Analysis of Micro-cracks and Micro-hardness in White Layer Formation on Machined Surfaces in EDM Process

Kumar, Kaushik; Rao, Ch. Srinivasa; Sateesh, B.; Viswanath, M.

doi:10.1007/978-981-15-1201-8_102

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The analysis of the subsurface layer is crucial due to the frequent occurrence of subsurface defects in the form of cracks (Guu [33], Lee [34], or Kumar [35]) that affect the correct functionality and predicted life of the manufactured component. These cracks may only be within the recast layer or may interfere with the base material.…”

Section: The Morphology Analysis Of the Surface And Subsurface Area Imentioning

confidence: 99%

Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM

et al. 2020

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Die-sinking electric discharge machining (EDM) is an indispensable technological operation, especially in the production of molds and all internal and external shapes and cavities. For this reason, the effect of machine parameter settings (open-voltage, pulse current, pulse on time, and pulse off time) on the machining of two types of steels, 1.2363 and 1.2343ESR, was carefully investigated using graphite or copper electrodes in 10 mm × 10 mm or 100 mm × 100 mm shapes. For this purpose, a two-level half factor experiment was performed with one replication at the corner points and two replications at the central points, with a total of 80 rounds. The subject of the evaluation was the topography and morphology of machined surfaces including a detailed analysis of surface and subsurface defects in the form of cracks including the creation of regression equations describing the probability of crack occurrence. Furthermore, a study of the local hardness change in the subsurface area was performed, and lamellas were also made and studied by transmission electron microscopy. It has been found that by using die-sinking EDM, it is possible to effectively predict the probability of cracking on machined surfaces and also on machine 1.2363 and 1.2343ESR steels with a very good surface quality of Ra 1.9 and 2.1 µm using graphite electrodes. These findings will ensure the production of parts with the required surface quality without cracks, which is a crucial aspect for maintaining the required functionality and service life of the parts.

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Section: The Morphology Analysis Of the Surface And Subsurface Area Imentioning

confidence: 99%

Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM

et al. 2020

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Performance and increased fatigue life for a Ti workpiece produced by the EDM process

Liu

Hsu

et al. 2022

Int J Adv Manuf Technol

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Analysis of Micro-cracks and Micro-hardness in White Layer Formation on Machined Surfaces in EDM Process

Cited by 2 publications

References 7 publications

Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM

Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM

Performance and increased fatigue life for a Ti workpiece produced by the EDM process

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