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Comparative Analysis of the Effect of Machining with Wire and Ceramic Brushes on Selected Properties of the Surface Layer of EN AW-7075 Aluminium Alloy
This work was financed from the funds of the Ministry of Education and Science by Agreement
No. DNK/SP/513880/2021 of 22 December 2021, the project “14th School of Machining and the 43rd
Scientific School of Abrasive Machining”, under the programme “Perfect Science”.
In the cutting process, when the cutting edge leaves the material, burrs are often formed on the edges of the
workpiece. Due to inconveniences associated with burrs, such as problems with properly fixing the workpiece
on the machine for further processing or problems with parts working in assemblies, deburring operations must
be performed. In addition to that, burrs may pose danger for workers at the production stage and for customers
at the stage of using the finished product. One of the popular deburring methods is brushing. Apart from deburr-
ing, brushing can be used to change surface layer properties. The aim of this study is a comparative analysis of
the effect of machining with wire and ceramic brushes on microhardness and the surface quality of EN AW-7075
aluminium alloy. Results show that, for all defined brushing conditions, lower surface roughness parameters are
obtained when using ceramic brushes rather than wire brushes. In contrast, the use of wire brushes leads to in-
creased microhardness of the surface layer.
