The processing of high-precision, low-roughness surfaces of aluminum and alloys is achieved by high-speed machining using PCD tools or PCD insert.

Pure aluminum has low hardness, hardness of 15-45HB, high thermal conductivity, tensile strength of 50MPa, high plasticity, and is suitable for high-speed cutting. Due to the 

low hardness, scratches and bumps on the surface of the workpiece should be prevented during production. Due to its high plasticity and low melting point, it is easy to produce

built-up edge during cutting,

reduce machining accuracy and enhance surface roughness. Aluminum and aluminum alloys are low in strength and low in hardness, and are prone to deformation during the cutting 

process, causing shape errors and increasing flatness errors in the workpiece to be machined.