WEAR RESISTANT, HIGH-IMPACT, IRON ALLOY MEMBER AND METHOD OF MAKING THE SAME

摘要

A wear resistant, high-impact iron alloy member (20, 22) suitable for use in an impact rock crusher and a method of making the same. The invention provides a white iron alloy member (20, 22) having at least one wear surface (24) with carbide granules encapsulated in a matrix (28) of white iron and contained in a selected region adjacent the wear surface (24) of the member (20, 22). The iron alloy member is made by a method of casting comprising the steps of: placing a molding insert (35, 40) in a mold (60) at a selected location adjacent the wear surface (24); positioning a quantity of carbide granules (29), most preferably tungsten carbide granules (29) in the molding insert (35, 40) before pouring; and pouring molten white iron alloy into the mold (60) to form the casting. The tungsten carbide granules (29) are substantially contained at a selected location by the molding insert (35, 40), and the resulting casting (20, 22) can be heat treated and cooled to provide a component for a rock crusher or the like which exhibits improved resitance to wear.