发明名称 |
METHOD OF MANUFACTURING HOLLOW MEMBER |
摘要 |
A process is provided for producing a hollow member having a wall thickness, in a cross section orthogonal to the longitudinal direction, that varies in the longitudinal direction, the process including a heating step of heating a tubular material (Pa) so that the tubular material (Pa) is given a temperature variation in the longitudinal direction, and a stretching step of axially stretching the tubular material (Pa) that has been heated in the preceding step. In this way, a hollow member having a cross-sectional wall thickness that is variable in the longitudinal direction can be easily produced. <IMAGE>
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申请公布号 |
EP1440741(A1) |
申请公布日期 |
2004.07.28 |
申请号 |
EP20020775221 |
申请日期 |
2002.09.20 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
HORI, IZURU;MIZUTANI, KOUKI;MARUYAMA, MANABU;MIYANAGA, KENJI;KANAI, YUJI;ISOGAI, KAZUO |
分类号 |
B21C37/16;B21D26/033;B21D26/041;B21D26/043;B21D26/045;B21D51/16;B21D53/88;B21K1/12;(IPC1-7):B21C37/16;B21D26/02 |
主分类号 |
B21C37/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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