空気噴射式ショットピーニングにおける粒子速度の測定と解析

概要

論文の詳細を見る
The shot velocity in two pneumatic shot-peening machines has been examined by means of experiment and theory. The shot velocity was measured under various operating conditions by a high-speed shutter TV camera. As a result, the shot velocity over the usual range of shot diameter D, shot density p, and air-pressure p was related by the formula, V=K・D^α・ρ^β・(p+p_b)^γ, where P_b is atmospheric pressure. α and β are almost independent of the shot-peening machine, and α ≈ 0.36, β ≈ 0.48, K and γ are dependent on the shot-peening machine. On the other hand, the theoretical consideration based on hydrodynamics tied to the derivation of the formula, V=K・D^<-0.44>・ρ^<-0.44>・(p+p_b)^<0.43> for the suction type machine, and almost the same formula for the direct-pressure type. The theoretically derived formula coincided well with the experimentally induced formula.
社団法人日本機械学会の論文
1994-03-25