X. Ding’s research while affiliated with Lanzhou University of Technology and other places

There is a serious face contact friction on dry gas seal ring face when it is in the start-up phase and abnormal operation, therefore, to analyze and discuss the tribology performance, the tribological test is necessary for dry gas seal dynamic and static ring. The dynamic and static spiral groove dry gas seal ring was tested to study the tribology performance under different operating mode by using the friction and wear tester with selected reasonable test conditions and the corresponding testing technology. The results of the test indicated that there was the obvious running-in phenomenon for spiral groove dry gas seal face in the special condition test. Moreover, the tribology performance of the face was changed with the test. Besides, when the rotational speed and load increased from 150 r·min⁻¹ and 226 N to 500 r·min⁻¹ and 1130 N, the wear mass loss of graphite ring was increased by 193.3% but the friction coefficient was decreased 22.3%. This showed that the self-lubrication of graphite ring affected the friction state of the seal face. Because the spiral groove end face contact was different from the smooth surface, the inner ring was more wear than outer ring of the graphite ring. The test results provided a basis for tribological performance optimization of the spiral groove dry gas seal face.