A method of growing diamond texture coating for cutting tools by shape and position definition method

Abstract

The invention discloses a method for growing a diamond texture coating of a cutter by using a shape-limiting method. The method comprises the following steps: 1, pretreatment on a base material is carried out so as to facilitate deposition of the diamond coating; 2, a mask with a hollowed-out structure is covered on the surface of the base material subjected to the pretreatment; 3, a high-melting-point material coating and a growth-resistant element coating are deposited on a substrate corresponding to the hollowed-out structure; 4, the growth-resistant element coating capable of inhibiting growth of diamond is deposited again on the surface of the high-melting-point material coating; 5, the mask is taken down from the substrate or is directly subjected to etching processing on the position deposited with the high-melting-point material coating and the growth-resistant element coating, and a texture projection which is opposite to the final cutter in shape is formed; 6, diamond powder is coated in an etching groove so as to facilitate nucleation of the subsequent nanodiamond deposition; 7, the substrate is placed in a deposition furnace to carry out the nanodiamond deposition on an etching area and the surface of the whole substrate; and 8, the texture projection of the non-deposited nanodiamond coating on the surface of the substrate is removed, and nanodiamond deep-deposit layer is exposed. The method for growing the diamond texture coating of the cutter by using the shape-limiting method has the advantages of being simple and easy to implement, and manufacturing efficiency and quality of the cutter can be improved.

Description

technical field [0001] The invention relates to a method for preparing a cutting tool, especially a method for preparing a diamond-coated cutting tool, in particular to a method for growing a diamond texture coating of a cutting tool by a shape-position limiting method, which utilizes the surface coating technology of the cutting tool (such as CVD and PVD technology, etc.), a layer of materials with higher melting points (such as tungsten, chromium, tantalum and other metal materials, as well as some alloy materials and non-metal materials) is coated on the surface of the tool within a certain range. The range is determined by the mask ( Such as Cu sheet, etc.), and then deposit a small amount of hindered elements (inhibiting diamond growth materials such as Fe, Co, Ni, etc.), and then etch the coating (such as micro-electric discharge, ion beam etching or laser etching) corrosion, etc.) to make the textured coating bulge, clean the surface of the treated tool with a cleaning ...

AI Technical Summary

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, reducing the temperature of the tool body, etc., and 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. The preparation method of diamond-coated textured tools is rarely studied, and there is no suitable method to prepare diamond-coated textured tools.

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