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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.:

US 9943911 B1

PDFFull Text
Date of Patent:
Apr. 17, 2018

Filed:

Mar. 20, 2015

Surface-coated boron nitride sintered body tool

Applicant:

Sumitomo Electric Hardmetal Corp., Itami-shi, JP;

Inventors:

Yusuke Matsuda, Itami, JP;

Katsumi Okamura, Itami, JP;

Kenta Sano, Itami, JP;

Nozomi Tsukihara, Itami, JP;

Makoto Setoyama, Itami, JP;

Assignee:

Sumitomo Electric Hardmetal Corp., Itami-shi, JP;

Attorneys:

Venable LLP

Michael A. Sartori

Kerri M. Patterson

Primary Examiner:

Archene Turner

Int. Cl.
CPC ...
B23B 27/14 (2006.01); C04B 41/00 (2006.01); C04B 41/50 (2006.01); C04B 41/52 (2006.01); C04B 41/89 (2006.01); C04B 35/5831 (2006.01); C23C 14/00 (2006.01); C23C 14/02 (2006.01); C23C 14/06 (2006.01); C23C 14/32 (2006.01); C04B 35/626 (2006.01); C04B 35/63 (2006.01); C04B 35/645 (2006.01); C22C 26/00 (2006.01);
U.S. Cl.
CPC ...
B23B 27/148 (2013.01); C04B 35/5831 (2013.01); C04B 35/6261 (2013.01); C04B 35/62645 (2013.01); C04B 35/6303 (2013.01); C04B 35/645 (2013.01); C04B 41/009 (2013.01); C04B 41/5063 (2013.01); C04B 41/5068 (2013.01); C04B 41/52 (2013.01); C04B 41/89 (2013.01); C23C 14/0021 (2013.01); C23C 14/022 (2013.01); C23C 14/0641 (2013.01); C23C 14/325 (2013.01); B23B 2224/24 (2013.01); B23B 2226/125 (2013.01); B23B 2228/105 (2013.01); C04B 2235/3813 (2013.01); C04B 2235/3865 (2013.01); C04B 2235/3886 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/661 (2013.01); C04B 2235/783 (2013.01); C04B 2235/785 (2013.01); C04B 2235/786 (2013.01); C04B 2235/80 (2013.01); C04B 2235/9607 (2013.01); C22C 26/00 (2013.01);
Abstract

A surface-coated boron nitride sintered body tool is provided, in which a cutting edge portion includes a compound sintered body and a coating layer. The compound sintered body includes cBN particles. The compound sintered body includes 45-80 vol % of cBN particles. A first particle size distribution curve of the cBN particles has one or more peaks in a range in which a particle size is 0.1-0.7 μm. A second particle size distribution curve of the cBN particles has a first peak having a maximum peak height in a range in which the particle size is 2.0-7.0 μm. An integral value ratio (I/I×100) is 1-20, in the second particle size distribution curve, the integral value Ibeing in the range in which the particle size is 0.1-0.7 μm, and the integral value Ibeing in an entire range.

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