Coated tool and cutting tool including the same
US-2021107066-A1 · Apr 15, 2021 · US
Cutting tool
US12202051B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12202051-B2 |
| Application number | US-202318571261-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 22, 2023 |
| Priority date | Jun 22, 2023 |
| Publication date | Jan 21, 2025 |
| Grant date | Jan 21, 2025 |
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- Title
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Abstract
Official abstract text for this publication.
A cutting tool including a substrate and a coated film arranged on the substrate, in which the coated film includes a first layer positioned on the substrate, a second layer positioned on the first layer, and a third layer positioned on the second layer, the first layer is composed of titanium carbonitride, the second layer is composed of aluminum oxide, the third layer is composed of titanium carbonitride, a residual stress X of the first layer and a residual stress Y of the second layer satisfy a relationship of formula 1, and the residual stress Y of the second layer and a residual stress Z of the third layer satisfy a relationship of formula 2.
First claim
Opening claim text (preview).
The invention claimed is: 1. A cutting tool comprising a substrate and a coated film arranged on the substrate, wherein the coated film comprises a first layer positioned on the substrate, a second layer positioned on the first layer, and a third layer positioned on the second layer, wherein the first layer is composed of titanium carbonitride, wherein the second layer is composed of aluminum oxide, wherein the third layer is composed of titanium carbonitride, wherein a residual stress X of the first layer and a residual stress Y of the second layer satisfy a relationship of formula 1, wherein the residual stress Y of the second layer and a residual stress Z of the third layer satisfy a relationship of formula 2: X<Y formula 1 Z<Y formula 2, wherein the residual stress X of the first layer is −1.0 GPa or more and −0.3 GPa or less, wherein the residual stress Y of the second layer is −0.5 GPa or more and 0.1 GPa or less, wherein the residual stress Z of the third layer is −1.0 GPa or more and −0.3 GPa or less, wherein a thickness of the second layer is 3 μm or more and 15 μm or less, and wherein a thickness of the third layer is 2 μm or more and 4 μm or less. 2. The cutting tool according claim 1 , wherein a thickness of the first layer is 3 μm or more and 15 μm or less.
Assignees
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Classifications
with specified thickness · CPC title
on hard metal substrates · CPC title
coatings specially adapted for cutting tools or wear applications · CPC title
- C23C28/042Primary
including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides · CPC title
- B23B27/148Primary
Composition of the cutting inserts · CPC title
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- What does patent US12202051B2 cover?
- A cutting tool including a substrate and a coated film arranged on the substrate, in which the coated film includes a first layer positioned on the substrate, a second layer positioned on the first layer, and a third layer positioned on the second layer, the first layer is composed of titanium carbonitride, the second layer is composed of aluminum oxide, the third layer is composed of titanium …
- Who is the assignee on this patent?
- Sumitomo Electric Hardmetal Corp
- What technology area does this patent fall under?
- Primary CPC classification C23C28/042. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 21 2025 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).