Method for improving surface abrasion performance and prolonging service life of nitride coating cutter

Abstract

The invention discloses a method for improving the surface abrasion performance and prolonging the service life of a nitride coating cutter. The method comprises the following steps that ultrasonically cleaning is carried out on the nitride coating cutter, then dehydrating and drying are carried out, and then the nitride coating cutter is put into a vacuum chamber; a cold cathode penning ion source is utilized, high-energy argon ion beams are adopted for carrying out homogenized ion sputtering treatment on the nitride surface of the nitride coating cutter, then argon ion beam extraction voltage is reduced, ion beam polishing treatment is carried out, and the smoothness of the nitride surface is improved; and arc discharge is utilized, arc discharge is generated on the surface of a cathode graphite target of an arc ion source, carbon plasmas are generated in an anode graphite cylinder of the arc ion source, the carbon plasmas enter a filtering magnetic field to be filtered, then pure carbon ion beams are formed, and the pure carbon ion beams enter a scanning magnetic field after being focused through a magnetic lens field, and uniformly depositing is carried out on the surface of a nitride coating of the polished nitride coating cutter through a magnetic field scanning technology to form an amorphous tetrahedral carbon film.

Description

technical field [0001] The invention belongs to the technical field of ion beam material surface modification and new materials, and in particular relates to a method for improving the surface wear performance and service life of a nitride coating tool. Background technique [0002] In recent years, the concept of green development has become the main theme of economic development, and conservation, low carbon, low consumption and high efficiency are the absolute principles of development. It is the pursuit of all scientific and technological workers to greatly improve the service life of equipment and save raw material consumption through surface treatment technology. [0003] With the development of coating technology, most of the knives and cutting tools currently used in the market adopt coating technology. Only the knives with special needs do not use coating, such as processing the surface of aluminum products with high requirements for smoothness, cutting metal thin b...

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Problems solved by technology

However, this kind of coated tool also has some insurmountable shortcomings, such as: large roughness, large particle deposition on the surface, not dense, poor corrosion resistance, large friction coefficient, large wear, short life, low hardness, etc., not suitable for precision tools. Processing, in order to improve the service life, the coating is often plated thicker, and as the coating becomes thicker, the sharpness of the blade will be greatly reduced, affecting the processing accuracy and service life, and the coating is too thick, and it is easy to cause The adhesion of the coating film is reduced, and it is easy to crack. At present, the thickness and service life of the coating tool have basically reached the limit. Therefore, further improving the service life of the nitride coating tool and improving its machining accuracy is placed in the development process bottleneck problem in

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