Technical Briefs

Research on Hybrid Process of Laser Drilling With Jet Electrochemical Machining

[+] Author and Article Information
Lixin Yuan

e-mail: 06124@njnu.edu.cn

Jiawen Xu

e-mail: xjw502@nuaa.edu.cn

Jianshe Zhao

Associate Professor
e-mail: zhaojs@nuaa.edu.cn

Hua Zhang

e-mail: nuaazhh@nuaa.edu.cn
College of Mechanical and Electrical Engineering,
Nanjing University of Aeronautics and Astronautics,
Nanjing 210016, China

1Corresponding author.

2Present address: School of Physics and Technology, Nanjing Normal University, Nanjing 210046, China.

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received March 20, 2010; final manuscript received September 14, 2012; published online November 12, 2012. Assoc. Editor: Bin Wei.

J. Manuf. Sci. Eng 134(6), 064502 (Nov 12, 2012) (4 pages) doi:10.1115/1.4007639 History: Received March 20, 2010; Revised September 14, 2012

The spatter and recast layer are main metallurgical defects in laser drilling (LD). Combining jet electrochemical process with laser can minimize such defects. The hybrid process is called electrolysis jet guided laser drilling (EJGLD). The presented experiment results show that the electrolyte jet can guide and transmit laser to the workpiece for drilling; and the electrochemical dissolution can effectively reduce spatter and recast layer. This paper introduces work on how to optimize this hybrid process, in particular, how to set a proper distance between the cathode and workpiece for best efficiency and accuracy.

Copyright © 2012 by ASME
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Fig. 1

Principle scheme of JECM-LD

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Fig. 2

Schematic mechanism for EJGLD

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Fig. 3

The experiment setup

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Fig. 4

Profile of hole with LD in air

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Fig. 5

Profile of hole with JGLD

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Fig. 6

Profile of hole with EJGLD

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Fig. 7

SEM image of hole cross section with JGLD

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Fig. 8

SEM image of hole cross section with EJGLD

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Fig. 9

The relationship between interelectrode gap and material removal rate

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Fig. 10

Definition of taper and overcut and calculation formulae

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Fig. 11

The relationship between taper and interelectrode gap

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Fig. 12

The relationship between overcut and interelectrode gap

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Fig. 13

Example of blind-holes array and letter




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