Ceramic composite cutter material and preparation method thereof

Abstract

The invention discloses a ceramic composite cutter material and a preparation method thereof, wherein the ceramic composite cutter material mainly comprises 5-25 parts of ethyl methacrylate, 30-70 parts of titanium carbide, 5-27 parts of quartz, 5-24 parts of germanium oxide, 1-2 parts of palladium oxide, 1-2 parts of emery, 1-7 parts of silicon nitride, 0.1-0.5 part of boron nitride, 1-2 parts ofcarbon, 5-18 parts of nickel, 2-10 parts of cobalt, 4-8 parts of chromium, 1-3 parts of copper oxide, 0-1 part of cerium oxide, 0-1 part of glass fiber, and 0-1 part of neodymium oxide. According tothe present invention, powder preparing, billet material preparing, pre-molding, vacuum sintering, post-treatment and other steps are performed, and the process parameters are reasonably controlled soas to finally obtain the cutter composite material; and the operation is simple, and the product has advantages of chemical stability, low friction coefficient to steel, cutting melting resistance, cutting diffusion resistance and the like, and can cut refractory metal.

Description

technical field [0001] The invention relates to the technical field of composite cutter materials, in particular to a ceramic composite cutter material and a preparation method thereof. Background technique [0002] There are many types of cutting tool materials. At present, the main cutting tool materials are still high-speed steel and cemented carbide. Tool wear is the main failure form of cutting tools. The economy that can minimize the cost of cutting tools is the direction of cutting tool development. The high-temperature hardness of traditional molten high-speed steel cutting tools is also good, but its bending strength and toughness are low. The price of traditional carbide cutting tools is relatively high. There is a large demand for tungsten resources, and there are certain limitations in its development. The performance of cermets is between that of ceramics and germanium oxide series cemented carbide. Its hardness is higher than that of cemented carbide tools, a...

AI Technical Summary

Problems solved by technology

[0002] There are many types of cutting tool materials. At present, the main cutting tool materials are still high-speed steel and cemented carbide. Tool wear is the main failure form of cutting tools. The economy that can minimize the cost of cutting tools is the direction of cutting tool development. The high-temperature hardness of traditional molten high-speed steel cutting tools is also good, but its bending strength and toughness are low. The price of traditional carbide cutting tools is relatively high. There is a large demand for tungsten resources, and there are certain limitations in its development. The performance of cermets is between that of ceramics and germanium oxide series cemented carbide. Its hardness is higher than that of cemented carbide tools, and its oxidation resistance is good. The strength is higher than that of non-metallic ceramic knives. It not only maintains the high strength and high hardness of ceramics, but also has good metal toughness and plasticity. However, the bending strength, thermal conductivity and toughness of ceramic knives are very low. When the temperature difference is large or there is a large impact load, the tool is prone to failure

[0003] Ti(C,N)-based cermet is a new type of cermet material, which has the advantages of low density and the ability to cut refractory metals. It has been greatly developed in recent years. Ti(C,N)-based cermet is used as The tool material is suitable for high-speed cutting and dry cutting of cast iron, ordinary steel, and high-hardness steel. Its performance is better than that of cemented carbide and coated carbide tools, but with the continuous improvement of cutting efficiency, cutting accuracy and cutting time , the existing products can no longer meet the requirements of hardness, wear resistance, red hardness, especially the bending strength, thermal conductivity, toughness and other performance requirements of ceramic tools