Investigations of Surface Roughness with Cutting Speed and Cooling in the Wear Process during Turing GH4133 with PCBN Tool

Abstract:

The high temperature strength of Ni-based superalloys coupled with excellent corrosion resistance make them ideal for aerospace applications. However, the difficulty in finish machining superalloys with the carbide tools presents the short tool-life. Polycrystalline Cubic Boron Nitride (PCBN) is potential to machine superalloys. To data, there are many researches about PCBN tool wear, but only little papers showing how the surface roughness and the wear speed are influenced by cutting parameter and the coolant during the differences periods of PCBN tool wear. This investigation has been conducted to show that the PCBN tool wear is slower with cooling that without cooling during cutting superalloys with PCBN tool especially in VB up to a certain value. It is shown that tool fracture can be reduced by using the cooling. In the process of PCBN tool wear, in addition, there are some differences of the effect of the cooling for roughness Ra values.

• Periodical: Key Engineering Materials (Volumes 589-590)
• Pages: 258-263
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.589-590.258
• Online since: October 2013
• Authors: Wei Ji, Xian Li Liu, Fu Gang Yan, Sheng Lei Xiao, Meng Chao Fan
• Keywords: Cooling, Cutting Speed, PCBN, Superalloy, Surface Roughness (SR)

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