Influence of the main technological parameters and material properties of the workpiece on the geometrical accuracy of the machined surface at wedm

Straka, Ľuboslav; Piteľ, Ján; Čorný, Ivan

doi:10.1007/s00170-021-07313-x

Cited by 18 publications

(11 citation statements)

References 38 publications

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“…High electrical resistivity and poor conductivity are exhibited by white patches surrounding pores and globules in the SEM image, which can be attributed to the best hole-machined electrode. Carbon is isolated from hydrocarbons in the dielectric medium (EDM oil), which is seen here as a dark-coloured potion, and is deposited on the machined surface, where it combines with other metallic elements to produce metallic carbide and ultimately leads to the formation of the black layer [31]. The SEM image also shows how the uneven distribution of heat and discharge energy frames the white layer thickness and forms cleavages on the electrode.…”

Section: Resultsmentioning

confidence: 99%

“…Due to limited time for debris removal, the major influence of spark energy duration starts to build a deeper crater [27][28][29]. Wire electrical discharge machining (WEDM) with molybdenum wire results in an average surface finish with fewer cracks, craters, melted droplets, and globules of debris, strong conductivity, and the capacity to cut the hard material of conductive ceramic composite [30,31].…”

Section: Introductionmentioning

confidence: 99%

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Si₃N₄–TiN conductive ceramic composites: topography on EDMed surfaces and precise drilled holes

Selvarajan

Venkataramanan²

2023

Materials Science and Technology

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In this study, it is challenging to drill a 5 mm hole in a Si3N4–TiN conductive ceramic composite, specifically when attempting to identify an association between EDM machining inputs such as current, pulse on-time, pulse off-time, dielectric pressure and spark gap and performance parameters like as Material Removal Rate, Electrode Wear Rate, Average Surface Roughness, and geometrical tolerances such as Cylindricity, Circularity and perpendicularity. The study examines the surface deformations of a composite comprising EDAX report, machined electrode and molybdenum wire following WEDM machining. Current of 5A, Pulse on-time of 9µs, Pulse off-time of 7µs, spark gap of 0.15 mm, dielectric pressure of 21.0 kg/cm2, material removal rate of 0.004214 g/min, electrode wear rate of 0.000245 g/min and surface roughness of 0.349 µm were found to be optimal. The experimental findings show that good surface finish may be attained on a copper electrode-machined surface, along with improved machining accuracy, closer geometrical tolerances and lesser anomalies.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Si₃N₄–TiN conductive ceramic composites: topography on EDMed surfaces and precise drilled holes

Selvarajan

Venkataramanan²

2023

Materials Science and Technology

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“…Rao et al reported that wire tension has an effect on kerf width and surface roughness, in addition, less surface roughness and smooth surface profiles can be obtained as a result of low current and high wire tension (Rao et al, 2020). Regarding this issue, Straka et al emphasized that the geometrical accuracy of the eroded surface has deteriorated significantly due to increasing flushing pressure (Straka et al, 2021). The "Charmill Robofil 290P" WEDM machine used in this study sprays water on the upper and lower parts of the cut area of the workpiece during cutting.…”

Section: Test Parameters and Key Findingsmentioning

confidence: 99%

WEDM ile Kesilen Sleipner Soğuk İş Çeliğinin Kesim Kalitesine Pirinç ve Bakır Tel Kullanımının Etkileri

Ceritbinmez¹,

Kanca

2022

Journal of Materials and Mechatronics: A

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Wire electric discharge machining (WEDM) is widely used in dies, punches, aerospace and automotive sectors, since materials with high hardness, and temperature resistant, which are not possible to be cut with conventional machining methods, can be cut with high precision using the WEDM method. In this study, cutting speed (mm/min), material removal rate (mm3/min), wire consume (g), machining time (sec), finish measure (mm) and surface roughness (µm) changes as a result of cutting high hardness cold work tool steel using copper and brass wire in WEDM method were investigated. In addition, worn wire and workpiece residues on the machined surfaces were detected by SEM (Scanning Electron Microscope) and EDX (Energy Dispersive X-Ray) analyzes as well as topography and composition were examined. In the case of using copper wire instead of the brass wire, wire consumption and processing time decreased by 23.30 % and 66.29 %, respectively, while MRR increased by 50 % because the copper wire electrode has higher electrical and thermal conductivity than brass wire electrode. In addition, the average dimensional deviation of the parts cut with copper wire decreased from 27 μm to 8 μm compared to the use of brass electrodes, and more precise measurements were obtained.

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“…The investigated outputs in their work were MRR, kerf width, and SR. Some of the parameters that have been frequently reviewed in articles as process outputs include material removal rate [42], geometrical accuracy [43], surface roughness [44], cutting width (kerf) [45], cutting speed [46]. In 2022, Ashish Chaudhary et al studied on the effects of adjusting machine parameters on MRR and SR for ASSAB 88 tool steel by combining RSM and full factorial method, then generation of regression based equations [5].…”

Section: Introductionmentioning

confidence: 99%

A hybrid algorithm for adjusting the input parameters of the wirecut EDM machine in order to obtain maximum customer satisfaction

et al. 2022

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This study presents an algorithm to optimally adjust the input parameters of the wirecut to align its output with the customer’s expectations. For this, AHP and QFD are used to identify and prioritize customer needs in the form of a desirability function. Then, using the Taguchi method, variance analysis, and regression, a fitness function is prepared and optimized by the multi-objective genetic algorithm. Through a case study, the proposed method is validated in terms of flexibility, simplicity, speed, cost-effectiveness, and updateability. Also, customer satisfaction is calculated for two groups of 45 people, with and without using the proposed method. The growth of the customer satisfaction index (CSAT) from 57.6 to 70.3, and the customer satisfaction score from 30.2 to 54.2, show the positive performance of the method. This converts regular customers into loyal ones. It also makes them encourages others to use the mentioned services and widen the customer network. It is clearly seen in the growth of the net promoter score from 6.67 to 31.11. All in all, it can be said that this algorithm helps the survival, profitability, and expansion of an industrial organization.

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Influence of the main technological parameters and material properties of the workpiece on the geometrical accuracy of the machined surface at wedm

Cited by 18 publications

References 38 publications

Si₃N₄–TiN conductive ceramic composites: topography on EDMed surfaces and precise drilled holes

Si₃N₄–TiN conductive ceramic composites: topography on EDMed surfaces and precise drilled holes

WEDM ile Kesilen Sleipner Soğuk İş Çeliğinin Kesim Kalitesine Pirinç ve Bakır Tel Kullanımının Etkileri

A hybrid algorithm for adjusting the input parameters of the wirecut EDM machine in order to obtain maximum customer satisfaction

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Influence of the main technological parameters and material properties of the workpiece on the geometrical accuracy of the machined surface at wedm

Cited by 18 publications

References 38 publications

Si3N4–TiN conductive ceramic composites: topography on EDMed surfaces and precise drilled holes

Si3N4–TiN conductive ceramic composites: topography on EDMed surfaces and precise drilled holes

WEDM ile Kesilen Sleipner Soğuk İş Çeliğinin Kesim Kalitesine Pirinç ve Bakır Tel Kullanımının Etkileri

A hybrid algorithm for adjusting the input parameters of the wirecut EDM machine in order to obtain maximum customer satisfaction

Contact Info

Product

Resources

About

Si₃N₄–TiN conductive ceramic composites: topography on EDMed surfaces and precise drilled holes

Si₃N₄–TiN conductive ceramic composites: topography on EDMed surfaces and precise drilled holes