Analysis of the Influence of Surface Integrity of Cemented Carbides Machined by Sinking EDM on Flexural Fatigue

Bergs, Thomas; Petersen, Timm; Tombul, U.; Klink, Andreas

doi:10.1016/j.procir.2020.02.096

Cited by 4 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The surface roughness of UMG01, the small grained and binderfree material is significantly smaller for all compared surface conditions. As described by Bergs et al [22], this difference cannot entirely be attributed to the smaller grain size. For the roughed specimen, the white layer, which consists of molten and resolidified material, is significantly larger than the largest protruding WC grains.…”

Section: Resultsmentioning

confidence: 65%

Coefficient of friction of cemented carbides machined by sinking EDM

Petersen

2023

Materials Research Proceedings

View full text Add to dashboard Cite

Abstract. Cemented carbides possess properties that predestine them as a durable tool. However, these properties hinder conventional machining, which is why Electrical Discharge Machining (EDM) is a promising alternative. Three different EDMed cemented carbides were compared with a ground surface in a pin-on-disk test setup. They were evaluated under dry and lubricated conditions with two distinct antibody materials. The tests did not reveal a correlation between the surface roughness of the cemented carbide pins and the coefficient of friction. However, some test sets yielded very different results, which is why particular considerations should be made with new sliding compositions.

show abstract

Section: Resultsmentioning

confidence: 65%

Coefficient of friction of cemented carbides machined by sinking EDM

Petersen

2023

Materials Research Proceedings

View full text Add to dashboard Cite

show abstract

“…Apart from the discharge energy, the pulse type also affects productivity and surface roughness [23] . The formation of white layers and thermal cracks, which cause bending fatigue in cemented carbide, is reduced at lower discharge energies [24] . Previous studies used only single-step discharge energy.…”

Section: Introductionmentioning

confidence: 99%

A Response Surface Methodology to Optimize Multiple Discharge Step Parameters for Sinking Electrical Discharge Machining

Kim

Byun

Jeong

et al. 2021

Preprint

View full text Add to dashboard Cite

Conventional die-sinking electrical discharge machining (EDM) employs a single electrode operating under constant discharge conditions. We explored a two-electrode scenario, in which roughing and finishing were coupled. We developed a multiple discharge step (MDS) method that uses three discharge depths. The discharge current is highest in step 1 and lowest in step 3. Response surface methodology (RSM) was employed to optimize the discharge conditions. Experimentally, the MDS method combined with RSM decreased electrode edge wear and surface roughness compared to the conventional method, with no increase in the average discharge current.

show abstract