Test Method
For evaluation of the lubricity of diesel fuels using a high-frequency reciprocating rig (HFRR). A 2-mL test specimen of fuel is placed in the test reservoir and maintained at 25 or 60°C. When the temperature has stabilized, a vibrator arm holding a non-rotating steel ball and loaded with a 200-g mass is lowered until it contacts a test disk completely submerged in the fuel. The ball is caused to rub against the disk with a 1-mm stroke at a frequency of 50 Hz for 75 min. The ball is removed from the vibrator arm and cleaned. The dimensions of the major and minor axes of the wear scar are measured under magnification and recorded.
Specifications
Conforms to the Specifications of:
ASTM D6079, D7688; ISO 12156; IP 450; EN 590; CEC F-06-A
Contact Geometry:Ball on Plate (Point Contact)
Stroke:20 microns to 2 mm
Frequency:10 Hz to 200 Hz
Test Load:1 N to 10 N through dead weights
Frictional Force:0 to 10 N
Temperature Range:Ambient to 150 °C
Test Disc Size:10 mm dia. x 3 mm thick
Test Ball Size:6 mm diameter
Power supply:230V 50Hz 30A
Alat Laboratorium Umum