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4/6/2014 11:56 AM
 

Superabrasive Blades “Diamond Wheels”

© Copyright Wendell Ward 2009

The term “Blade” only differs from a “Wheel” in the process or application to which it is used. Within the scope of this paper, Abrasive Blades will be considered delicate and precise tools whereas Grinding Wheels will be generally less precise and more robust in size and in application.

Superabrasive Blades “Diamond Wheels”
The term “Blade” only differs from a “Wheel” in the process or application to which it is used. Within the scope of this paper, Abrasive Blades will be considered delicate and precise tools whereas Grinding Wheels will be generally less precise and more robust in size and in application.

Superabrasive Particles

Typically Diamond or cBN powder bonded to or retained within various Carrier/Bonding systems, so that in a Grinding or Slicing/Dicing process the individual abrasive particles chip away (micro fracture) the material being Cut (Ground).

These particles are milled and/or sorted to very specific groups of sizes, shapes & inclusions, thus the particles within each group are very consistent. 

 

 

Synthetic Diamond (Superabrasive)

There are many different friabilities and shapes available for diamond particles from sharp/angular to very “blocky” (fig. #1). These crystals are created under conditions of extreme pressures and temperatures typically from a Graphite/metal catalyst (cobalt or nickel specifically) feed stock. This process yields crystals with fine metal inclusions distributed throughout the particles. These inclusions (cleavage planes) influence the Friability of the abrasive particles (the more inclusions the greater the friability).

Friability is defined as a particle’s relative ability to self sharpen through the expulsion of worn cutting facets, without dislodging the entire Abrasive particle.

 

 
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