Tribological Properties for Long Stroke Cylinder Using Nano-lubricants

This paper analyzes the tribological properties and stick-slip phenomenon of the long stroke pneumatic cylinder by using nanoparticles as additives in lubricant. An innovative system, Submerged Arc Nanoparticles Synthesis System (SANSS) was used to prepare CuO and TiO2 nanoparticles, which were then mixed with lubricant. In the measurement system, a cylinder at a stroke of 2.1m was used to support a load. And a draw wire encoder was set on the measurement system to measure the position and velocity of the piston motion. The data of the measurement system were entered into the computer via A/D card and counter card. A home-made program was used to control the piston motion, save the data of the pressure and position of the cylinder, and calculate the frictional force of the cylinder. The experimental results show that using CuO and TiO2 nanoparticles as additives in lubricant can reduce the frictional force and improve the tribological properties of the cylinder in the pneumatic system.