Almtract--A new, simple and practically applicable equation, including the normal anisotropy value R and the strain hardening exponent n, for estimating the limiting drawing ratio LDR in cup-drawing of a cylindrical cup with a flat-nosed punch is derived. The normal anisotropy is based on Hill's the
Prediction of process conditions in drawing and ironing of cans
✍ Scribed by Marco Schünemann; Mustafa A. Ahmetoglu; Taylan Altan
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 765 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0924-0136
No coin nor oath required. For personal study only.
✦ Synopsis
Deep drawing and ironing are the major processes used today in manufacturing of beverage cans from aluminum. The same technology is utilized in manufacturing of steel cans for the food industry, photosensitive drums and pressure vessels for fire extinguishers. Most of these processes require multi-stage ironing following the deep drawing and redrawing or backward extrusion processes. The practical aspects of this technology are well known and gained through extensive experimentation and production know-how. However, the fundamental aspects of these processes are relatively less known, especially regarding the temperature developed during deformation and the effect of deformation speed upon temperatures and lubrication. Thus, it is expected that process simulations using FEM techniques would provide additional detailed information that could be utilized to improve the process conditions. This paper illustrates the application of process modeling to deep drawing and ironing operations. A commercially available finite element code DEFORM was used to simulate deep drawing, redrawing and multi-stage ironing operations with varying parameters to illustrate the interactions between process variables.
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