Temperature in Turning of Compacted Graphite Iron Materials having different Physical properties and Microstructure

Paper in proceeding, 2011

The life and the performance of an insert in metal cutting are mainly dependent on the heat that is generated in the contact zone on the tool rake and on the flank face with the transient and machined surfaces. According to tool life standard the wear on the flank face is usually taken as a decision for tool life. Hence knowledge of temperature on the flank face becomes important. The temperature on the flank face has been measured in this work for different CGI materials having different microstructure and physical properties in a turning operation. It has been seen that there is no significant difference of tool temperature noticed while machining different CGI materials having hardness from (140- 236 HBW). For temperature measurement, special inserts assisted with gold-platinum thermocouple on the flank face were used. It has been noticed that the materials having 31% resultant force difference and 8-6 times tool life difference have almost same temperature on the flank face measured at different distances from the edge line of the insert.