Research on Side-Insulation of Tool Electrode for Micro Electrochemical Machining

Abstract:

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In micro electrochemical machining (micro ECM), side-insulation of tool electrode can significantly improve the machining accuracy, especially for high aspect ratio structures. This paper presented a new side-insulation approach for not only micro single electrodes but also micro array electrodes, in which spin-coating and room curing are used to coat the micro tool electrodes with a very thin film of polymer, followed by an end-rubbing process to remove the insulation material from the electrode end surfaces. Processing parameters of spin-coating were optimized experimentally, and side-insulated micro single electrodes with a double-layer epoxy coating of 3m thickness were prepared. Experiments were made to test the performance of the side-insulation film under simulated micro ECM conditions. And the results demonstrated good insulativity and high adherence strength in a 6-hour durability test. Also side-insulation for micro array electrodes was performed using this approach.

Info:

Periodical:

Advanced Materials Research (Volumes 60-61)

Edited by:

Xiaohao Wang

Pages:

380-387

DOI:

10.4028/www.scientific.net/AMR.60-61.380

Citation:

G. H. Liu et al., "Research on Side-Insulation of Tool Electrode for Micro Electrochemical Machining ", Advanced Materials Research, Vols. 60-61, pp. 380-387, 2009

Online since:

January 2009

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Price:

$35.00

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