Micro Sheet Hydroforming Process of Ultra-Thin Pure Titanium Foil

Abstract:

Article Preview

A micro hydromechanical deep drawing is carried out using the pure titanium and the effect of fluid pressure on formability of pure titanium is investigated. The experiments are performed using the two kinds of pure titanium foils (TR270C-H and TR270C-O) and stainless steel foil (SUS304-H) with 50 thickness and the cylindrical and conical punches. As a result, it is found that the peeling off the oxide film of pure titanium can be reduced by applying the fluid pressure because the friction force and contact pressure between the blank and die decreases. However, the formability is lower for pure titanium than that for stainless steel because the tensile strength is low and the friction force is easy to increase as the friction force increases. In contrast, due to the low young modulus of pure titanium, the restriction of wrinkling, decrease of friction force and friction holding effect can be obtained at low fluid pressure.

Info:

Periodical:

Edited by:

Yeong-Maw Hwang and Cho-Pei Jiang

Pages:

397-401

Citation:

H. Sato et al., "Micro Sheet Hydroforming Process of Ultra-Thin Pure Titanium Foil", Key Engineering Materials, Vol. 626, pp. 397-401, 2015

Online since:

August 2014

Export:

Price:

$38.00

* - Corresponding Author

[1] K. Wang, The Use of Titanium for Medical Applications in the USA, Materials Science and Engineering, 213, (1996), 134–137.

[2] K.V. Putten, M. Franzke, G. Hirt, Size Effect on Friction and Yielding in Wire Flat Rolling, Proceedings of the 2nd International Conference on New Forming Technology, (2007), 583-592.

[3] T. Shimizu, S. Iwaoka, Ken-ichi Manabe, Y. Teranishi, K. Morikawa, Tribological Properties of Anodized Pure Titanium Foils in Micro-Deep Drawing with Ironing, Proceedings of the 15th International Conference on Advances in Materials & Processing Technologies, (2012).

[4] M. W. Fu, W. L. Chan, Geometry and Grain Size Effects on the Fracture Behavior of Sheet Metal in Micro-Scale Plastic Deformation, Materials and Design, 32, (2011), 4738-4746.

DOI: https://doi.org/10.1016/j.matdes.2011.06.039

[5] F. Vollertsen, Effects on the Deep Drawing Diagram in Micro Forming, Production Engineering, 6, (2012), 11-18.

[6] K. Nakamura, T. Nakagawa, Sheet Metal Forming with Hydraulic Counter Pressure in Japan, Annals of the CIRP, 36, (1987), 191-194.

DOI: https://doi.org/10.1016/s0007-8506(07)62583-9

[7] K. Nakamura, T. Nakagawa, Fracture Mechanism and Fracture Control in Deep Drawing with Hydraulic Counter Pressure – Studies on Hydraulic Counter Pressure Forming I, Journal of the Japan Society for Technology of Plasticity (in Japanese), 25, (1984).

[8] H. Sato, K. Manabe, K. Ito, D. Wei, Z. Jiang, Development of Servo-Type Micro-Hydromechanical Deep-Drawing Apparatus and Micro Deep-Drawing Experiments of Circular Cups, Journal of the Japan Society for Technology of Plasticity (in Japanese), 55, (2014).

DOI: https://doi.org/10.1016/j.jmatprotec.2015.05.014