AT357500B - Vorrichtung zum erneuern verschlissener hart- metallstifte in bohrkronen - Google Patents

Vorrichtung zum erneuern verschlissener hart- metallstifte in bohrkronen

Info

Publication number
AT357500B
AT357500B AT457678A AT457678A AT357500B AT 357500 B AT357500 B AT 357500B AT 457678 A AT457678 A AT 457678A AT 457678 A AT457678 A AT 457678A AT 357500 B AT357500 B AT 357500B
Authority
AT
Austria
Prior art keywords
weared
renewing
hard metal
drill bits
metal pins
Prior art date
Application number
AT457678A
Other languages
English (en)
Other versions
ATA457678A (de
Original Assignee
Fagersta Ab
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 Fagersta Ab filed Critical Fagersta Ab
Publication of ATA457678A publication Critical patent/ATA457678A/de
Application granted granted Critical
Publication of AT357500B publication Critical patent/AT357500B/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • 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
    • E21B10/56—Button-type inserts
    • 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
    • E21B12/00—Accessories for drilling tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Milling Processes (AREA)
AT457678A 1977-06-28 1978-06-23 Vorrichtung zum erneuern verschlissener hart- metallstifte in bohrkronen AT357500B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7707478A SE406283B (sv) 1977-06-28 1977-06-28 Anordning for frileggade av nerslitna hardmetallstift i borrkronor

Publications (2)

Publication Number Publication Date
ATA457678A ATA457678A (de) 1979-12-15
AT357500B true AT357500B (de) 1980-07-10

Family

ID=20331713

Family Applications (1)

Application Number Title Priority Date Filing Date
AT457678A AT357500B (de) 1977-06-28 1978-06-23 Vorrichtung zum erneuern verschlissener hart- metallstifte in bohrkronen

Country Status (11)

Country Link
JP (1) JPS5417306A (de)
AT (1) AT357500B (de)
AU (1) AU3731878A (de)
BR (1) BR7804089A (de)
CA (1) CA1077921A (de)
DE (1) DE2826957A1 (de)
FR (1) FR2395809A1 (de)
GB (1) GB2000461B (de)
IE (1) IE47422B1 (de)
SE (1) SE406283B (de)
ZA (1) ZA783634B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941041C2 (de) * 1979-10-10 1981-07-09 Daimler-Benz Ag, 7000 Stuttgart Schweißpunktfräser

Also Published As

Publication number Publication date
JPS5417306A (en) 1979-02-08
CA1077921A (en) 1980-05-20
SE7707478L (sv) 1978-12-29
ATA457678A (de) 1979-12-15
IE781274L (en) 1978-12-28
GB2000461A (en) 1979-01-10
FR2395809B3 (de) 1981-03-06
IE47422B1 (en) 1984-03-07
ZA783634B (en) 1979-06-27
GB2000461B (en) 1982-01-06
BR7804089A (pt) 1979-01-16
DE2826957A1 (de) 1979-01-18
SE406283B (sv) 1979-02-05
FR2395809A1 (fr) 1979-01-26
AU3731878A (en) 1980-01-03

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee