Peeling of Coated Metal due to Severe Press-forming in Aluminized Steel Sheet
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概要
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An experimental study has been carried out to investigate the peeling of coated metal caused by severe forming in hot dip aluminized steel sheet. The main aim of this paper has been to clarify the mechanisms of peeling and the relationship between peeling and forming conditions.Experimental materials were aluminized steel sheets with a 1.2mm thickness and a coating weight of approximately 90g/m2 in total both sides.Peeling occurs when a compressive deformation is first applied and followed by a stretching deformation, as in the case of an outer wall of a drawn cup and an outer side of a hat-shaped bending. However, no peeling occurs in the simple deformation path, even after the sheet metal is broken. In actual press forming, peeling is liable to occur when the die profile is small and when redrawing is done many times, because peeling increases as the amount of initial compressive deformation and the amount of subsequent stretching deformation increase.
- The Iron and Steel Institute of Japanの論文
The Iron and Steel Institute of Japan | 論文
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