Energy Efficient Technology of Obtaining Advanced Composite Grinding Materials and Tools in "Silicon Carbide – Corundum" System from Aluminium-Containing Residual Products

Abstract

A promising composite material for the production of abrasive tools has been obtained. It is a set of numerous cutters of silicon carbide in corundum matrix. In such grains, the destruction of crystals – microcutters is localized at the border of the phases constituting the composition, which provides for the strength of the grain. This grain is promising for the use in power and rough grinding.The analysis of the results of physico-mechanical tests of these samples showed that they exceed silicon carbide and corundum in terms of microstrength. Their two-phase structure in action has greater plasticity and suppresses fractures in their motion.The molded products were subjected to heat treatment; after visual inspection and removal of unsuitable samples and wheels the strength and hardness of the finished products were tested.It was established that the obtained composite material can be used in the manufacturing of abrasive tools on ceramic and bakelite bonds, in the framework of the existing technology of production.It was also found that the grinding ability of the wheels of the obtained product is 30% higher than that of silicon carbide and fused alumina.The studies have revealed that the establishment of an abrasive based on corundum and silicon carbide is very promising.