Abstract:

The effects of broaching conditions on tool wear and surface integrity in cutting TC9 titanium alloy with broaches made of three kinds of high speed steel, P18, M2A1 and M42, are discussed. The proper cutting speed and geometry for each of them are recommended which have been testified in production practice to be suitable for enhancing the machining effeciency and improving the quality of products. Tests have also been made on broaching TC9 titanium alloy with H19 carbide broach at increased speed. The characteristics of tool wear and surface integrity under two cutting conditions are compared. Finally, it is considered what specific measures should be taken to improve the surface integrity of titanium alloy in broaching.