Optimization of open die forging of round shapes using FEM analysis

2006 ◽  
Vol 172 (1) ◽  
pp. 88-95 ◽  
Author(s):  
S.K. Choi ◽  
M.S. Chun ◽  
C.J. Van Tyne ◽  
Y.H. Moon
Keyword(s):  
Fem Analysis ◽  
Die Forging ◽  
Open Die Forging

Analysis on Void Closure Behavior during Hot Open Die Forging

2007 ◽  
Vol 26-28 ◽  
pp. 69-72 ◽  
Author(s):  
Young Seon Lee ◽  
Y.C. Kwon ◽  
Yong Nam Kwon ◽  
Jung Hwan Lee ◽  
S.W. Lee ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Effective Strain ◽  
Fem Analysis ◽  
Void Closure ◽  
X Ray ◽  
Die Forging ◽  
Before And After ◽  
Measured Flow ◽  
Flow Stress Data ◽  
Open Die Forging

Internal voids have to be eliminated for defect-free in some open die forging. The FEM analysis is performed to investigate the overlap defect of cast ingots during cogging stage. The measured flow stress data were used to simulate the cogging process of cast ingot using the practical material properties. Also the numerical analysis of void closure is performed by using the DEFORMTM-3D. The calculated results of void closure behavior are compared with the measured results before and after upsetting, which are scanned by the X-ray scanner. From this result, the criteria for deformation amounts effect on the void closure were estimated into effective strain of 0.6 by the comparison of practical experiment and numerical analysis.

FEM Analysis of Void Closure Behaviour during Open Die Forging of Rectangular Billets

2006 ◽  
Vol 77 (2) ◽  
pp. 116-121 ◽  
Author(s):  
Myung Sik Chun ◽  
Chester J. Van Tyne ◽  
Young Hoon Moon
Keyword(s):  
Fem Analysis ◽  
Void Closure ◽  
Die Forging ◽  
Open Die Forging

A Control Strategy and Upper Bound Solution for Non-Flat Tool Open Die Forging Automation

1999 ◽  
Author(s):  
T. J. Nye
Keyword(s):  
Control Strategy ◽  
Upper Bound ◽  
Sequence Generation ◽  
Bound Solution ◽  
Upper Bound Solution ◽  
Die Forging ◽  
Strategy Model ◽  
Model Predictions ◽  
Open Die Forging ◽  
Good Agreement

Abstract The open die forging process can provide a number of benefits if its costs can be made competitive through automation. This paper describes a control strategy for automated open die forging forming sequence generation. An upper bound solution for forging with radiused tools is developed, along with a method for using this solution to estimate forming results, a necessary component of the control strategy. Model predictions are compared to physical experimental data using plasticine, and show good agreement.

Open Die Forging of Copper Cone

2021 ◽  
pp. 537-548
Author(s):  
A. Shirizly ◽  
G. Harpaz ◽  
A. Shmuel
Keyword(s):  
Die Forging ◽  
Open Die Forging

Hydraulic Press Open Die Forging of 21CrMoV5-7 Steel CCM Roller with Flat Upper and Concave Semi-round Lower Cogging Dies

2021 ◽  
pp. 489-498
Author(s):  
Volodymyr Kukhar ◽  
Oleg Vasylevskyi ◽  
Olha Khliestova ◽  
Ivan Berestovoi ◽  
Elena Balalayeva
Keyword(s):  
Hydraulic Press ◽  
Die Forging ◽  
Open Die Forging

Analysis on Void Closure Behavior during Hot Open Die Forging

2007 ◽  
pp. 69-72
Author(s):  
Young Seon Lee ◽  
Y.C. Kwon ◽  
Yong Nam Kwon ◽  
Jung Hwan Lee ◽  
S.W. Lee ◽  
...  
Keyword(s):  
Void Closure ◽  
Die Forging ◽  
Open Die Forging
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