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.
Moresuperhard provide quality cnc diamond grinding wheel for grinding rotary cutting tools.1A1,1V1,11V9,12V9 abrasives grinding wheel suit for anca,walter,ewag cnc grinding machine.1. Suitable for high-efficiency grinding processing with rapid feed.2. Good wear resistance and shape retention.3. It has good self-sharpening properties, generates less heat during grinding, reduces burns on the workpiece, and meets the high-precision requirements of the tool.4. No clogging, easy to trim, extend the trimming cycle and reduce processing costs. 5. The cutting edge quality of the grinding workpiece is consistent and the smoothness is high, which ensures stable quality when processing downstream products.
At present, the main diamond processing methods include mechanical polishing, thermochemical polishing, tribochemical polishing, laser polishing, ion beam polishing and chemical mechanical polishing.Due to the anisotropy of diamond, "hard" and "soft" polishing directions have completely different material removal rates.Experimental results show that atomic-level roughness values can be obtained in a shorter time by mechanical polishing in the crystallographic directions <100> and <110> or in another direction deviating from <110> at an angle not exceeding 20°.
Add: Zhongyuan Rd, Zhongyuan District, Zhengzhou, 450001, Henan, China
Tel: +86 17700605088
