериков Rock drill bit
RU2543823C1 (en) * 2014-02-05 2015-03-10 Дмитрий Юрьевич Сериков Rock drill bit
RU2567561C1 (en) * 2014-11-21 2015-11-10 Дмитрий Юрьевич Сериков Jet nozzled rock bitroller bit
US9988854B2 (en) * 2016-05-11 2018-06-05 Varel International Ind., L.P. Roller cone drill bit with improved erosion resistance
RU2725711C1 (en) * 2019-06-26 2020-07-03 Дмитрий Юрьевич Сериков Above-bit calibrator
CN112981306B (en) * 2021-02-10 2022-09-13 厦门钨业股份有限公司 High-wind-pressure down-the-hole drill bit and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979998A (en) * 1989-10-10 1990-12-25 Union Carbide Corporation Process for forming a metal boride coating on a carbonaceous substrate
GB2427619A (en) * 2004-08-31 2007-01-03 Smith International Protective coating for a drill bit
US7469618B2 (en) 2004-08-31 2008-12-30 Smith International, Inc. Maintaining carburized case during neutral to the core heat treatment processes

Also Published As

Publication number Publication date
IT1017922B (en) 1977-08-10
US3842921A (en) 1974-10-22
BR7402517A (en) 1975-12-02
SE397842B (en) 1977-11-21
SE7409634L (en) 1975-02-11
CA1003817A (en) 1977-01-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee