熱間スピニング加工した6063アルミニウム合金管材の寸法精度および表面性状に及ぼす加工方向の影響

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  • Effect of processing direction on the size and surface qualities of a 6063 aluminum alloy tube subjected to hot spinning

説明

Spinning is one of forming method which forms the flat metal into cylindrical metal by roller. This method is used to neck form, the high-pressure hydrogen storage container which is mounted in FCV. Liner of the container is applied the 6000 series aluminum alloy. Both of the ends of container are formed by hot spinning. A previous study reported that wrinkles were formed on the inner surface of 6063 aluminum alloy tube subjected to hot spinning in the direction from the barrel to the mouth at tube specimen. Furthermore, it was reported that the tube thickness distribution after machining became non-uniform. Thus, in this study, hot spinning was performed from the end of the mouth to the barrel in order to investigate the effect of forming direction on internal surface defects of 6063 aluminum alloy tube. Then, the surface quality and tube thickness distribution of the product were compared with those in the previous report, and the effect of the processing direction on them was investigated.

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