Page 36 - Tungaloy Catalog

PCD (T-DIA)

Polycrystalline Diamond Compacts (PCD), T-DIA
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Diamond is the hardest known material on the earth. This is an advanced diamond
based tool material where tiny diamond crystals are tightly sintered on the
Non-ferrous cemented carbide alloy base by means of a super high pressure and temperature
Grades process. When compared to the single crystal diamond, the hardness is slightly
Increasing wear resistance (hardness) Increasing impact resistance (toughness) DX180 DX160 DX140 DX120 DX110 and orientation. PCD is therefore the optimum choice for cutting non-ferrous and
reduced but PCD is uniform in its structure. Additionally the heat resistant
performance of a single crystal diamond can differ according to the crystal quality

non-metal materials.
Polycrystalline diamond layer

Cemented carbide substrate

Structure of T-DIA

Grain size Hardness Strength
Application Grades Microstructure (µm) (Hv) (GPa) Features

Super fine grain T-DIA grade for superior surface
finish.
DX110 < 1 8500 1.8 Excels in cutting edge sharpness and produces
consistently high quality surface finish, resulting
from gradual wear resistance.
For precision machining of non-ferrous metals and
nonmetals where high quality surface finish is required.
DX120 4.5 9000 1.8 Features the finest grain structure in T-DIA
series and excels in grindability and cutting edge
sharpness.
Used for machining of non-ferrous metals and
nonmetals.
DX140 12.5 10000 1.7 Composed of medium and fine grain diamond,
Non-ferrous provides moderate wear resistance and
grindability.
Can be used for machining half sintered ceramics
and cemented carbides, stones and non-ferrous
DX160 28 11000 1.6 metals.
Mixed sintered compact composed of large and
fine grain diamond.
Grindability is superior to that of DX180.
Suitable for turning half sintered ceramics and
DX180 45 12000 1.5 cemented carbides.
Features the highest purity levels with large grain
PCD for excellent wear resistance.

Regrinding method
Wheel Diamond wheel

Bond Vitrified bond
Roughing: #400 ~ 600
Grain size
Finishing: Finer than #1000
Concentration 100 ~ 125

Grinding speed 900 ~ 1200 m/min

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