Oscillation friction-measuring instrument

 
Section though the oscillating friction-measuring instrument

Detail of the oscillating friction-measuring instrument

 
Wear curve

 
Wear factor

Oscillating friction-measuring instrument

Wear tests of material specimens

Operating principle

The specimens for the test are screwed to the piston rod by a specimen support, and slide in oscillating movement on the mating surfaces. The mating surfaces are pressed to the specimens at a defined power, and guided by a linear guiding system in accordance with the wear pf the specimens.

The measuring-value recording and editing program determines:

• Friction force
• Contact force
• Wear curve
• Sliding speed
• Test duration
• Wear factor

 

Advantages when compared to conventional friction-measuring instruments:

• Near-praxis wear tests at oscillating movement
• Simultaneous measurement at several specimens
• Wide variation range of the test conditions
     - Contact force
     - Sliding speed
     - Temperature of the mating surfaces
     - Gases: air, H2, N2 and natural gas
• Stroke 130 mm
• Max. mean sliding speed 6 m/s

 

Technical data

Dimensions and weights
Size of specimen	tubular specimen, d = 8 mm x 10 mm length rectangular specimen, 7 x 7 mm, 10 mm length
Number of specimens	four (at least two / opposite position)
Mean sliding speed	1 to 6 m/s (variation by engine speed)
Contact force	50 to 500 N
Temperature of the mating surfaces	80 to 200 °C
Temperature in the measuring chamber	max. 70 °C
Pressure of the measuring chamber	max. 2 bar (abs)
Dimensions	HBT 1700 x 600 x 1000 mm
Weight	approx. 850 kg
Power connection
Power supply	400 V, 3 ~ N, 50 Hz
Fuse	63 A
Pneumatic connection / nitrogen	1 to 6 bar

Range of application

 

Determination of the wear parameters of materials in dry run under the influence of different gases, as e.g. hydrogen or natural gas

Product sheet: PDF