Method for preparing resin grinding wheel used for cutting soft metals

Abstract

The invention relates to a method for preparing a resin grinding wheel used for cutting soft metals. The resin grinding wheel comprises the following components in parts by mass: 25-40 parts of black silicon carbide, 20-40 parts of white corundum, 25-40 parts of brown aluminum oxide, 4-8 parts of phenolic resin liquid, 0.5-1 part of carbon black, 8-12 parts of potassium fluoroaluminate and 12-16 parts of phenolic resin powder. By virtue of the black silicon carbide, white corundum and brown aluminum oxide abrasive compound, the black silicon carbide abrasive compound has high hardness, most of the granules are needle-shaped and flak, and the resin grinding wheel has sharp cutting edges and has unique advantages while cutting soft metal materials. Moreover, due to low content of the binding agent phenolic resin and low green body forming density, low product thickness can be achieved, so that abrasive particles can be removed from the grinding wheel in time so as to expose new cutting edges in the cutting process of the grinding wheel along with blunted grinding of the abrasive particles. Moreover, the resin grinding wheel is low in forming density and high in porosity, chips can be effectively removed, and blockage of the pores of the grinding wheel is avoided, so that continuous and high-efficiency cutting of the grinding wheel is realized.

Description

technical field [0001] The invention relates to the technical field of grinding tools, in particular to a method for preparing a resin grinding wheel for cutting soft metals. Background technique [0002] The grinding wheel is a circular bonded abrasive tool with a through hole in the center made by mixing abrasives and binders, compacting, drying, and roasting. The grinding wheel is the one with the largest amount of consumption and the widest range of use among abrasive tools. It can be used at high speed. It is a tool that can be used for rough grinding, semi-finishing, fine grinding, grooving and cutting of the outer circle, inner circle, plane and various profiles of the workpiece. Grinding wheels can be divided into resin grinding wheels, rubber grinding wheels, metal grinding wheels, and ceramic grinding wheels according to different types of binders. Among them, resin grinding wheels are made of phenolic resin, epoxy resin, polyurethane resin, polyvinyl alcohol resin...

AI Technical Summary

Problems solved by technology

[0003] However, soft metal materials include copper, aluminum, pure iron, etc., which are soft in texture, good in plasticity, good in ductility, low in strength and hardness, and the abrasives used in ordinary resin slices have poor self-sharpening properties. Some grinding wheels are mainly aimed at cutting ordinary steel. When cutting soft metal materials, it is easy to cause chips to block the pores of the grinding wheel, so that the abrasive grains of the grinding wheel cannot fall off in time, and eventually the cutting cannot be carried out, and even the grinding wheel and the workpiece are burned.