Polyvinyl acetal resin grinding wheel and production method thereof

Abstract

The invention discloses a polyvinyl acetal resin grinding wheel and a production method thereof. The polyvinyl acetal resin grinding wheel comprises the following materials in weight by parts: 50-60 parts of CBN abrasives, 5-10 parts of zirconia corundum abrasives, 5-10 parts of silicon powders, 5-15 parts of polyvinyl acetal resin powders, 2-6 parts of furfural, 1-2 parts of trioctyl trimellitate, 5-10 parts of cryolite, 5-10 parts of bauxite, 2-5 parts of nanometer siliceous shale powders and 2-5 parts of tool steel powders. The binder polyvinyl acetal resin used by the invention has high mechanical strength and good heat resistance, and the durability of the prepared resin grinding wheel is greatly improved. According to the invention, ceramic materials are added into a filer, thus the polyvinyl acetal resin grinding wheel has good bonding performance, the abrasives do not easily fall off, the heat resistance and the hardness of the resin grinding wheel are improved, cracks formed by rigid grinding are reduced, and the service efficiency and the service life of the resin grinding wheel are improved; and in addition, as the tool steel powders are added, thus the heat dissipation is fast to be beneficial for fast dissipating a large number of head emitted during cutting of the grinding wheel the role of reducing the cutting temperature is played.

Description

technical field [0001] The invention relates to a polyvinyl acetal resin grinding wheel and a preparation method thereof, which belong to the technical field of grinding tool processing. Background technique [0002] Grinding wheel is the most important type of abrasive tool in grinding process. The grinding wheel is a porous body made by adding a binder to the abrasive, compacting, drying and firing. Grinding wheel is the most widely used type of grinding tool. It rotates at high speed when used, and can be used for rough grinding, semi-finishing and Fine grinding as well as grooving and parting off etc. The substance used to bond the abrasive in the grinding wheel is called a bonding agent. The performance of the bonding agent determines the strength, impact resistance, heat resistance and corrosion resistance of the grinding wheel. At present, the binder is mainly divided into four types: ceramics, resin, rubber and metal. Among them, the resin binder has high strength...

AI Technical Summary

Problems solved by technology

We know that resin grinding wheels mostly use phenolic resin as a bond at present, and the heat resistance of phenolic resin bonded grinding wheels is poor during the grinding process, which greatly restricts the use efficiency and life of resin grinding wheels. Therefore, a new Resin grinding wheel with high heat resistance has become a hot spot of current research