The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1976
Filed:
May. 23, 1975
Mark Simonovich Drui, Leningrad, S;
Rima Samuilovna Ovseevich, Leningrad, S;
Gennady Afanasievich Senkin, Leningrad, S;
Other;
Abstract
A bond used in the manufacture of abrasive tools containing 3 - 75 wt. -% of copper, 15 - 90 wt.-% of chromium chloride; 0.01 - 10 wt.-% of a metal selected from the group including titanium, vanadium, chromium, zirconium, niobium, molybdenum, tungsten; 1 - 30 wt.-% of a low-melting metal; 2 - 30 wt.-% of the metal belonging to the iron subgroup of VIII group of the periodic chart. The employment of the bond according to the invention, for example in the manufacture of drill bits from an abrasive material based on cube boron nitride has made it possible to drill rocks of VIII - IX categories of drilling capacity at a drill speed and bit meterage exceeding 1.5 - 2 times the drill speed and bit meterage that have formerly been attained with the use of drill bits made of diamond with a bond containing tungsten carbide. While drilling rocks of VI - VIII categories of drilling capacity the bits made from cube boron nitride with the bond according to the invention surpass the carbide-faced bits, i.e. bits made by embedding hard-alloy cutting elements into, a steel body by 1.5 times with respect to drill speed and up to 5 - 6 times with respect to bit meterage.