Abrasive grains distribution in high-pressure abrasive-water jet used for surface treatment

The paper presents properties and operational conditions for a high-pressure hydro-abrasive jet used for surface treatment. Methods of the assessment of abrasive grain distribution in such a high-pressure jet are discussed in. Basing on experiments and analytical consideration, dependences occurring between grain's traces distribution after hitting the surface and grains distribution inside such a jet were evaluated. Formulas derived on that let to calculate grains number and their distribution in a jet basing on their traces left inside the surface after single jet spray passage upon treated material. The present findings illustrate conditions necessary to form the hydro-abrasive jet with the most favourable distribution of abrasive grains conditioning the efficiency of surface treatment.