Reduction zone, bearing and the exit of a PCD die
The significant increase in accuracy with these new
methods give die manufacturers as well as wire
producers, the possibility to notably improve their
production process. The standard equipment only
determines the angle and bearing length, leaving
information as to how the results were obtained
unaccounted for.
With the new method of the DIAM 6, not only will
the measurements be displayed, but also the actual
form of the reduction angle and of the bearing.
Precise and accurate calculations!
In reality, these are often not straight lines, but more
or less larger curves, which in respect to bearings will
have an effect on die life and can affect properties of
the wire.
Image A shows a straight cylinder (bearing) and
image B below hardly a cylinder at all, but mostly
a radius. Results from conventional die checking
methods will read the same for both, when in fact
they do not correspond with reality.
Many drawing die producers and wire manufacturers,
like to have the wire entry area in the die made to a
specific shape or “Fingerprint” as illustrated in Image
C with a smaller angle before the cylinder (bearing)
of the die. These specific shapes play a decisive part
with respect to die quality, wire resistance and wire
surface.
It is possible to determine die shapes, with proper
measurement results and have them reproduced
independently from the operator experience. With
this instrument, wire manufacturers have been given
the ability to design their own drawing die shape and
most of all, the ability to check those measurements,
accurately!
.
Top to Bottom: Image A, B and C
WIRE NEWS September 2019 13