Abstract:
It is very meaningful to investigate the temperature rise, friction torque, leakage of mechanical seal through experiments. In this paper, a mechanical seal testing device was established to measure the tribology performance of mechanical seal under various operating conditions. The PTFE and ductile iron materials were taken as the friction pair of mechanical seal. The tribology performance was measured such as temperature rise, friction torque and leakage. The test indicates that the temperature growth rate increases with the increase of rotational speed and spring pressure. The coefficient of friction increases with the increase of rotational speed and spring pressure, and is basically unchanged when the speed reaches 2 000 r/min. The leakage raises up when the rotational speed and medium pressure grows up, and decreases rapidly when the spring pressure increases, and becomes almost constant when the spring pressure reaches 0.22 MPa.