An Investigation of Tool Life and Surface Roughness in End Milling Nickel-based Superalloy Mar-M247

作者：Kuo Chu Pao^*; Chen Shao Hsien; Su Sen Chieh; Lin Chi Der

来源：Journal of the Chinese Society of Mechanical Engineers, 2010, 31(4): 325-333.

• Mar-M247
• tool life
• surface roughness
• end milling

This paper describes an experimental investigation on the influence on tool life when end milling the difficult to cut material Mar-M247, which is one of a family of nickel-based superalloys that are used for gas turbine applications requiring high temperature strength. The series tests were carried out using carbide inserts to evaluate the effect of varying cutting speed, feed rate, depth of cut, tool coating material, and tool geometry on tool wear, tool life, and workpiece surface roughness. It is observed that tool life is very sensitive to the various combinations of the cutting parameters and does not always decrease as the cutting speed and feed rate increase, as might be expected. The results also show that round inserts improve cutting performance in comparison with square ones due to the stronger cutting edge that aids crater and notch wear.

• 出版日期2010-8