Turek Paweł, Budzik Grzegorz, Sęp Jarosław, Oleksy Mariusz, Józwik Jerzy, Przeszłowski Łukasz, Paszkiewicz Andrzej, Kochmański Łukasz, Żelechowski Damian
Faculty of Mechanical Engineering and Aeronautics, Rzeszów University of Technology, 35-959 Rzeszów, Poland.
Faculty of Chemistry, Rzeszów University of Technology, 35-959 Rzeszów, Poland.
Polymers (Basel). 2020 Dec 17;12(12):3029. doi: 10.3390/polym12123029.
An important factor having an impact on the condition of machine parts is their surface topography. For instance, in the production of a molded element in casting or injection molding processes, the surface topography of the molding cavity has a significant impact on the surface condition of the product. An analysis of the wear of a mold made with the PolyJet technique was performed in this work, and we examined the surface topography using the stylus method after casting a wax model of the turbine blade. The surface topographies showed a gradual degradation of the mold cavity surface. After the manufacture of 40 castings, there was a significant deformation of the microstructure of the mold cavity. The maximum height value (Sz) parameter had the most dynamic change from 18.980 to 27.920 μm. Its growth dynamics are mainly influenced by maximum peak height (Sp) rather than the maximum pit height (Sv) parameter. In the case of the root mean square height (Sq) and arithmetic mean height (Sa), their gradual increases can be seen from 2.578 to 3.599 μm and from 2.038 to 2.746 μm. In the case of the value of the skewness (Ssk) parameter, a small positive skew was observed. As for the kurtosis (Sku) values, the distributions are clearly leptokurtic.
影响机器零件状况的一个重要因素是其表面形貌。例如，在铸造或注塑成型工艺中生产模制元件时，模腔的表面形貌对产品的表面状况有重大影响。在这项工作中，对采用PolyJet技术制造的模具的磨损进行了分析，在铸造涡轮叶片蜡模后，我们使用触针法检查了表面形貌。表面形貌显示模腔表面逐渐退化。在制造40个铸件后，模腔的微观结构发生了显著变形。最大高度值（Sz）参数的变化最为显著，从18.980μm变为27.920μm。其增长动态主要受最大峰值高度（Sp）而非最大凹坑高度（Sv）参数的影响。对于均方根高度（Sq）和算术平均高度（Sa），可以看到它们从2.578μm逐渐增加到3.599μm，从2.038μm逐渐增加到2.746μm。对于偏度（Ssk）参数的值，观察到一个小的正偏度。至于峰度（Sku）值，分布明显为尖峰态。
