Abrasion-Resistant White Cast Iron 12
2.3 Manganese white cast iron
Manganese series white cast iron mainly has two types: medium manganese and high manganese type. Manganese (Mn) (5% ~ 6%) in general by the normalized processing. High manganese (11% Mn) require high temperature normalizing treatment, make the carbide network breaking secondary carbide precipitation. As a result to improve its wear resistance performance and toughness. The hardness of medium manganese HRC is 57 ~ 63, αk was 3.9 to 9.8 J / cm2 .The HRC of high manganese is about 40. the former is 319 ~ 918J/cm2, and αk was 25 ~ 50 J / cm2.High manganese cast iron is mostly used to manufacture crusher tooth plate (jaw plate) and other anti-wear parts, and its life span is 113~115 times higher than that of high manganese steel.
2.4 Hard nickel cast iron
China introduces Ni-Hard1 #, 2 # and # 4 cast iron, mainly used in the production of the superfluous pump, such as pump case, impeller, shield, inhalation sheath and other cast iron.
2.5 High chromium white cast iron.
Since the early 70 s in China carried out the research work of high chromium white cast iron. And also has established a complete series of high chromium materials. Like grinding balls, lining board, composite rolls and more than 100 kinds of wear-resistant castings use the material. And shows good anti-wear performance. In table 4 listed the main composition and properties of high chromium white cast iron commonly used in China.