Paper Title:
Precision Forging of Casting AZ31 Magnesium Inner Spur-Gear
  Abstract

Based on the two-stage forming technology, the casting AZ31 Magnesium alloy bar was forged into cylindrical straight inner gear between the temperature 250°C-400°C. At 250°C, the teeth of the inner gear are almost formed. But there are some cyclic cracks on the surface of the sample. When improving the temperature above 300°C, the surface quality of the sample has greatly improved. According to the result of this experiment, the best temperature range for forging AZ31 magnesium gear is 280°C to 380°C.The forming load gradually reduced with the temperature improved. At 250°C, the forming load is 93t. At the 400°C, the forming load reduces to 80t.The initial grain size of AZ31 magnesium alloy bar is 22μm. The microstructure evolution during the warm deformation was observed by optical microscopy (OM). It is demonstrated that the grain refinement happened during the deformation process.

  Info
Periodical
Materials Science Forum (Volumes 532-533)
Edited by
Chengyu Jiang, Geng Liu, Dinghua Zhang and Xipeng Xu
Pages
13-16
DOI
10.4028/www.scientific.net/MSF.532-533.13
Citation
H. B. Li, M. Huang, J. T. Luo, J. Zhao, "Precision Forging of Casting AZ31 Magnesium Inner Spur-Gear ", Materials Science Forum, Vols. 532-533, pp. 13-16, 2006
Online since
December 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Song Xue, Jie Zhou
Abstract:Precision forging is an important manufacturing procedure of steel synchronizer gear ring forming. FEM software DEFORM_3D was applied to...
226
Authors: Renat M. Imayev, Ayrat A. Nazarov, Radik R. Mulyukov
Abstract:On the basis of generalization of research results obtained at the Institute for Metals Superplasticity Problems, principles of fabrication...
1702
Authors: Tao Wang, Hong Zhen Guo, Jian Hua Zhang, Ze Kun Yao
Abstract:The microstructures and room temperature and 600°C tensile properties of Ti-5.8Al-4.0Sn-4.0Zr-0.7Nb -0.4Si-1.5Ta alloy after isothermal...
153
Authors: Qian Li, Yi Bian, Zhi Ping Zhong, Gui Hua Liu, Ying Chen
Abstract:The cold forging process of large module spur gear with four modules and 59mm breadth is performed by means of numerical simulation method....
2642
Authors: Gui Hua Liu, Zhi Ping Zhong, Yi Bian, Qian Li
Chapter 3: Modeling, Analysis and Simulation
Abstract:The whole precision forging process of spur-gear with large module (module: 4) including warm forging, cold extrusion and cold sizing is...
927