Transactions of Materials and Heat Treatment

Title：Research status on forming technology for hollow shaft

Authors： Yang Cheng Lu Xingxing Sun Yue Zhuang Xiaowei Wang Ling

Unit： Xi′an University of Architecture and Technology Xi′an Jiaotong University Jiangsu Longcheng Precision Forging Co. Ltd.

KeyWords： hollow shaft solid shaft lightweight radial forging rotary forging extrusion

ClassificationCode：TG306

year,vol(issue):pagenumber：2018,43(1):1-8

Abstract：

The section moduli of bending resistance and torsion resistance for hollow shaft and solid shaft were compared, and there was little difference in transmission of torsion, bending moment and bending-torsion between hollow shaft and solid shaft with the same external diameter. However, the weight of hollow shaft could reduce a lot. Thus, the application of hollow shaft was increased more and more, and the problems of hollow shaft forming were urgent to be solved. Then, the forming technologies of hollow shaft were concluded and summarized, and the principles and characteristics of forging+machining, radial forging, rotary forging, extrusion or extrusion+machining, cross wedge rolling, power spinning, rotary compression, internal high pressure forming, cross rolling+axial piercing, injection forging and hydrostatic extrusion+internal high pressure forming were briefly analyzed. Furthermore, the commonly used methods were compared from the following aspects of blank form, forming temperature, lubrication, forming pass, dimensional accuracy, surface quality and formng cycle. In the future, there is an increasing need for hollow shaft, and the forming method will be more effective, precise and flexible.

Funds：

国家自然科学基金资助项目（51335009）；陕西省教育厅专项（16JK1462）；陕西省耐磨材料工程技术研究中心专项（2016NMZX07）

作者简介：杨程（1976-），男，博士，副教授；E-mail：yang.cheng@stu.xjtu.edu.cn

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