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FI900532A7 - Method for increasing the strength of an element used in impact drilling - Google Patents

Method for increasing the strength of an element used in impact drilling Download PDF

Info

Publication number
FI900532A7
FI900532A7 FI900532A FI900532A FI900532A7 FI 900532 A7 FI900532 A7 FI 900532A7 FI 900532 A FI900532 A FI 900532A FI 900532 A FI900532 A FI 900532A FI 900532 A7 FI900532 A7 FI 900532A7
Authority
FI
Finland
Prior art keywords
strength
increasing
element used
impact drilling
drilling
Prior art date
Application number
FI900532A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI900532A0 (en
Inventor
Anders Rystedt
Original Assignee
Sandvik 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 Sandvik Ab filed Critical Sandvik Ab
Publication of FI900532A0 publication Critical patent/FI900532A0/en
Publication of FI900532A7 publication Critical patent/FI900532A7/en

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
    • E21B10/56—Button-type inserts
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/08—Modifying the physical properties of iron or steel by deformation by cold working of the surface by burnishing or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
FI900532A 1989-02-02 1990-02-02 Method for increasing the strength of an element used in impact drilling FI900532A7 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8900358A SE8900358L (en) 1989-02-02 1989-02-02 PROCEDURES TO ACHIEVE HALF FASTENING SEARCH ON AN ITEM FOR BEAUTIFUL DRILLING

Publications (2)

Publication Number Publication Date
FI900532A0 FI900532A0 (en) 1990-02-02
FI900532A7 true FI900532A7 (en) 1990-08-03

Family

ID=20374924

Family Applications (1)

Application Number Title Priority Date Filing Date
FI900532A FI900532A7 (en) 1989-02-02 1990-02-02 Method for increasing the strength of an element used in impact drilling

Country Status (7)

Country Link
EP (1) EP0381648A1 (en)
JP (1) JPH02298478A (en)
AU (1) AU4860790A (en)
BR (1) BR9000355A (en)
CA (1) CA2009179A1 (en)
FI (1) FI900532A7 (en)
SE (1) SE8900358L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401630B (en) * 1992-05-25 1996-10-25 Plansee Tizit Gmbh METHOD FOR PRODUCING MOLDED PARTS WITH ROLLED SURFACES OF HIGH FIT ACCURACY
NL1023342C2 (en) * 2003-05-05 2004-11-09 Skf Ab Method for treating the surface of a machine element.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161155A6 (en) * 1970-11-23 1973-07-06 Stephanois Rech

Also Published As

Publication number Publication date
SE8900358D0 (en) 1989-02-02
SE8900358L (en) 1990-08-03
EP0381648A1 (en) 1990-08-08
CA2009179A1 (en) 1990-08-02
AU4860790A (en) 1990-08-09
BR9000355A (en) 1990-12-04
FI900532A0 (en) 1990-02-02
JPH02298478A (en) 1990-12-10

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Legal Events

Date Code Title Description
FD Application lapsed
MM Patent lapsed

Owner name: SANDVIK AB