
Polycrystalline Diamond (PCD) tools & Tungsten Carbide Tools
www.primatooling.co.uk
Prima Tooling
4 - 6 Tallon Road
Hutton Industrial Estate
Brentwood
Essex
CM13 1TJ
United Kingdom
Tel: +44 1277 260340
Fax: +44 1277 260341
Standard tools or 1-off specials can be tipped to produce Polycrystalline Diamond (PCD) tools, Tungsten Carbide
(TCT) tools or High Speed Steel tools (HSS).
PCD tools
Prima Tooling produce a wide range of tools and once you buy PCD tooling from them, you'll find that they are
happy to give advice on the installation and running of this tooling. And they will back this up with reliable
maintenance, the complete service.
PCD drills are polycrystalline diamond tools that have been popular in the aerospace industry because of their
long life cycles
Tungsten carbide tools, first developed in Germany in the 1920s, produced such advanced steel-milling grades
they revolutionised most industries by the 1930s, when carbides containing both titanium and tantalum were
introduced. A variety of hard metals were then further developed in response to the demands of the emerging steel,
mining, and manufacturing industries.
A composite material itself, carbide, in combination with the binder cobalt, can be formulated for specific
hardness and bending strength ratios. Now, by including chromium, nickel, and other metals to carbide formulas,
developers can custom-produce tool base materials according to very specific user requirements and preferences for
hardness, toughness, and wear, as well as the ability to accommodate precise cutting geometries. Most recently,
innovators have increased cutting edge sharpness substantially by using smaller grain size, and by controlling
grain growth during the sintering process (Forming a coherent bonded mass by heating metal powders without
melting).
TCT Tools
TCT tools now reduce friction along the entire tool surface, lowering cutting edge temperatures and greatly
extending tool life, to the equivalent or exceeding that of PCD tools. Diamond coating has always enabled the tool
to smoothly and quickly penetrate aerospace composite materials, for example, without causing delamination, which
is the separation of layers within the composite material.
HSS Tools
There is a trade-off between tool life and production speed.
High speed steel tools have always presented an opportunity for designers as time has gone on to balance the
time the components being processed are heat treated, to balance high material hardness against cutting time and
tool fatigue. The competitiveness of tools is rooted in this equation.

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