On the Simulative Experiment to estimate Wear Rate of Cermet Tools (1st Report)

In recent years, many cermet tools possessing different cutting performance have been placed on the market. A great deal of cutting test must be conducted on the cermet tools to know their performance. To save the time and materials consumed, it is recommended to develop a new test method to estimate the cutting performance of tools. Therefore, the virgin surface wear test has been developed to simulate the wear process of the tool. The results obtained were as follows. (1) Sliding speed of the specimen was selected to generate the same interface temperature that the cutting edge is exposed at any cutting speed of interest. (2) Good correlation was obtained between virgin surface wear test and actual cutting test at the condition above mentioned. (3) Tool life curve can be estimated by combining virgin surface wear test and actual cutting test conducted in few minutes. (4) Wear mechanisms observed on the flank wear land of the cermet tools can be classified into three types according to the cutting speed (cutting temperature).