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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 the prior art, there is a method of ultrasonic cleaning of diamond powder suspension to enhance the nucleation rate of diamond on the surface of cemented carbide. Although this method will form diamond powder used as a seed crystal on the diamond substrate, the number of seed crystals Uncontrollable, and will produce a large amount of diamond powder suspension waste, serious waste

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

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Embodiment 1

[0029] see figure 1, Embodiment 1 of the present invention provides a diamond-coated tool, which consists 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 layer 14 on the upper surface and the diamond coating 15 formed on the surface of the diamond-like layer 14, wherein, in this embodiment, the cemented carbide substrate 11 is a tungsten-cobalt alloy single-edged blade. The thickness of the TiAlCN layer 13 is 400nm, and the thickness of the diamond-like carbon layer 14 is 25nm. Among them, 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 eventually affect the subsequent chemical vapor deposition method. T...

Embodiment 2

[0039] see figure 2 , the present embodiment provides a diamond-coated cutter, the diamond-coated cutter has a five-layer structure, and its main difference from the diamond-coated cutter provided in Embodiment 1 is that the diamond-coated cutter provided in this embodiment also includes a set In the CrAl layer 22 between the hard alloy substrate 11 and the TiAlCN layer 13, the thickness of the CrAl layer 22 is 200nm, and the CrAl layer 22 is mainly used as a transition layer to increase the thickness of the hard alloy substrate 11 and the TiAlCN layer. The binding force of the TiAlCN layer 13; in the present embodiment, the superhard alloy substrate 11 is a common alloy two-edged cutter, 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 cutting tool, including:

[0041] Cleani...

Embodiment 3

[0049] This embodiment provides a diamond-coated tool and a preparation method thereof, which are basically the same in structure and preparation method of the diamond-coated tool provided in Example 2, except that the thicknesses of each coating and the diamond layer are different; Specifically, 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 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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