SiZrCN gradient composite coating cutter and preparation method thereof

A composite coating and cutting tool technology, applied in the coating, metal material coating process, ion implantation plating, etc., to achieve high hardness, excellent resistance to plastic deformation, and improved service life

Active Publication Date: 2017-09-19
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 SiZrCN gradient composite coating tool and its preparation method in combination with the advantages of the multi-component composite coating structure

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  • SiZrCN gradient composite coating cutter and preparation method thereof

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Embodiment 1

[0021] The SiZrCN 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 P20, the coated tool from the inside to the outside is the tool base, Ti transition layer, SiZrC transition layer and SiZrCN gradient composite coating with gradient gradient of nitrogen content. The composite coating method of unbalanced magnetron sputtering and arc plating is used for deposition, and two unbalanced magnetron sputtering SiZrC composite targets and two arc plating Ti targets are used. First, the Ti transition layer is deposited by arc plating, and then the SiZrC transition layer and the SiZrCN gradient composite coating with a gradient nitrogen content are deposited by the unbalanced magnetron sputtering method. The specific steps are as follows:

[0022] (1) Pretreatment: Polish the surface of the tool base to remove surface oil, rust and other impurities, then place them in alcohol a...

Embodiment 2

[0029] The present invention SiZrCN gradient composite coating tool and its preparation method, the tool is a common face milling cutter, the tool matrix material is: high-speed steel W18Cr4V, the coated tool is the tool matrix, Ti transition layer, SiZrC transition layer from inside to outside in sequence and SiZrCN gradient composite coating with gradient nitrogen content. The deposition method is a composite coating method of unbalanced magnetron sputtering and arc plating. Two unbalanced magnetron sputtering SiZrC composite targets and two arc plating Ti targets are used for deposition. The Ti transition layer is firstly deposited by arc plating, and then The unbalanced magnetron sputtering method is used to deposit the SiZrC transition layer and the SiZrCN gradient composite coating with a gradient nitrogen content gradient. The specific steps are as follows:

[0030] (1) Pretreatment: Polish the surface of the tool base to remove surface oil, rust and other impurities, t...

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Abstract

The invention belongs to the field of mechanical manufacture cutting cutters, and in particular relates to a SiZrCN gradient composite coating cutter and preparation method thereof. The coating is the SiZrCN gradient composite coating prepared by adopting a composite coating method of unbalanced magnetron sputtering and electric arc plating; the surface of the coating cutter is SiZrCN gradient composite coating with gradually-changed gradient of nitrogen content, a Ti transition layer and a SiZrC transition layer are sequentially arranged between a cutter base body and the coating. By adopting the SiZrCN ultra-hard carbon-nitrogen compound coating, because two metals including Si and Zr are added in the coating at the same time, the nitrogen content of the coating structure component is gradually changed in a gradient manner, so that the cutting machining performance of the cutter can be improved. The coating has high hardness and heat stability, and also has good diffusion prevention and wear prevention performances, good plastic deformation resistance ability and excellent friction and wear resistance property. In the cutting process, the cutter can effectively prevent the occurrence of cracking of cutting edges and hot cracks, guarantee the machining surface quality of the workpieces, and prolong the service life of the cutter by more than 70%.

Description

technical field [0001] The invention belongs to the field of machine-made metal cutting tools, in particular to a SiZrCN 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 countries has account...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/02C23C14/06
CPCC23C14/0036C23C14/022C23C14/025C23C14/0635C23C14/0664C23C14/352
Inventor 宋文龙马育栋王首军
Owner JINING UNIV
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