Cemented carbide inserts are the most important cutting inserts today, with excellent performance and wide applications. But now with abundant material resources, various types of blades are emerging one after another, and cubic boron nitride blades are one of them.
Both cemented carbide blades and cubic boron nitride blades are manufactured by powder metallurgy, and both have high hardness, high wear resistance, and good thermal stability.
Hard alloy blades are used to cut heat-resistant steel, stainless steel, high manganese steel, tool steel, etc. Cubic boron nitride blades are mainly used for cutting gray cast iron, wear-resistant cast iron, and various high-hardness materials.
Although the hardness of cubic boron nitride blades is higher than that of cemented carbide blades, but also because of this, its brittleness is greater, the strength and toughness are poor, and it is not suitable for discontinuous surface processing under impact load. In addition, when using it to process soft iron group element materials, it is easy to produce long chips, scratch the rake face of the blade and form a built-up edge, which will cause the fluctuation of the cutting force and damage the blade.
Cemented carbide blades and cubic boron nitride blades have their own advantages and disadvantages. According to specific processing requirements, choose the appropriate blade to improve processing quality and processing efficiency.
