REMOVING SURFACE COATINGS AND CONTAMINATION

摘要

An apparatus wherein an auxiliary liquid source acts on an abrasive stream to increase the velocity of substantially the whole of the abrasive stream downstream from the blast nozzle (3) in a water pressurised wet abrasive blast machine. The apparatus permits the introduction into the abrasive stream, via an aerodynamically designed insert assembly (2), of a water jet which may be an ultra high pressure water jet with the objective to increase the mean velocity of the wet abrasive particle stream from 200m/sec to approximately 600 m/sec before it enters the blast or acceleration nozzle (3) in order to increase the blasting work rate.