当前位置:文档之家 > 弯管成形理论和技术研究进展与发展趋势

弯管成形理论和技术研究进展与发展趋势

弯管成形理论和技术研究进展与发展趋势

弯管成形理论和技术研究进展与发展趋势

弯管成形理论和技术研究进展与发展趋势

弯管成形理论和技术研究进展与发展趋势

弯管成形理论和技术研究进展与发展趋势

Contents lists available at ScienceDirect

Chinese Journal of Aeronautics

journal homepage: www.elsevier .com/locate/cja

弯管成形理论和技术研究进展与发展趋势

Chinese Journal of Aeronautics 25 (2012) 1-12

Advances and Trends on Tube Bending Forming Technologies

YANG He a,*, LI Heng a , ZHANG Zhiyong a , ZHAN Mei a , LIU Jing a , LI Guangjun b

a

State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical

University, Xi’an 710072, China

b

Chengdu Aircraft Industry (Group) Corporation Ltd., Chengdu 610092, China

Received 18 August 2011; revised 17 September 2011; accepted 23 September 2011

Abstract

As one kind of key components with enormous quantities and diversities, the bent tube parts satisfy the increasing needs for lightweight and high-strength product from both materials and structure aspects. The bent tubes have been widely used in many high-end industries such as aviation, aerospace, shipbuilding, automobile, energy and health care. The tube bending has become one of the key manufacturing technologies for lightweight product forming. Via the analysis of bending characteristics and multiple defects, advances on exploring the common issues in tube bending are summarized regarding wrinkling instability at the intrados, wall thinning (cracking) at the extrados, springback phenomenon, cross-section deformation, forming limit and process/ tooling design/optimization. Some currently developed bending techniques are reviewed in terms of their advantages and limitations. Finally, in view of the urgent requirements of high-performance complex bent tube components with difficult-to- deform and lightweight materials in aviation and aerospace fields, the development trends and corresponding challenges are presented for realizing the precise and high-efficiency tube bending deformation. Keywords: tube bending; forming; lightweight; high strength; defects; aviation; aerospace

1. Introduction

As one kind of key lightweight components for “bleeding” transforming and loading carrying with en- ormous quantities and diversities, metallic bent tubular parts have attracted increasing applications in many high-technological industries such as aviation (shown in Fig. 1), aerospace, shipbuilding, automobile, energy and health care since they satisfy the current needs for

*Corresponding author. Tel.: +86-29-88495632.

E-mail address: yanghe@http://www.doczj.com/doc/4b1f34cd4693daef5ef73df1.html

Foundation items: National Natural Science Foundation of China (50905144); State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology (09-10); NPU Foundation for Fundamental Research (JC201028); Fund of the State Key Laboratory of Solidification Processing in NWPU,

Natural Science Basic Research Plan in Shaanxi Province (2011JQ6004); “111” Project (B08040)

1000-9361/$ - see front matter © 2012 Elsevier Ltd. All rights reserved. doi: 10.1016/S1000-9361(11)60356-7

products with lightweight, high strength and high per- formance from both materials and structure aspects. To bend the tubular materials with certain bending radius, bending angle and shapes, the tube bending, one imp- ortant branch of the tubular plastic forming fields, has been a vital manufacturing technology for lightweight products urgently needed in the above industries [1-2]. Many tube bending approaches have been dev- eloped in response to the diverse demands of tube specification, shapes, materials and forming toler- ance [3-4]. According to the forming conditions, there are cold bending at room temperature and hot (heat) bending with elevated temperature. From the vie- wpoint o
f loading conditions, there are pure bending, compression bending, stretch bending, roll bending, rotary draw bending and laser bending. There are st- ainless steel tube bending, aluminum alloy tube be- nding, copper tube bending, magnesium alloy tube be- nding and titanium alloy tube bending in materials point of views. From aspects of tubular shapes, there

products with lightweight, high strength and high per- formance from both materials and structure aspects. To bend the tubular materials with certain bending radius, bending angle and shapes, the tube bending, one imp- ortant branch of the tubular plastic forming fields, has been a vital manufacturing technology for lightweight products urgently needed in the above industries [1-2]. Many tube bending approaches have been dev- eloped in response to the diverse demands of tube specification, shapes, materials and forming toler- ance [3-4]. According to the forming conditions, there are cold bending at room temperature and hot (heat) bending with elevated temperature. From the vie- wpoint of loading conditions, there are pure bending, compression bending, stretch bending, roll bending, rotary draw bending and laser bending. There are st- ainless steel tube bending, aluminum alloy tube be- nding, copper tube bending, magnesium alloy tube be- nding and titanium alloy tube bending in materials point of views. From aspects of tubular shapes, there

下载Word文档免费下载:

弯管成形理论和技术研究进展与发展趋势下载

(共12页)

弯管机成型弯管

弯管成型弯管_机械/仪表_工程科技_专业资料。弯管成型介绍,弯管机样管 张家港市润腾机械 弯管弯管原理 液压弯管机是一种新型的具有弯管功能及起顶功能的弯管...

塑料弯管的注塑成形工艺优化(精)

塑料弯管的注塑成形工艺优化(精)_其它_职业教育_...学院在读研究生 , 研究方向 : 工程机 械 , 电话...工作原理 就一个齿面来讲 , 其加工的方法 与在铣床...

牛角芯棒热推弯管成形过程受力变形特点(精)

摘要 通过实验研究分析了牛角芯棒热推弯管成形过 程...为牛角芯棒热推弯管成形过程塑 性分析奠定了基础 ....因此 , 变形主轴沿 θ3 个方向 . 主应变主 ...

不锈钢管弯管器的使用方法及操作流程

简介: 不锈钢钢管弯管通常使用到的工具是 RIDGID 600 系列重负荷弯管器,以下为操作步骤和使 用方法。 组成部件 滑块手柄 X-Tune 转向机制 滑块 挂钩 成型成型...

弯管机成形的工艺改进

龙源期刊网 弯管成形的工艺改进 作者:何汉强 来源:《科技与创新》2016 年第 12 期 摘要:目前,弯管机虽然被广泛应用于诸多领域,但...

金属管材弯曲成形回弹问题研究

工业构 件高强度轻量化、 高精度复杂化的发展趋势...效率生产成本, 这已成为弯管高效 精密加工技术的...着重研究了应变强化理论在管 材弹塑性弯曲成形过程中...

弯管论文-1

弯曲成形过程 的仿真,解决了弯曲模具和弯管过程中的...关键词:管材成形、仿真软件、研究 1 问题概述 1 ...有限 元理论加上先进的计算机科学技术,是解决现代...

塑料弯管的注塑成形工艺优化

第29卷第ll期2008年11月 煤矿机械 CoalMineMaehinerv V01.29No.1lNOV.2008 塑料弯管的注塑成形工艺优化 周标 (浙江工业大学浙西分校,浙江衢州324000) 摘要:...

过桥弯管成型模设计

过桥弯管成型模设计_教学案例/设计_教学研究_教育...给、排水系统中,以塑代钢已经成为了一种 发展趋势...响应技术,其中主要介绍了快速温度响应模具的原理和 ...

热推弯管成形过程材料本构模型

在热推弯管成形过程实验研究基础上, 综合考虑加热温度、 应变速率、 变形程度、 应力状 态含碳量等因素对碳钢弯管成形过程材料力学性能的影响, 兼顾准确性和计算...