| Summary: | Background. Water with a powder material is used as a working tool for hydroabrasive
treatment. The quality of treatment and the service life of the equipment depends
on the surface’s characteristics and the shape of the abrasive material’s particles, which is subject to a number of significant requirements. The cost of materials
is quite high. The purpose of the work is to establish the possibility of reuse of abrasive
material.
Materials and methods. The main machining medium in experiment was the
abrasive GMA 80 MESH TR (technical requirements) 3986-00176245879–2011
with the grain size of the main fraction 0.8 mm. Work piece was 20 mm thick sheet
of aluminum alloy D16 State Standart 17232-99. The computer simulation program
“Kompas 3D” was used for ASCON.
Results. During hydroabrasive treatment, the radii of the grain protrusions,
which are the main characteristic of the profile’s abrasive ability, significantly
change. This leads to a reduction in their cutting capacity and the need to correct the
hydroabrasive cutting technology to ensure the required cutting quality. However,
when the grains are destroyed, new edges with different geometric characteristics
are formed, which creates prerequisites for maintaining the grain’s performance.
Conclusions. Changes in the parameters of abrasive grains in powder for hydroabrasive
treatment after a working cycle are analyzed to determine the possibility of
its reuse. The theoretical prerequisites for the change in the characteristics of the cut
surfaces when reusing grain are stated
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