Akademik Veri Yönetim Sistemi
6 th INTERNATIONAL CONFERENCE ON LIFE AND ENGINEERING SCIENCES, Antalya, Türkiye, 2 - 05 Kasım 2023, ss.94-95
Today, with the development of defense and aerospace industries, the importance of nontraditional manufacturing technologies is gradually increasing. Since there is no significant
temperature factor in the abrasive water jet (AWJ) cutting process, which is one of the nontraditional manufacturing methods, the deterioration in the microstructure of the steels is at a
minimum level, and thus providing the mentioned advantage of the method in abrasive water
jet cutting of steels. The surface roughness of the machining surfaces in AWJ cutting of steels
is one of the important performance factors affecting the use of the method. In this study, the
cutting performance of high sulfur free-cutting steel and structural steel with an abrasive
water jet was investigated. Two free-cutting steels with different sulfur content (11SMnPb30
and 11SMnPb37) and one structural steel (S235JRG2) were tested to determine the effect of
sulfur content on surface roughness. A full factorial experimental design (L27) was created
according to three different levels of the experimental parameters determined as abrasive
mass flow rate, traverse speed and sulfur content ratio. ANOVA (analysis of variance)
analyses were performed according to the results of the average surface roughnesses
measured with a contact type surface roughness measuring device. Thus, all experimental
parameters were found to have a significant effect on surface roughness. According to the
changes in parameter levels, it was observed that the average surface roughness decreased as
the sulfur content in the material increased. In addition, the average surface roughness
increased as the traverse speed increased and the abrasive mass flow rate showed two
different trends as the parameter level increased.