Analysis on Temperature Field of Work-Piece during Cross Wedge Rolling

2011 ◽  
Vol 230-232 ◽  
pp. 352-356
Author(s):  
Wen Ke Liu ◽  
Kang Sheng Zhang ◽  
Zheng Huan Hu
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Metal Flow ◽  
Work Piece ◽  
Contact Deformation ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Rigid Plastic ◽  
Finite Element Software ◽  
Deform 3D

Based on the rigid-plastic deformation finite element method and the heat transfer theories, the forming process of cross wedge rolling was simulated with the finite element software DEFORM-3D. The temperature field of the rolled piece during the forming process was analyzed. The results show that the temperature gradient in the outer of the work-piece is sometimes very large and temperature near the contact deformation zone is the lowest while temperature near the center of the rolled-piece keeps relatively stable and even rises slightly. Research results provide a basis for further study on metal flow and accurate shaping of work-piece during cross wedge rolling.

A Study on the Cellphone Cover-Forming Process of Titanium Alloys Using the Finite Element Method

2011 ◽  
Vol 121-126 ◽  
pp. 1550-1554
Author(s):  
Dyi Cheng Chen ◽  
Ming Ren Chen ◽  
Fung Ling Nian
Keyword(s):  
Finite Element ◽  
Effective Strain ◽  
Simulation Software ◽  
Work Piece ◽  
Process Conditions ◽  
Forming Process ◽  
Rigid Plastic ◽  
Finite Element Software ◽  
Plastic Deformation Behavior ◽  
3D Software

In recent years, the style of 3C products demanded thin and small results due to gradual trends, though most of the industry is forming a continuous manner of stamping. However, the material thickness cannot be changed in products. This paper employs the rigid-plastic finite element (FE) DEFORMTM 3D software to investigate the plastic deformation behavior of titanium alloy (Ti-6Al-4V) workpiece for the forming processes of cellphone covers. In addition, this study utilizes the Solid Work 2010 3D graphics-rendering software for modeling, which is simulation software used to import various forming process conditions. The software analyzes the effective strain, the effective stress, critical damage value, and the die radius load distribution of the work-piece. Furthermore, this study used simulative software to analyze its forming processes for changes in grain size of the microstructure. The analytical results confirm the suitability of the current finite element software for forming processes of cellphone covers.

The Strain Analysis of Plate Cross Wedge Rolling of Spiral Shaft Parts

2014 ◽  
Vol 941-944 ◽  
pp. 1895-1900 ◽  
Author(s):  
Fa Shen ◽  
Wen Jing Yu ◽  
Wen Fei Peng ◽  
Xue Dao Shu ◽  
Chun Jie Yu
Keyword(s):  
Finite Element ◽  
Manufacturing Industry ◽  
Metal Flow ◽  
Strain Analysis ◽  
Element Model ◽  
Rolling Process ◽  
Cross Wedge Rolling ◽  
Rigid Plastic ◽  
Equipment Manufacturing ◽  
Deform 3D

The spiral shaft parts have been widely applied in machinery and equipment manufacturing industry, the paper based on DEFORM-3D, the rigid-plastic finite element model of cross wedge rolled spiral shaft parts was established. The rolling process was simulated, the strain laws were analyzed, and the characteristics of metal flow were explored. From which we can find Plate cross wedge rolled spiral shaft parts is completely feasible. The results provide the theoretic basis for precision deformation of cross wedge rolled spiral shaft parts.

Study on the Forming Mechanism for Second Step on Hollow Rotor Shaft by 4-Roll Cross Wedge Rolling

2013 ◽  
Vol 288 ◽  
pp. 271-275 ◽  
Author(s):  
Yong Ming Yang ◽  
Jiu Chuan Chen ◽  
Feng Wen Cheng ◽  
Jun Zhao
Keyword(s):  
Rolling Force ◽  
Metal Flow ◽  
Energy Parameter ◽  
Second Step ◽  
Motor Shaft ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Rigid Plastic ◽  
Stress Strain ◽  
Finite Element Software

It is very important for accurately grasping stress, strain, and metal flow during the hollow motor shaft rolling, and it is also foundation of forming regularity, rolling force and energy parameter. The cross wedge rolling process of hollow motor shaft was simulated through rigid-plastic finite element software deform-3D. According to the simulation results, the distribution of internal stress, strain field inside the second step of the motor shaft had been obtained, revealed the metal flow ruler for the second step during forming process and it could effected on the metal flow ruler for the first step.

scholarly journals Numerical and Experimental Study on the Thermodynamic Coupling of Ti-6Al-4V Blade Preforms by Cross Wedge Rolling

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1054 ◽  
Author(s):  
Hongchao Ji ◽  
Jianwei Dong ◽  
Long Xin ◽  
Xiaomin Huang ◽  
Jinping Liu
Keyword(s):  
Titanium Alloy ◽  
Metal Flow ◽  
High Strength ◽  
High Heat ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Finite Element Software ◽  
Distribution Laws ◽  
Aero Engines ◽  
Thermodynamic Coupling

Titanium alloy possesses high strength, good corrosion resistance, and high heat resistance; thus, it is widely used in the aerospace and other fields. Blades of titanium alloy are important components of aero-engines and are essential to the engines operation. In this work, a Ti-6Al-4V blade was formed by cross wedge rolling (CWR) to realize the near net-shape of an aero-engine blade. First, thermal simulation experiments of Ti-6Al-4V were carried out to obtain the thermal deformation constitutive equation of the alloy. The finite element software Deform-3D was then used to simulate the thermodynamic coupling of the forming process, and the metal flow, temperature, and stress–strain distribution laws during the forming process were analyzed. Finally, experimental verification of the Ti-6Al-4V blade was carried out by using an H500 CWR mill. The results revealed the feasibility of applying CWR to preform Ti-6Al-4V blades.

FEM simulation of laser forming process of shipbuilding steel plate

2004 ◽  
Vol 120 ◽  
pp. 507-512
Author(s):  
Zhang Liwen ◽  
Zhong Qi ◽  
Pei Jibin ◽  
Zhang Guoliang ◽  
Xia Yuanliang
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Thermal Stresses ◽  
Steel Plate ◽  
Fem Simulation ◽  
Laser Forming ◽  
Transient Temperature ◽  
Forming Process ◽  
Shipbuilding Steel ◽  
Finite Element Software

Laser forming has become a promising technique to form sheet metal in recent years. This new forming process can produce plastic deformation by thermal stresses resulted from the irradiation of laser beam scanning. In this paper, a 3-D thermo-mechanical FEM model was developed to simulate the laser forming process of shipbuilding steel plate. The finite-element software MSC.Marc was used to calculate the temperature field, stress field and strain field during laser forming process. The transient temperature field and the final bending angle were predicted. Then the effect of laser forming process technical parameters was studied. To evaluate the accuracy of the simulation, a laser forming experiment was performed. It is demonstrated that the finite element simulation results are in good agreement with experimental results.

Numerical Simulation of Cold Heading and Extruding for Spiral Bevel Gear

2010 ◽  
Vol 139-141 ◽  
pp. 1202-1205
Author(s):  
Ying Ying Chen ◽  
Wen Jie Feng ◽  
Ying Yang ◽  
Yong Du
Keyword(s):  
Bevel Gear ◽  
Forming Process ◽  
Rigid Plastic ◽  
Flow Process ◽  
Bevel Gears ◽  
Finite Element Software ◽  
Optimum Diameter ◽  
Spiral Bevel ◽  
Deform 3D

This paper develops an opened forging and divided flow process for spiral bevel gears. By the help of rigid-plastic finite-element software DEFORM-3D, this paper designed cold-extruding part and concave die for bevel gear in the rear running gear of tri-motorcycle and simulated the forming process of cold-heading and extruding. On condition of guaranteeing shaping quality of teeth, the optimum diameter of die porthole was made sure by analyzing the effect of porthole size on volume of billet and plastic force. The experiment results show that the design parameter is reasonable and simulation results are helpful to the design of die.

Numerical Simulation for Thick-Walled Hollow Axle during Cross Wedge Rolling

2011 ◽  
Vol 337 ◽  
pp. 270-273 ◽  
Author(s):  
Yang Jiang ◽  
Bao Yu Wang ◽  
Zheng Huan Hu ◽  
Jian Guo Lin
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Finite Element ◽  
Numerical Model ◽  
Rolling Process ◽  
Cross Wedge Rolling ◽  
Finite Element Software ◽  
Temperature Distributions ◽  
Simulation Results ◽  
Deform 3D

The paper investigates a process of cross wedged rolling (CWR) for manufacturing thick-walled hollow axles. A finite element numerical model coupled deformation and heat transfer of CWR is established using commercial finite element software DEFORM-3D. The rolling process of hollow axle during CWR is simulated successfully. The stress, strain and temperature distributions of workpiece are obtained and analyzed. The simulation results show that forming thick-walled hollow axles through CWR is feasible.

Analysis of Square Billet Cross Wedge Rolling Process Using Finite Element Method

2012 ◽  
Vol 271-272 ◽  
pp. 406-411 ◽  
Author(s):  
Wen Yu Ma ◽  
Bao Yu Wang ◽  
Jing Zhou ◽  
Qiao Yun Li
Keyword(s):  
Finite Element ◽  
Rolling Force ◽  
Element Model ◽  
Rolling Process ◽  
Simulation Software ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Radial Forces ◽  
Forming Angle ◽  
Deform 3D

The aim of this paper is to determine whether the train axle cross wedge rolling(CWR) using square billet as blank is available or not. Based on numerical simulation software DEFORM-3D, we built the finite element model. And the whole forming process was simulated successfully. The stress and strain distributions of workpiece in the process were analyzed. The effect of forming angle, stretching angle and billet size on rolling force was investigated, then determined the proper process parameters. The differences between the round billet rolling and the square billet rolling were obtained by comparing the tangential, axial and radial forces during the rolling process. The studied results show the availability of using square billet as blank in train axle CWR and provide important realistic meaning and application value.

Numerical Simulation on Spinning Forming Process of Automotive Wheel Rim

2011 ◽  
Vol 704-705 ◽  
pp. 1458-1464
Author(s):  
Da Sen Bi ◽  
Guang Yang ◽  
Liang Chu ◽  
Jian Zhang ◽  
Zhi Hua Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Technological Parameter ◽  
Reference Data ◽  
Forming Process ◽  
Finite Element Software ◽  
Wheel Rim ◽  
Spinning Process ◽  
Deform 3D

In this paper, the spinning process of automotive wheel rim is simulated with the finite element software DEFORM-3D. The forming of the automotive wheel rim based on finite element method is completed by the improvement of the spinning process. it can be divided into three different stages: spinning stage, flattening stage and shaping stage. The reference data for technological parameter of spinning process is achieved.The results are useful to the further research of the spinning process of automotive wheel rim.

Analysis of Stress and Strain on Shaft Parts for Closed Type of Cross Wedge Rolling during Stretching Stage

2015 ◽  
Vol 1095 ◽  
pp. 684-688
Author(s):  
Kai Yu Ji ◽  
Xue Dao Shu ◽  
Chao Cheng
Keyword(s):  
Engineering Application ◽  
Stress And Strain ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Finite Element Software ◽  
Closed Type ◽  
Theoretical Significance ◽  
Rolling Technology ◽  
Deform 3D

To improve the quality of shafts parts end in cross wedge rolling, this paper applied closed type of cross wedge rolling technology to form shaft parts. By using finite element software DEFORM-3D, simulation of forming process for closed type of cross wedge rolling was carried out. The distribution of the stress field and strain field during stretching stage is characterized as the metallic flowing of the rolling forming process. These results have great theoretical significance and engineering application value in the study of the generated mechanism of the end concavity for the closed type of cross wedge rolling and the improvement of the quality of rolled piece end.

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