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Preparation method of textured coating for diamond tools based on micro-blocking method

A diamond cutting tool, diamond technology, applied in metal material coating process, coating, gaseous chemical plating and other directions, can solve the problems of difficult diamond processing, immature technology, etc., achieve high growth efficiency and success rate, and the method is simple and fast , the effect of low cost

Active Publication Date: 2019-05-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0002] As we all know, the micro-texture on the surface of the tool has the functions of reducing friction and wear resistance, anti-sticking, and reducing the cutting temperature of the tool. It has a significant effect on increasing cutting efficiency and tool life. If it is applied to diamond-coated tools, it will be more excellent However, the processing of diamond is difficult and the technology is immature. At present, few people have studied the diamond-coated textured tool, and there is no suitable method to prepare diamond-coated diamond with textured morphology.

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  • Preparation method of textured coating for diamond tools based on micro-blocking method
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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] figure 1 Shown in is the tool substrate, mask, barrier protrusions, diamond coating and the resulting tool with the diamond textured coating. figure 2 Shown are masks with different textured cutouts.

[0027] A method for preparing a textured coating of a diamond tool based on a micro-area blocking method, comprising the following steps:

[0028] In the first step, the tool substrate is made of common tool materials such as cemented carbide, and undergoes pre-treatments such as deacidification and alkali removal, two-step cobalt removal or adding a transition layer, so that the surface is easy to grow a diamond coating. Roughen the tool surface so that the surface roughness is greater than 6.3 microns. The roughened tool surface is conducive to the adhesion of diamond powder and increases the adhesion of the growing diamond coating. The surfa...

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Abstract

The invention discloses a preparation method for a diamond cutter texture coating based on a micro-region blocking method. The preparation method is characterized by mainly comprising the steps that,1, a micro-hole and / or a micro-groove array are machined in a metal film to serve as a mask; 2, a tool base body undergoes pretreatment; 3, the mask is fixed on the surface of the cutter base body subjected to pretreatment; 4, a micro-region barrier film is deposited on the surface of the cutter covered with the mask by adopting a surface coating technology, the mask is removed after the film is prepared, micro-region protrusions with texture features and with the function of restraining the growth of a diamond are formed on the surface of the cutter; 5, a diamond texture coating is selectively grown on the surface of the cutter with the micro-region protrusions by adopting a CVD method; and 6, the micro-region protrusions which are formed on the surface of the cutter base body in a depositing mode and have the texture features in the step 4 are removed. The method is simple, convenient and rapid and relatively low in cost, the growth efficiency and the success rate are relatively high, the cutter cannot be damaged, and the strength of the cutter can not be reduced.

Description

technical field [0001] The invention relates to a cutting tool preparation technology, in particular to a diamond cutting tool preparation technology, in particular to a preparation method of a diamond cutting tool texture coating based on a micro-area blocking method. Background technique [0002] As we all know, the micro-texture on the surface of the tool has the functions of reducing friction and wear resistance, anti-sticking, and reducing the cutting temperature of the tool. It has a significant effect on increasing cutting efficiency and tool life. If it is applied to diamond-coated tools, it will be more excellent However, the processing of diamond is difficult and the technology is immature. At present, few people have studied the diamond-coated textured tool, and there is no suitable method to prepare diamond coating with textured morphology. Contents of the invention [0003] The purpose of the present invention is to address the gaps in the above research field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C16/04C23C16/27
CPCC23C16/042C23C16/27C23C16/272C23C16/274
Inventor 卢文壮张召于守鑫冯伟李微微田万杉孙玉利左敦稳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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