Categories of Diamond Tools
Published:2014-05-29 02:53:03    Text Size:【BIG】【MEDIUM】【SMALL

Categories of Diamond Tools

There are thousands kinds of diamond tools. They can be categorized by their application and their production methods.


Classified according to application

If categorized by application, there are diamond cutting tools, diamond grinding tools,, diamond drilling tools, diamond profiling tools , etc.


Classified according to production method

According to the production methods or bond types, diamond tools can be categorized to the following way:

Metal-bonded diamond tools: The tools' bonding material is metal mixture powder. The functional parts of the tool are usually diamond segments. These tools include metal-bonded diamond saw blades, diamond grinding cup wheels, diamond core drill bits, etc. For metal-bonded diamond tools, the bond is one of the prime factors when selecting which tool to use for cutting or grinding a specific material, depending on how hard or abrasive the material is. The bond used dictates the rate at which the metallic powders wear down and expose new diamond crystals at the surface, thereby maintaining an abrasive cutting surface. Different bond strengths are achieved by the alloy mix of metallic powders chosen and how much heat and pressure are applied to the sintered segment.

Resin-bonded diamond tools: The tools' bonding material is mainly resin powder. An example of this tool is the resin-bonded diamond polishing pads used in the construction industry.

Ceramic-bonded diamond tools: The tools' bonding material is usually glass and ceramic powder. This tool usually has the features of good chemical stability, small elastic deformation, but high brittleness, etc.

Plated diamond tools: This tool is made by fixing the diamonds onto the tool's base via electroplating method or via CVD (Chemical Vapor Deposition) method. This tool can usually be made to good processing precision.

Polycrystalline Diamond (PCD): They are normally made by sintering many micro-size single diamond crystals at high temperature and high pressure. PCD has good fracture toughness and good thermal stability, and is used in making geological drill bits.

Polycrystalline Diamond Composite or Compacts (PDC): They are made by combining some layers of polycrystalline diamonds (PCD) with a layer of cemented carbide liner at high temperature and high pressure. PDC has the advantages of diamonds high wear resistance with carbides good toughness.

High-temperature brazed diamond tools: This tool is made by brazing a single layer of diamonds onto the tool via a solder at a temperature of over 900 °C. This tool is a newly developed product. Its manufacture uses technologies include vacuum brazing and atmosphere-protected brazing. This tool has several advantages: the solder can hold the diamonds very firmly, the single layer of diamonds' exposed height can be 70%80% of their sizes, and the diamonds can be regularly arranged on the tool.


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