ParsRos Servo
Hydraulic Universal Testing Machines are high capacity systems with single test
space and suitable for tensile, compression, flexure tests on a wide range of
different materials such as round, flat and profile specimens for quality
control, product development, research or process development.
Testing systems for brittle
materials such steel or fasteners requires high stiffness load frames that
minimize the amount of deformation energy that is stored in the frame.
Servo-Hydraulic Universal Testing Machines can be controlled
via DOLI TEST & MOTION
software that installed on the PC connected to the
Control Unit.
Servo-Hydraulic Universal
Testing Machine can carry out tensile and yield, compression, flexure tests
with load and displacement
controls.
The main characteristics are;
Rigid 4 columns construction
providing superior axial and lateral stiffness and precision alignment,
Closed-loop servo controlled
hydraulic power pack for accurate test control,
High speed electronic
control and data acquisition unit for accurate test results,
Single test space design
with convenient vertical testing clearance,
Double acting servo-actuator
mounted on top of the crossbeam
Actuator with anti-rotation
system to prevent the natural tendency of the actuator to rotate.
Long piston stroke for the
most convenient and easy adjustment and testing of different sample lengths,
Digital displacement
transducer for the best positioning and measuring accuracy
Easy calibration procedure,
Doli Test & Motion
Software for easy using,
Chrome plated columns for
easy cleaning and longest life.
Wedge Actions Grips
Grip control system mounted
on the frame
Compression platens or
bending devices may be fixed directly into wedge grips,
Limit switch on the piston
as well as the safety limit valves on the hydraulic system,
Servo-Hydraulic Universal
Testing Machine is consisting of Load Frame, Advanced servo controlled
automatic power pack,
Electronic Control Unit and Material Testing Software as standard.
Depending to standards and requirements,
Video extensometers, Automatic Extensometers, Clip-On
Extensometers, Flexure,
Compression Test Apparatus,
High Temperature Cabinets
and Multifunctional Remote Control Hand Set can be integrated on the Servo Hydraulic
Universal Testing Machine.
|
FRAME
|
The double acting servo actuator, which is
integrated on the upper crosshead, has a long piston strokewhich makes vertical
testing space accessible for easy and efficient testing of different samples
lengths. Load cell for measuring the load is mounted between lower grip and
base plate.
Displacement transducers that mounted in the piston
are used for displacement measuring.
External Extensometers (Video extensometers, Long
Travel Extensometers, Automatic Extensometers or Clip-On Extensometers) can be
synchronously used for displacement measurements if required.
|
OPTIONS
|
Standard
Extensometer
Clip-On Type Extensometers, 50 mm gauge length, 25
mm travel, 0,01 mm accuracy,
Clip-On Type Extensometers, 50 mm gauge length, 0,001
mm accuracy,
Clip-On Type Extensometers can measure the
displacement directly from the specimens.
Automatic
Extensometers
Automatic Extensometer, 10-300 mm gauge length, 0,1
μm accuracy. These kind of extensometers are fully automatic computer-controlled
and used for flat and round specimens with different measurement distance. By
means of high sensitivity it can even used on very delicate materials.
|
LOAD
MEASUREMENT
|
By means of full bridge strain gage
load cell mounted on the lower base
• Robust design to withstand
eventual overloads
•
High accuracy to allow for machine Class 1/ISO 7500- 1 from 2 to 100% of its
nominal capacity
• High repeatability and linearity
design
|
SAFETY
|
Machines
are designed to cover and follow with fidelity all the requirements demanded by
standards and regulations.
An
push buttom, mushroom type is located in front of the working frame for
emergency stop.
|
HYDRAULIC
SYSTEM
|
Load application is made by means
of a hydraulic piston, located within the machine frame. To
generate the pressure, a
servo-hydraulic power unit, is comprised.
The high pressure power unit is
tight fitted and pollution-proof, with very low noise.
Regulating the flow of hydraulic
fluid (and hence the charging rate) is performed by means of a high
performance servovalve mounted on a
manifold (hydraulic distributors).
The power pack assembly, manifold
and servo valve is located inside of a work desk and rests on a
set of four bumpers which prevent
the transmission of vibrations to the frame.
The working desk is made with
aluminum fully paneled in painted steel sheet with epoxy finish for high
corrosion resistance.
HYDRAULIC
GRIPS
Hydraulically operated grips
completely stop the possibility of sample sliding from the grips
enabling for correct and definite
strain measurements. Hydraulic grips are very safe and user
friendly. Hydraulic grips come with
grip sets for pulling 8 – 32 mm diameter cylinder samples. The
hydraulic grips has an independent
hydraulic power unit with a working pressure of 400 bars. Jaw
faces for flat samples should be
ordered separately.
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