Effects of process parameters on numerical control bending process for large diameter thin-walled aluminum alloy tubes

2009 ◽  
Vol 19 (3) ◽  
pp. 668-673 ◽  
Author(s):  
Cheng LI ◽  
He YANG ◽  
Mei ZHAN ◽  
Xu-dong XU ◽  
Guang-jun LI
Keyword(s):  
Aluminum Alloy ◽  
Process Parameters ◽  
Large Diameter ◽  
Numerical Control ◽  
Bending Process ◽  
Thin Walled

Research on the Properties of Milling and the Process Parameters Optimization for Aluminum-Alloy Thin-Walled Parts

2010 ◽  
Vol 44-47 ◽  
pp. 2842-2846
Author(s):  
Xiao Hui Jiang ◽  
Bei Zhi Li ◽  
Jian Guo Yang ◽  
He Long Wu
Keyword(s):  
Aluminum Alloy ◽  
Process Parameters ◽  
Low Cost ◽  
Parameters Optimization ◽  
Milling Parameters ◽  
Milling Simulation ◽  
Optimization Of Process Parameters ◽  
Thin Walled ◽  
Parts Manufacturing

In this paper, with the milling processing of aluminum-alloy thin-walled parts as the research object, using software AdvantEdge, a milling simulation model is developed to study milling parameters affect on the cutting force, heat and catenation. It is found that by adjusting the ratio of milling parameters, the effects of cutting forces and heat can turn to the favorable direction of workpiece. In addition, we combine numerical simulation with experiments to explore the law of optimization of process parameters. It is discovered that the method of improving the milling speed and reducing the cutting depth properly can ensure the milling efficiency and the quality of the workpiece, providing a scientific insight for achieving high-quality, low-cost and efficient thin-walled parts manufacturing.

FE-Based Analysis of Heat Bending of Thin-Walled Ti-Alloy Tube with Large Diameter and Small Bending Radius

2012 ◽  
Vol 622-623 ◽  
pp. 25-29 ◽  
Author(s):  
Heng Li ◽  
He Yang ◽  
Dan Wang ◽  
Zhi Yong Zhang
Keyword(s):  
Large Diameter ◽  
Numerical Control ◽  
Thickness Variation ◽  
Heat Conducting ◽  
Ti Alloy ◽  
Mechanical Coupling ◽  
Alloy Tube ◽  
Bending Radius ◽  
Wall Thickness Variation ◽  
Thin Walled

The numerical control (NC) heat bending of thin-walled Ti-alloy tube with large diameter and small bending radius with Ф50×1×R75mm (diameter OD bending radius CLR) is explored by 3D-FE thermal-mechanical coupling simulation of heat conducting and NC bending. The results show that: (1) The heating of both pressure die and mandrel is proved to be appropriate to obtain the required temperature field. (2) In terms of wall thickness variation, wrinkling and cross-section deformation, the optimum span of the key parameters are obtained: the bending velocity of 0.4rad/s, the matched pressure die speed of 80%-110%, and temperature of 600-800°C.

Velocity Optimization on Squashing and Bending Process of Large Diameter Elbow

2011 ◽  
Vol 194-196 ◽  
pp. 2204-2208
Author(s):  
Jian Zhang ◽  
Tong Mei Xiao ◽  
Liang Chu ◽  
Da Sen Bi
Keyword(s):  
Process Parameters ◽  
Large Diameter ◽  
Second Step ◽  
Fem Simulations ◽  
Bending Process ◽  
Simulation Results

FEM simulations of squashing and bending process of large diameter elbow was applied to analyze the influence of squashing velocities, one of the key process parameters, on the deformation of the tube. In this study the squashing distance of first step is 300mm after several simulation attempts, corresponding to different squashing speeds and different bending velocities of second step. The simulation results of different velocities are compared and discussed. In the end the final velocities of the two steps are given.

Experimental study of pulsed laser bending process parameters of 6061 aluminum alloy sheet

2019 ◽  
Vol 6 (4) ◽  
pp. 046526
Author(s):  
Liang Guo ◽  
Peng Cai ◽  
Hao Wang ◽  
Yao Chen ◽  
Qingmao Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Aluminum Alloy ◽  
Process Parameters ◽  
Pulsed Laser ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Laser Bending ◽  
6061 Aluminum Alloy ◽  
Bending Process

Numerical Simulation on Influence of Clearance and Friction on Wrinkling in Bending of Aluminum Alloy Rectangular Tubes

2007 ◽  
Vol 546-549 ◽  
pp. 833-838 ◽  
Author(s):  
Gang Yao Zhao ◽  
Yu Li Liu ◽  
He Yang
Keyword(s):  
Aluminum Alloy ◽  
Friction Coefficient ◽  
Model Simulation ◽  
Three Dimension ◽  
Rotary Draw Bending ◽  
Fem Model ◽  
Bending Process ◽  
Rectangular Tube ◽  
Thin Walled ◽  
Draw Bending

The clearance and friction have large influence on wrinkling in rotary draw bending process of thin-walled rectangular tube. In this paper, a three-dimension Al FEM model of rotary draw bending of thin-walled rectangular tube is built under the ABAQUS/ Explicit environment. Based on the model, simulation and analysis of rotary draw bending for aluminum alloy 3A21 thin-walled rectangular tube have been carried out. The results show that the height of wrinkling wave decreases obviously with the decrease of the clearance between mandrel and tube or with the increase of the friction coefficient between wiper die and tube; however, the effect of friction coefficient on wrinkling becomes weaker while increasing the clearance between mandrel and tube. The achievements of this study provide a guideline for determining the process parameters for thin-walled rectangular tube in rotary draw bending process.

scholarly journals Evaluation of the sensitivity of springback to various process parameters of aluminum alloy sheet with different heat treatment conditions

2021 ◽  
Vol 9 (3) ◽  
pp. 323-334 ◽  
Author(s):  
S. Hakimi ◽  
A. Soualem
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloy ◽  
Boundary Conditions ◽  
Process Parameters ◽  
Hold Time ◽  
Testing Machine ◽  
Fe Model ◽  
Tensile Testing Machine ◽  
Stretch Bending ◽  
Bending Process

The forming steps by permanent deformation controlled by the tools generate a distribution of stresses inside the material which directly depends on the work hardening properties of the latter. The change in boundary conditions following the removal of the tools imposes the material to redistribute the stresses in the sections in a manner compatible with the new boundary conditions. This new distribution necessarily operates by local elastic deformations that result globally in a general change of shape called springback. This geometrical deviation can be minimized by the meticulous focus of the tools, but it cannot generally be completely annihilated due to the influence of several parameters. For this reason, the study of the influence of the different technological factors and physico-metallurgical parameters on the springback for the different metals is very important to design and properly realize forming tools. The main objective of this work is to find solutions to problems encountered in sheet metal forming such as the problem of springback. Our work has two essential purposes: the first is summarized in an experimental study based on theoretical analyses. To this end, much effort is made to add a new design of parts for a U-type stretch-bending device and adapt it to a tensile testing machine. This design has the advantage of modifying and assembling all parameters affecting springback at the same time and also of carrying out several forming processes on the same device. The second goal is the experimental and numerical prediction of springback, and the study of the effect of various stretch-bending process parameters such as punch velocity, the orientation of the sheet (anisotropy), hold time and punch-die clearance on springback behavior under heat treatment of aluminum alloy sheets with three different rolling directions (0°,45°,90°). A finite element (FE) model of stretch-bending has been established by utilizing ABAQUS/CAE software. From this analysis, it can be concluded that the springback is affected by the anisotropy of the sheet and the heat treatment in the stretch-bending process. The obtained experimental results were compared with the numerical simulations found in good agreement.

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