Ceramic fiber reinforced nano ceramic bond diamond grinding wheel and preparation method thereof

Abstract

The invention discloses a ceramic fiber reinforced nano ceramic bond diamond grinding wheel. In a preparation process of the ceramic fiber reinforced nano ceramic bond diamond grinding wheel, raw materials such as nano graphite powder and beta-eucryptite are mixed with nanoscale silicon dioxide and aluminium oxide to form a mixture, and the mixture is calcined to form a nanoscale composite nano ceramic bond. Compared with the conventional ceramic bond, the nanoscale composite nano ceramic bond has higher strength and toughness and lower sintering temperature, the high-temperature wettability is better, a thermal expansion coefficient is lower, and a control property to an abrasive is good. In addition, raw materials such as ceramic fiber and aquadag powder that are added to raw materials for grinding wheel production have obvious reinforcing, toughening, temperature resisting and lubricating effects. The ceramic fiber reinforced nano ceramic bond diamond grinding wheel has good abrasion resistance, and high heat resistance and thermal conductivity; the surface of the ceramic fiber reinforced nano ceramic bond diamond grinding wheel is lubricative; the grinding precision of a workpiece is high; the grinding speed is high; and the grinding efficiency can be improved obviously.

Description

technical field [0001] The invention relates to the technical field of preparation of a vitrified bond diamond grinding wheel, in particular to a ceramic fiber-reinforced nano vitrified bond diamond grinding wheel and a preparation method thereof. Background technique [0002] Diamond abrasives have the characteristics of high hardness, high strength, and good wear resistance. They are widely used in the production of abrasive tools for grinding hard and brittle materials and cemented carbide. Diamond grinding wheels are one of the common types of abrasive tools. According to the requirements of diamond grinding wheels The classification of the bond used can be divided into resin bond diamond grinding wheel, metal bond diamond grinding wheel and vitrified bond diamond grinding wheel, etc. The vitrified bond grinding wheel is made of vitrified bond, diamond abrasive and filler according to a certain ratio. , after high temperature sintering, this kind of grinding wheel can so...

AI Technical Summary

Problems solved by technology

[0003] In the preparation process of vitrified bond diamond grinding wheel, factors such as the choice of abrasive, vitrified bond, and firing conditions will affect the grinding performance of vitrified bonded diamond grinding wheel, especially the performance of vitrified bond is more important. Traditional The binder generally has high sintering temperature, low strength, and poor wetting and coating on the abrasive, which directly leads to the deterioration of the performance of the diamond abrasive and greatly reduces the grinding performance.