Surface Roughness Analysis of H13 Steel during Electrical Discharge Machining Process Using Cu–TiC Sintered Electrode

Materials

Cherry Bhargava¹  Nitin Kumar Gupta²  Nalin Somani³  Vineet Srivastava⁴  Mayank Garg⁴  Arminder Singh Walia⁵  Chander Prakash⁶  Ketan Kotecha⁷ 

[1] Department of Electronics and Telecommunication Engineering, Symbiosis Institute of Technology, Pune 412115, India;Department of Mechanical Engineering, ABES Engineering College, Ghaziabad 201001, India;Department of Mechanical Engineering, DIT University, Dehradun 248009, India;Department of Mechanical Engineering, Thapar Institute of Engineering and Technology, Patiala 147004, India;Department of Mechanical Engineering, Thapar Polytechnic College, Patiala 147004, India;School of Mechanical Engineering, Lovely Professional University, Phagwara 144402, India;Symbiosis Centre for Applied Artificial Intelligence (SCAAI), Symbiosis International (Deemed University) (SIU), Pune 412115, India;

关键词: EDM;    cermet tooltip;    surface roughness;    dimensional analysis;    pulse current;    pulse duration;   

DOI  :  10.3390/ma14205943

来源: DOAJ

【 摘 要 】

In electrical discharge machining (EDM), the machined surface quality can be affected by the excessive temperature generation during the machining process. To achieve a longer life of the finished part, the machined surface quality plays a key role in maintaining its overall integrity. Surface roughness is an important quality evaluation of a material’s surface that has considerable influence on mechanical performance of the material. Herein, a sintered cermet tooltip with 75% copper and 25% titanium carbide was used as tool electrode for processing H13 steel. The experiments have been performed to investigate the effects of EDM parameters on the machined surface roughness. The findings show that, as the pulse current, pulse length, and pulse interval are increased, the surface roughness tends to rise. The most significant determinant for surface roughness was found to be pulse current. A semi-empirical surface roughness model was created using the characteristics of the EDM technique. Buckingham’s theorem was used to develop a semi-empirical surface roughness prediction model. The semi-empirical model’s predictions were in good agreement with the experimental studies, and the built empirical model based on physical features of the cermet tooltip was tested using dimensional analysis.

【 授权许可】

Unknown