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What parameters determine the characteristics of the grinding wheel?

2024-07-29

1. Abrasive type
The main component of the grinding wheel is abrasive, abrasive has high hardness, wear resistance, heat resistance and toughness, responsible for the grinding work, bear the grinding heat and cutting force.
2. Granularity
Particle size refers to the size of the abrasive particles. According to the abrasive particle size is divided into two kinds of abrasive and grinding powder. Abrasive particles refer to the number of holes per inch length of the screen through which the abrasive particles can just pass. The larger the particle size number, the smaller the actual size of the abrasive particles. Grinding refers to the micron number of the maximum size of the particle measured under a microscope, which is expressed by W with numbers. The larger the number, the larger the size of the micropowder particles.
3. Adhesive
The function of the adhesive is to bond the abrasive grains together to make the grinding wheel have the necessary shape and strength. Its performance determines the strength, impact resistance, corrosion resistance, heat resistance and grinding wheel life of the grinding wheel.
4. Hardness
The hardness of the grinding wheel refers to the degree of difficulty of the abrasive particles falling off from the surface of the grinding wheel under the action of the grinding force. If the grinding wheel is hard, it is more difficult for the abrasive particles to fall off; on the contrary, if the grinding wheel is soft, it is easier for the abrasive particles to fall off. When the grinding wheel organization is loose, the workpiece material is hard, the grinding contact surface between the grinding wheel and the workpiece is large, and the grinding wheel porosity is low, a softer grinding wheel is needed.
(Resin grinding wheel diagram)
5. Organization
The organization of the grinding wheel is the volume ratio of abrasive particles, binder and pores. The greater the proportion of abrasive particles in the volume of the grinding wheel, the tighter the organization of the grinding wheel and the smaller the pores; on the contrary, the looser the organization. According to the different organization, the grinding wheel can be divided into three categories: tight, medium and loose.
6. Shape and size
In order to facilitate the management and selection of the grinding wheel, the shape, size and characteristics of the grinding wheel are usually marked on the end face of the grinding wheel.

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What is the grinding wheel used?

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Grinding wheel is a kind of tool used for grinding. It consolidates ordinary abrasives into a certain shape (mostly round, with a through hole in the center) by bonding agent, and has a certain strength of consolidated abrasives. The main components of the grinding wheel include abrasive, bond and pores, which are collectively referred to as the three elements of the fixed abrasive. There are many kinds of grinding wheels. According to the different binders, the common ones are ceramic (binder) grinding wheels, resin (binder) grinding wheels, rubber (binder) grinding wheels, etc. Grinding wheels are widely used and can be rotated at high speed for rough grinding, semi-fine grinding and fine grinding of metal or non-metal workpieces, as well as grooving and cutting operations. In industrial applications, grinding wheels can process the outer circle, inner circle, plane and various types of surfaces of the workpiece.