Surface coated cutting tools
A multi-layer coated cutting tool with AlTiN, AlTiSiN, and AlCrSiCuN layers on a cubic boron nitride substrate addresses wear and chipping issues, providing enhanced durability in high-load cutting.
JP7807726B2Active Publication Date: 2026-01-28MITSUBISHI MATERIALS CORP
Patent Information
- Application Number
- JP2023507105
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-03-17
- Filing Date
- 2022-03-14
- Publication Date
- 2026-01-28
- Estimated Expiration
- 2042-03-14
Smart Images
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Figure 0007807726000002
Abstract
The present invention provides a coated tool, a substrate of which is a cBN sintered compact in which the average particle diameter of cBN particles is 2.5-6.0 µm and the content thereof is 40-70 vol%, a coating layer having an R of 0.1-1.5 µm and an average thickness of 1.0-5.0 µm has an A-layer, a B-layer, and a C-layer, the A-layer having an average composition of (Al1-xTix)N (0.35 ≤ x ≤ 0.60) and an average thickness tA of 0.1-1.0 µm, the B-layer having an average composition of (Al1-y-zTiySiz)N (0.35 ≤ y ≤ 0.60, 0.01 ≤ z ≤ 0.10) and an average thickness tB of 0.2-2.0 µm, the C-layer having an average composition of (Al1-a-b-cCraSibCuc)N (0.150 ≤ a ≤ 0.400, 0.050 ≤ b ≤ 0.200, 0.005 ≤ c ≤ 0.050) and an average thickness tC of 0.1-2.0 µm, tB / tA being 2.0-6.0, and R ≤ tC.
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Citation Information
Patent Citations
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