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Effect of Conventional and Ecological Dielectric on the Wire Electrical Discharge Machining WEDM Process on AISI-D3 Steel

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Part of the Lecture Notes in Electrical Engineering book series (LNEE,volume 763)

Abstract

AISI-D3 steel is in high demand in the industry to manufacture special tools, dies and stamping tools. WEDM machining is an efficient alternative process for cutting steels that are difficult to machine by conventional processes. However, its parameters must be properly adjusted to achieve an adequate level of machining performance. This document analyzes the influence of a conventional and ecological dielectric on the cutting surface of an AISI-D3 steel workpiece under the controlled parameters of the WEDM process. A DOE was applied using a 24 full factorial design to evaluate the roughness and surface hardness HRC (response variables). The main factors and their significance that affects the response variables were identified through an experimental analysis and ANOVA. Applying SEM on the cut surface, the topography and diffusion caused by the cut were analyzed. The current, the feed rate and the dielectric are factors that affect the surface roughness, obtaining a minimum Ra of 3.86 µm. For HRC the significant factors were current and dielectric, where the ecological dielectric had a greater impact on surface hardness, consequently a benefit is obtained in steel wear.

Keyword

  • Wire electrical discharge machining (WEDM)
  • Design of experiments (DOE)
  • ANOVA
  • Ecological dielectric
  • Roughness (Ra)
  • Rockwell hardness (HRC)

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Acknowledgment

Thanks to the Technical University of Ambato, the Mechanical Engineering laboratory and the Steel Engineering company for their total support in carrying out this study.

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Correspondence to Cristian Pérez-Salinas .

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Pérez-Salinas, C., Molina-Molina, D., Ramirez-Gangotena, L. (2021). Effect of Conventional and Ecological Dielectric on the Wire Electrical Discharge Machining WEDM Process on AISI-D3 Steel. In: Botto Tobar, M., Cruz, H., Díaz Cadena, A. (eds) Recent Advances in Electrical Engineering, Electronics and Energy. CIT 2020. Lecture Notes in Electrical Engineering, vol 763. Springer, Cham. https://doi.org/10.1007/978-3-030-72212-8_3

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