Tribological behavior of ceramic surface layers of ring and box spinning machines aluminum elements rubbing against yarn

The paper deals with the influence of hard anodizing coatings on ring and box spinning machines aluminum elements rubbing against the yarn upon the wear of these parts and the quality of the yarn. The process of hard anodic oxidation substantially increases the durability of the chosen parts of spinning frames; i.e, the spindles and rotors. For example, the wear intensity of collecting groove of the rotor without the oxides coating was found to be of 0.42 m/h, after about 6000 h of work, while after the process of anodic oxidation it decreased to 0.0022 m/h. On the other hand, in case of a ring spinning frame the wear intensity of the surface of the spindle coat neck without the oxides coating amounted to 0.068 m/h, while after anodic oxidation it decreased to 0.00048 m/h.