What factors are related to the hardness of abrasive tools

The hardness of the abrasive tool will be related to the specific usage and applicable fields of the abrasive tool. What factors affect the hardness of the abrasive tool? Below we will take you to find out.

1. The hardness of the abrasive tool mainly depends on the amount of binder added and the density of the abrasive tool. If the abrasive particles are easy to fall off, the hardness of the abrasive tool is low; otherwise, the hardness is high. The hardness grades are generally divided into seven grades: super soft, soft, medium soft, medium, medium hard, hard and super hard, and several small grades can be further subdivided from these grades. The most commonly used methods for measuring the hardness of abrasive tools are the hand cone method, the mechanical cone method, the Rockwell hardness test method and the sandblast hardness test method.

2. The hardness of the abrasive tool has a corresponding relationship with its dynamic elastic modulus, which is beneficial to use the audio method to measure the dynamic elastic modulus of the abrasive tool to express the hardness of the abrasive tool. In the grinding process, if the material of the workpiece to be ground has high hardness, the abrasive tool with low hardness is generally selected; otherwise, the abrasive tool with high hardness is selected.

The above two aspects have an important impact on the hardness of abrasive tools, and manufacturers also mainly produce abrasive tools with different hardness based on these two aspects to provide you with different choices.