According to the provided materials, this synthetic diamond and cemented carbide composite material (PDC) has the following significant advantages when processing non-metallic materials:

Combines extremely high hardness with outstanding wear resistance: When processing non-metallic materials, the tool's wear resistance directly determines its service life. The surface layer of this composite is polycrystalline diamond, which has extremely high wear resistance. Its wear ratio can reach the order of 105, which is about 80 times that of conventional YG8 cemented carbide. This allows it to maintain long-lasting sharpness when cutting non-metallic materials, significantly extending tool life.

Excellent impact toughness, resistant to edge chipping: Although traditional single diamond materials have high hardness, they are very brittle and prone to chipping during cutting. This composite uses cemented carbide as a substrate, which compensates for the high brittleness of diamond. Drop-weight impact tests show it can withstand impact energy greater than 4.5 Joules (J). Therefore, when processing non-metallic materials, it can effectively resist the impact forces generated by cutting, reducing the risk of tool damage.

Performance can be customized for different materials: There is a wide variety of non-metallic materials with significant differences in physical properties. A huge advantage of this composite material is that its tool performance can be flexibly adjusted by using synthetic diamond powder of different particle sizes for sintering. For instance, if processing materials that require higher toughness, fine-grained (e.g., W20) diamond powder can be selected; if processing highly abrasive materials, coarse-grained (e.g., 120/140 mesh) powder can be used to maximize wear resistance.

Good thermal stability: A large amount of friction heat is often generated during cutting processes. Tests show that after holding the composite at a high temperature of 700℃ for 10 minutes, its wear ratio only drops slightly (remaining at 5.5×104∼6×104), indicating excellent resistance to thermal degradation below 700℃. This ensures that the tool can still maintain stable cutting performance when it heats up during the high-speed processing of non-metallic materials.

In summary, cutting tools made from this composite material perfectly integrate the wear-resistant hardness of diamond with the toughness of cemented carbide, and their performance can be customized according to the specific needs of non-metallic materials, making them highly ideal processing tools.