Application of single crystal diamond tools

Application of single crystal diamond tools

When processing non-ferrous materials (such as silicon-aluminum alloy), it is generally not processed by single crystal diamond tools (SCD), but processed by a high life polycrystalline diamond tool (PCD).

However, in some cases, when the surface roughness parameters are required to be severe, the single crystal diamond tool (SCD) should be used for processing. For example, when a polycrystalline diamond tool (PCD) is used to turn an aluminum piston, the surface roughness Ra can reach 15 to 50 μm, and the surface roughness can be up to Ra4 μm by using a single crystal diamond tool (SCD).

In addition, the use of SCD tools can save processing time, such as processing aluminum wheels, used to be roughed with PCD tools, and then polished, instead of SCD instead of PCD tool processing, the workpiece can achieve the surface roughness of the mirror, eliminating the need for polishing Process.


Rigorous inspection


In the high-production processing of the automotive and aerospace industries (including the processing of non-ferrous materials), the average value of the surface roughness is usually used to determine the roughness of the workpiece being processed. When the surface roughness of the workpiece is low, the Ra value is required. In general, diamond tools should be used, and the cutting edge of such a tool can be observed without a gap when the magnification is high.

After grinding, most of the PCD tools are enlarged (<50X=checked. It can be seen from the observation that the pores and edges of the individual particles of the PCD tool are jagged. To achieve the best surface roughness. (15 ~ 50μm), you can choose the appropriate geometric parameters (cutting speed, feed rate and depth of cut, etc.).

However, in some applications, the PCD blade (150x magnification) is required to have no gaps. This requirement can be achieved, but it is more difficult to make PCD tools according to the above requirements, and the manufacturing cost is higher than the standard PCD tool. 3 to 5 times, the surface roughness of the tool can be 10 to 14 μm.

The SCD tool blade is magnified 1500 times for observation, and the blade has no gap. Therefore, the tool is processed on a precision lathe, and the workpiece can achieve the surface roughness of the mirror surface.

When machining non-ferrous and non-metallic materials with PCD tools does not achieve the required machined surface roughness, it can be machined on the machining center with SCD tools, eliminating the need for a polishing process.


Diamond cutter tips


Like other tool materials, SCD tools are not suitable for every type of machining. The following points should be considered when selecting:

Cutting depth: SCD tool edge is very sharp. When machining with large depth of cut, the machining effect is not obvious enough. It depends largely on the workpiece material, cutting speed and feed rate, so when the cutting depth is greater than 0.02mm, It is not advisable to use SCD tools for roughing. It is best to use PCD tools for roughing and then SCD tools for finishing.

Workpiece materials: When processing non-ferrous metals (aluminum, copper, brass) and non-metallic materials (plastic, wood, etc.), it is best to use SCD cutters. Any iron-based materials should not be processed by SCD.


Price: SCD tool performance is superior to other advanced tool materials. It can be very economical to process with this material, but its price is very expensive. For example, the price of an SCD tool is more than 4 times that of a PCD tool. Although the price of the SCD tool is high, If the SCD tool is used correctly, it can reduce the cost of the machining process and greatly increase the production efficiency.

Loading and unloading: Diamond is the hardest material and is also very sensitive to very brittle and heat shock. The SCD blade is sharp, and any real impact (such as improper handling or tool landing) can cause cracks, cracks or damage to the blade, so the operator should be trained. In order to avoid subtle blade damage, a film member should generally be placed between the diamond tool and other components.

In short, although SCD tools are expensive and limited to the processing of certain materials, they are expensive due to their high processing efficiency, good surface roughness and long tool life.

Contact Information

Sales hotline: 0371-86545906
Technical support: +8615617785923
Fax: 0371-86545906
E-mail: Annamoresuper@gmail.com
Website: www.moresuperhard.com
Address: No.171 Zhongyuan Rd, Zhongyuan District, Zhengzhou, Henan,450001 China


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