Polycrystalline diamond cutting tools

polycrystalline diamond (PCD) cutting tools PCD high temperature high pressure conditions by cobalt and other metal-bonded to synthetic diamond powder sintered

polycrystalline material gathered, also known as sintered diamond. Overall sintered polycrystalline diamond cutter cutter for milling, PCD grain was

Disordered arrangement state, is isotropic, uniform hardness, graphitization temperature is 550 ℃. Tool has high hardness, high thermal conductivity, low thermal

expansion coefficient, high elastic modulus and a low coefficient of friction. They are very sharp and so on.
Synthetic polycrystalline diamond compact (PDC) tool to improve PCD inserts toughness and weldability, often the PCD and carbide composite body made of synthetic

polycrystalline diamond blade (PDc). The surface of the cemented carbide substrate being suppressed 0.5 ~ 1mm thick layer of sintered PCD

. The flexural strength of the composite blade with carbide consistent hardness close to PCD, PCD can replace the use. PCD and synthetic polycrystalline diamond

compact (PDC) cutter sharp edge and workpiece surface quality than ND. While its workability is poor,

Grinding ratio is small, it is difficult according to the geometry of any head shape. Current use of synthetic polycrystalline diamond compact Preparation Tool only,

still can not be manufactured with chipbreaker indexable inserts and complex three-dimensional surface geometry cutter.
CVD diamond films (TDF) welding tool welding thick diamond cutting tool is good to laser welded to a CVD diamond thick film substrate (usually a class K carbide) to

form a composite sheet, and then polishing composite sheet, the second welding to the cutter body, sharpening as needed

Shape and edge. Figure 3 (a) shows, for the CVD diamond films (diamond film thickness of 30μm), with high hardness, wear resistance, low coefficient of friction,

etc., is to create cutting non-ferrous metals and non-metallic materials, the ideal tool materials. As Diamond Welding

Process complex process, CVD diamond films (TDF) welding tool yet high-volume applications.