IN MILLING DIFFICULT-TO-CUT MATERIALS

Wang Min  Huang Hua  Zhang Youzhen
Nanjing Aeronautical Institute

Abstract: In this paper the temperature distribution on the tool in milling of difficult-to-out materials has been experimentally investigated by means of the method of metallographic structure changes of the high speed steel tool. The three-dimensional non-steady state temperature fields in milling has also been calculated with the finite difference method. The experimental and calculated results are in fairly good agreement. It has been revealed that on the tool flank exists a high temperature region with the shape similar to that of the crater on the tool rake face. It is the main cause of flank wear in milling difficult-to-cut materials.

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