Analysis of Hole Taper, Recast Layer and Heat Affected zone in pulsed O2 and N2 laser drilling of Difficult-to-cut alloy Nimonic C-263

3rd International Conference on Materials and Manufacturing Engineering 2018

Ezhilarasan, C.^1 ; Velayudham, A.^2 ; Nagaraj, M.^3 ; Anburaj, R.^4

Department of Mechanical Engineering, SMK Fomra Institute of Technology, Kelambakkam, Chennai

602103, India^1

CVRDE, Avadi, Chennai

600054, India^2

Department of Mechanical Engineering, MNM Jain Engineering College, Chennai

603103, India^3

IITM, Chennai

600032, India^4

关键词: Aero-engine components;    Aerospace components;    Drilled holes;    Drilling parameters;    Hole Taper;    Laser drilling;    Nimonic C-263;    Recast layer;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/390/1/012036/pdf
DOI  :  10.1088/1757-899X/390/1/012036

来源: IOP

【 摘 要 】

The quality and performance of the drilled component is of prime importance in the development of aero-engine components and are directly related to the quality of HAZ, Recast Layer and Hole taper. In order to maintain and/or improve the reliability of aerospace components, it is first essential to be aware of the possible damages that can be imparted to a material when it is drilled. Therefore, an attempt has been taken to investigate the effect of laser drilling parameters such as Gas Type: O2, N2; Power: 3200Watts, 3900Watts and Pressure: 4 bars, 5 bars, while laser drilling the Nimonic C-263 super alloy. Laser drilling trails have been conducted with different combinations of drilling parameters. The quality of the drilled holes such as Hole Tapper, HAZ and Recast Layer were evaluated quantitatively and analyzed through scanning electron microscope (SEM).