Process Parameter Optimization and Experimental Study of Micro-Holes in Electrochemical Micromachining Using Pulse Current

Abstract:

Electrochemical micro-machining (EMM) has become one of the main machining methods for production of miniaturized parts and components. Utilizing a developed EMM set-up, sets of experiments have been carried out to investigate the influences of some of the predominant electrochemical process parameters such as pulse frequency, feed rate of tool, machining voltage and ultrasonic frequency on the machining accuracy of micro-holes. According to the present investigation, the most effective zone of pulse on time and ultrasonic frequency can be considered as 15-50μs and 26KHZ, respectively, which can gives a desirable machining accuracy for micro-holes. A machining voltage range of 6-10V can be commended to obtain high machining accuracy. From the micrographs of the machined micro-holes, it may be observed that a lower value of electrolyte concentration with moderate machining voltage and moderate value of pulse on time will produce more accurate shape of micro-holes.

• Periodical: Advanced Materials Research (Volume 135)
• Pages: 293-297
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.135.293
• Online since: October 2010
• Authors: Zhi Yong Li, Zong Wei Niu
• Keywords: Electrochemical Micro Machining, Micro-Hole, Parameter Optimization, Pulse Current

References

[1] B. Bhattacharyya, S. Mitra, A.K. Boro: Robotics and Computer Integrated Manufacturing Vol. 18 (2002), pp.283-289.

DOI: 10.1016/s0736-5845(02)00019-4

[2] B. Bhattacharyya, J. Munda: Int. J. Machine Tools & Manufacture Vol. 43 (2003), pp.1301-1310.

[3] B. Bhattacharyya, M. Malapati and J. Munda: J. Materials Processing Technology Vol. 169 (2005), pp.485-492.

[4] M. Kock, V. Kirchner and R. Schuster: Electrochimica Acta Vol. 48 (2003), pp.3213-3219.

[5] H.Y. Xu: Research on Electrochemical Micro-machining System and key Techniques (Ph.D. Thesis, Nanjing University of Aeronautics and Astronautics, China 2005).

[6] Z.Y. Li, D. Zhu: Numerical solution for cathode design of aero-engine blades in electrochemical machining. in The IEEE international conference on mechatronics and automation, Vol. 2, pp.1418-1423, Luoyang, China, (2006).

DOI: 10.1109/icma.2006.257837