Paper Title:
Effects of Material Properties on Elastic Characteristics of Cold Forged Part
  Abstract

The dimension of cold forged part is larger than that of the die cavity. The difference could be originated from the various features, such as the elastic characteristics of die and workpiece, thermal influences, and machine-elasticity. Among these features, elastic behavior of die and workpiece has been considered as the most important element for the precision cold forging. In the present study, the effect of material properties of both workpiece and die on the dimensional precision of forged part was investigated using FE and experimental analyses. Three materials, such as SCM420H, Cu-OFHC and Al6061 alloy, were used to divide the effect of the elastic modulus and flow stress on the dimension specifically. From the results of FEA, the elastic deformation of die was found to be more dominant than that of workpiece. The die expansion depends on the flow stress of workpiece during a loading stage. On the other hand, the die contraction during unloading was affected by both the flow stress and elastic modulus of workpiece. The elastic modulus of workpiece affects the elastic recovery of forged part after ejecting stage.

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
853-856
DOI
10.4028/www.scientific.net/MSF.449-452.853
Citation
Y. S. Lee, J.H. Lee, Y. N. Kwon, T. Ishikawa, "Effects of Material Properties on Elastic Characteristics of Cold Forged Part", Materials Science Forum, Vols. 449-452, pp. 853-856, 2004
Online since
March 2004
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: A.O. Akii Ibhadode
Abstract:Design equations based on die expansion are derived for selecting punch and counterpunch dimensions in completely closed die forging. The...
175
Authors: Suthep Yiemchaiyaphum, Masahiko Jin, Sutasn Thipprakmas
Abstract:Considering the advantages of the fine-blanking process, the smooth-cut surface without further operation could be fabricated. However, one...
140
Authors: Jian Yi Pan, Zhao Yao Zhou, Shou Bin Dong
Chapter 3: Materials Forming, Machining and Joining
Abstract:Detail analysis is presented for the influence of elastic deformation on profile wall thickness, the metal flowing and stress load situation...
1439
Authors: Zhi Peng Lv, Xiu Hua Ma, Si Zhu Zhou
Chapter 8: CAD/CAE/CAM
Abstract:According to the structure strength optimization theory, each cavity die layer’s size and inter layer interference were obtained by using the...
1796
Authors: Xiao Xun Zhang, Chi Ying Ma, Yun Hua Sun, Fang Ma
Chapter 15: Materials Processing Technology
Abstract:The hot forging process of automobile engine crankshaft was simulated in the present study on the basis of the finite element software...
1994