Surface Topography of Inconel 718 Alloy in Finishing WEDM

Buk, Jarosław

doi:10.12913/22998624/142962

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…WEDM is particularly suitable for processing complex profile products made from heat-resistant nickel alloys, providing both accuracy and surface quality. The material removal from the craters depends on various EDM process parameters, including discharge current (I, A), discharge voltage (U, V), pulse duration (Ton), pulse off time (Toff), workpiece material, and electrode tool material [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Study of Wire-Cut Electro-Discharge Machining of Heat-Resistant Nickel Alloys

Ablyaz,

Shlykov,

Muratov

et al. 2023

Materials

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This paper presents an analysis and theoretical model for assessing the quality and accuracy of wire-cut electro-discharge machining (WEDM) of products made from novel heat-resistant nickel alloys such as CrNi56KVMTYB. It is observed that WEDM processing of Ni alloy led to high surface roughness for the thick specimens, and electrical parameters such as pulse duration for the selected range depict an insignificant role in the value of surface roughness. On the other hand, the cut width of the machined surface decreases as the pulse duration increases, while the cut width is elevated for thick workpieces. Secondary discharges developed in WEDM have negative effects that cause sludge adhering and deterioration in the quality and productivity of processing. The regression model is developed to predict the surface roughness and cut width of machined surfaces, which holds significant importance in modern engineering. The workpiece is examined for surface integrity and material deposition. It is observed that an increase in the height of the specimen leads to the occurrence of secondary discharges, which in turn results in the formation of cracks on the surfaces of high-temperature nickel alloys. These cracks have a detrimental effect on the performance of critical products made from next-generation heat-resistant nickel alloys.

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Section: Introductionmentioning

confidence: 99%

Study of Wire-Cut Electro-Discharge Machining of Heat-Resistant Nickel Alloys

Ablyaz,

Shlykov,

Muratov

et al. 2023

Materials

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“…In addition to using basic surface roughness parameters, which are well-known and widely used, surface quality can also be evaluated based on the Abbott-Firestone curve and parameters describing this curve. The use of these parameters is a different approach to surface texture evaluation, one that can effectively be employed to evaluate the quality of surfaces obtained by different machining methods [33] to [35]. Material ratio curves were used, for instance, in the paper [36].…”

Section: Introductionmentioning

confidence: 99%

Surface Quality of AZ91D Magnesium Alloy After Precision Milling with Coated Tools

Korpysa,

Kuczmaszewski,

Zagórski

2023

sv-jme

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This study investigates the surface quality of AZ91D magnesium alloy specimens after precision milling. The milling was conducted with the use of TiB2- and TiAlN-coated carbide end mills. The following variables were used in the milling process: cutting speed vc, feed per tooth fz and axial depth of cut ap. The surface quality was analysed based on surface roughness parameters and Abbott-Firestone curves. The results showed that the surface quality after machining depended on the tool coating type and applied machining parameters; the only exception was the axial depth of cut because changes in its value did not have any significant effect on the obtained surface quality. After precision milling, AZ91D specimens were characterized by very low surface roughness parameters. The impact of machining conditions was also evaluated with ANOVA analysis, which confirmed the significant effect of cutting speed and feed per tooth. It also indicated the dependence of the roughness parameters on the tool coating type. The tool coating type and machining conditions did not have any significant effect on the Abbott-Firestone curves. Despite the changes applied, the shape of the curves remained similar. The obtained results provide both theoretical and practical knowledge about the achievable surface roughness of AZ91D magnesium alloy specimens after precision milling.

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“…In the production of micro parts, the properties of the surface topography will have even more influence on the fatigue strength. Research conducted so far on WEDM of the Inconel 718 alloy [ 43 , 44 , 45 ] has shown that many factors have an influence on the surface roughness and the material removal rate. Relatively few studies [ 46 , 47 , 48 ] have described the influence of the parameters of micro-WEDM on the surface topography’s properties.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Prediction Models of the Microwire EDM Process of Inconel 718 Using ANN and RSM Methods

2022

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Precise machining of micro parts from difficult-to-cut materials requires using advanced technology such as wire electrical discharge machining (WEDM). In order to enhance the productivity of micro WEDM, the key role is understanding the influence of process parameters on the surface topography and the material’s removal rate (MRR). Furthermore, effective models which allow us to predict the influence of the parameters of micro-WEDM on the qualitative effects of the process are required. This paper influences the discharge energy, time interval, and wire speed on the surface topography’s properties, namely Sa, Sk, Spk, Svk, and MRR, after micro-WEDM of Inconel 718 were described. Developed RSM and ANN model of the micro-WEDM process, showing that the discharge energy had the main influence (over 70%) on the surface topography’s parameters. However, for MRR, the time interval was also significant. Furthermore, a reduction in wire speed can lead to a decrease in the cost process and have a positive influence on the environment and sustainability of the process. Evaluation of developed prediction models of micro-WEDM of Inconel 718 indicates that ANN had a lower value for the relative error compared with the RSM models and did not exceed 4%.

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Surface Topography of Inconel 718 Alloy in Finishing WEDM

Cited by 9 publications

References 31 publications

Study of Wire-Cut Electro-Discharge Machining of Heat-Resistant Nickel Alloys

Study of Wire-Cut Electro-Discharge Machining of Heat-Resistant Nickel Alloys

Surface Quality of AZ91D Magnesium Alloy After Precision Milling with Coated Tools

Evaluation of Prediction Models of the Microwire EDM Process of Inconel 718 Using ANN and RSM Methods

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