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Surface-coated cutting tool and method for producing the same

A surface coating, cutting tool technology, applied in coating, turning equipment, tools for lathes, etc., can solve problems such as adverse effects on performance, reduce the post-treatment process of coating, high coating deposition efficiency, excellent The effect of wear resistance

Active Publication Date: 2021-07-30
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing related research, the prepared CVD-Ti 1-x Al x There is a high content of phases such as hexagonal AlN or amorphous carbon in the N coating, which adversely affects the performance

Method used

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  • Surface-coated cutting tool and method for producing the same
  • Surface-coated cutting tool and method for producing the same
  • Surface-coated cutting tool and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A surface-coated cutting tool of the present invention comprises a cemented carbide tool substrate and a multilayer coating coated on the surface of the tool substrate, the multilayer coating sequentially includes a TiN layer, an AlTiCN layer, a TiCO layer, Zr doped α-Al 2 o 3 layer and ZrN layer.

[0050] In this embodiment, the thickness of the TiN layer in the coating is 1.0 μm. The Al content ratio of the AlTiCN layer (stoichiometric coefficient x) x=0.91, the C content ratio (stoichiometric coefficient y) y=0, the longitudinal surface of the coating is a columnar crystal structure, the texture orientation value Tc(111) is 2.9, and the nano-hardness value 34GP, the thickness of the coating is 6.5μm. The thickness of the TiCO layer is 0.5 μm. Zr doped α-Al 2 o 3 layer is in AlCl 3 -CO 2 -HCl-H 2 S-H 2 Add ZrCl to the deposition atmosphere system 4 Atmosphere prepared, Zr doped α-Al 2 o 3 The Zr content in the coating is 0.22at%, and the Zr element is ZrO...

Embodiment 2

[0089] A surface-coated cutting tool of the present invention comprises a cemented carbide tool substrate and a multilayer coating coated on the surface of the tool substrate, the multilayer coating sequentially includes a TiN layer, an AlTiCN layer, a TiCO layer, α-Al 2 o 3 layer, Zr doped α-Al 2 o 3 layer, ZrC layer.

[0090] In this embodiment, the thickness of the TiN layer in the coating is 0.5 μm; the Al content ratio (stoichiometric coefficient x) x=0.84 of the AlTiCN layer, the C content ratio (stoichiometric coefficient y) y=0, and the longitudinal surface of the coating is columnar crystal structure, the texture orientation value Tc(111) is 2.0, the nanohardness value is 31GP, and the thickness of the coating is 8.0 μm. The thickness of the TiCO layer is 0.5 μm. α-Al 2 o 3 The thickness of the layer was 1.0 μm. Zr doped α-Al 2 o 3 layer is in AlCl 3 -CO 2 -HCl-H 2 S-H 2 Add ZrCl to the deposition atmosphere system 4 Atmosphere prepared, Zr doped α-Al ...

Embodiment 3

[0119] A surface-coated cutting tool of the present invention comprises a cemented carbide tool substrate and a multilayer coating coated on the surface of the tool substrate, the multilayer coating sequentially includes a TiN layer, an AlTiCN layer, a TiCO layer, Zr doped α-Al 2 o 3 Floor.

[0120] In this embodiment, the thickness of the TiN layer in the coating is 0.5 μm; the Al content ratio (metering coefficient x) x=0.86 of the AlTiCN layer, the C content ratio (metering coefficient y) y=0.01, and the longitudinal surface of the coating is columnar crystal Structure, the texture orientation value Tc(111) is 2.3, the nanohardness value is 32GP, the thickness of the coating is 4.0μm; the thickness of the TiCO layer is 0.5μm; Zr doped α-Al 2 o 3 layer is in AlCl 3 -CO 2 -HCl-H 2 S-H 2 Add ZrCl to the deposition atmosphere system 4 Atmosphere prepared, Zr doped α-Al 2 o 3 The Zr content in the coating is 0.59at%, and the Zr element is ZrO 2 Microcrystalline form e...

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Abstract

The invention discloses a surface-coated cutting tool and a preparation method thereof. The surface-coated cutting tool comprises a tool substrate and a multilayer coating covering the surface of the tool substrate. The multilayer coating at least includes an AlTiCN coating and a coating coated on AlTiCN Zr-containing surface coating on the coating, the Zr-containing surface coating comprises at least one layer of Zr-doped α-Al 2 o 3 coating. The preparation method includes successively preparing the tool substrate, the hard base layer, the AlTiCN coating, the hard layer, and the Zr-doped α-Al 2 o 3 Coatings and Zr-containing layers. The coated cutting tool of the present invention has cubic AlN phase with high Al content, high nanometer hardness, excellent wear resistance, chipping resistance and adhesion resistance, and is suitable for general cutting of steel, cast iron and stainless steel materials processing.

Description

technical field [0001] The invention belongs to the field of cutting tool coating preparation, and relates to a surface-coated cutting tool and a preparation method thereof, in particular to a cutting tool with a surface coating of a cubic AlN phase with high Al content and a preparation method thereof. Background technique [0002] The surface coating of the tool plays a key role in the improvement of tool performance and the advancement of cutting processing technology. It is an effective way to solve the properties of tool wear resistance, toughness, heat resistance, and anti-adhesion. Coated cutting tools have become modern tools. important sign. With the development of cutting processing technology, the performance requirements for cutting tools are also increasing, especially for general-purpose coated cutting tools with excellent wear resistance and good chipping resistance. The combined application of CVD multi-layer composite coatings can be designed in a multi-lay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B27/00C23C16/32C23C16/34C23C16/36C23C16/40C23C16/455
CPCB23B27/00B23B2228/10B23B2228/36C23C16/32C23C16/34C23C16/36C23C16/403C23C16/455
Inventor 瞿峻陈响明王社权温光华李秀萍
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD