High toughness ceramic material for cutting tools and preparation method thereof

Abstract

The invention relates to a high toughness ceramic material for cutting tools. The high toughness ceramic material is prepared from the following raw materials by weight part: 2-3 of glycerol, 5-6 of diethylene glycol, 20-25 of silicon nitride, 3-5 of Y2O3, 18-22 of spodumene, 7-9 of eucryptite, 3-5 of lithium carbonate, 0.5-0.7 of rhodium oxide, 34-37 of ZrO2, 1-2 of zinc phosphate, 50-58 of mullite, a proper amount of deionized water, a proper amount of ethanol, 1.7-2 of polyethylene glycol, and 3-4 of a wear-resistant additive. The ceramic provided by the invention is added with rhodium oxide, so that the ceramic has increased toughness, is easy to shape and is not easy to break. By adding zinc phosphate and mullite, the wear resistance of the ceramic is increased, the ceramic can be suitable for making cutting tools, and the cost is low. By using the wear-resistant additive involved in the invention, surface smoothness, wear resistance and heat resistance of the ceramic can be increased.

Description

technical field [0001] The invention relates to the field of ceramic tool materials, in particular to a ceramic material for high-toughness cutting tools and a preparation method thereof. Background technique [0002] With the development of high technology, the mechanical processing industry has put forward more stringent and demanding requirements for tool materials. Now it is necessary to process materials with higher hardness, higher cutting efficiency, and higher machining accuracy. This requires higher For the performance of cutting tools, traditional cutting materials such as high-speed steel are not hard enough, and scarce resources such as molybdenum and nickel are wasted, so ceramic cutting tools came into being. Ceramic cutting tools have the characteristics of high hardness, high density, high temperature resistance, anti-magnetization, anti-oxidation, strong corrosion resistance, good chemical stability, and high wear resistance, but they are still fragile, ...

AI Technical Summary

Problems solved by technology

[0002] With the development of high technology, the mechanical processing industry has put forward more stringent and demanding requirements for tool materials. Now it is necessary to process materials with higher hardness, higher cutting efficiency, and higher machining accuracy. This requires higher For the performance of cutting tools, the hardness of traditional high-speed steel and other cutting materials is not enough, and the scarce resources such as molybdenum and nickel are wasted, so ceramic cutting tools came into being

Ceramic cutting tools have the characteristics of high hardness, high density, high temperature resistance, anti-magnetization, anti-oxidation, strong corrosion resistance, good chemical stability, and high wear resistance, but they are still fragile, poor heat dissipation, and poor thermal shock resistance. , limited anti-wear performance and other shortcomings need to be improved, and at the same time need to continuously reduce production costs to achieve the maximum benefit of the enterprise and promote scientific and technological progress