Metal-bonded diamond grinding wheel

Abstract

The invention belongs to the grinding apparatus abrasive grinding technical field and relates to a metal-bonded diamond grinding wheel. The metal-bonded diamond grinding wheel is made of the following raw materials in percentage by weight: 50 to 60% of diamond powder; 4 to 11% of Sn powder; 11 to 18% of Cu powder; 13 to 25% of Al powder; 5 to 20% of Mg powder; and 0.01 to 1% of Ce powder. The Sn powder has low melting point and can reduce the sintering temperature and time of the matrix of the grinding wheel; the Cu powder is additionally adopted, so that the grinding wheel can have favorable heat dissipation performance as well as improved strength and stiffness; the Al powder is additionally adopted, and therefore, the heat-resisting performance and the heat dissipation performance of the matrix of the grinding wheel can be improved, and high easiness in grinding of the grinding wheel can be ensured, and burning and scratch caused by the contact of the matrix and a workpiece in high-speed grinding of the grinding wheel can be avoided; the Mg powder is additionally adopted, and therefore, the heat-resisting performance and the heat dissipation performance of the matrix of the grinding wheel can be improved, and at the same time, the effects of the Al powder can enhanced; and the Ce powder is additionally adopted, and therefore, the mechanical property of the body of the grinding wheel can be effectively improved, and the adhesive strength of the materials of the body to diamond can be improved.

Description

technical field [0001] The invention relates to the technical field of abrasive grinding, in particular to a metal-bonded diamond grinding wheel. Background technique [0002] At present, most of the artificially synthesized diamonds are in the form of powder or fine particles. In order to use diamonds for high-precision and high-efficiency grinding, a binder is usually used to bond the diamond abrasive grains and make them with Abrasives with a certain strength and shape are easy to install on various grinding machines for grinding. Compared with other abrasives such as corundum and silicon carbide, when grinding with diamond grinding wheels, it has the following advantages: high grinding efficiency; high wear resistance, less consumption of abrasive grains, and high service life, especially for grinding It is most obvious when the workpiece is hard and brittle; the abrasive grain has high hardness and wear resistance, and the abrasive grain can keep sharp for a long time...

AI Technical Summary

Problems solved by technology

Metal-bonded diamond grinding wheels currently have a variety of formulations. The grinding wheels made of many formulations achieve high strength, maintain the geometry of the working surface, have a long life, and are impact-resistant, but they still have poor self-sharpening and low efficiency, which cannot meet the continuous processing needs