TiMoCN gradient composite coated tool and preparation method thereof

A composite coating and cutting tool technology, which is applied in the field of TiMoCN gradient composite coating cutting tools and its preparation, to achieve the effects of increasing hardness and strength, improving hardness and wear resistance, and reducing friction coefficient

Inactive Publication Date: 2017-11-17
JINING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the performance and preparation methods of the existing carbonitride coating tools, and provide a TiMoCN gradient composite coating tool and its preparation method in combination with the advantages of the multi-component composite coating structure

Method used

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  • TiMoCN gradient composite coated tool and preparation method thereof

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Embodiment 1

[0021] The TiMoCN gradient composite coating tool and its preparation method of the present invention, the tool is a common milling blade, its base material is: cemented carbide M05, the coated tool is the tool base, Ti transition layer, TiMoC transition from the inside to the outside layer and TiMoCN gradient composite coating with gradient gradient of nitrogen content. The deposition method adopts the composite coating method of intermediate frequency magnetron sputtering and arc plating. During deposition, two intermediate frequency magnetron sputtering TiMoC composite targets and two arc plating Ti targets are used. First, arc plating is used to deposit the Ti transition layer, and then intermediate frequency magnetic The controlled sputtering method deposits the TiMoC transition layer and the TiMoCN gradient composite coating with a gradient nitrogen content. The specific steps are as follows:

[0022] (1) Pretreatment: Polish the surface of the tool base to remove impuri...

Embodiment 2

[0029] The TiMoCN gradient composite coating tool and its preparation method of the present invention, the tool is a circumferential milling cutter, the tool matrix material is: high-speed steel W18Cr4V, the coated tool is sequentially from the inside to the outside of the tool matrix, Ti transition layer, TiMoC transition layer and Gradient TiMoCN composite coating with gradient nitrogen content. The deposition method adopts the composite coating method of intermediate frequency magnetron sputtering and arc plating. During deposition, two intermediate frequency magnetron sputtering TiMoC composite targets and two arc plating Ti targets are used. First, the Ti transition layer is deposited by arc plating, and then the TiMoC transition layer and the TiMoCN gradient composite coating with a gradient nitrogen content are deposited by the intermediate frequency magnetron sputtering method. The specific steps are as follows:

[0030] (1) Pretreatment: Polish the surface of the tool...

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Abstract

The invention belongs to the field of cutting tools used for mechanical manufacturing and relates to a TiMoCN gradient composite coated tool and a preparation method thereof. According to a coating of the coated tool, the TiMoCN gradient coated tool is prepared through a composite film coating method combining medium-frequency magnetron sputtering and electric arc plating. The coated tool comprises a tool base body, a Ti transitional layer, a TiMoC transitional layer and the TiMoCN gradient composite coating in sequence from inside to outside, wherein the nitrogen content of the TiMoCN gradient composite coating is gradually varied in a gradient manner. According to the TiMoCN superhard carbon nitride compound coating, two types of metal, namely Ti and Mo, are added to the coating at the same time, the content of nitrogen serving as a structural constitution of the coating is gradually varied in the gradient manner, and therefore cutting machining performance of the tool can be improved. The coated tool has the beneficial effects of being quite high in hardness and strength, low in surface friction coefficient, good in diffusion wear resistance and excellent in frictional wear resistance. In the cutting process, by means of the tool, friction and cutting chip bonding generated in the cutting process can be reduced; the cutting force can be reduced by 30% or above, and the cutting temperature can be lowered by 30% or above; and the service life of the tool can be prolonged by 50% or above, and durability can be improved by 50% or above.

Description

technical field [0001] The invention belongs to the field of mechanically manufacturing metal cutting tools, in particular to a TiMoCN gradient composite coating tool and a preparation method thereof. Background technique [0002] Modern metal cutting requires cutting tools to have excellent characteristics such as high cutting speed, high feed rate, long life, and high precision. As traditional tool materials, high-speed steel or hard alloy is becoming more and more difficult to meet the development needs of modern machining industry. Therefore, tool surface coating technology came into being. Tool surface coating technology is a material surface treatment technology developed in recent decades. Under proper technological conditions, the coating has high hardness, low friction coefficient, and good bonding force with the base material, so the service life of metal cutting tools can be greatly improved. At present, the use of coated tools in industrially developed countri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/16C23C14/18C23C14/35C23C14/32C23C28/00
CPCC23C14/0635C23C14/0036C23C14/0664C23C14/16C23C14/18C23C14/325C23C14/352C23C28/322C23C28/341C23C28/347C23C28/42
Inventor 宋文龙马育栋王首军
Owner JINING UNIV
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