How to Choose Diamond Grinding Wheel for PCD Tools
Polycrystalline diamond (PCD) is a polycrystalline crystal obtained by mixing diamond micronized powder of micron size with a small amount of metal powder (such as cobalt) and sintering at high temperature (1400 ℃) and high pressure (6000 MPa). Compared with other tool materials, PCD has the characteristics of extremely high hardness and wear resistance, high thermal conductivity, low thermal expansion coefficient, low friction coefficient, fast heat dissipation, low cutting temperature, low thermal deformation, and reduced surface roughness. However, PCD has a strong affinity with iron elements, so it is not suitable for processing ferrous metals. The common sharpening processes for PCD cutter include diamond grinding wheel mechanical sharpening, electric discharge sharpening, electrolytic sharpening, etc. Among them, the diamond grinding wheel mechanical sharpening is the most mature technology and it is the most widely used at present. This method has low sharpening efficiency an
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