Preform optimization for the anchor shackle during closed die forging process on one ton hammer

2021 ◽  
Author(s):  
Vishal A. Pandya ◽  
P.M. George
Keyword(s):  
Forging Process ◽  
Die Forging ◽  
Closed Die Forging ◽  
Preform Optimization

Numerical Simulation Analysis on Cold Closed-Die Forging of Differential Satellite Gear in Car

2008 ◽  
Vol 575-578 ◽  
pp. 517-524 ◽  
Author(s):  
Yao Zong Zhang ◽  
Jian Bo Huang ◽  
Xue Lin ◽  
Quan Shui Fang
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Bevel Gear ◽  
Cold Forging ◽  
Forging Process ◽  
Die Forging ◽  
Closed Die Forging ◽  
Forming Defects ◽  
Deform 3D

The cold closed-die forging process of the gear is a kind of new technique of the precise forming of gear in recent years. In this paper, the cold closed-die forging process of differential satellite gear in car was analyzed through numerical simulation method. Forming mold was designed with Pro/E Wildfire2.0 which included four components : upper punch, lower punch, tooth shape upper die and lower die for Normal Cone. The three-dimensional models of satellite bevel gear mould were built and imported into numerical simulation software DEFORM-3D. Because the gear has the uniform circumferential features, in order to save time and improve the accuracy, only one tooth was simulated, and the full simulation outcome of 10 teeth was mirrored from this one. Through the numerical simulation analysis of DEFORM-3D, the instantaneous deformation and stress filed were gained. Forming defects were forecasted and the cold closed-die forging rule for satellite gear used in car was obtained which can provide effective references for no-flash cold forging process of planet bevel gear and the mold design.

Development of a CAD/CAM system for the closed-die forging process

2003 ◽  
Vol 138 (1-3) ◽  
pp. 436-442 ◽  
Author(s):  
M Jolgaf ◽  
A.M.S Hamouda ◽  
S Sulaiman ◽  
M.M Hamdan
Keyword(s):  
Forging Process ◽  
Die Forging ◽  
Closed Die Forging ◽  
Cad Cam

Analysis of Finite Volume of Forging Process of Connecting Rod

2011 ◽  
Vol 341-342 ◽  
pp. 313-317
Author(s):  
Reyhaneh Maarefdoust ◽  
Mahdi Maarefdoust
Keyword(s):  
Finite Volume ◽  
Work Piece ◽  
Connecting Rod ◽  
Forging Process ◽  
Its Analysis ◽  
Die Forging ◽  
Closed Die Forging ◽  
Power And Energy ◽  
Significant Factors

Forging is a process of forming metals which leads to the deforming of work piece through its pressing. Shape and the number of pre-forms are the most significant issues in designing the process of closed die forging. The criteria for producing the pre-forms are creating a faultless die, fully the die completely, and homogenous deformation. In this study simulation in the designing the forging process of connecting rod via Pro/Engineer software and optimization of pre-form die and its analysis through the use of SuperForge software were investigated. Concerning the results, the simulation forging of connecting rod, power and energy of each phase and the effects of other significant factors such as temperature can be explored.

Research on Closed Die Forging Process of Car Steering Knuckle

2008 ◽  
Vol 575-578 ◽  
pp. 204-209 ◽  
Author(s):  
De Ying Zhao ◽  
Lian Dong Zhang ◽  
Hui Xue Sun
Keyword(s):  
Numerical Simulation ◽  
High Energy ◽  
Extrusion Pressure ◽  
Forming Process ◽  
Forging Process ◽  
Dimensional Precision ◽  
Die Forging ◽  
Closed Die Forging ◽  
Plastic Forming ◽  
Die Extrusion

Steering knuckle, which has strict requirements with regard to dimensional precision and quality, is a key component in cars. Conventional plastic forming methods are involved with intricate procedures and high energy consumptions. Normally, a 40 MN hot die forging press or a 100 KJ electro-hydraulic hammer is required to produce the steering knuckle. Closed die forging, which is a new precision forming technology developed in recent years, has some virtues, such as good mechanical properties, easy to form and improving of metal plastic deformation. Aiming at Jetta steering knuckle in this paper, the technology of two forging steps in one heat is presented. This technology is mainly composed of precision pre-forging, which is a closed die extrusion with the extrusion belt, and open finish-forging. The pre-forging process and finish-forging process are numerically simulated using the FEM software DEFORM-3D. For the closed die extrusion forming process, which is the key component of the technology, some key problems were researched, such as the flowing and filling regularity, extrusion-belt length, punch size, punch movement, lubrication and the relationship between the clamping pressure and the extrusion pressure. For the finish-forging process, the flowing and filling regularity of the finish-forging part was studied to verify the correct shape and dimension of the pre-forging part. Numerical simulation with regard to the pre-forging process shows that the closed die forging can not only help to form the pre-forging part, but also decrease the extrusion pressure to be less than 8 MN, extend the mould’s service life and increase the utilization ratio of materials to be more than 75%. Numerical simulation of the finish-forging process shows that the pre-forging part design is rational. In addition, the forging experiments were carried out using the dies designed in particular. The experiments show that the technology is feasible and can markedly improve the mechanical property of the forging piece.

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