NO892923L - Skjaereelementer for borkrone og borkrone med slike elementer. - Google Patents

Skjaereelementer for borkrone og borkrone med slike elementer.

Info

Publication number
NO892923L
NO892923L NO89892923A NO892923A NO892923L NO 892923 L NO892923 L NO 892923L NO 89892923 A NO89892923 A NO 89892923A NO 892923 A NO892923 A NO 892923A NO 892923 L NO892923 L NO 892923L
Authority
NO
Norway
Prior art keywords
elements
cutting
borrown
born
crown
Prior art date
Application number
NO89892923A
Other languages
English (en)
Other versions
NO892923D0 (no
Inventor
Kenneth William Jones
George Fyfe
Original Assignee
Smith International
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
Priority claimed from US07/221,410 external-priority patent/US4858707A/en
Application filed by Smith International filed Critical Smith International
Publication of NO892923D0 publication Critical patent/NO892923D0/no
Publication of NO892923L publication Critical patent/NO892923L/no

Links

Landscapes

  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
  • Milling Processes (AREA)

Abstract

Knast (30) med diamant, for rotasjonsborkrone (10) av skrapetypen, omfattende en tapp (32) med en indre ende og en i skjæreende. Skjæreenden har konveks eller sfærisk form, og er av polykrystallinsk diamantmateriale (40) . Det konvekse laget av diamant (42) er orientert i forhold til en akse i tappen med en negativ skrapevinkel fra O til omtrent 45°. Flere slike knaster (30) er montert i skjæreflaten (17) på en borkrone (10), for å skjære i en jordformasjon med minsket friksjon og god kjøling av den polykrystallinske diamant.
NO89892923A 1988-07-19 1989-07-17 Skjaereelementer for borkrone og borkrone med slike elementer. NO892923L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/221,410 US4858707A (en) 1988-07-19 1988-07-19 Convex shaped diamond cutting elements

Publications (2)

Publication Number Publication Date
NO892923D0 NO892923D0 (no) 1989-07-17
NO892923L true NO892923L (no) 1990-01-22

Family

ID=22827709

Family Applications (1)

Application Number Title Priority Date Filing Date
NO89892923A NO892923L (no) 1988-07-19 1989-07-17 Skjaereelementer for borkrone og borkrone med slike elementer.

Country Status (2)

Country Link
MX (1) MX168958B (no)
NO (1) NO892923L (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106382098A (zh) * 2016-11-25 2017-02-08 西南石油大学 一种旋转齿

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106382098A (zh) * 2016-11-25 2017-02-08 西南石油大学 一种旋转齿

Also Published As

Publication number Publication date
NO892923D0 (no) 1989-07-17
MX168958B (es) 1993-06-15

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