Metal-flow phenomena of orbital rotary flaring of aluminum tubes.
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概要
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Orbital rotary flaring is a process in which a tube-end is flared to fit on a tool-envelope surface made by a relative motion of a tool around the tube. The orbital rotary flaring is to be a hopeful process for small-lot production. However, metal-flow phenomena of the forming are not yet clarified. In this study, metal-flow behaviour of orbital rotary flaring of aluminum tubes is examined in order to clarify the metal-flow mechanism of the forming. The experimental results show that two different types of metal-flow phenomena occur. In the case of half apex angle of tool-envelope surface equals to 90°, flanging mode with inward-flowing takes place following the mushrooming mode. When the half angle is smaller than 90°, flaring mode with inward-flowing mode takes place. In consideration of experimental analysis of strain distributions and their history, the metal-flow mechanism is investigated to explain these two types of metal-flow phenomena and to assess the effect of various process parameters on the metal-flow behaviour.
- 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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