GB8726868D0 - Drill bit - Google Patents

Drill bit

Info

Publication number
GB8726868D0
GB8726868D0 GB878726868A GB8726868A GB8726868D0 GB 8726868 D0 GB8726868 D0 GB 8726868D0 GB 878726868 A GB878726868 A GB 878726868A GB 8726868 A GB8726868 A GB 8726868A GB 8726868 D0 GB8726868 D0 GB 8726868D0
Authority
GB
United Kingdom
Prior art keywords
drill bit
drill
bit
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.)
Granted
Application number
GB878726868A
Other versions
GB2212533A (en
GB2212533B (en
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.)
Boart Longyear Ltd
Original Assignee
Boart Hardmetals Europe Ltd
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 Boart Hardmetals Europe Ltd filed Critical Boart Hardmetals Europe Ltd
Priority to GB8726868A priority Critical patent/GB2212533B/en
Publication of GB8726868D0 publication Critical patent/GB8726868D0/en
Priority to DE19883839154 priority patent/DE3839154C2/en
Publication of GB2212533A publication Critical patent/GB2212533A/en
Application granted granted Critical
Publication of GB2212533B publication Critical patent/GB2212533B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Earth Drilling (AREA)
GB8726868A 1987-11-17 1987-11-17 A drill bit Expired - Lifetime GB2212533B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8726868A GB2212533B (en) 1987-11-17 1987-11-17 A drill bit
DE19883839154 DE3839154C2 (en) 1987-11-17 1988-11-17 drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8726868A GB2212533B (en) 1987-11-17 1987-11-17 A drill bit

Publications (3)

Publication Number Publication Date
GB8726868D0 true GB8726868D0 (en) 1987-12-23
GB2212533A GB2212533A (en) 1989-07-26
GB2212533B GB2212533B (en) 1991-07-10

Family

ID=10627081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8726868A Expired - Lifetime GB2212533B (en) 1987-11-17 1987-11-17 A drill bit

Country Status (2)

Country Link
DE (1) DE3839154C2 (en)
GB (1) GB2212533B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9308443U1 (en) * 1993-06-05 1993-08-19 Bilfinger + Berger Bauaktiengesellschaft, 68165 Mannheim Solid core bit for making cased earth bores
DE29907492U1 (en) * 1999-04-29 2000-09-28 Wirth Co Kg Masch Bohr Soil loosening tool
SE522152C2 (en) * 2002-05-17 2004-01-20 Sandvik Ab Rock drill product and method to cure this
US7905301B2 (en) 2007-07-02 2011-03-15 Baker Hughes Incorporated Earth boring drill bits made from a low-carbon, high-molybdenum alloy

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1172672A (en) * 1965-12-02 1969-12-03 Padley & Venables Ltd Improvements relating to the Manufacture of Percussive Drill Rods.

Also Published As

Publication number Publication date
GB2212533A (en) 1989-07-26
GB2212533B (en) 1991-07-10
DE3839154A1 (en) 1989-06-01
DE3839154C2 (en) 1995-10-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee