Tool life of coated tools in face milling of GH4169 at various cutting speeds

摘要

GH4169 is widely used in aerospace industry, and it is a typical difficult-to-cut material. Tool life in cutting GH4169 is very low. In this paper, tool life tests of face milling GH4169 were carried out at 30~90m/min with coated tools. The effects of cutting speed and feed rate on the tool life were studied. It was found that the tool life was very sensitive to the cutting speed. And tool failure mode was flank wear at low cutting speed, but turned to tipping at high cutting speed. At last, the suitable cutting parameters were recommended.