Influence of process parameters on properties of AA6082 in hot forming process

2017 ◽  
Vol 27 (11) ◽  
pp. 2454-2463 ◽  
Author(s):  
Wen-yu MA ◽  
Bao-yu WANG ◽  
Jian-guo LIN ◽  
Xue-feng TANG
Keyword(s):  
Process Parameters ◽  
Hot Forming ◽  
Forming Process ◽  
Influence Of Process Parameters

Research on Synchronized Cooling Hot Forming Process of 6016 Aluminum Alloy

2012 ◽  
Vol 452-453 ◽  
pp. 81-85 ◽  
Author(s):  
Ming He Chen ◽  
Y.Y. Cao ◽  
W. Chen ◽  
Guo Liang Chen
Keyword(s):  
Aluminum Alloy ◽  
Process Parameters ◽  
High Strength ◽  
Strengthening Mechanism ◽  
Alloy Sheet ◽  
Hot Forming ◽  
Al Alloy ◽  
Forming Process ◽  
Process Step ◽  
6016 Aluminum Alloy

In order to improve formability of high strength Al-alloy sheet metal, in this paper, it come up with the synchronized cooling hot forming process. Taking the aluminum alloy of 6016 H18 aluminum alloy, which carried out its technology test by Gleeble3500 hot-mechanical simulator. The process parameters such as deformation temperature T, holding time t and cooling rate v is investigated by the orthogonal test and the microstructure is analyzed simultaneously. The results show that the synchronized cooling hot forming process can be applied to 6016 H18 aluminum alloy, it both improves the formability of 6016 H18 aluminum alloy significantly and obtains the high strength after forming, it can meet the purpose of implementing deformation and enhanced in one process step, the proper combination of process parameters are T=450 °C, t=210 s, v=60 °C/s. Strengthening mechanism is which there is a large number of strengthening phase precipitated from matrix in technology process, the strengthening phases are coarser and the dispersed uniformity is a bit worse compared with that of T4 state.

scholarly journals The influence of process parameters and sheet material on the temperature development in the forming zone

2019 ◽  
Vol 6 ◽  
pp. 9
Author(s):  
Philipp Tröber ◽  
Markus Welm ◽  
Hannes Alois Weiss ◽  
Peter Demmel ◽  
Roland Golle ◽  
...  
Keyword(s):  
Tool Wear ◽  
Process Parameters ◽  
Frictional Heating ◽  
Sheet Material ◽  
Forming Process ◽  
Influence Of Process Parameters ◽  
Part Quality ◽  
Wide Range ◽  
Cold Metal ◽  
Quality Process

Cold metal forming is a fast and economical way of producing a wide range of precise components. Its profitability mainly depends on part quality, process stability, and service intervals of tools. As these factors are all determined by tool wear, detailed process knowledge is indispensable to maximize profitability by minimizing wear. One of the most crucial factors in this context is temperature. During every forming process, a temperature rise occurs between tool and workpiece due to frictional heating and a large part of plastic work dissipating into heat. This phenomenon affects the whole forming process but especially tool wear. Currently, there is little solid information about temperatures occurring during forming operations. Therefore, the temperature was measured based on varying process parameters, sheet materials, and thicknesses in several embossing and blanking examinations. The use of a tool–workpiece thermocouple enabled accurate and instantaneous measurement during the process. The results presented show the strong influence of process and material parameters on temperatures in the forming zone.

Microstructure Evolution and Control of 30Cr2Ni4MoV Steel During Hot Forming

2011 ◽  
Vol 317-319 ◽  
pp. 170-173 ◽  
Author(s):  
Xiao Xun Zhang ◽  
Yun Hua Sun ◽  
Ye Ling Zhu
Keyword(s):  
Grain Size ◽  
Strain Rate ◽  
Process Parameters ◽  
Microstructure Evolution ◽  
Hot Forming ◽  
Forming Process ◽  
Industry Practice ◽  
Prediction And Control ◽  
3D Software ◽  
And Control

Prediction and control of the microstructure to improve product performance are very important for the industry practice. In this study, microstructure evolutions of 30Cr2Ni4MoV steel under different conditions were simulated by changing the process parameters using the Deform 3D software. Effects of the forming process parameters on the microstructure were revealed: (1) the higher the temperature and the lower the strain rate, the smaller the strain are needed for the dynamic recrystallization; (2) when strain is enough, the higher the strain rate, the easier the uniform and small grain size can be obtained; (3) under a certain strain rate, the grain size increases as the deformation temperature increases. The microstructure of metal can be predicted and controlled according to the effects of hot forming process parameters on the microstructure evolution.

scholarly journals Study on the Influence Law of Forming Quality of Clinched Joint for Dissimilar Metal Sheet

2021 ◽  
Author(s):  
Qihan Li ◽  
Chuanwei Xu ◽  
Song Gao ◽  
Xiaoheng Han ◽  
Fenglei Ma ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Shear Strength ◽  
Process Parameters ◽  
Structural Parameters ◽  
Vehicle Body ◽  
Selection Strategy ◽  
Forming Process ◽  
Influence Of Process Parameters ◽  
Forming Quality

Abstract The clinched process of heterogeneous materials is more and more used in automobile, aerospace, and household appliances manufacturing. Traditional spot welding is easy to produce heat influence and damage material itself, which restricts the application and development for the hybrid structure of the vehicle body. This paper is based on the test of clinching. The cross-section morphology of clinched joints is observed. Based on the tensile test data and the requirements of the test die, the finite element model of the steel-aluminum clinched joint forming is established. The model is proved to be effective in the process of clinched forming. Based on the simulation model, the influence of process parameters (forming process parameters, Punch’s geometry parameters, and concave die structural parameters) on the forming quality of steel- aluminum clinched joint is analyzed. The evaluation of the joint after forming includes the critical dimension, deformation, and neck-lock ratio. Then, the strength of the steel-aluminum clinched joint was studied by tensile shear test. The law of strength change and the neck-lock ratio is analyzed. The selection strategy of different process parameters is studied. The results show that the forming process of the joint is predicted by numerical simulation, and the quality of the joint is sound. The neck-lock ratio of the joint with the highest tensile and shear strength is less than one and close to 1, that is, the joint with forming force of 40kN. The tensile strength and shear strength of clinched joint are higher than the design index (shear strength is 1700N, tensile strength is 700N). The tensile strength was increased by 125%, and the shear strength was 62.35%.

Research about Warm-Hot Forming Process Control of LTWB Auto B-Pillar

2012 ◽  
Vol 472-475 ◽  
pp. 3078-3082
Author(s):  
Yu Qin Guo ◽  
Xin Yang ◽  
Juan Juan Han ◽  
Wei Chen ◽  
Meng Zhao
Keyword(s):  
Process Control ◽  
Process Parameters ◽  
Industrial Production ◽  
Weld Line ◽  
Compensation Method ◽  
Hot Forming ◽  
Blank Holder Force ◽  
Forming Process ◽  
Blank Holder ◽  
The Times

In recent years, with the trend of auto body lightweight, more and more auto manufacturers pay attention to warm-hot forming of laser tailor weld blank (LTWB). In this article, choosing Audi Q5 B-pillar as the study object provided by Benchmark 2008 and using the stamping specific software Autoform, the effects of blank holder force (BHF) and drawbead on the formability of B-pillar are studied in different forming tempreture and put forward the reverse compensation method to control the weld line offset and the reverse compensation quantity is quantized, which has great significance to direct the industrial production, determine the process parameters of warm-hot forming and reduce the times of trying dies.

scholarly journals Springback Analysis of Flexible Stretch Bending of Multi-Point Roller Dies Process for Y-Profile under Different Process Parameters

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 646
Author(s):  
Chuandong Chen ◽  
Jicai Liang ◽  
Yi Li ◽  
Ce Liang ◽  
Wenming Jin
Keyword(s):  
Numerical Simulation ◽  
Process Parameters ◽  
Large Scale ◽  
Elastic Recovery ◽  
Scale Production ◽  
Forming Process ◽  
Influence Of Process Parameters ◽  
Zone Length ◽  
Plastic Forming ◽  
Bending Radius

Springback is a common defect caused by elastic recovery in the plastic forming process, which can cause the formed workpiece to deviate from the target shape. The purpose of this paper is to grasp the influence law of process parameters on springback deviation so as to optimize process parameters to reduce springback. Taking the Y-profile as the research object, the influence of process parameters such as horizontal bending radius, vertical bending radius, transition zone length, radius of roller dies, and wall thickness of the profile on springback deviation is discussed by numerical simulation. Additionally, the validity of the numerical simulation is verified through experiments. The springback law obtained by numerical simulation is applied to practical production, and the large-scale production of the Y-profile is realized.

Shaping Parameter Control of High-Speed Cold Roll-Beating Based on Simulation and Regression Analysis

2011 ◽  
Vol 109 ◽  
pp. 517-522
Author(s):  
Ming Shun Yang ◽  
Yan Li ◽  
Qi Long Yuan ◽  
Jian Ming Zheng
Keyword(s):  
Process Parameters ◽  
High Speed ◽  
Groove Depth ◽  
Forming Process ◽  
Influence Of Process Parameters ◽  
Lead Screw ◽  
Cold Roll ◽  
Plastic Forming ◽  
Near Net Shaping ◽  
Net Shaping

High-speed cold roll-beating is a near-net shaping technology in which with the characteristic of metal plastic forming used, revolving roller with high speed is applied to roll and beat the blank shaft, then force mental to flow and form a component profile. In the forming process, matching between the process parameters and the part profile is key to implement and apply the technology. In this paper, the FEM model of the lead screw cold roll-beating forming is built, the ABAQUS software is used to simulate the forming process. Based on the simulation results, the orthogonal test is designed, influence of process parameters on groove depth and bulging height of cold roll-beating process are studied; multivariate regression models of maximum bulging height and groove depth relative to the process parameters are established, and the effectiveness of the models are verified, which is of important guiding significances for forming accurate profile of lead screw by controlling process parameters.

scholarly journals The influence of process parameters on the temperature development in the forming zone

2018 ◽  
Vol 190 ◽  
pp. 14004 ◽  
Author(s):  
Philipp Tröber ◽  
Markus Welm ◽  
Hannes Alois Weiss ◽  
Peter Demmel ◽  
Roland Golle ◽  
...  
Keyword(s):  
Tool Wear ◽  
Process Parameters ◽  
Frictional Heating ◽  
Forming Process ◽  
Influence Of Process Parameters ◽  
Part Quality ◽  
Wide Range ◽  
Temperature Development ◽  
Cold Metal ◽  
Quality Process

Cold metal forming is a fast and economical way of producing a wide range of precise components. Its profitability mainly depends on part quality, process stability and service intervals of tools. As these factors are all determined by tool wear, detailed process knowledge is indispensable to maximize profitability by minimizing wear. One of the most crucial factors in this context is temperature. During every forming process, a temperature rise occurs between tool and workpiece due to frictional heating and a large part of plastic work dissipating into heat. This temperature affects the whole forming process but especially tool wear. Currently, there is little solid information about temperatures occurring during forming operations. Therefore, the temperature was measured based on varying process parameters in several embossing and blanking examinations. The use of a tool-workpiece-thermocouple enabled accurate and instantaneous measurement during the process. The results presented show the strong influence of process parameters on temperatures in the forming zone.

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