Hh. Masjuki et Ma. Maleque, THE EFFECT OF PALM OIL DIESEL FUEL CONTAMINATED LUBRICANT ON SLIDING WEAR OF CAST IRONS AGAINST MILD-STEEL, Wear, 198(1-2), 1996, pp. 293-299
The effect of various percentages of palm oil diesel (POD) fuel contam
inated lubricants on the wear characteristics of cast irons during sli
ding contact was investigated. This was done on three types of cast ir
on, namely spheroidal graphite, flake graphite and chilled cast iron a
gainst a mild steel disc configuration using a pin-on-disc type of fri
ction and wear apparatus. The lubricants used for the test specimen we
re Mach 5 SAE 40 with various percentages of POD. For comparison purpo
ses, pure diesel engine lubricant oil and pure palm oil diesel were al
so used as lubricants. The test conditions were as follows: pressure,
1 MPa; sliding speed, 0.2 m s(-1); sliding distance, 56 km; room tempe
rature, approximate to 30 degrees C. It was observed that the addition
of 5% palm oil diesel into the engine lubricant improves the performa
nce of the lubricant in terms of anti-wear characteristics, reducing t
he wear rate of cast irons. The use of pure commercial (0% POD contami
nation) lubricant resulted in a moderate wear rate, whilst pure POD (1
00%) lubricant produced the highest wear rate compared with the other
combinations of contaminated lubricants.