Taper Drawing of Non-Circular Steel Tubes by Dieless Eorming

异形钢管无模锥度拉拔

• 批准号: 63550071
• 负责人: SEKIGUCHI Hideo
• 金额: $ 1.47万
• 依托单位: Nara National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63550071/
• 关键词: dieless; drawing; induction heating; non-circular tube; taperd tube; ダイレスフォ-ミング; テ-パ加工; 角鋼管; テ-パ角管; 引抜き; ダイレスフォーミング; テーパ加工; テーパ角管

It is impossible to give tapered drawing deformation in longitudinal direction for non-circular steel tubes using tools and dies, at the present technological knowledge and know-how. In this project, a new method for making tapered tubes having various cross-sectional shapes has been developed, combined with the techniques of roll forming and dieless forming.The following results are obtained from the fundamental research work and some problems for industrial avplication are also discussed :(1) Using the experimental sets of an induction heating device (max. power of 3 Kw, frequency of 2 MHz) and an Instron testing machine of 5 tons, square shaped steel tubes (21 x 21 mm, wall thickness 1.2 - 2.1 mm) were drawn for obtaining tapered tubes under various heating, cooling and/or deformation conditions ; a precise drwing can be conducted within the error of <plus-minus> 0.1 % in a taper angl(2) Suitable conditions of dieless drawing were investigated experimentally and theoretically.(3) A basical design of a proto type dieless drawing machine having a heating ability of 60 Kw and a pulling device of 50 tonf has been conducted, and the possibility of industrial application of this new process was confirmed.

以目前的技术知识和技术诀窍，不可能用工具和模具对非圆钢管进行纵向的锥形拉伸变形。在这个项目中，开发了一种新的方法来制造具有各种截面形状的锥形管，结合了滚压成形和无模成形技术。本文从基础研究工作中得出了以下结论，并对工业应用中存在的一些问题进行了讨论：(1)利用感应加热装置的实验装置(max。功率3kw，频率2mhz)和5吨Instron试验机，绘制方形钢管（21 × 21 mm，壁厚1.2 - 2.1 mm），用于在各种加热，冷却和/或变形条件下获得锥形管；对无模拉深的适宜条件进行了实验和理论研究。(3)对加热能力为60kw、拉拔装置为50t的无模拉拔机样机进行了基本设计，并确定了新工艺工业化应用的可能性。

项目成果

関口ほか: "異形鋼管のテ-パ引抜き加工法の開発" 第41回塑性加工連合講演会論文集. (1990)

Sekiguchi等人：“异形钢管锥度拉拔方法的开发”第41届塑料工作联盟会议论文集（1990年）。

関口 他: 第3回塑性加工国際会議(京都)(The 3rd Int. Conf. on Technology of Plasticity). (1990)

Sekiguchi 等人：第三届可塑性技术国际会议（京都）。

H. Sekiguchi, K. Kobatake, K. Kimura and G. Luan: "Taper Drawing of Non-circular Steel Tubes by Dieless Forming Technique" Proceedings of 42 National Conference on Technology of Plasticity. 147-150 (1991)

H. Sekiguchi、K. Kobatake、K. Kimura、G. Luan：《无模成形非圆钢管锥度拉拔》第42届全国塑性技术学术会议论文集。

関口 秀夫ほか: "ダイレスフォ-ミングによる異形鋼管のテ-パ引抜き加工" 第42回塑性加工連合講演会論文集. 147-150 (1991)

Hideo Sekiguchi 等人：“通过无模成形对变形钢管进行锥度拉拔”第 42 届塑料工作联盟会议记录 147-150 (1991)。

関口ほか: "異形鋼管のテ-パ引抜き加工法の開発" 第42回塑性加工連合講演会論文集. (1991)

Sekiguchi等人：“异形钢管锥度拉拔方法的开发”第42届塑料工作联盟会议论文集（1991年）。