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Izvorni znanstveni članak
https://doi.org/10.21278/TOF.444007919

Electrochemical Small Diameter Deep Hole Drilling of Powder Metal Steel

Hacı Bekir Özerkan ; Department of Machinery and Metal Technologies, Gazi University, Ankara, Turkey
Can Çoğun ; Mechatronics Engineering Department, Faculty of Engineering, Çankaya University, Ankara, Turkey

Puni tekst: engleski, pdf (2 MB) str. 47-58 preuzimanja: 119* citiraj
APA 6th Edition
Özerkan, H.B. i Çoğun, C. (2020). Electrochemical Small Diameter Deep Hole Drilling of Powder Metal Steel. Transactions of FAMENA, 44 (4), 47-58. https://doi.org/10.21278/TOF.444007919
MLA 8th Edition
Özerkan, Hacı Bekir i Can Çoğun. "Electrochemical Small Diameter Deep Hole Drilling of Powder Metal Steel." Transactions of FAMENA, vol. 44, br. 4, 2020, str. 47-58. https://doi.org/10.21278/TOF.444007919. Citirano 16.04.2021.
Chicago 17th Edition
Özerkan, Hacı Bekir i Can Çoğun. "Electrochemical Small Diameter Deep Hole Drilling of Powder Metal Steel." Transactions of FAMENA 44, br. 4 (2020): 47-58. https://doi.org/10.21278/TOF.444007919
Harvard
Özerkan, H.B., i Çoğun, C. (2020). 'Electrochemical Small Diameter Deep Hole Drilling of Powder Metal Steel', Transactions of FAMENA, 44(4), str. 47-58. https://doi.org/10.21278/TOF.444007919
Vancouver
Özerkan HB, Çoğun C. Electrochemical Small Diameter Deep Hole Drilling of Powder Metal Steel. Transactions of FAMENA [Internet]. 2020 [pristupljeno 16.04.2021.];44(4):47-58. https://doi.org/10.21278/TOF.444007919
IEEE
H.B. Özerkan i C. Çoğun, "Electrochemical Small Diameter Deep Hole Drilling of Powder Metal Steel", Transactions of FAMENA, vol.44, br. 4, str. 47-58, 2020. [Online]. https://doi.org/10.21278/TOF.444007919

Sažetak
In this study, a new hybrid electrochemical drilling (ECD) method is proposed. The method makes use of a tubular tool capable of rotating and an electrolyte flushing through the inner hole at the same time. The designed and manufactured small size ECD machine’s most important features are the regulation of the tool feed rate via current feedback control and the use of a rotating tubular tool with internal electrolyte flushing. The powder metal (PM) FLN2 4405 steel was drilled by using a brass tubular tool with various combinations of machining parameters such as machining voltage, electrolyte concentration and flushing pressure, and tool rotation speed. The machining performance outputs, namely, material removal rate (MRR), average radial overcut (RADOC), conicity (CO) and hole geometries were calculated and compared in different machining conditions. The results have shown that the aforementioned variables had a direct impact on the machining performance outputs in ECD. In all experiments, MRR increased with an in increase in machining voltage, tool rotational speed, electrolyte concentration and flushing pressure. RADOC values decreased with the rotational speed of the tool. The present study shows that deep holes with precise geometries and dimensions can be drilled successfully by employing the proposed hybrid ECD method. The method is economical and environmentally friendly since it requires low machining current values (0.1 to 0.7A) and a small amount of non-hazardous halide salt solutions instead of acidic solutions throughout the drilling process.

Ključne riječi
electrochemical drilling; rotational tubular tool; current feedback control; PM steel workpiece

Hrčak ID: 247550

URI
https://hrcak.srce.hr/247550

Posjeta: 231 *