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Composite coating tool and preparation method thereof

A composite coating and cutting tool technology, which is applied in the field of composite coating cutting tools and its preparation, can solve the problems that the cutting edge cannot continue to work, the thermal expansion coefficient is very different, and it is not conducive to environmental protection, etc., so as to facilitate popularization and application, increase the hardness value, improve The effect of processing strength

Active Publication Date: 2020-04-14
FUNIK ULTRAHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thermal expansion coefficients of the cemented carbide substrate and the diamond coating are very different, resulting in weak interfacial bonding between the substrate and the coating. Current research focuses on how to improve the interfacial bonding between the substrate and the diamond coating.
[0003] Diamond-coated cemented carbide products are mainly used as cutting tools, but since ferrous metals and Group VIII element metals such as Co and Ni are solvents of C in the molten state, during machining, the local high temperature makes the carbon atoms of diamond dissolve into Cutting edges of diamond and diamond-related coated products in metal lattices will no longer work
By increasing the cutting fluid, the temperature of the diamond-coated tool cutting edge is relatively lower when processing the workpiece, so that the diamond-coated tool can process ferrous metals, and due to the characteristics of high hardness and high strength, the effect is excellent, but because the added cutting fluid will affect the environment Cause adverse effects, not conducive to green environmental protection

Method used

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  • Composite coating tool and preparation method thereof

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Effect test

Embodiment 1

[0039] The composite coating tool of the present embodiment, as figure 1 As shown, it includes a tool substrate 1 and a diamond layer 2 arranged in sequence from the surface of the tool substrate, a titanium carbide (TiC) transition layer 3, a titanium metal layer 4 and a nitride layer 5; the thickness of the diamond layer is 4 μm, and the titanium carbide transition layer The thickness of the layer is 0.01 μm, the thickness of the titanium metal layer is 0.01 μm, and the thickness of the nitride layer is 3 μm; the nitride layer is composed of nitride, and the nitride is Ti 2 Si 0.1 al 2 N x .

[0040] The preparation method of the composite coated cutting tool of the present embodiment comprises the following steps:

[0041] 1) Mix potassium ferricyanide, hydrogen oxidant and deionized water according to the mass ratio of 1:1:10 to obtain an alkali wash, then put the tool matrix into the alkali wash for ultrasonic treatment for 25 minutes, take it out, put it in Ultrason...

Embodiment 2

[0050] The composite coated cutter of the present embodiment comprises a cutter substrate and a diamond layer arranged outwards from the cutter substrate surface, a titanium carbide (TiC) transition layer, a titanium metal layer and a nitride layer; the thickness of the diamond layer is 8 μm, and the titanium carbide The thickness of the transition layer is 0.05 μm, the thickness of the titanium metal layer is 0.1 μm, and the thickness of the nitride layer is 4 μm; the nitride layer is composed of nitride, and the nitride is Ti 2 Si 0.1 al 3 N x .

[0051] The preparation method of the composite coated cutting tool of the present embodiment comprises the following steps:

[0052] 1) Mix potassium ferricyanide, hydroxide and deionized water according to the mass ratio of 1:0.8:8 to obtain an alkali wash, then put the tool matrix into the alkali wash for ultrasonic treatment for 25 minutes, take it out, and put it in Ultrasonic treatment in deionized water for 3 minutes for ...

Embodiment 3

[0061] The composite coated cutter of the present embodiment comprises a cutter substrate and a diamond layer arranged outwards from the cutter substrate surface, a titanium carbide (TiC) transition layer, a titanium metal layer and a nitride layer; the thickness of the diamond layer is 12 μm, and the titanium carbide The thickness of the transition layer is 0.08 μm, the thickness of the titanium metal layer is 0.13 μm, and the thickness of the nitride layer is 5 μm; the nitride layer is composed of nitride, and the nitride is Ti 2 Si 0.3 al 3 N x .

[0062] The preparation method of the composite coated cutting tool of the present embodiment comprises the following steps:

[0063] 1) Mix potassium ferricyanide, hydrogen oxidant and deionized water according to the mass ratio of 1:1.3:13 to obtain an alkali lotion, then put the tool matrix into the alkali lotion for ultrasonic treatment for 25 minutes, take it out, and put it in Ultrasonic treatment in deionized water for ...

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Abstract

The invention relates to a composite coated cutter and a preparation method thereof, and belongs to the technical field of composite coated cutters. The composite coated cutter provided by the invention comprises a cutter basal body as well as a diamond layer and a nitride layer which are sequentially arranged on the cutter basal body from the surface to the outside. The composite coated cutter provided by the invention has the advantages that the nitride layer is arranged outside the diamond layer, the red hardness of nitride is utilized to improve the high temperature resistance and corrosion resistance of the composite coating cutter; the diamond does not bond with cast iron, Group VIII elemental metals and alloys thereof, so that the processing performances of the diamond coating and the nitride coating on cast iron, ferrous metals, Group VIII elemental metals and alloys thereof are effectively promoted.

Description

technical field [0001] The invention relates to a composite coating tool and a preparation method thereof, belonging to the technical field of composite coating tools. Background technique [0002] Conventional cemented carbide, one of the main materials for machining tools and wear-resistant parts, has become more and more difficult to meet its development requirements. The successful development and application of diamond low-pressure chemical vapor deposition method provides an important foundation for the research and development of diamond-coated cemented carbide composites. Products lay the groundwork. Compared with diamond single crystal and diamond composite materials, diamond-coated cemented carbide products are not only low in cost and have smaller shape limitations, but also have comparable performance to the former two. However, the thermal expansion coefficients of the cemented carbide substrate and the diamond coating are very different, resulting in weak inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C16/02C23C16/27C23C14/02C23C14/06C23C14/18C23C14/35C23C28/00
CPCC23C14/0036C23C14/021C23C14/025C23C14/0641C23C14/185C23C14/35C23C16/0227C23C16/271C23C28/32C23C28/347
Inventor 李翠张敏捷
Owner FUNIK ULTRAHARD MATERIAL