Effect of Baffle-block on Material Flow Velocity during Thin-walled Hollow Aluminum Profile Extrusion

2012 ◽  
Vol 48 (16) ◽  
pp. 52 ◽  
Author(s):  
Junquan YU
Keyword(s):  
Flow Velocity ◽  
Material Flow ◽  
Aluminum Profile ◽  
Thin Walled ◽  
Baffle Block ◽  
Aluminum Profile Extrusion

Die Optimal Design for a Large Diameter Thin-Walled Aluminum Profile Extrusion by ALE Algorithm

2011 ◽  
Vol 306-307 ◽  
pp. 459-462
Author(s):  
Peng Liu ◽  
Shui Sheng Xie ◽  
Lei Cheng
Keyword(s):  
Optimal Design ◽  
Flow Velocity ◽  
Material Flow ◽  
Large Diameter ◽  
Extrusion Process ◽  
Arbitrary Lagrangian Eulerian ◽  
Initial Design ◽  
Aluminum Profile ◽  
Thin Walled ◽  
Aluminum Profile Extrusion

Extrusion process of a large diameter thin-walled aluminum profile was simulated by Arbitrary Lagrangian Eulerian (ALE) algorithm based on HyperXtrude software. The results show that the material flow velocity in the bearing exit of the initial design die is non-uniform. Three times modifications were performed and simulated. The optimal design with more uniform flow velocity in the bearing exit was obtained.

scholarly journals Cold Forging Effect on the Microstructure of Motorbike Shock Absorbers Fabricated by Tube Forming in a Closed Die

2021 ◽  
Vol 11 (5) ◽  
pp. 2142
Author(s):  
Trung-Kien Le ◽  
Tuan-Anh Bui
Keyword(s):  
Material Flow ◽  
Cold Forging ◽  
Technological Parameters ◽  
Forming Process ◽  
Tube Forming ◽  
Shock Absorbers ◽  
Thin Walled Tube ◽  
Thin Walled ◽  
Quality Of Products ◽  
Forming Defects

Motorbike shock absorbers made with a closed die employ a tube-forming process that is more sensitive than that of a solid billet, because the tube is usually too thin-walled to conserve material. During tube forming, defects such as folding and cracking occur due to unstable tube forming and abnormal material flow. It is therefore essential to understand the relationship between the appearance of defects and the number of forming steps to optimize technological parameters. Based on both finite element method (FEM) simulations and microstructural observations, we demonstrate the important role of the number and methodology of the forming steps on the material flow, defects, and metal fiber anisotropy of motorbike shock absorbers formed from a thin-walled tube. We find limits of the thickness and height ratios of the tube that must be held in order to avoid defects. Our study provides an important guide to workpiece and processing design that can improve the forming quality of products using tube forming.

FVM Simulation of Large Deformational Aluminum Extrusion Process and Die Bearing Optimization

2010 ◽  
Vol 97-101 ◽  
pp. 400-403
Author(s):  
Rui Wang
Keyword(s):  
Three Dimensional ◽  
Mathematic Model ◽  
Extrusion Process ◽  
Complex Geometries ◽  
Aluminum Extrusion ◽  
Aluminum Profile ◽  
Simulation Results ◽  
Volume Method ◽  
Aluminum Profile Extrusion ◽  
Deform 3D

The mathematic model of three-dimensional aluminum profile extrusion processes using finite volume method (FVM) was established in this paper. Basic theory and key technologies of this model were researched and built. Non-orthogonal blocked structured girds were used to fit complex geometries. Volume of Fluid (VOF) scheme was used to capture the free surface of the deforming materials. A program AE-FVM was written according to the above theories and equations. A thin walled aluminum profile extrusion process was simulated and optimized using AE-FVM. The simulation results were also compared with that simulated by Deform-3D and SuperForge in the same conditions. The feasibility of the mathematic model built in this paper was demonstrated by the simulation results comparison.

FVM Simulation of Porthole Die Extrusion Process for a Large Caliber Aluminum Tube Profile

2015 ◽  
Vol 778 ◽  
pp. 116-119
Author(s):  
Rui Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Extrusion Process ◽  
Aluminum Tube ◽  
Porthole Die ◽  
Aluminum Profile ◽  
Volume Method ◽  
Aluminum Profile Extrusion

Aiming at the aluminum profile extrusion process of a large caliber aluminum tube with porthole die, this paper established the simulation models by using finite element method and finite volume method, respectively. The extrusion process was simulated by using the above two models. The advantages and disadvantages and the applicability of the two simulation methods in simulating large aluminum profile extrusion processes were compared. It is concluded that finite volume method is more suitable than finite element method for simulating aluminum profile extrusion processes with a severe deformation. In addition, the distributions of stress and strain and the material flow patterns in the large caliber aluminum tube extrusion process with porthole die were given in detail. The results can provide useful theoretical guidelines for the process and die design as well as process parameter optimal selection for large aluminum profile extrusion processes with porthole die.

A Novel Method for the Treatment of Wastewater Containing High Concentration of Copper and Arsenic

2011 ◽  
Vol 396-398 ◽  
pp. 631-638
Author(s):  
Bao Zhang ◽  
Jia Feng Zhang
Keyword(s):  
Reaction Time ◽  
Sulfur Dioxide ◽  
Flow Velocity ◽  
Water Flow ◽  
Material Flow ◽  
Reduction Process ◽  
High Concentration ◽  
Water Flow Velocity ◽  
Separation Ratio ◽  
Diffusion Dialysis

Arsenic contamination of water and associated health risks have been reported in many regions of China. Leaching of arsenic from industrial wastewater into groundwater may cause severe contamination, which requires proper treatment before its emission. Therefore, sulfur dioxide reduction combined diffusion dialysis method is adopted to dispose the wastewater containing high concentration of copper and arsenic. Effects of the sulfur dioxide reduction process of the flow of sulfur dioxide, reaction time, reaction temperature and stirring speed and the diffusion dialysis process of the influent acidity, water flow velocity and material flow velocity on the ratio of separation of arsenic and copper were studied in this paper. The results show that on the conditions of the flow of sulfur dioxide of 3 kg/h, reaction time of 1h, at room temperature, stirring speed of 800 r/min and influent acidity of 5 g/L, water flow velocity of 400 ml/h, material flow velocity of 400 ml/h, the integrated effect of separation is best. The separation ratio of copper reaches 94.71 % and that of arsenic is up to 95.63 %.

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