scholarly journals Prediction of temperature field and residual stress of oscillation laser welding of 316LN stainless steel

2022 ◽  
Vol 145 ◽  
pp. 107493
Author(s):  
Shenghong Yan ◽  
Zheng Meng ◽  
Bo Chen ◽  
Caiwang Tan ◽  
Xiaoguo Song ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Temperature Field ◽  
Laser Welding ◽  
316Ln Stainless Steel

Temperature Field and Residual Stress Analysis of the Gear on CO2 Laser Welding Process

2011 ◽  
Vol 86 ◽  
pp. 670-673
Author(s):  
Jian Luo ◽  
Fei Li ◽  
Ke Liang Xue ◽  
De Jia Liu ◽  
Hai Wei Zhang
Keyword(s):  
Residual Stress ◽  
Temperature Field ◽  
Laser Welding ◽  
Welding Process ◽  
Welding Residual Stress ◽  
Temperature Cycle ◽  
Residual Tensile Stress ◽  
Welding Seam ◽  
Welding Temperature ◽  
Laser Welding Process

The welding technique is one of important technologies on the gear manufacturing process. The special welding temperature cycle is the basic conditions of the welding residual stress appearance in the gear. The large welding residual stress will create the large deformation after the gear welding, which will affect the gear service behavior. In this paper, the finite element method has used to simulate the gear laser welding process. The temperature field and residual stress has described. The research results show that the biggest residual compressive stress appears on the transverse direction of welding region. In the longitudinal direction, the biggest residual tensile stress appears on both sides of the welding seam line. When the laser welding power is 2.4 kW and welding speed is 20mm/s, the no apparent welding deformation’s 20CrMnSi gear can be achieved really.

Autogenous Laser Welding of 20-mm-Thick 316LN Stainless Steel Plate by Ultra High Power Fiber Lasers

2018 ◽  
Vol 45 (5) ◽  
pp. 0502007
Author(s):  
信纪军 Xin Jijun ◽  
方超 Fang Chao ◽  
宋云涛 Song Yuntao ◽  
卫靖 Wei Jing ◽  
吴杰峰 Wu Jiefeng ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Welding ◽  
High Power ◽  
Fiber Lasers ◽  
Steel Plate ◽  
Stainless Steel Plate ◽  
316Ln Stainless Steel

Numerical Simulation of Temperature Field and Stress Field of Electron Beam Brazing Stainless Steel Radiator

2008 ◽  
Vol 575-578 ◽  
pp. 649-653
Author(s):  
Jun Min Li ◽  
Fu Rong Chen
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Temperature Field ◽  
Electron Beam ◽  
Stress Concentration ◽  
Stress Field ◽  
Tensile Stress ◽  
Temperature Difference ◽  
Heating Process ◽  
Peak Value

Aiming at the radiator with tube-to-plate structure applied usually in aeroplane, a two-dimensional model for finite element analysis was established in this work. By ANSYS software, the temperature field and stress field of electron beam brazing (EBB) 1Cr18Ni9Ti stainless steel radiator by two kinds of process were numerically simulated. The calculated results of temperature field show, by the stage-by-stage heating process, the uniform temperature distribution of radiator faying face was obtained. The temperature of most regions is between 1042~1051°C, which is in the range of brazing temperature. The calculation results of stress field indicate, for radial residual stress, the obvious stress concentration region was found in faying face by direct-heating process; while there was no stress concentration in faying face by stage-by-stage heating process. For circumferential residual stress, compared the stage-by-stage heating process with direct-heating process, the peak value of tensile stress reduces by 11.2%. Compared circumferential residual stress with radial residual stress by two kinds of brazing process, the peak value of circumferential tensile stress is higher than radial tensile stress. So the dangerous position of faying face is along circle direction, namely, the heating direction of scanning electron beam. Consequently, the temperature difference between different positions in faying face must be controlled well during heating. The reduction of temperature difference can fall the peak value of tensile stress and improve the distribution of residual stress.

Temperature Field Numerical Simulation of Laser Welding Joint of Stainless Steel Automobile Vent Pipe

2010 ◽  
Vol 154-155 ◽  
pp. 457-460
Author(s):  
Li Jun Liu ◽  
Tie Nan Di ◽  
Rong Hua Zhu
Keyword(s):  
Stainless Steel ◽  
Temperature Field ◽  
Laser Welding ◽  
Source Model ◽  
Welding Parameters ◽  
Affecting Factors ◽  
Welding Stress ◽  
Cold Forming ◽  
Welding Joint ◽  
The Impact

Ferrite stainless steel has been widely used in foreign automobile vent pipe. During the production of domestic automobile vent pipe, because the crystal grains of welding Joint heat-affected zone are not refined by heat treatment and become very big, forming properties of cold machining of ferrite stainless steel become bad. In order to optimize welding technology, the temperature field of laser welding joint of stainless steel automobile vent pipe is simulated. The temperature field model of laser welding joint of 409 L stainless steel pipe is built based on the pair heat source model. At the same time, the affecting factors are considered, such as thermal radiation, phase change latent heat, thermophysical properties of materials with temperature changes and the spread of convective heat in the liquid metal in the model. The temperature field in different welding parameters are simulated. The impact of process parameters on the temperature distribution is acquired. The experimental results can help works, such as accurately understanding laser welding thermal process, predictive control of welding stress and deformation, and improving cold forming quality of automobile vent pipe.

Residual stress and simulation of 304–430 stainless steel dissimilar laser-welded joints incorporating materials heterogeneity

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Xilong Zhao ◽  
Feng He ◽  
Kun Wang
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Stainless Steel ◽  
Laser Welding ◽  
Finite Element Model ◽  
Welded Joints ◽  
Steel Plate ◽  
Element Model ◽  
Stainless Steel Plate ◽  
Welding Temperature

Abstract An Nd:YAG laser device is used to conduct laser welding for a 1 mm austenitic stainless steel plate and a ferritic stainless steel plate. A finite element model of the shear punching test is constructed to generate the maximum shear strength in the weld, and the finite element model of laser welding is created using the welding temperature field. The hole drilling test result and the residual stress generated by two algorithms (Nonuniform-material and uniform-material) are compared. Results show that a drop-off of residual stress in the central area of the welded joint is observed when materials heterogeneity is disregarded. When materials heterogeneity is considered, the residual stress curve indicates smooth transition. The value of the latter appears reasonably similar to the experimental value. Therefore, this solution is advantageous in terms of residual stress simulation in dissimilar welded joints and does not critically affect residual deformation.

Sign in / Sign up

Export Citation Format

Share Document