2.4 Low-magnification analysis In order to further analyze the material quality of the dia90 mm low chromium cast grinding ball, the sample was taken at the fracture position parallel to and close to fracturing by electric spark cutting method. The sample was polished by grinding wheel and heated to about 70 °C in 50% hydrochloric […]
2.3 Metallographic test With the hardness mentioned above test samples, the metallographic samples were prepared near the fracture point, polished and polished without erosion at 100-fold optical. Non-metallic inclusions were detected under the microscope. The results are shown in Table 2 and Figure 2.
LU Weidong , SHEN Maolin , ZHOU Yuanxing (Institute of Ningguo Wear Resistant Materials General Plant Anhui Province, Ningguo 242300 , China) Abstract: The cracking of the 90mm low chromium casting ball occurred too early in the drop ball test. The casting ball material was analyzed by chemical composition, mechanical properties, and metallographic structure. The […]
Abstract: The heat treatment process of chrome alloy full casting ball was analyzed, the heat treatment process curve was determined, and the specific measures to improve the wear resistance of high chromium cast ball were put forward. Keywords: high chromium grinding media balls, heat treatment, abrasive resistance Cheng Huajing , Zhangwei (Ma Anshan Dongyou steel […]