STUDY ON CUTTING PERFORMANCE OF MAN-MADE DIAMAND FOR MACHINING NONFERROUS METAL

摘要

The cutting performance of polycrystal diamond (PCD) for machining nonferrous metal of aluminum and silicon alloy has been experimentally investigated. It is shown that the cutting performance of homemade PCD tool is almost the same as the import tool for machining aluminum silicon alloy, and the homemade PCD tool can fulfill the requirement of manufacture. This result has practical significance for automobile industry to reduce the tool cost. There is also a compare of the cutting performance between thick-film CVD diamond tools (TFD) and cemented carbide when using these two kinds of tools to machine some special nonferrous metal (pure Tungsten and pure Molybdenum) which are generally considered very hard to be processed. There are also some other experiments which have been done to measure the roughness of machined workpiece surface for cutting four kinds of metal including pure copper, copper alloy and pure titanium by diamond tool and cemented carbide. The data got from the experiments showed that the machining suitable of using diamond tool is better than using cemented carbide.