TEKNIKER HAS CARRIED OUT THIS STUDY WITH THE AIM OF REPRODUCING THE WEAR MECHANISMS OF THE SEALING SYSTEM OF A HIGH SPEED PNEUMATIC HAMMER UNDER DIFFERENT OPERATING CONDITIONS.
Through this analysis, fatigue, extrusion and thermal degradation were identified as the main failure mechanisms.
Seals are critical elements of a variety of industrial products. The aim of this study, carried out by the Tekniker technology center, member of the Basque and Research Technology Alliance (BRTA), was to reproduce the wear mechanisms for the sealing systems of pneumatic hammers to know how to respond to each type of seal and material under actual working conditions.
To address this study, a specific test chamber was designed to test piston seals at a linear velocity of 6 m/s and pressurised with compressed air. During the wear testing, the pressure in the chamber and the temperature in the sleeve were monitored with the aim of measuring possible leaks and frictional heating, respectively, during the test. Fatigue, extrusion and thermal degradation were the main failure mechanisms identified. The results of this analysis have their application in different sector such as transport, energy, capital good and machine tools.