Peterka: Comparison of machining of poly-crystalline cubic boron nitride
by rotary ultrasonic machining and laser beam machining in terms of shape geometry.
Ranking next to diamond on the hardness scale, polycrystalline cubic boron nitride
(PCBN) has proven to be a durable tool material for cutting hard-to-machine metals such as high-temperature and hardened ferrous alloys.
On this scale, diamond's hardness is around 100 gigapascals (GPa) of pressure, while cubic boron nitride
has a hardness of 50 GPa.
PCBN, on the other hand, is a synthesized mass of randomly-oriented cubic boron nitride
(CBN) particles, bound by a ceramic binder phase.
Cubic boron nitride
is a synthetic material consisting of boron and nitrogen atoms in a tetrahedral arrangement.
The Walter Corporation has acquired Werner Schmitt, a German company that specializes in the development and manufacture of PCD (polycrystalline diamond) and CBN (cubic boron nitride
And made from very tough stuff: PCD (Polycrystalline Diamond) and PCBN (Polycrystalline Cubic Boron Nitride
What happens when a manufacturer of grinding wheels (Universal Superabrasives) takes the most advanced glass bonding technology of its parent company (Saint-Gobain Abrasives) and applies it to the most advanced cubic boron nitride
(CBN) grains commercially available?
Werner Schmitt develops and produces PCD (polycrystalline diamond) and CBN (cubic boron nitride
In the last two decades, Iscar has developed advanced cutting tool materials for applications such as interrupted cutting (milling, parting, and drilling) and continuous cutting operation (turning and threading) for hard materials, employing ceramics, cubic boron nitride
(CBN), and tough sub-micron substrates with exclusive coatings and defined geometries.
CBN (cubic boron nitride
) tools machine hard steels to 66 HRc, as well as hard castings, Inconel, Monel, and Stellite.
Potential presenters of papers on developments in super-hard materials, such as diamond, cubic boron nitride
, polycrystalline diamond, and other superabrasives, are invited to submit their proposals for Intertech 2003, the international technical conference to be held in Vancouver, British Columbia, July 28-August 1, 2003.