WCA March 2007

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Dies & Die Shops
67 Wire & Cable ASIA – March/April 2007
Establishing a joint venture with Osaka
Diamond Industrial Co Ltd (ALMT
Corp) in 1998 has allowed Chyi Meei
to deliver cutting-edge solutions.
With highly stable manufacturing
technology, the product specification
is from the maximum 8mm to the finest
0.01mm. Chyi Meei is also an ISO9002
certified company, which deploy
quality assurance to deliver advanced
solutions.
Chyi Meei continually strives to meet
customer demand and has clients
in the wire electronic industry, semi-
conductor, electronic devices and
automobile to optoelectronic, optical
products and medical apparatus
businesses.
The products include natural diamond
dies, polycrystalline (or sintered)
diamond dies, shaped wire-drawing
diamond dies, guiding dies, PVF
dies, tin-coated copper dies, point
dies, diamond wheel, diamond ultra
precision cutting (UPC) and diamond
rotary dressers.
Chyi Meei Precision Industry Co Ltd
– Taiwan
Fax: +886 22657 2929
Email :
Website :
Go on, make the switch
By the mid-1970s it took a long time
and a lot of effort convincing wire
drawers to switch from inexpensive
tungsten carbide dies to the new
PCD dies. Even some of the diameter
ranges traditionally covered by natural
diamond dies were quickly replaced
by PCD dies, particularly the bigger
sizes where, beside a clear price
advantage, better performance soon
convinced the users to adopt the new
material.
PCD blanks have considerably
evolved and improved throughout
the years and there are now a wide
variety available in the market with
different dimensions, grain structures,
supported or unsupported by a metal
ring, thermally stable at temperatures
up to 1,200ºC, round blanks, square
and hexagonal.
However, when large bore size
diameters are involved, which is
synonymous of inclusion in the budget
for an expensive die, users are still
reluctant to switch from tungsten
carbide dies to PCD.
PCD dies have opened a new world
of possibilities for the wire and
cable industry. A constant and
steady production, maintaining strict
tolerances and excellent superficial
quality for much longer, are the most
important facts that are positively
considered by potential users.
A clear example is now the increased
application of ‘XXL’ PCD dies for cable
stranding and compacting. Three well-
known main PCD blank manufacturers
cover all possible diameters involved
from the small-medium sizes up to the
spectacular >ø 33.00mm.
At Temsa-Diamond, the technical
department develops and designs the
most suitable die geometry for cable
stranding and compacting, supported
by an accurate execution and perfect
final mirror polishing, thus ensuring the
expected dimensional exactness, long
die life and satisfactory performance.
Temsa-Diamond – Spain
Fax: +34 93660 0473
Email:
Website :
Chyi Meei manufacture a wide range of
products
▲
t
The PCD die blank in > ø 33.00mm size ▲