Metal ceramic composite binding agent and composite binding agent diamond grinding wheel

Abstract

The invention discloses a metal ceramic composite binding agent and a composite binding agent diamond grinding wheel manufactured by adoption of the metal ceramic composite binding agent. The metal ceramic composite binding agent is composed of, by weight, 65 percent to 75 percent of metal powder and 25 percent to 35 percent of ceramic powder. The metal powder is composed of, by weight, eight percent to ten percent of tungsten, five percent to eight percent of tin, five percent to eight percent of zinc, three percent to five percent of lead, and the balance copper. The ceramic powder is formed by mixing and melting, by weight, 40 percent to 50 percent of SiO2, 20 percent to 30 percent of Al2O3, 10 percent to 20 percent of K2O, five percent to 15 percent of MgO, and three percent to eight percent of Fe2O3. According to the composite binding agent diamond grinding wheel manufactured by adoption of the metal ceramic composite binding agent, the good sharp and self-sharpness characteristics of a ceramic composite binding agent diamond grinding wheel can be kept, and the high-rigidity and good-shape-maintaining advantages of a metal binding agent diamond grinding wheel are achieved.

Description

technical field [0001] The invention belongs to the field of diamond grinding wheels, and in particular relates to a metal-ceramic composite bond and a composite bond diamond grinding wheel prepared by using the metal-ceramic composite bond. Background technique [0002] Compared with ordinary grinding wheels, diamond grinding wheels have the characteristics of high grinding efficiency, good surface finish, high grinding quality and low cost. The main features of diamond grinding wheels are high hardness, high thermal conductivity, and high sharpness, resulting in high grinding rates. It is suitable for high-efficiency and powerful grinding in modern industrial mechanical processing, and is suitable for processing high-hard materials such as hard alloys, optical glass, ceramics, quartz, gemstones, ferrite, semiconductor materials, cast iron, hardened steel, building materials, and refractory materials. . [0003] Diamond grinding wheel is to use diamond for high-precision ...

AI Technical Summary

Problems solved by technology

[0004] Although the traditional resin-bonded diamond grinding wheel has good sharpness, good self-sharpening, high grinding efficiency, low grinding heat, and can improve the surface roughness of the workpiece, it has low heat resistance and low holding force on diamond abrasives. , the diamond abrasive grains are easy to fall off, the wear resistance is insufficient, the dressing gap is short, which affects the production efficiency, and because the resin bond is an organic material, limited by the performance of the resin itself, the heat resistance, water resistance and wear resistance of the grinding wheel are poor. Perform precision profile grinding

[0005] Although the vitrified bond diamond grinding wheel has strong grinding ability, low grinding temperature, strong self-sharpening and good sharpness, it has poor wear resistance and is difficult to repair; however, because the vitrified bond currently used is a low-temperature ceramic inorganic material, a large amount of Alkaline substances in the bonding agent are easy to volatilize during the preparation process of the bonding agent and cause the performance of the bonding agent to be unstable. In the manufacturing process of the diamond grinding wheel, the wettability of the bonding agent to diamond is poor, which greatly reduces the holding force of the bonding agent on diamond. Diamonds are easy to fall off during the grinding process, and the loss is large

[0006] Although the metal bond diamond grinding wheel has high strength, good geometric shape retention of the working surface, long life and impact resistance, it has poor self-sharpening and low efficiency, which cannot meet the needs of continuous processing

[0007] The excellent sharpness, self-sharpness and super wear resistance of the diamond grinding wheel are the key to fully improving the processing efficiency of the CNC grinding machine; and the grinding wheel bond is the key factor affecting the performance of the diamond grinding wheel. The traditional single bond can no longer meet the requirements. The need for the performance of diamond grinding wheels for CNC grinding machines that require high processing efficiency