Study on the Influence of the Main Parameters of Pellets Distribution and Settlement in the Passage of Shot Blasting

Abstract

The simulation of separation and settlement under two kinds of flue gas channels in the new dust removal method of shot peening is studied. By using FLUENT software and orthogonal experiment method of four factors and three levels, the influence of different velocity, pellet density, pellet size and velocity difference on the settlement rate of primary settlement channel is analyzed. The results show that the layout of flue gas channel has a significant impact on the mechanical settlement mode, which is mainly reflected in the impact of the density on the shot, and the shot density is the leading factor in several factors studied. Under the same flue structure, when the material density of the pellets is increased, the sedimentation rate of pellets can be increased, so the pellets are easier to be removed. In the process of free settlement, when the velocity of flue gas is increased, the migration path of pellets carried by flue gas increases, which is unfavorable to the removal of pellets. Therefore, the high density and inertia separation method is preferred in dust removal of shot blasting.