PROGRESS IN ABRASION-RESISTANT MATERIALS FOR USE IN COMMINUTION PROCESSES

The wide range of materials used to resist wear in comminution processes is reviewed under the main categories of special steels, non-metallics, and alloyed white cast irons. Those process areas leading to the highest levels of wear are discussed in conjunction with the mechanism of abrasion and type of machinery and equipment utilized. Progress in the metallurgical development of high chromium white cast irons is highlighted. The physical properties in resisting wear are related to chemical composition and microstructure. Successful application and the financial benefits arising from the use of these alloys are demonstrated by reference to specific applications. An insight is given into the ongoing areas of research and practical aspects of development of high chromium cast irons with the emphasis on minimizing the cost of consumable wear parts.