Granite micro-hardness and abrasive machinability

Diamond tool manufacturer and granite processor often cope with quite difficult selection of tool specification and machining parameters when processing various granite types. The bulk value H and deviation D of granite micro-hardness were proposed in order to investigate abrasive machinability of granite via drilling, grinding and sawing by the use of abrasive tools. Experimental results showed that there exist good correlation between granite micro-hardness parameters (H, D) and abrasive machining performance. It may be used to predict machinability and chose machining parameters for various types of granite.