Application of Back-Up Ring in Fine-Blanking Process

Suthep Yiemchaiyaphum; Masahiko Jin; Sutasn Thipprakmas

doi:10.4028/www.scientific.net/KEM.443.140

Paper Titles

Analyzing of Stainless Elliptical Cup Drawing Process
p.116

Strip Casting by a Single Roll Caster Equipped with a Scraper
p.122

Roll Casting of Three Layers Clad Strip
p.128

Parameter Design for the Counter-Blanking Process Using the Finite Element Method and the Taguchi Approach
p.134

Application of Back-Up Ring in Fine-Blanking Process
p.140

Analysis of Plate Bending in Coilbox by Finite Element Method
p.146

Draw Bending of Load-Adapted Sheet Metal Profiles
p.152

Fabrication of Ultrafine Grained Copper Alloy by 3-Layers Accumulative Roll-Bonding Process
p.158

The Effect of Heat Treatment on Formability of Ultra-Fine Grained AA6061 for Bolt Manufacturing
p.164

HomeKey Engineering MaterialsKey Engineering Materials Vol. 443Application of Back-Up Ring in Fine-Blanking...

Application of Back-Up Ring in Fine-Blanking Process

Abstract:

Considering the advantages of the fine-blanking process, the smooth-cut surface without further operation could be fabricated. However, one of the major problems of the fine-blanking is the occurrence of the die-roll formation. This problem is the main factor which affects the quality of the fine-blanked parts. In this study, to reduce the amount of die-roll formation, the application of back-up ring was proposed. The finite element method (FEM) was used to investigate the effects of back-up ring. In addition, the effects of bridge width were also investigated. The FEM simulation results illustrated that the mechanism of back-up ring and the effects of bridge width could be theoretically clarified base on the material flow analysis. The FEM simulation and experimental results showed the good agreement with each other. Therefore, the application of back-up ring could reduce the amount of die-roll formation on the fine-blanked parts. In this study, the amount of die-roll formation increased as the bridge width increase and it was constant at the bridge width of over 15 mm.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 443)

Pages:

140-145

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.443.140

Citation:

Cite this paper

Online since:

June 2010

Authors:

Suthep Yiemchaiyaphum, Masahiko Jin, Sutasn Thipprakmas

Keywords:

Back-Up Ring, Bridge Width, Die-Roll, Fine Blanking, Finite Element Model (FEM)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] K. Lange, F. Birzer, P. Hofel, A. Mukhoty and H. Singer: Edelstahlwerke Buderus AG. Feintool AG Lyss., (1997), p.141.

Google Scholar

[2] T. Nakagawa: Fine blanking, (The Nikkan Kogyo Shinbun, LTD., Tokyo 1998) (in Japanese).

Google Scholar

[3] T. S. Kwak, Y. J. Kim, W. B. Bae: J. Mater. Process. Technol., 130-131 (2002), p.462.

Google Scholar

[4] T. S. Kwak, Y. J. Kim, M. K. Seo, W. B. Bae: J. Mater. Process. Technol., 143-144 (2003), p.656.

Google Scholar

[5] S. Thipprakmas and M. Jin: Key Engineering Materials, Vol 410-411 (2009), p.305.

Google Scholar

[6] S. Thipprakmas: Materials & Design, Vol 30 (2009), p.526.

Google Scholar

[7] S. Thipprakmas, M. Jin, K. Tomokazu, Y. Katsuhiro and M. Murakawa: Journal of Materials Processing Technology, Vol 198 (2008), p.391.

DOI: 10.1016/j.jmatprotec.2007.07.027

Google Scholar

[8] S. Thipprakmas, S. Rojananan and P. Paramaputi: Journal of Materials Processing Technology, Vol 197 (2008), p.132.

Google Scholar

[9] S. Thipprakmas, M. Jin and M. Murakawa: Journal of Materials Processing Technology, Vol 192-193 (2007), p.128.

Google Scholar

[10] S. Thipprakmas: Materials & Design, (2010) doi: 10. 1016 / j. matdes. 2009. 11. 046.

Google Scholar