Polycrystalline diamond PCD indexable tools such as PCD inserts DCGW070204, CCGT09T304, with chipbreaker or not etc with have very high durability (more than tens 

of times longer than cemented carbide tools), stable dimensional machining accuracy and good workpiece surface roughness.

PCD turning tools is not only an engineering material, but also a new functional material; It is not only a high-tech product, but also a high-efficiency product. 

With the development of modern industry, science and technology, polycrystalline diamond has been widely used in modern industry, national defense and high-tech

fields because of its excellent mechanical, thermal, chemical, acoustic, optical and electrical properties.

Diamond cutting tool has become an indispensable and necessary means in modern machining. This is mainly reflected in the following aspects:

1) High speed cutting and high stability machining;

2) Ultra precision mirror machining;

3) Dry cutting and clean machining.

The main processing workpiece of diamond tool are non-ferrous metals, non-metallic materials, woodworking materials containing Al2O3, alloys, ceramics, various fiber 

and particle reinforced composites, plastics, rubber, graphite, glass, wood, etc., and can also do ultra precision processing on the above materials.

PCD cutting tools account for 60% of the application in automobile industry. PCD tools are mainly used to process skirt, pin hole, cylinder block, gearbox, carburetor, etc. 

of engine piston in the automotive field. Because the silicon content of these parts is high (more than 10%) and most of them are produced in large quantities by assembly 

line, they have high requirements for the service life of tools, and cemented carbide tools are incompetent.