Increasing Cutting Tool Life when Machining Inconel 718
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Abstract Machining of Inconel 718 is still very problematic. During the machining the cutting edge is stressed by high temperature and pressure in a small area. So it is important to use fluids with high pressure and a very accurate and high quality cutting wedge. When cutting inserts are used we can do this by special internal cooling systems and special inserts. When a monolithic cutter is used the options for it are not broad when standard machines are used. Main aim for the increasing of the cutting tool life is in the cutting edge microgeometry which is designed by special processes after grinding or after deposition of the thin layer. When the special edge modification is used the cutting edge has high quality, an identifiable edge radius and better roughness on the back and rake area and identifiable K factor. For the good deposition of the thin layer and longer tool life of a monolithic cutting tool it is important to have an optimal value of the radius. When all parameters have optimal values, this can prolong cutting tool life.
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