BE481042A - - Google Patents

Info

Publication number
BE481042A
BE481042A BE481042DA BE481042A BE 481042 A BE481042 A BE 481042A BE 481042D A BE481042D A BE 481042DA BE 481042 A BE481042 A BE 481042A
Authority
BE
Belgium
Prior art keywords
cutting edge
chrome
tube
hexagonal
tungsten
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE481042A publication Critical patent/BE481042A/fr

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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Forging (AREA)
BE481042D BE481042A (de)

Publications (1)

Publication Number Publication Date
BE481042A true BE481042A (de)

Family

ID=128097

Family Applications (1)

Application Number Title Priority Date Filing Date
BE481042D BE481042A (de)

Country Status (1)

Country Link
BE (1) BE481042A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0561957A4 (en) * 1990-12-19 1994-09-14 Kennametal Inc Cold headed center vacuum drill bit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0561957A4 (en) * 1990-12-19 1994-09-14 Kennametal Inc Cold headed center vacuum drill bit
US5452628A (en) * 1990-12-19 1995-09-26 Kennametal Inc. Cold headed center vacuum drill bit

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