Research on the Residual Stress of the Machined Surface of Cutting Superalloy under High Pressure Cooling

Abstract

High pressure cooling assisted cutting has certain advantages in cutting difficult materials such as superalloy. Therefore, the residual stress on the machined surface of superalloy is studied with the application background of high pressure cooling cutting. Firstly, the formation mechanism of the machined surface residual stress was analyzed. Then, the influence mechanism of high pressure coolant on the residual stress of machined surface was studied. Finally, it is concluded that the maximum residual compressive stress in cutting depth direction of cutting superalloy under high pressure cooling should be less than that of dry cutting by theoretical analysis and experimental research.

Keywords:

• Superalloy
• surface quality
• residual stress
• cooling and lubrication

Additional information

Funding

This project is supported by National Natural Science Foundation of China (Grant No.51475128), the Natural Science Foundation of Heilongjiang Province of China(E2016043), and the Center of Engineering Technology of Harbin (2014ADAG003).