PCD refers to a polycrystal sintered by mixing fine diamond powder (micron size) with a small amount of metal powder (such as Co, etc.) and sintering at high temperature (1400 ℃) 

under high pressure. The cutting tools made of Polycrystalline diamond is the most widely used diamond tools, which is widely used in industrial fields such as automobiles, aerospace, 

and building materials. The PCD tools has the advantages of high cutting speed, long tool life and low cost of processing workpieces in large quantities. In order to improve engine 

performance, the piston material of the engine is changed from low-silicon aluminum alloy to medium-silicon aluminum alloy, and even high-silicon aluminum alloy is used.

And the excellent characteristics of PCD make PCD tools widely used in processing aluminum alloys, especially high-silicon aluminum alloys. The high-silicon aluminum alloy has higher 

hardness and wear resistance than other aluminum alloys. During cutting, the tool alternately cuts the soft aluminum base and hard silicon particles, and it is easy to wear with ordinary 

tools. At the same time, the cutting tool is also easy to produce chip edge, which will deteriorate the machining accuracy and surface roughness.

In order to avoid built-up edge and work hardening, the cutting edge must be sharp and the cutting surface must be smooth. LINKUT PCD tools exactly meet these requirements.