EoW May 2009

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EuroWire – May 2009 36
english technology news
The latest developments in Zwick’s ZHU/
zwicki-Line provide a new system for
classical and instrumented hardness
testing. This fully automatic universal
hardness testing system covers the
Vickers, Knoop, Brinell, Rockwell,
ball indentation and instrumented
indentation methods.
The ZHU/zwicki-Line for instrumented
indentation testing in the macro range
covers a wide range of applications
and features hardware and electronics
precisely tailored to the requirements
of hardness testing, guaranteeing high
reproducibility.
In addition to instrumented indentation
tests to determine hardness and other
material parameters, the ZHU/zwicki-Line
can perform all the classical hardness
testing methods used for metals.
Whichever method is used, the testing
system records the load-indentation
depth curve to provide additional
material assessment. The instrumented
indentation test includes elastic
and plastic deformations in order to
obtain the elastic and plastic material
characteristic values.
The core of the testing system is a
hardness measuring head, into which
the measuring systems for test load
and indentation depth plus an indentor
with hold-down device are integrated.
For optical-based hardness testing
methods to Vickers, Knoop and Brinell an
add-on unit with measuring microscope
is available. This unit is motorised in
accordance with the trend for increasing
automation and reduction of operator
influence, while indentation setting,
microscope positioning and optical
measurement of the indentation are all
performed completely automatically.
The range of compound (XY) tables
has also seen further improvements in
support surface area, test load and travel.
The new motorised tables are designed
for test loads up to 250kg and have travel
ranges up to 150mm x 50mm.
The range of applications covered by the
ZHU/zwicki-Line has been expanded to
include fully automatic Jominy testing
to ISO 642 and ASTM 255. In the Jominy
(end-quenching) test the hardness of
steel is determined by performing a
hardness profile test with the Rockwell
(HRC) or Vickers (HV30) method on a
prepared specimen.
Available from Zwick are motorised
compound tables with appropriate
Jominy tooling for three or five
standardised specimens. Testing is
carried out completely automatically with
user-friendly testXpert® II software; the
operator only has to enter the starting
points and test sequence directions.
The system is suitable for use in research
and development, production and goods
inwards testing.
Zwick GmbH & Co KG – Germany
Fax: +49 7305 10200
Email:
Website:
Innovations in hardness testing
LaserLinc has released a new model in
its Triton line of triple-axis micrometers.
The Triton360 has a 60mm measure-
ment window and a maximum of 12,000
measurements per second (4,000 per
axis). The Triton360 is designed to
providemore precise tracking of average
diameter than two-axis micrometers,
near-perfect ovality measurement, and
improved flaw detection on opaque and
clear products. The scanner can be used
for pipe, cable, hose and other similar
materials.
Two Triton360s can be arranged on a
dual-mount stand to provide six axes of
measurement, 30 degrees apart.
Measurement and flaw detection
Two Triton360s on a dual-mount stand ▲ ▲
LaserLinc Inc – USA
Fax: +1 937 318 2445
Email:
Website: