How to choose ordinary grinding wheel?

According to different abrasive materials, bond materials and manufacturing processes, each type of grinding wheel has a certain scope of application. Improper selection will directly affect machining accuracy, surface roughness and production efficiency. Therefore, the grinding wheel must be selected according to the specific situation. How to choose the grinding wheel correctly?

1. The choice of abrasive mainly depends on the workpiece material and heat treatment method

When grinding materials with high tensile strength, choose abrasives with high toughness; when grinding materials with low hardness and high elongation, you should choose brittle abrasives; when grinding high hardness materials, choose abrasives with higher hardness; it is not easy to choose The processed abrasive undergoes a chemical reaction.

2. The choice of particle size mainly depends on the surface roughness and grinding efficiency of the workpiece to be ground.

The particle size refers to the particle size of the abrasive, and the size is expressed by the particle size number. When grinding with coarse grinding wheels, the production efficiency is high, but the surface of the workpiece is rough. When grinding with fine-grained wheels, the surface roughness of the workpiece is better, but the productivity is lower. On the premise of meeting the roughness requirements, coarse-grained grinding wheels should be used as much as possible to ensure a higher grinding efficiency. Generally, coarse grinding wheels are used for coarse grinding, and fine grinding wheels are used for fine grinding.

3. The choice of hardness mainly depends on the material of the workpiece to be polished, the polishing efficiency and the surface quality.

Hardness refers to the difficulty of abrasive particles falling off under the action of external force. In order to meet the requirements of different workpiece materials grinding, the grinding wheel is processed into different hardness levels.