Effect of die profile on deformation in axisymmetric free shape hot forging for 1100 aluminum.
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概要
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A free shape forging process is suitable for making products with various shapes and dimensions. This forging apparatus consists of a die and some punches applying loads to a specimen individually to vary the die configuration. In this paper, the deformation and load properties were investigated in case of applying this forging process to the axisymmetric extrusion-forging of hot aluminum specimen. In the experiments, three types of the lower dies having cylindrical hole or concentric ring hole in their bottom and the upper die set composed of three punches of the shape of two concentric rings and one cylinder were prepared. One of the punches applied a quasi-static load, one at a time, to a hot aluminum specimen. Dimensions of the specimen and load were measured during forging. The maximum load and the final shape of the specimen in this forging process were compared with these in the conventional forging process. In result, it was shown that this forging process was able to forge the products of the various shapes by one set of dies. The effects of both the configuration of the lower dies and control procedure of the punches on the deformation pattern were discussed. The maximum load of this forging process was smaller than that of the conventional forging process.
- 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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