Systematic investigation of deformation behavior of tubes in a three-coil electromagnetic forming process

2022 ◽  
Author(s):  
Shaowei Ouyang ◽  
Xiaofei Xu ◽  
Xiaoxiang Li ◽  
Zhipeng Lai ◽  
Xiaotao Han ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Systematic Investigation ◽  
Electromagnetic Forming ◽  
Forming Process

Coil-less electromagnetic forming process with uniform-pressure characteristics for shaping sheet metals

2021 ◽  
Vol 70 ◽  
pp. 140-151
Author(s):  
Quanliang Cao ◽  
Xian Li ◽  
Zhenhao Li ◽  
Limeng Du ◽  
Liangyu Xia ◽  
...  
Keyword(s):  
Electromagnetic Forming ◽  
Uniform Pressure ◽  
Sheet Metals ◽  
Forming Process ◽  
Pressure Characteristics

Microstructure and deformation behavior of Ti-10V-2Fe-3Al alloy during hot forming process

2015 ◽  
Vol 30 (6) ◽  
pp. 1332-1337
Author(s):  
Renguo Guan ◽  
Zhanyong Zhao ◽  
KS Choi ◽  
CS Lee
Keyword(s):  
Deformation Behavior ◽  
Hot Forming ◽  
Forming Process

Deformation Behavior and Constitutive Equation of 42CrMo Steel at High Temperature

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1614
Author(s):  
Hongqiang Liu ◽  
Zhicheng Cheng ◽  
Wei Yu ◽  
Gaotian Wang ◽  
Jie Zhou ◽  
...  
Keyword(s):  
High Temperature ◽  
Flow Stress ◽  
Strain Rate ◽  
Thermal Processing ◽  
Deformation Behavior ◽  
Reduction Process ◽  
Ann Model ◽  
Forming Process ◽  
Temperature Reduction ◽  
42Crmo Steel

High-temperature reduction pretreatment (HTRP) is a process that can significantly improve the core quality of a billet. The existing flow stress data cannot meet the needs of simulation due to lack of high temperature data. To obtain the hot forming process parameters for the high-temperature reduction pretreatment process of 42CrMo steel, a hot compression experiment of 42CrMo steel was conducted on Gleeble-3500 thermal-mechanical at 1200–1350 °C with the rates of deformation 0.001–10 s−1 and the deformation of 60%, and its deformation behavior at elevated temperature was studied. In this study, the effects of flow stress temperature and strain rate on austenite grain were investigated. Moreover, two typical constitutive models were employed to describe the flow stress, namely the Arrhenius constitutive model of strain compensation and back propagation artificial neural network (BP ANN) model. The performance evaluation shows that BP ANN model has high accuracy and stability to predict the curve. The thermal processing maps under strains of 0.1, 0.2, 0.3, and 0.4 were established. Based on the analysis of the thermal processing map, the optimal high reduction process parameter range of 42CrMo is obtained: the temperature range is 1250–1350 °C, and the strain rate range is 0.01–1 s−1.

Investigation on Friction Coefficient Considering Al-Si Coating Layer Fracture of Boron Sheets in Hot and Cold Deep Drawing

2020 ◽  
Vol 846 ◽  
pp. 117-121
Author(s):  
Min Sik Lee ◽  
Jun Park ◽  
J.S.Suresh Babu ◽  
Chung Gil Kang
Keyword(s):  
Friction Coefficient ◽  
Deep Drawing ◽  
Deformation Behavior ◽  
Coating Layer ◽  
Surface Condition ◽  
Forming Limit ◽  
Boron Steel ◽  
Drawing Process ◽  
Forming Process ◽  
Deep Drawing Process

In this paper, hot and cold deep drawing processes are determined with direct deep drawing process and indirect deep drawing process. To predict the friction coefficient, the finite-element method, which can predict deformation behavior until the fracture of a blank sheet, was proposed using the forming limit diagram (FLD) curve. The effect of fracturing of the coating layer on the friction coefficient during the hot and cold deep drawing processes was investigated. The deformation behavior of the coating layer of the boron steel sheet that affects the friction coefficient in the hot and cold deep drawing processes was also proposed. A forming method that can control the surface condition of the formed product is further proposed by explaining the fracture of the coating due to the forming process.

Improved workability using preheating in the electromagnetic forming process

2019 ◽  
Vol 33 (6) ◽  
pp. 2809-2815 ◽  
Author(s):  
Seung-Min Tak ◽  
Han-Bin Kang ◽  
In-Seok Baek ◽  
Seok-Soon Lee
Keyword(s):  
Electromagnetic Forming ◽  
Forming Process

Geometric issues in V-bending electromagnetic forming process of 2024-T3 aluminum alloy

2015 ◽  
Vol 19 ◽  
pp. 171-182 ◽  
Author(s):  
Weiren Xiong ◽  
Wenping Wang ◽  
Min Wan ◽  
Xinjun Li
Keyword(s):  
Aluminum Alloy ◽  
Electromagnetic Forming ◽  
Forming Process
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