Browse > Article
http://dx.doi.org/10.5228/KSPP.2004.13.8.689

Characteristics of Forming toad in Forward and Backward Can Extrusion Processes  

Choi H. J (인하대학교 자동화공학과 대학원)
Ham B. S (인하대학교 기계공학과 대학원)
Ok J. H (인하대학교 기계공학과 대학원)
Shim J. H (인하대학교 기계공학과 대학원)
Kim S. H (인하대학교 기계공학과 대학원)
Hwang B. B (인하대학교 기계공학부)
Publication Information
Transactions of Materials Processing / v.13, no.8, 2004 , pp. 689-695 More about this Journal
Abstract
This paper is concerned with the analysis of the forming load characteristics of a forward-backward can extrusion process. The analysis in this paper is extended to the selection of press frame capacity for producing efficiently final product at low cost. The possible extrusion processes to shape a forward-backward can part with different outer diameters are categorized to investigate quantitatively the forming load, forming energy and maximum pressure exerted on the die-material interface. The categorized processes are composed of combined and/or some basic extrusion processes. After the analysis of the forming load characteristics, the frame capacity of press suitable for a selected process could be determined along with securing the load capacity and with considering productivity. In addition, it is also suggested that different load capacities be selected for different dimensions of a part such as the wall thickness in forward direction. The work in this paper could be a good reference for analysis of complex extrusion and selection of proper frame capacity of press to achieve low production cost and thus high productivity.
Keywords
Forward and Backward Can Extrusion; Forming Load; Deformation Energy; Die Pressure; Extruded Length;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 W. Osen, 1987, 'Possibilities and Limitations of Cold Extrusion Processes Combined with Radial Extrusion,' Advanced Technology of Plasticity, Vol. 1, pp. 575-582
2 R. Geiger, 1976, 'Der stoffl$\beta$ beim kombinierten Napfflie$\beta$pressen', Berichte aus dem Institut fur Umformtechnik, Universitat Stuttgart, Nr. 36, Essen, Girardet.
3 W. Kramer, 1981, Verfahrenskombinationen beim Kaltflie$\beta$pressen, Seminar, Neuere Entwicklungen in der Massivumformung, Forschungsgesellschaft Umformte-chnik mbH, Stuttgart.
4 H. H. Lin and H. Kudo, 1993, 'Theoretical considera -tion of metal flow control in cold simultaneous forward/backward extrusion,' Proc. 4th ICTP, Beijing, p. 693
5 B. D. Ko, H. J. Choi, D. H. Jang, J. Y. Lim and B. B. Hwang, 2003, 'Material Flow and Surface Expansion in Radial-Backward Extrusion,' JMPT, Vol. 12, No. 3, pp. 251-258
6 B. D. Ko, H. J. Choi, D. H. Jang and B. B. Hwang, 2003, 'Material Flow and Surface Expansion in Radial-Backward Extrusion,' KSTP, Vol. 12, No. 3, pp. 251-258
7 S. W. Choi and Y. S. Lee, 2002, 'A New Approach to Predicting Partial Recrystallization in the Multi-Pass Hot Rolling Process,' Met. Mater. -Int., Vol. 8, No. 1, pp. 15-23   DOI
8 Air Force Material Laboratory, 1989, 'Forming Equi-pment, Material and Practices,' Metal and Ceramics Information Center, p. 164
9 K.-A. Na, 1989, 'Press Handbook,' KiJunYeonGuSa, pp. 175-176
10 飯泉新五, 1960, 'Press Characteristics for Cold Forging and Selection of Press,' 日本塑性學會, Japan, pp. 547-548