Study on the dust environment based on tribology

Considering compatibility problem of modern mechanical product in dust environment, an analysis method for dust environment based on tribology is put forward and experimented. The experiment was done in Xi'an, a Chinese city. Dry deposition method was employed to collected fall dust outdoor, separately in April, May, July and KOSA (yellow sand storm). Deposition flux of the fall dust was studied statistically by using electronic balance with 0.1 mg resolution. 200 × FMIII ferrograph microscope was employed to analyze character diameter (minor dimension in particle's two-dimension project) and shape irregularity (ratio of major to minor dimension in particle's two-dimension project) of the fall dust particles. The deposition flux analysis result displays the non-KOSA average value is 0.515 g·m^-2. day^-1, while KOSA value 1.33 g·m^-2. day^-1. The particle analysis result shows that the average character diameter values of different fall dust (non-KOSA and KOSA) fluctuates at 17μm, The particles with average character size below 30μm account for 90%, and the particles with shape irregularity below 1.5 account for 50-60%, 2 for 80% and 3 for 90%.