Sample preparation
Achieving reproducible measurement results from test samples
We have a wide range of appropriate equipment such as grinding, polishing, drilling, and milling machines and saws to achieve the desired surface quality, sample geometry, and dimensional accuracy.
The Zehntner ZAA 2300 made by Proceq is an universal thin film applicator. The bed is heated, and so higher viscosity system can be handled.
Films can be made up to the length of 400 mm and 300 mm width.
Analog display
Length of the film: up to 400 mm
Width of the film: up to 300 mm
Temperature of the heated bed: 150 °C
Drawing speed: ZAA2300 1 mm/s – 90 mm/s
– Metkon SERVOCUT 402-AA-AX Wet Chamber Cutting Machine
– Disk diameter 400 m
– Automatic cutting
– 600-2400 rpm
– Table speed 1 µm/s – 3 mm /s
– Laser positioning & Quick Clip
– Table dimension width:
o Z-axis 255 mm
o X-axis 150 mm
o Y-axis 300 mm
For punching out samples from soft (non-rigid) materials by means of punching knives (steel) and a pneumatic punching system in accordance with international standards (ISO, ASTM and other equivalents) and customer-specific requirements.
Location: University of Bayreuth
Contact: M. Sc. Florian Schönl
Phone: +49 921 55 7512
E-mail: florian.schoenl@uni-bayreuth.de
The CNC sample saw is suitable for the semi-automatic production of shoulder bars and other specimens according to DIN, ISO, ASTM, or special dimensions in smaller quantities. A wide range of geometries can be realised via its Edi-Tasc 3D control. A spray rinsing device ensures uniform cooling of the workpieces and thus perfect cut edges.
Speed range [1/min] 2,000 to 16,000
Motor output [W] 250
Collet chuck diameter [mm] 0.5 to 4
Working range [mm] x-axis approx. 560, y-axis approx. 270, z-axis approx. 60
Drilling / workpiece height [mm] 60 / 180
Milling capacity [mm] aluminium up to 2, plastics up to 4
Features
Spray mist and suction device
Software
Edi-Tasc 3D
Location: University of Bayreuth
Maximum force [kN] 130
Maximum surface load [MPa] 80
Maximum temperature [°C] 500
Maximum piston stroke [mm] 50
Hotplate dimensions [mm] 160 x 160
Location: University of Bayreuth
The Diadisc circular saw is used for a variety of machining tasks. It is used both for pre-machining samples before the subsequent milling or grinding process, and for producing notched samples for the notch impact test. A spray mist device ensures optimum cooling of the materials.
saw blade diameter [mm] 125
Features
- diamond saw blades
- solid carbide saw blades with various teeth
- V-groove saw blade (for CT specimens)
- V-groove saw blade (for notched bar impact specimens)
- spray mist device
- suction device
- motorised table feed
Location: University of Bayreuth
Features
Automatic timer, pressure variation
Location: University of Bayreuth
The Variable Speed Rotor Mill PULVERISETTE 14 is used for the preparation of temperature-sensitive samples. These can be comminuted, as the thermal load on the material to be ground is reduced by fast, effective grinding. Samples that are difficult to grind, such as styrenes, polyesters, synthetic resins, films, PVC, PP, and PE, can be embrittled, e.g. by adding liquid nitrogen, and then ground to analytical fineness.
A very fast-running rotor with moulded ribs comminutes the sample by impact. In addition, sharp-edged teeth together with the inserted sieve cut the sample by shearing. In the final comminution stage, the sample is stressed by friction between the rotor and sieve.
Regulated rotor speed [U/min] 6.000-20.000
Frequency [Hz] 50-60
Absorbed power [W] 1150
Sieve insert [mm] 0,5; 1,0; 2,0
Grinding tool
Lock rotor
Location: University of Bayreuth
The unit with its working area of 1,300 x 1,300 mm² is mainly used for the preparation of samples from a wide range of materials.
Since FLOW MACH2 has a maximum cutting jet pressure of 3,800 bar, and the use of abrasive materials is possible, almost all materials – from plastic foam to high-strength steel – can be cut. In addition, the system has an engraving function that enables direct specimen marking. The integrated “UltraPierce” piercing aid prevents the cutting jet from running off at the starting point of the cutting line. This leads to perfect cutting results accurate to +/- 0.1 mm/m and a reproducibility of 0.8 mm, especially when machining fibre composite components.
Contact: Robin Fachtan
Phone: +49 921 507 36 210
E-mail: robin.fachtan@nmbgmbh.de
Property of Neue Materialien Bayreuth GmbH
Location: Neue Materialien Bayreuth GmbH