Polycrystalline Diamond Products
NDP has a range of polycrystalline diamond (PCD) products for use in a variety of applications:
SynPak PCD for non-ferrous machining, dressing and wear tools used in the automotive, aerospace, construction and other industries
Thermally stable polycrystalline diamond (TSP) composites for high temperature wear applications
Polycrystalline diamond wire-drawing die blanks
As is the case with NDP’s diamond and cBN grit products, NDP works with selected partners to identify and develop new and tailored PCD and other polycrystalline products to meet the performance, quality and cost targets that help improve the business economics and value for the customers we service.
SynPak PCD is produced by intergrowing micron sized diamonds at extremely high pressures and temperatures to produce a solid, continuous layer of polycrystalline diamond supported by a tungsten carbide substrate. The polycrystalline diamond layer is anisotropic due to its polycrystalline nature and it has no natural cleavage plane or preferential wear direction. As a result of this production process, it is tough as well as being extremely hard. The tungsten carbide substrate, which is typically the source of the metal solvent-catalyst that facilitates the diamond sintering, also provides mechanical support for the diamond layer and allows attachment by brazing, adhesives or mechanical means.
The cutting and wear behaviour of SynPak materials can be engineered, by the design and the choice of micron diamond, additives and growth conditions, to optimise the performance of the material for each application.
PCD has a maximum working temperature of 700ºC in air; beyond this temperature the PCD will start to thermally degrade, especially when machining ferrous materials. For higher temperature applications, NanoPak thermally stable, SiC-cemented polycrystalline diamond provides an excellent alternative to conventional PCD.