Abstract
Sliding wear properties of neat polychlorotrifluoroethylene against SUS 304 stainless steel surface, which are indispensable for predicting service life of gaskets used in the swivel-type joints on LNG loading arms, were investigated at the temperatures of the ambient (20°C) and LNG (-162°C). The effects of contact pressure, sliding speed and sliding distance on the amount of wear loss were analyzed by applying the Rhee-type wear equation. Through regression analysis, the Rhee-type wear equation for the stable sliding wear condition range was approximated as follows:
(1) At the ambient temperature, 20°C:
W1=2.09×10-7P2.35V3.38t1.44
PV<20MPa·mm/sec
(2) At LNG temperature, -162°C:
W2=1.60×10-12P1.05V3.50t2.29
PV<240MPa·mm/sec
where W is the wear loss (mg/cm2), P is the nominal contact pressure (MPa), V is the sliding speed (mm/sec), t is the sliding time (min), and PV is the PV factor (MPa·mm/sec).
