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Technical Information
Contains information about:
Speeds and Feeds
Troubleshooting
Application Examples
Calculators

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WHAT IS POLYCRYSTALLINE DIAMOND?

Diamond is the hardest, most abrasive-resistant, material known to man. These properties make diamond an ideal cutting tool. Within the crystal structure, however, fracture planes, used by the diamond cutter to produce the gem diamond from the rough, can cause catastrophic breakage of the tool edge, when subjected to impact.

DR-PCD tools incorporate Polycrystalline Diamond blanks produced under conditions of high pressure (1 million PSI) and temperature (1700 Degrees C), similar to those of diamond synthesis. Randomly orientated, carefully selected synthetic diamond crystals are grown together on a hard metal substrate. This results in a material with the hardness, abrasive resistance and high thermal conductivity of diamond with the toughness of hard metal. Using the hard metal substrate the PCD blank is brazed to a carrier, either steel or hard metal, and machined by grinding or E.D.M to produce the cutting edge.

When compared to other cutting tool materials, there are three main reasons for using DR-PCD tools:

  •  Increased tool life results in reduced tool cost per component and less idle machine time.
  •  Increasing cutting speed improves productivity through reduced cycle times.
  • Other less productive machining methods can be replaced by DR-PCD  
RECOMMENDED SPEEDS AND FEEDS FOR:
POLYCRYSTALLINE DIAMOND

RULE OF THUMB:  
Use standard carbide guidelines to start and then increase cutting rates.

PCD
SPEED
(SFM)
FEED RATE
(IPR)
DEPTH OF CUT
(INCH)
ALUMINUM
ALUMINUM(5-8% S1)
ALUMINUM(8-12% S1)
ALUMINUM(14-18% S1)
COPPER
BRONZE
BRASS
BABBIT
CARBON
GLASS FIBER
CARBON COMPOSITES
SINTERED CARBIDE
HIGH ALUMINUM CERAMICS
WOOD AND COMPOSITES
3000-5000
4000-6000
3000-5000
1000-3000
750-1500
1000-1250
2000-4000
800-1200
500-1000
750-1000
500-2000
30-50
1200-2400
8000-13000
.005- .008
.010- .020
.005- .015
.002- .010
.003- .008
.003- .008
.003- .010
.003- .010
.005- .015
.001- .010
.005- .015
.004- .006
.001- .004
.010- .010
.005- .020
.005- .020
.005- .020
.003- .015
.005- .020
.005- .020
.005- .020
.005- .020
.005- .030
.001- .002
.010- .100
.0005- .005
.0005- .005
.010- .100

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