Abstract: The invention relates to a rock-cutting tool and a method for manufacturing this tool, which comprises knives comprising a layer of polycrystalline synthetic diamond (PSD), a diamond impregnation layer with diamond particles and bonding cobalt, characterized in that the PSD layer is supported directly, along a planar interface, on the diamond impregnation layer whose interface surface is planar by machining and with which the diamond particles are flush.
Abstract: The method involves a substrate 21 near which reagents 25 are provided. Pump (26) and Raman (27) photons make it possible to create a stimulated Raman emission during the synthesis (29) of the material. The Raman emission can be Stokes or anti-Stokes. In one embodiment of the invention, the zone where the synthesis (29) occurs is in an optical cavity and Raman photons (27) emitted by the Raman emission are reoriented toward the zone where the synthesis (29) occurs. In another embodiment of the invention, the zone where the synthesis (29) occurs is not in an optical cavity, and a stream of Raman photons (27) is created in an outside optical cavity before being sent toward the zone where the synthesis (29) occurs. The synthesis (29) preferably involves a CVD method or solidification by the Czochralski method.
Type:
Grant
Filed:
January 16, 2017
Date of Patent:
October 20, 2020
Assignee:
DIAROTECH S.A.
Inventors:
Horacio J. Tellez Oliva, Alain Roch, Etienne Lamine
Abstract: The method involves a substrate 21 near which reagents 25 are provided. Pump (26) and Raman (27) photons make it possible to create a stimulated Raman emission during the synthesis (29) of the material. The Raman emission can be Stokes or anti-Stokes. In one embodiment of the invention, the zone where the synthesis (29) occurs is in an optical cavity and Raman photons (27) emitted by the Raman emission are reoriented toward the zone where the synthesis (29) occurs. In another embodiment of the invention, the zone where the synthesis (29) occurs is not in an optical cavity, and a stream of Raman photons (27) is created in an outside optical cavity before being sent toward the zone where the synthesis (29) occurs. The synthesis (29) preferably involves a CVD method or solidification by the Czochralski method.
Type:
Application
Filed:
January 16, 2017
Publication date:
January 24, 2019
Applicant:
DIAROTECH S.A.
Inventors:
Horacio J. TELLEZ OLIVA, Alain ROCH, Etienne LAMINE
Abstract: Stabilizer-reamer for drilling string characterized in that it comprises a mixture of diamond impregnated inserts, the mixture comprising cutting diamond impregnated inserts and wear resistant diamond impregnated inserts, said wear resistant diamond impregnated inserts having smaller diamond grain size and higher diamond concentration than said cutting diamond impregnated inserts.
Type:
Application
Filed:
May 20, 2015
Publication date:
July 13, 2017
Applicants:
DIAROTECH S.A., AURORA BIT CONSULTANCY LTD
Inventors:
Robert DELWICHE, Harrie OORT, Nicholas BIGGS, Etienne LAMINE