Investigation of Dry Sliding Wear Behavior of Different Diamond Segments with Response Surface Methodology

In this study, it is aimed to determine the dry sliding wear resistance of marble cutter, concrete cutter, and granite cutter segments, which are frequently used as stone cutter segments in the industry. Load, sliding speed, and abrasive ball variables were used in the wear tests since the diamond segments are exposed to different types of stress at the places of use. The experimental design was determined according to the central composite design (CCD) method, which is connected to the Response surface methodology (RSM) instead of performing too many tests. Although the segments contain equal amounts of diamond, it has been determined in the wear tests that they show different wear resistance depending on the other elements they contain. The highest wear resistance was seen in the concrete socket, while the lowest was in the granite socket. Contrary to expectations, the highest wear losses occurred in tests with steel balls, which are the softest abrasive. This situation, caused by the diamond particles separating from the sockets and embedded in the relatively soft surface of the steel ball, also played a role in the high coefficient of friction. Delamination, plastic deformation, wear, and oxidation-type wear mechanisms were observed in SEM and EDS analysis depending on the matrix properties of the abrasive ball and diamond segment. According to RSM analysis, the models obtained for all different types of diamond segments were found to be important.