Surface-coated cutting tool
US-9211588-B2 · Dec 15, 2015 · US
Surface coating cutting tool
US9440293B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9440293-B2 |
| Application number | US-201314383028-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 5, 2013 |
| Priority date | Mar 5, 2012 |
| Publication date | Sep 13, 2016 |
| Grant date | Sep 13, 2016 |
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Abstract
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A surface-coated cutting tool with a body and hard coating layer is provided. (a) The hard coating layer is made of a complex nitride layer of Al and Cr. (b) The hard coating layer deposited on a region from a cutting edge to a location 100 μm from the cutting edge toward an opposite side thereof has a granular crystal structure. The average grain size of granular crystals on a surface of the hard coating layer on the region is 0.2-0.5 μm. The average grain size of granular crystals at an interface between the cutting tool body and the hard coating layer on the region is smaller than the average grain size on the surface the hard coating layer in an extent of 0.02-0.1 μm. The crystal grain size length ratio of crystal grains whose size is 0.15-20% or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A surface-coated cutting tool comprising: a cutting tool body made of tungsten carbide-based cemented carbide; and a hard coating layer that has an average thickness of 2 μm to 10 μm and is vapor-deposited on a surface of the cutting tool body, wherein the hard coating layer is made of a complex nitride layer of Al and Cr, a Cr content with respect to a total amount of Al and Cr being 0.2 to 0.5 in atomic ratio; a part of the hard coating layer,…
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Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
- C23C14/0641Primary
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US9440293B2 cover?
- A surface-coated cutting tool with a body and hard coating layer is provided. (a) The hard coating layer is made of a complex nitride layer of Al and Cr. (b) The hard coating layer deposited on a region from a cutting edge to a location 100 μm from the cutting edge toward an opposite side thereof has a granular crystal structure. The average grain size of granular crystals on a surface of the h…
- Who is the assignee on this patent?
- Mitsubishi Materials Corp
- What technology area does this patent fall under?
- Primary CPC classification C23C14/0641. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 13 2016 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).