Dense packing particle size distribution for pdc cutters
US-2015375366-A1 · Dec 31, 2015 · US
EDM cuttable, high cBN content solid PCBN compact
US9028573B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9028573-B2 |
| Application number | US-201113820744-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 8, 2011 |
| Priority date | Sep 8, 2010 |
| Publication date | May 12, 2015 |
| Grant date | May 12, 2015 |
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Abstract
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The present disclosure relates to cubic boron nitride (cBN) cutting elements that have high cBN content and that are cuttable by electric discharge machining (EDM). A cutting element according to an embodiment includes a self-sintered polycrystalline cubic boron nitride (PCBN) compact, having a first phase of cubic boron nitride (cBN) particles and a ceramic binder phase with titanium compounds. The first phase occupies greater than 80% by volume of the self-sintered PCBN compact. The self-sintered PCBN compact has an electrical conductivity sufficient to be cuttable by electrical discharge machining.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of forming a self-sintered polycrystalline cubic boron nitride (PCBN) cutting element comprising: mixing a plurality of cBN particles with a binder precursor to form a mixture, the mixture comprising over 80% by volume cBN particles; HPHT sintering the mixture without substrate support, to form a self-sintered PCBN compact; and cutting the self-sintered PCBN compact by electrical discharge machining; in which the binder precursor comprises one o…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9028573B2 cover?
- The present disclosure relates to cubic boron nitride (cBN) cutting elements that have high cBN content and that are cuttable by electric discharge machining (EDM). A cutting element according to an embodiment includes a self-sintered polycrystalline cubic boron nitride (PCBN) compact, having a first phase of cubic boron nitride (cBN) particles and a ceramic binder phase with titanium compounds…
- Who is the assignee on this patent?
- Bao Yahua, Horman Scott, Yao Xian, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification B24D3/06. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 12 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).