Research on Influence of Process Parameters on Sheet Metal Extrusion Force

2009 ◽  
Vol 16-19 ◽  
pp. 515-519
Author(s):  
Hua Xiang ◽  
Xin Cun Zhuang ◽  
Zhen Zhao
Keyword(s):  
Sheet Metal ◽  
Process Parameters ◽  
Fem Simulation ◽  
Extrusion Process ◽  
Orthogonal Experimental Design ◽  
Extrusion Force ◽  
Influence Of Process Parameters ◽  
Tool Shape ◽  
Simulation And Experiment ◽  
Metal Extrusion

Extrusion force plays a significant role on sheet metal extrusion process. It is characterized by various process parameters including material properties, extrusion ratio, friction, tool shape etc. In this paper, a reasonable FEM model of sheet metal extrusion process was established and validated by comparing the results of simulation and experiment firstly. Based on the reliable model, the effect on extrusion force of various process parameters was investigated with orthogonal experimental design combined FEM simulation. The work presented in this paper has laid certain foundation for further work of modeling and optimizing extrusion force.

Effect of Process Parameters on Welding Variables during Linear Friction Welding of Ti-6Al-4V Alloy

2011 ◽  
Vol 314-316 ◽  
pp. 979-983
Author(s):  
Tie Jun Ma ◽  
Xi Chen ◽  
Wen Ya Li
Keyword(s):  
Titanium Alloy ◽  
Process Parameters ◽  
Friction Welding ◽  
Welding Process ◽  
Orthogonal Experimental Design ◽  
Linear Friction Welding ◽  
Influence Of Process Parameters ◽  
Linear Friction ◽  
Suitable Process ◽  
Axial Shortening

The orthogonal experimental design was conducted for linear friction welding of Ti-6Al-4V titanium alloy (TC4). The friction power and joint temperature were collected during the welding process. The influence of process parameters on the axial shortening was analyzed. The suitable process parameters were determined by investigating the joint appearance, the requirement of axial shortening and welding variables during welding. The results provide important reference for establishing process parameters of linear friction welding in practice.

scholarly journals Study of Microstructure and Mechanical Properties Effects on Workpiece Quality in Sheet Metal Extrusion Process

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Chatkaew Suriyapha ◽  
Bopit Bubphachot ◽  
Sampan Rittidech
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Sheet Metal ◽  
Material Flow ◽  
Flow Behavior ◽  
Fem Simulation ◽  
Localized Plastic Deformation ◽  
Metal Extrusion ◽  
Microstructure Effect ◽  
1045 Steel

Sheet metal extrusion is a metal forming process in which the movement of a punch penetrates a sheet metal surface and it flows through a die orifice; the extruded parts can be deflected to have an extrusion cavity and protrusion on the opposite side. Therefore, this process results in a narrow region of highly localized plastic deformation due to the formation and microstructure effect on the work piece. This research investigated the characteristics of the material-flow behavior during the formation and its effect on the microstructure of the extruded sheet metal using the finite element method (FEM). The actual parts and FEM simulation model were developed using a blank material made from AISI-1045 steel with a thickness of 5 mm; the material’s behavior was determined subject to the punch penetration depths of 20%, 40%, 60%, and 80% of the sheet thickness. The results indicated the formation and microstructure effects on the sheet metal extrusion parts and defects. Namely, when increasing penetration, narrowing the die orifice the material flows through, the material was formed by extruding, and defects were visibility, and the microstructure of the material’s grains’ size was flat and very fine. Extrusion defects were not found in the control material flow. The region of highly localized plastic deformation affected the material gain and mechanical properties. The FEM simulation results agreed with the experimental results. Moreover, FEM could be investigated as a tool to decrease the cost and time in trial and error procedures.

Application of FEM Simulation to the Effects of Working Parameters on Isothermal Forging of 7075 Aluminum Alloy

2009 ◽  
Vol 16-19 ◽  
pp. 559-564
Author(s):  
Wei Wei Wang ◽  
Jian Li Song ◽  
Shou Jing Luo
Keyword(s):  
Process Parameters ◽  
Flow Line ◽  
Effective Strain ◽  
Fem Simulation ◽  
Finite Element Method Simulation ◽  
Influence Of Process Parameters ◽  
Precision Forging ◽  
Screw Propeller ◽  
Forming Temperature ◽  
Working Parameters

The influence of process parameters on isothermal precision forging of a screw propeller is studied by means of FEM (Finite Element Method) simulation. The even degree of deformation, distributions of the flow line and effective strain within the billet and the forging load are analyzed. Notable difference of the effective strain is existed between the blades and the wheel hub of the screw propeller. Large deformation of the blade has been obtained, which is favorable for the blade strength. The material flow and the distribution of deformation can be adjusted by changing the process parameters and the forming quality can be improved. Both the forming temperature and punch speed have large influence on the forming load but less influence on the distribution of deformation. The result of simulation shows that the precision forging of screw propellers can be formed with the isothermal precision forging satisfactorily.

Numerical Analysis on the Density Uniformity for SiCp/2024Al in the Extrusion Process

2016 ◽  
Vol 850 ◽  
pp. 536-543 ◽  
Author(s):  
Yan Ju Wang ◽  
De Sheng Chu ◽  
Peng Jun Tang ◽  
Yong Jun Guan
Keyword(s):  
Numerical Simulation ◽  
Process Parameters ◽  
Physical Simulation ◽  
Influence Factors ◽  
Fem Simulation ◽  
Aluminum Matrix ◽  
Strain Curve ◽  
Extrusion Process ◽  
Aluminum Matrix Composites ◽  
Matrix Composites

Many factors can influence the density uniformity of the SiC particle reinforced aluminum matrix composites, including the material preparation method and the material processing technology. The influence factors on the density uniformity of SiCp/2024Al in the extrusion process were studied in the present investigation. Those factors contain the extrusion ratio, the extrusion velocity, the temperature and the friction coefficient. The flow stress of this material under different temperatures and strain velocities was tested by heat physical simulation experiments. As a result, the true stress-strain curve was obtained and the phenomenological constitutive equation was established, and the FEM simulation was used for the extrusion process. The velocity gradient computed by the numerical simulation was used to describe the density uniformity. The density uniformity caused by different extrusion process parameters was compared and analyzed. The results showed that the density uniformity was improved obviously by the optimization of extrusion process parameters. At last, the real extrusion process test was organized to verify the numerical simulation results and the most suitable characteristic parameters of the extrusion mold and the process was finally determined.

Multi-Scale Numerical Simulation of H62 Brass for Hot-Extrusion Process

2010 ◽  
Vol 97-101 ◽  
pp. 2880-2885
Author(s):  
Yan Hong Xiao ◽  
Chen Guo ◽  
Xiao Kang Tian
Keyword(s):  
Numerical Simulation ◽  
Process Parameters ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Influence Of Process Parameters ◽  
Multi Scale ◽  
Microstructure Prediction ◽  
Sine Functions

Thermal deformation process of H62 brass is studied, multi-scale simulations of macro-forming property and microstructure distribution are carried out for the hot-extrusion process of double cups part with flange utilizing numerical simulation technology, the process parameters are determined and the microstructure of extruded parts is predicted. The constitutive equation of H62 brass under high temperature deformation is established with isothermal compression test, and the results indicate that the flow stress accords to Arrhenius hyperbolic sine functions. The model of microstructure evolution during hot-deformation is founded and the influence of process parameters on microstructure is revealed. The microstructure prediction on extruded part shows that the simulated results agree well with the experimental results. The high-quality products are obtained using the optimal process parameters.

Optimization of Process Parameters of Thin Aluminum-Lithium Alloy Sheet Metal Laser Forming Based on Water-Cooling

2010 ◽  
Vol 154-155 ◽  
pp. 1152-1156
Author(s):  
Min Feng Jiang ◽  
Lei Ding ◽  
Yuan Yuan Zheng ◽  
Xiao Wang ◽  
Hui Xia Liu
Keyword(s):  
Sheet Metal ◽  
Process Parameters ◽  
Laser Forming ◽  
Orthogonal Experimental Design ◽  
Beam Diameter ◽  
Water Cooling ◽  
Lithium Alloy ◽  
Aluminum Lithium Alloy ◽  
Thin Aluminum ◽  
Aluminum Lithium

Laser forming is a new flexible sheet metal forming process. By means of the theory of orthogonal experimental design method, design of experiment and optimization were carried out on thin aluminum-lithium alloy AA2090 sheet metal laser forming under the condition of water-cooling. And through the calculation and analysis of the experiments, the effect of the four process parameters related to the energy of laser beam on bending angle under the condition of water-cooling were ranked in order of laser power, number of scan, scan speed and beam diameter. Furthermore, the optimum process parameters were obtained, and experiment verifications were carried out.

Study on the Influence of Process Parameters on Curling Springback

2013 ◽  
Vol 765-767 ◽  
pp. 202-205
Author(s):  
Zhao Hu Deng ◽  
Yan Qin Zhang
Keyword(s):  
Sheet Metal ◽  
Process Parameters ◽  
Material Properties ◽  
Friction Condition ◽  
Influence Of Process Parameters ◽  
Punch Force ◽  
The Subject

When the sheet metal is curled into the pipe, springback always makes it in poor roundness. Experiments show that the process parameters can influence the springback value. So in this paper it took series of researches to find the regularity of process parameters influence the curling springback. In this paper it designed one set of curling mould, and chose the punch force, material properties, blank thickness and friction condition as the subject studied separately. After experiments it obtained the influence regularity, and then it took an analysis on the phenomenon in this paper. The results will be helpful to decrease the springback value in curling process.

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