Micro deep drawing of T2 copper foil using proportional decreased tools

Micro deep drawing of T2 copper foil using proportional decreased tools Cooper foils are widely used in micro electronic industry, and they are suitable to be deep drawn to form cup-like parts. In this study, micro deep drawing experiments were conducted by using T2 copper foils after an annealing process, and three scale factors (λ = 0.5, 1, and 2) were set to indicate effects of proportional decreased tool dimensions and processing parameters on the forming result. The experimental results show that micro deep drawing parts with internal diameters of 0.5, 1.0, and 2.0 mm can be formed successfully. And the 0.5-mm cup drawing part has achieved the minimum dimension in recent reports. The standardized punch travel-deep drawing force curves are similar, and the maximum deep drawing force is decreased with smaller scale factor. The thickness distributions of different processing parameters are all decreased firstly and then show the trend to increase from bottom to upper regions. We find that the size effect influences the maximum deep drawing force during the forming process and the quality of forming part. And the maximum limit drawing ratio (LDR) is 2.2 for the experiment with scale factor of 0.5. Forming regularities of the proportional decreased micro deep drawing process can be presented clearly by changing the scale factor. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The International Journal of Advanced Manufacturing Technology Springer Journals

Micro deep drawing of T2 copper foil using proportional decreased tools

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Publisher
Springer London
Copyright
Copyright © 2017 by Springer-Verlag London Ltd.
Subject
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
ISSN
0268-3768
eISSN
1433-3015
D.O.I.
10.1007/s00170-017-1111-6
Publisher site
See Article on Publisher Site

Abstract

Cooper foils are widely used in micro electronic industry, and they are suitable to be deep drawn to form cup-like parts. In this study, micro deep drawing experiments were conducted by using T2 copper foils after an annealing process, and three scale factors (λ = 0.5, 1, and 2) were set to indicate effects of proportional decreased tool dimensions and processing parameters on the forming result. The experimental results show that micro deep drawing parts with internal diameters of 0.5, 1.0, and 2.0 mm can be formed successfully. And the 0.5-mm cup drawing part has achieved the minimum dimension in recent reports. The standardized punch travel-deep drawing force curves are similar, and the maximum deep drawing force is decreased with smaller scale factor. The thickness distributions of different processing parameters are all decreased firstly and then show the trend to increase from bottom to upper regions. We find that the size effect influences the maximum deep drawing force during the forming process and the quality of forming part. And the maximum limit drawing ratio (LDR) is 2.2 for the experiment with scale factor of 0.5. Forming regularities of the proportional decreased micro deep drawing process can be presented clearly by changing the scale factor.

Journal

The International Journal of Advanced Manufacturing TechnologySpringer Journals

Published: Oct 18, 2017

References

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