Grinding medium containing ceramic particle, preparation and use thereof

Abstract

The invention relates to an abrasive, in particular to an abrasive containing ceramic grains, a preparation method and applications of the abrasive. The abrasive comprises ceramic grains and abrasive adhesive, wherein, the ceramic grain comprises ultra-hard material and a ceramic adhesive; the ceramic powder and the ultra-hard material are burned together, crushed and screened to obtain the ceramic grains; subsequently, the ceramic grains are uniformly mixed with the ultra-hard material and metal adhesive or resin adhesive which compose the abrasive adhesive, thus obtaining the abrasive containing the ceramic grains; alternatively, the ceramic powder and the ultra-hard material are sintered together, crushed and screened to obtain the ceramic grains; the ultra-hard material and the metal adhesive or the resin adhesive are uniformly mixed to obtain the abrasive adhesive; and the ceramic grains and the abrasive adhesive are uniformly mixed, thus obtain the abrasive containing the ceramic grains. The abrasive containing ceramic grains can be used for preparing ultra-hard tools which have wider applications and can be used in dry and high-temperature environments, thus overcoming the shortages that the use performance of the tool is affected, the tool has difficulties to remove chips when in use and the sharpness of the tool is reduced, and the like caused by that the tool is easy to generate plastic deformation under high temperature.

Description

technical field [0001] The invention relates to an abrasive material, in particular to a superhard abrasive material containing ceramic particles which can be used to make superhard tools, a preparation method and application thereof. Background technique [0002] Superhard materials include diamond, cubic boron nitride, diamond polycrystal, cubic boron nitride polycrystal, etc. When super-hard materials are used to make super-hard tools, in addition to direct single-piece inlays to form tools, most of them use super-hard materials as raw materials, and combine them with metal, resin, ceramic binders and super-hard materials to form various shapes. superhard tools. Superhard tools can be used to process non-metallic brittle materials such as stone and glass and metal alloy materials. [0003] Most of the existing stone processing fields use diamond tools. Most of these tools are combined with metal, resin, ceramic bond and superhard material, and are manufactured into var...

AI Technical Summary

Problems solved by technology

[0006] However, in some processing environments, especially dry grinding and cutting environments, the metal has strong thermal conductivity, and it is easy to quickly conduct heat to the resin, causing the resin to overheat or even carbonize, thereby reducing the adhesion of the carcass. The joint surface is easy to form a burnt edge, so that the metal particles fall off, causing the tool to be scrapped

On the other hand, in the dry high-temperature grinding and cutting environment, the surface of metal is easy to be plastically deformed, which directly affects the sharpness of the tool

For example, when polishing stone materials, there is a kind of resin polishing sheet, which is added with fine metal particles (including diamond), which is very effective in wet grinding, but poor in dry grinding.

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