Single crystal diamond tools are almost exclusively used for high-precision finishing, which can ensure extremely high dimensional accuracy. PCD and CVD diamond can be used in many of the same processing fields, and PCD is more suitable for rough machining and processing occasions that require high tool fracture toughness. CVD diamond is better at finishing, semi-finishing and continuous turning, and can process more precise workpieces.
|
Performance |
MCD Tools |
CVD Tools |
PCD Tools |
|
Material structure |
Diamond |
Diamond |
Co-containing adhesive |
|
Abrasion resistance |
Higher than PCD and diamond film |
2-10 times higher than PCD |
Varies with diamond particle size |
|
Toughness |
Bad |
Good |
Excellent |
|
Chemical stability |
High |
High |
Lower |
|
Machinability |
Bad |
Bad |
Excellent |
|
Solderability |
Bad |
Bad |
Excellent |
|
Cutting edge quality |
Excellent |
Excellent |
Good |
|
Applicability |
Super finishing |
Finishing, semi-finishing, continuous cutting, wet cutting, dry cutting |
Rough machining, finishing |
PCD tools are most suitable for processing aluminum and other tough non-ferrous alloys (such as copper, brass, and bronze), as well as highly abrasive composite materials (such as graphite, carbon-carbon materials, carbon-added phenolic, glass fiber, and porous seals material).
Single crystal diamond tools are almost exclusively used for high-precision finishing, and their extremely thin cutting capabilities can ensure extremely high dimensional accuracy. PCD and CVD diamond can be used in many of the same machining areas, but PCD is more suitable for rough machining and machining situations that require high tool fracture toughness. CVD diamond is better at finishing, semi-finishing and continuous turning. This is because it has excellent wear resistance and high hardness, and can process more precise workpieces.
(1)The condition of polycrystalline PCD and single crystal diamond under a metallurgical microscope, the lower left picture clearly shows that the edge of the blade will be jagged, while the right picture is smooth and smooth.
PCD under the microscope 100 times:
MCD under the microscope 100 times:
(2) Differences in processing:
PCD tools are composed of many fine crystals, so when turning processing, the surface of the workpiece will also show traces caused by small crystal grains.
MCD cutter can directly present the perfect state of the blade on the workpiece.
The silicon carbide substrate preparation process mainly includes raw material synthesis, silicon carbide crystal growth, ingot processing, ingot cutting, cutting piece grinding, grinding piece polishing, polishing piece cleaning, etc.Among them, the key and difficult points of preparation are mainly the crystal growth, cutting, grinding and polishing links, which are the key points and difficulties in the entire substrate production process, and become the bottleneck that limits the yield rate and production capacity of silicon carbide.
Moresuperhard provide PCD/PCBN blanks for cutting tools, laser cutting machine for cutting pcd/pcbn blanks,brazing machine for welding pcd/pcbn inserts,vitrified/resin diamond grinding wheel including cup wheel,peripheral diamond grinding wheel,cylindrical diamond grinding wheel suit your grinding machine ,CNC and manual pcd grinding machine all can we provide.Dressing solutions from Moresuperhard also available.
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Tel: +86 17700605088
