Vacuum-Suction Peening: A Novel Method for Emission-Free Shot Peening

摘要

Conventional shot peening equipment such as injector or direct pressure blast systems require compressed air of sufficient pressure and volume flow to accelerate the shot material to desired velocities at certain mass flows onto the surface of the workpieces to be treated [1, 2]. A disadvantage of these pressurized systems is that dust which production can not be avoided during shot peening is emitted to the surroundings. Therefore, in applications where the peening treatments cannot be performed in closed chambers, breathing masks and protective clothing need to be worn. In addition, noise levels caused by conventional shot peening treatments are usually high. The goal of this presentation is to introduce to the shot peening community a novel shot peening machine, the so called vacuum-suction system whose operating principle does not rely on compressed air. This vacuum-suction system has been patented [3] and one of the authors (G. P.) has received the Grant of Innovation in Brandenburg in 1998.