The test results show that the microstructure of the high chromium cast steel is: tempered martensite + eutectic carbide + retained austenite + secondary carbide, its impact toughness is higher than that of the high chromium cast iron, and the other mechanical properties are equivalent
After the laboratory test of high chromium cast steel, the high chromium cast steel liner of this material was used in the ball mill. The liner was installed in the first chamber of the Φ 2.4 × 13 m ball mill. Ten high manganese steel liners and ten high chromium cast iron liners imported from a certain country were installed in the same mill. After 17 months of operation of the ball mill, the data measurement showed that the thickness of the liner of high chromium cast steel was worn by 1.5 mm, Compared with the same machine, the liner of high manganese steel can no longer be used. The liner is removed and weighed. The abrasion of cement per ton produced by the liner of high chromium cast steel is 14.72 g, that of cement per ton produced by the liner of high manganese steel is 67.65 g, and that of cement per ton produced by the liner of high chromium cast iron is 67.65 / 14.72 = 4.59. The abrasion of cement per ton produced by the liner of imported high chromium cast iron is 18 G
High chromium cast steel is a kind of wear-resistant material for ball mill with low alloy consumption, good mechanical properties, stable process and high wear resistance. Compared with the high manganese steel liner used in China and the imported high chromium cast iron liner, it has not only good wear resistance, but also low cost and high cost performance, especially suitable for making the liner of ball mill.