張出加工を受けたアルミニウム板のリストレーション加工
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概要
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When a sheet metal product is subjected to local damages like as hollows or bends, the appearance, in many cases the quality, of that product would largely decrease. To regain the original shape and quality, the product should be restored. However, there are many difficulties in the restoration process because the flow stress and thickness of the sheet have already changed at site by site. So far, such a restoration process has not been investigated so much. However, in taking the problems of environmental conservation into consideration, the importance of that process would get larger and larger from now on. In this paper, such a restoration process on bulged sheets of soft aluminum is investigated. Various restoration processes are examined to restore bulged sheets to the original flat shape with uniform thickness. In case that the flat tool without lubrication was pressed to a bulged sheet, the central part of the bulged region was not restored to the original thickness. On the other hand, using the tool with lubrication, the peripheral region of the bulged shape was not restored to the original thickness. In combination of lubrication tool and lubrication-less tool, a bulged sheet could be successfully restored to the original flat shape. It was also confirmed that, by pressing ring tools in turn from outer region of bulged shape, the sheet was restored to original thickness and flat shape.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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