In recent years, with the rapid development of the modern machinery industry, the performance requirements of processing workpieces are getting higher and higher. High-efficiency and high-precision double-face grinding technology has been continuously expanded in the field of processing. It has been widely used in air conditioners, automobiles, bearings, hydraulics, magnetic materials, molds, tools, aerospace, semiconductors and other fields. Vitrified bond CBN grinding tool is widerly used in double face grinding. Glory Diamond Tools could offer vitrified bond CBN grinding wheels.
The formulation and organization of the abrasive tool are important factors affecting the performance of the vitrified bond CBN grinding tool. Designing and adjusting the formulation of the vitrified bond CBN grinding tool could effectively control the mechanical strength, hardness and porosity of the abrasive tools. The pores are the gaps among the abrasive grains in the abrasive, among the abrasive particles, the bond and inside the bond. During the grinding process, the air holes have the functions of chipping, chip removal and promoting the flow of the coolant, which can prevent the grinding debris from scratching the surface of the workpiece, help to enhance the dissipation of the grinding heat, reduce the temperature of the grinding area, and prevent the workpiece from being damaged. In addition, the pores have great influence on the mechanical properties and microstructure of the abrasive tools. Appropriate adjustment and control of the number, size and distribution of the pores in the abrasive tools can make the abrasive tool suitable for processing in different fields. Adding pore former is also possible to effectively adjust and control the shape, size and number of pores in the CBN abrasive tools, and optimize the performance of the CBN abrasive tool from the microstructure.
In the grinding process, the abrasive particles are the main substances for cutting. The bond is the substance that binds the abrasive grains in the grinding tool, and the strength of the bond is determined by the strength of the bond itself. During the grinding process, the bond plays a role in holding the abrasive grains, and make the abrasive particles have certain self-sharpening effect. Different abrasive particle sizes have different bonding states with ceramic bond due to their different surface areas. Moreover, for the same abrasive grain rate, the abrasive grain size is different, and the abrasive structure is also different in elasticity. Therefore, the change of the grain size of the abrasive has great influence on the strength, hardness and structure of the ceramic bond CBN abrasive. The bond acts to hold and bond the abrasive particles in the abrasive article. The change of the bond content has great influence on the performance of the abrasive tool, such as mechanical strength, hardness, self-sharpness of the abrasive tool, durability, and service life. The molding density affects the structure of the abrasive tool and has a significant effect on the porosity, mechanical strength and hardness of the abrasive tool.