In the field of grinding processing, the hardness and wear resistance of materials are directly related to processing efficiency, workpiece quality and production costs. In recent years, cubic boron nitride (CBN), as a new type of superhard material, has gradually become the preferred raw material for grinding wheels and other abrasives due to its excellent hardness and wear resistance. In this paper, the excellent performance of cubic boron nitride abrasives will be discussed in depth, and its significant advantages in the manufacture of grinding wheels will be demonstrated through specific use cases.

Superior Hardness

Cubic boron nitride has the second highest hardness in nature after diamond. With a Mohs hardness of up to 9.5, it is much higher than conventional abrasives such as silicon carbide, boron carbide and corundum. This means that Cubic Boron Nitride abrasives are able to penetrate and break up the workpiece material more easily during the grinding process, significantly improving grinding efficiency.

Outstanding wear resistance

In addition to its high hardness, Cubic Boron Nitride also exhibits excellent wear resistance. During the grinding process, Cubic Boron Nitride abrasives are able to stay sharp for a long time, reducing abrasive consumption and extending wheel life. Compared with traditional abrasives, the wear resistance of Cubic Boron Nitride abrasives is several times or even tens of times higher, which greatly reduces production costs.

Case 1: Grinding of high hardness alloy steel

In the aerospace industry, high hardness alloy steel is a common material used to manufacture critical components. However, due to its extremely high hardness, traditional abrasive wheels are often inefficient in the grinding process and prone to wear. An aerospace manufacturer has adopted cubic boron nitride grinding wheels for the grinding of high hardness alloy steel, and found that the grinding efficiency has been increased by nearly 50% compared with traditional grinding wheels, and the service life of the grinding wheels has been extended by more than three times. This not only improves productivity, but also significantly reduces production costs.

Case 2: Precision grinding of bearing steel

Bearing steel is the key material for manufacturing high-precision bearings, which requires extremely high surface finish and dimensional accuracy. A bearing manufacturer adopts Cubic Boron Nitride grinding wheel for precision grinding of bearing steel, and finds that the surface finish of the ground bearing steel reaches the level of mirror, and the dimensional accuracy fully meets the design requirements. At the same time, the high abrasion resistance of the cubic boron nitride grinding wheel reduces the number of dressing times during the grinding process, which further improves the production efficiency and product quality.

Case 3: Grinding of cold hard cast iron rolls

In the iron and steel industry, cold hard cast iron rolls are an important part of the rolling process. However, due to its high hardness and good wear resistance, traditional abrasive grinding wheels are often difficult to perform in the grinding process. An iron and steel enterprises using cubic boron nitride grinding wheel for cold hard cast iron roll grinding process, found that the grinding efficiency than the traditional grinding wheel increased by nearly 40%, and the grinding wheel service life has been extended by more than 2 times. This not only improves the processing quality of the roll, but also significantly reduces production costs.

In summary, cubic boron nitride abrasive with its excellent hardness and wear resistance, in the manufacture of grinding wheels show significant advantages. Through specific use cases can be seen, the cubic boron nitride grinding wheel in grinding high hardness, high toughness materials with excellent performance, can improve the grinding efficiency, workpiece quality and grinding wheel life. With the continuous progress of technology and application expansion, cubic boron nitride abrasives will certainly play a more important role in the field of grinding processing.