Influence of the of electrical discharge alloying methods on the surface quality of carbon steel

Spadło, S.; Młynarczyk, P.; Łakomiec, K.

doi:10.1007/s00170-016-9168-1

Cited by 21 publications

(7 citation statements)

References 10 publications

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“…Precyzyjną obróbkę przeprowadza się z wykorzystaniem najwyższej jakości narzędzi ściernych [11]. W foliach ściernych do wygładzania ziarna ścierne są utwierdzane na podatnym nośniku w warstwie spoiwa żywicznego [4].…”

Section: In Order To Determine the Micro-finishing Abilities Of Diamond Abrasive Films Surface Topography Was Analyzed Using Confocal Micunclassified

Determining the diamond lapping films’ ability to micro-finishing

et al. 2018

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In order to determine the micro-finishing abilities of diamond abrasive films, surface topography was analyzed using confocal microscopy OLS 4000 Olympus. In the analysis of stereometric features of the abrasive surface, it was considered that during the micro-finishing process the abrasive surface is pressed against the workpiece. The procedure for determining the changes in topography of the film surface in the treatment area was developed as a result of elastic deformations of the film carrier, the grain binding binder and the pressure roller. New parameters for the activity of abrasive grains were developed and the values of grain hollows, depending on the pressure value in the machining zone and the nominal size of the grain (3, 9, 15, 30 μm) were determined.

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Section: In Order To Determine the Micro-finishing Abilities Of Diamond Abrasive Films Surface Topography Was Analyzed Using Confocal Micunclassified

Determining the diamond lapping films’ ability to micro-finishing

et al. 2018

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“…The shape and depth of the craters directly affect the surface roughness of the workpiece and strictly depend on the technological parameters of EDM, which determine the amount of material removed from the crater during a single electric discharge. The main factors that affect the surface roughness of the workpiece and the material removal efficiency are current intensity I c , discharge voltage U c , electrical discharge time t on , time interval t off , the physical properties of the tool and the workpiece, and the type of liquid or gaseous dielectric [34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Impact of Graphite Electrodes Grain Size on Technological Parameters and Surface Texture of Hastelloy C-22 after Electrical Discharge Machining with Negative Polarity

Nowicki,

Oniszczuk-Świercz,

Świercz

2024

Materials

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Electrical discharge machining (EDM) is a rapidly evolving method in modern industry that manufactures highly complex components. The physical properties of a tool electrode material are significant factors in determining the effectiveness of the process, as well as the characteristics of the machined surfaces. The current trend of implementing graphite tool electrodes in manufacturing processes is observed. Innovative material engineering solutions enable graphite production with miniaturized grain size. However, the correlation between the graphite electrode grain size and the mechanism of the process removal in the EDM is a challenge for its widespread implementation in the industry. This research introduces a new method to evaluate the impact of the graphite electrode grain size and machining parameters on the material removal effectiveness, relative tool wear rate, and surface roughness (Ra) of Hastelloy C-22 following EDM with negative polarity. The study utilized new graphite materials with a grain size of 1 µm (POCO AF-5) and 10 µm (POCO EDM-180). An assessment of the impact of the EDM process parameters on the technological parameters and the development of the surface roughness was carried out. Electrical discharge machining with fine-grained graphite electrodes increases process efficiency and reduces tool wear. Graphite grains detached from the tool electrode affect the stability of electrical discharges and the efficiency of the process. Based on the experimental results, mathematical models were developed, enabling the prediction of machining effects to advance state-of-the-art manufacturing processes. The obtained mathematical models can be implemented in modern industrial EDM machines as guidelines for selecting adequate machining parameters depending on the desired process efficiency, tool wear rate, and surface roughness for advanced materials.

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“…The properties of the changed layers have a strong influence on abrasion resistance, hardness, corrosion resistance, resistance to thermal shocks, coating quality and more. Improving the quality of the surface Metals 2017, 7, 550 2 of 16 integrity after the EDM process can be realized by electro discharge mechanical alloying [15,16], laser surface modification [17][18][19][20][21], the use of powders in dielectric [22,23], hybrid-machining [24], or coatings [25,26]. Research conducted in the field of EDM technology focuses primarily on a better understanding of the physical phenomenon of the process [27,28], monitoring the machining [29,30], improving surface quality and the material removal rate [31,32], optimization of process technology [33][34][35][36], analyses of surface layers properties [37,38] and new methods of forming difficult to manufacture materials [39].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Surface Layer Properties of High Thermal Conductivity Tool Steel after Electrical Discharge Machining

Świercz

Oniszczuk-Świercz

2017

Metals

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New materials require the use of advanced technology in manufacturing complex shape parts. One of the modern materials widely used in the tool industry for injection molds or hot stamping dies is high conductivity tool steel (HTCS) 150. Due to its hardness (55 HRC) and thermal conductivity at 66 W/mK, this material is difficult to machine by conventional treatment and is being increasingly manufactured by nonconventional technology such as electrical discharge machining (EDM). In the EDM process, material is removed from the workpiece by a series of electrical discharges that cause changes to the surface layers properties. The final state of the surface layer directly influences the durability of the produced elements. This paper presents the influence of EDM process parameters: discharge current I c and the pulse time t on on surface layer properties. The experimental investigation was carried out with an experimental methodology design. Surface layers properties including roughness 3D parameters, the thickness of the white layer, heat affected zone, tempered layer and occurring micro cracks were investigated and described. The influence of the response surface methodology (RSM) of discharge current I c and the pulse time t on on the thickness of the white layer and roughness parameters Sa, Sds and Ssc were described and established.

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Influence of the of electrical discharge alloying methods on the surface quality of carbon steel

Cited by 21 publications

References 10 publications

Determining the diamond lapping films’ ability to micro-finishing

Determining the diamond lapping films’ ability to micro-finishing

Experimental Investigation on the Impact of Graphite Electrodes Grain Size on Technological Parameters and Surface Texture of Hastelloy C-22 after Electrical Discharge Machining with Negative Polarity

Experimental Investigation of Surface Layer Properties of High Thermal Conductivity Tool Steel after Electrical Discharge Machining

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