Diamond coating tool and manufacturing method thereof

A diamond coating and diamond layer technology, applied in metal material coating process, coating, superimposed layer plating and other directions, can solve a large number of diamond fine powder suspension, acid-base waste liquid environmental pollution, uncontrollable number of crystal seeds and other problems, to achieve the effect of improving cutting performance and service life, good cutting performance, and easy industrial production.

Inactive Publication Date: 2019-08-30
HENAN FULAIGE ULTRAHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This invention patent mainly uses the chemical erosion liquid cleaning method to treat the cemented carbide substrate, the cost is low, and it is easy to be applied industrially. However, the chemical erosion liquid cleaning method usually uses acid and alkali liquid for cleaning, and a large amount of acid and alkali waste liquid is produced. Pollution
[0004] In addition, in th

Method used

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  • Diamond coating tool and manufacturing method thereof
  • Diamond coating tool and manufacturing method thereof
  • Diamond coating tool and manufacturing method thereof

Examples

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Example Embodiment

[0028] Example 1

[0029] See figure 1 , Embodiment 1 of the present invention provides a diamond-coated tool consisting of a four-layer structure, specifically including a cemented carbide substrate 11, a TiAlCN layer 13 formed on the upper surface of the cemented carbide substrate 11, and a TiAlCN layer deposited on the TiAlCN layer. The diamond-like carbon layer 14 on the upper surface and the diamond coating 15 formed on the surface of the diamond-like layer 14. In this embodiment, the cemented carbide substrate 11 is a tungsten-cobalt alloy single-edged blade. The thickness of the TiAlCN layer 13 is 400 nm, and the thickness of the diamond-like carbon layer 14 is 25 nm. Wherein, the TiAlCN layer 13 mainly shields the Co element in the cemented carbide substrate 11 and forms a compound with the Co element to prevent the Co element from diffusing to the upper surface of the cemented carbide substrate 11, so as not to ultimately affect the subsequent chemical vapor deposition m...

Example Embodiment

[0038] Example 2

[0039] See figure 2 This embodiment provides a diamond-coated tool. The diamond-coated tool has a five-layer structure. The main difference between the diamond-coated tool and the diamond-coated tool provided in Embodiment 1 is that the diamond-coated tool provided in this embodiment also includes The CrAl layer 22 between the cemented carbide substrate 11 and the TiAlCN layer 13 has a thickness of 200 nm. The CrAl layer 22 is mainly used as a transition layer to increase the cemented carbide substrate 11 and The bonding force of the TiAlCN layer 13; in this embodiment, the cemented carbide substrate 11 is a common alloy two-edged tool, the thickness of the TiAlCN layer 13 is 300nm, and the thickness of the diamond-like layer 14 is 20nm, so The thickness of the diamond layer 15 is 8 μm.

[0040] This embodiment also provides a method for preparing the above-mentioned diamond-coated tool, including:

[0041] Cleaning the cemented carbide substrate 11 Ultrasonic t...

Example Embodiment

[0048] Example 3

[0049] This embodiment provides a diamond-coated tool and a preparation method thereof. The structure and preparation method of the diamond-coated tool provided in Example 2 are basically the same. The main difference lies in the thickness of each plating layer and diamond layer; In this embodiment, the thickness of the CrAl layer is 250nm and the deposition time is 15min; the thickness of the TiAlCN layer is 200nm and the deposition time is 10min; the thickness of the diamond-like layer is 10nm and the deposition time is 10min; the diamond The thickness of the layer is 10 μm, and the reaction time is 20 h.

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Abstract

The invention provides a diamond coating tool. The diamond coating tool comprises a hard alloy base body, a TiAlCN layer formed on the hard alloy base body, a diamond-like layer deposited on the surface of the TiAlCN layer and a diamond coating formed on the surface of the diamond-like layer. The invention further provides a manufacturing method for the diamond coating tool, and the manufacturingmethod comprises the following steps: cleaning the hard alloy base body; performing film coating treatment on the hard alloy base body to form the TiAlCN layer and the diamond-like layer; and adoptinga chemical gas-phase deposition method to deposit the diamond coating on the surface of the diamond-like layer. The TiAlCN layer in the diamond coating tool is used as a Co element shielding layer and the diamond-like layer is taken as a diamond seed crystal layer, so that bonding strength between the diamond coating and the hard alloy base body is strengthened, cutting performance of the diamondcoating tool is improved, and the service life of the diamond coating tool is prolonged. Besides, the diamond coating tool is easy for industrial production, and the manufacturing process is environmentally friendly.

Description

technical field [0001] The invention belongs to the field of superhard material coated cutting tools, in particular to a diamond coated cutting tool and a preparation method thereof. Background technique [0002] Diamond-coated tools have the advantages of extremely high hardness and wear resistance, low friction coefficient, high elastic modulus, high thermal conductivity, low thermal expansion coefficient, and low affinity with non-ferrous metals, and can be made into various complex geometric shapes , are widely used in various fields. Especially in the fields of processing non-ferrous metals and alloys, fiber-reinforced plastics, fiber-reinforced metals, graphite, ceramics and other new materials, diamond-coated tools have an advantage over high-speed tool steel and hard alloy tools. Diamond-coated tools are mainly made by depositing a certain thickness of diamond film on a cemented carbide substrate by chemical vapor deposition. The thickness of the diamond film coatin...

Claims

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Application Information

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IPC IPC(8): C23C28/04C23C14/06C23C14/16C23C14/32C23C14/35C23C16/02C23C16/27
CPCC23C14/0036C23C14/0605C23C14/0664C23C14/165C23C14/325C23C14/352C23C16/0272C23C16/271C23C16/274C23C28/044C23C28/30C23C28/343C23C28/347
Inventor 孔帅斐李翠李和鑫宜娟
Owner HENAN FULAIGE ULTRAHARD MATERIAL
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