PARTS FOR CRUSHING AGGREGATES COMPRISING A METAL MATRIX WITH AN INTERNAL CERAMIC INSERT AND THE PRODUCTION METHOD THEREOF

摘要

The invention relates to parts for crushing aggregates comprising a metal matrix with an internal ceramic insert. The invention is characterised in that the metal matrix is made from white cast iron which is highly alloyed with nickel-chromium or chromium molybdenum close to the eutectic composition. Each insert is made from white corundum with a minimum Al203 purity percentage of 99 %. Said inserts form a body having a smaller thickness than that of the part, with n rows of perforations disposed on the front thereof and flanges projecting out from the side faces along the height of same. The invention is suitable for use in metal founding with ceramic reinforcements.