The superficial layer quality alloying by electro spark deposition method

• Autorzy: Spadło S. , Młynarczyk P.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper presents a brief study of electro-discharge mechanical machining with an elastic, discrete electrode. Design/methodology/approach: The electrode is elastically pressed against the machined surface. This modified alloying method offers the following possibilities: machining of surfaces of complex shapes, high productivity, and ease of process automation. Attention has been given to the relation between the alloying effects and machining conditions. Findings: The superficial layer obtained by electro spark deposition method using brush electrode consist of several layer. At the top, a molten and resolidified layer, called recast layer, is observed. this layer is usually present because material transfer in electro spark deposition method is mainly based on melting process of the workpiece material. In the recast layer in machining condition the mixing and diffusion of the material hot electrode and the workpart can occur. Research limitations/implications: The factors causing the chemical composition, surface roughness and residual stress of superficial layer have also been taken into consideration. Attention has also been given to the relation between the material of electrode and the superficial layer chemical composition. Originality/value: The electrical discharge mechanical machining process has been used for more than 60 years. A new type of this method, which employs the tool-electrode in the form of a rotating brush consisting of wires, employed for alloying process, has been presented.

Słowa kluczowe

EN

spark deposition; brush electrode; superficial layer

PL

elektroda szczotkowa; warstwa powierzchniowa

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2014
• Tom: Vol. 64, nr 1
• Strony: 39--44
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Spadło S.

• Division of Materials Science and Munitions Technology, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland

autor

Młynarczyk P.

• Division of Materials Science and Munitions Technology, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland

Bibliografia

• [1] B. Nowicki, R. Pierzynowski, S. Spadło, The superficial layer of parts machined by brush electro discharge mechanical machining (BEDMM), Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 218 (2004) 9-15.
• [2] R. Pierzynowski, Some investigation of brush electrode alloying, Scientific Papers. Mechanics/ Academy of Technology and Agriculture in Bydgoszcz 46(225) (2000) 191-198 (in Polish).
• [3] A. Miernikiewicz, Experimental and theoretical basis for EDM, Monograph 274, Cracow, 2000 (in Polish).
• [4] B. Nowicki, A. Podolak-Lejtas, Investigations of the effect of combined EDM machining with burnishing process on the condition of the surface layer, Advances in Manufacturing Science and Technology 32/4 (2008) 5-17.
• [5] B. Nowicki, A. Dmowska, A. Podolak-Lejtas, Morphology of traces made by individual electric discharge in the EDM, Advances in Manufacturing Science and Technology 33/4 (2009) 5-24.
• [6] N. Radek, J. Konstanty, Cermet ESD coatings modified by laser treatment, Archives of Metallurgy and Materials 57/3 (2012) 665-670.
• [7] L. Dąbrowski, R. Świercz, The study of the microstructure of the surface layer after treatment (EDM), World of Machine Tools 7/1-2 (2012) 26-30 (in Polish).
• [8] B. Nowicki, R. Pierzynowski, S. Spadło, Investigation of electro-discharge mechanical dressing (EDMD) of diamond abrasive wheels with conductive bonds using brush electrodes, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 220/3 (2006) 421-428.
• [9] S. Adamczak, E. Miko, F. Cus, V. Strojniski, A model of surface roughness constitution in the metal cutting process applying tools with defined stereometry, Journal of Mechanical Engineering 55 (2009) 45-54.
• [10] A.D. Davydov, J. Kozak, Physico-Chemical Principles of Electrochemical Discharge Machining, Surface Engineering and Applied Electrochemistry 3 (1991) 3-13.