The Temperature Field Test and Numerical Simulation of Steel’s Friction Stir Welding Process

2013 ◽  
Vol 706-708 ◽  
pp. 370-374 ◽  
Author(s):  
Xi Jing Wang ◽  
Yong Xin Lu ◽  
Zhong Ke Zhang ◽  
Jian Li Liang ◽  
Ting Kai Guo
Keyword(s):  
Temperature Field ◽  
Friction Stir Welding ◽  
Heat Input ◽  
Low Carbon Steel ◽  
Welding Process ◽  
Transient Temperature ◽  
Low Carbon ◽  
Element Analysis ◽  
Friction Stir ◽  
Friction Stir Welding Process

For the friction stir welding technology of the low carbon steel, according to the character of the friction stir welding process, the researchers build a simplified heat input numerical model, and use the finite element analysis software ANSYS to simulate the transient temperature field distribution and the feature points of thermal cycle curve of the 4 mm Q235A steel in the butt joint. Comparing the simulation results and the feature point temperature curve measured by the thermocouple, the researchers verify the heat input model and simulation method is correct. It provides the scientific basis to select the right experimental parameters.

Simulation on Temperature Field of Friction Stir Welding of 2A14 Aluminum Alloy Based on Equivalent Film Method

2016 ◽  
Vol 723 ◽  
pp. 62-67
Author(s):  
Zhi Zhu ◽  
Min Wang ◽  
Hui Jie Zhang ◽  
Xiao Zhang ◽  
Tao Yu ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Temperature Field ◽  
Friction Stir Welding ◽  
Heat Conduction Problem ◽  
Fluid Dynamic ◽  
Welding Process ◽  
Friction Stir ◽  
Friction Stir Welding Process ◽  
Backing Plate ◽  
Film Method

Backing plate has an important influence on the temperature field of workpiece during the friction stir welding process. In order to predict the temperature field of workpiece accurately, a thermal-fluid coupled friction stir welding calculation model including workpiece and backing plate was developed. In the model, an equivalent film method was proposed to simplify the contact heat transfer between workpiece and backing plate to a heat conduction problem. The computational fluid dynamic software FLUENT was ultilized to simulate the friction stir welding process of 2A14 aluminum alloy. As a result, the steady-state temperature field during the friction stir welding process was predicted and analyzed. The welding process test was carried out to verify the simulation results of temperature field. The compared results show that the simulated temperature and the measured values of all measuring points are in good agreement. Using the simulation method proposed in this paper, the calculation accuracy of temperature field during the friction stir welding process could be relatively high and the maximum error is 4.61%. In addition, there is a good corresponding relationship between the temperature distribution and the various regions of weld cross section.

Joining of Q235 Low-Carbon Steel Plates by Friction Stir Welding With AA2A12 Strip As an Auxiliary Solder

2019 ◽  
Author(s):  
Peng Zhang ◽  
Shengdun Zhao ◽  
Peng Dong ◽  
Yongfei Wang ◽  
Chao Chen ◽  
...  
Keyword(s):  
Friction Stir Welding ◽  
Melting Point ◽  
Welded Joint ◽  
Low Carbon Steel ◽  
Welding Process ◽  
Steel Plates ◽  
Low Carbon ◽  
Micro Hardness ◽  
High Melting Point ◽  
Friction Stir

Abstract This article proposed a novel friction stir welding process to weld high melting point alloy plates with low melting point alloy strip as auxiliary solder to reduce the wear of the friction stir welding tool and extend its service life, and feasibility of this process was evaluated. An AA2A12 strip was clamped to the gap between two Q235 low-carbon steel plates as an auxiliary solder before welding, then a joint with excellent surface quality and smooth weld edge transition was obtained by friction stir welding process in which the tool was made of low-cost material tungsten-carbide. Macrostructure, microstructure and fracture surface of the joints were investigated by optical microscope and scanning electron microscope. The tensile tests were conducted to evaluate the mechanical properties of the joint at rotational speed of 800 r/min, traverse speed of 50 mm/min, with plunge depth and probe offset of 0.1 mm. The tensile strength of the joint was 108.9 MPa at room temperature what proved the feasibility of the novel way we proposed. The micro-hardness value of the cross section of the welded joint is M-shaped from the AS to the RS, and gradually decrease from the top plane to the bottom plane. There is a certain relationship between the welding process parameters and the macroscopic morphology, micro-hardness and mechanical properties of the welded joint. Hence, the method we proposed has high innovation, and economy, high value of scientific research and industrial application, and provides a new idea about friction stir welding of high melting point alloys.

Thermo-Mechanical Modelling of Friction Stir Welding Process

2013 ◽  
Vol 774-776 ◽  
pp. 1155-1159 ◽  
Author(s):  
Xiao Cong He
Keyword(s):  
Finite Element Analysis ◽  
Friction Stir Welding ◽  
Mechanical Behaviour ◽  
Material Flow ◽  
Welding Process ◽  
Element Analysis ◽  
Friction Stir ◽  
Mechanical Modelling ◽  
Major Factors ◽  
Realistic Prediction

Friction stir welding (FSW) is a solid-state welding process where no gross melting of the material being welded takes place. Numerical modelling of the FSW process can provide realistic prediction of the thermo-mechanical behaviour of the process. Latest literature relating to finite element analysis (FEA) of thermo-mechanical behaviour of FSW process is reviewed in this paper. The recent development in thermo-mechanical modelling of FSW process is described with particular reference to two major factors that influence the performance of FSW joints: material flow and temperature distribution. The main thermo-mechanical modelling used in FSW process are discussed and illustrated with brief case studies from the literature.

Application of Self-Made Dynamometer in Measuring Tool Forces in Friction Stir Welding Process

2016 ◽  
Vol 693 ◽  
pp. 1339-1345
Author(s):  
Hong Feng Wang ◽  
J.L. Wang ◽  
W.W. Song ◽  
Dun Wen Zuo ◽  
Q.Q. Zhu
Keyword(s):  
Friction Stir Welding ◽  
Design Principle ◽  
Welding Process ◽  
Cross Sensitivity ◽  
Friction Stir ◽  
Friction Stir Welding Process ◽  
Measuring Tool ◽  
Ring Deformation

In this paper, the dynamometer for measuring the forces of the tool in FSW process was designed. The design principle of the dynamometer was adopted octagonal ring deformation to get the forces in FSW process. The design dynamometer was calibrated, the result showed the linearity and cross sensitivity of the dynamometer in allowed range, the worked reliable of the dynamometer was good. It can be used to measure the forces in FSW process.

A novel non-keyhole friction stir welding process

2022 ◽  
Vol 73 ◽  
pp. 17-25
Author(s):  
Peng Gong ◽  
Yingying Zuo ◽  
Shude Ji ◽  
Dejun Yan ◽  
Zhen Shang
Keyword(s):  
Friction Stir Welding ◽  
Welding Process ◽  
Friction Stir ◽  
Friction Stir Welding Process
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