Optimization of MIG Welding Parameters for Improving Strength of Welding Joint for Husquarna- Pulley of Material SAE-1018

2017 ◽  
Vol V (X) ◽  
pp. 896-904
Author(s):  
Sudhir S. kulkarni
Keyword(s):  
Welding Parameters ◽  
Mig Welding ◽  
Welding Joint

Effect of Welding Residual Stress on the Buckling Behavior of Storage Tanks Subjected to Harmonic Settlement

2016 ◽  
Vol 139 (1) ◽  
Author(s):  
Jian-Guo Gong ◽  
Lei Yu ◽  
Feng Wang ◽  
Fu-Zhen Xuan
Keyword(s):  
Residual Stress ◽  
Design Method ◽  
Welding Residual Stress ◽  
Welding Parameters ◽  
Strengthening Effect ◽  
Storage Tanks ◽  
Buckling Strength ◽  
Welding Joint ◽  
Buckling Behavior ◽  
Significant Difference

The effect of welding residual stress on the buckling behavior of storage tanks subjected to the harmonic settlement was simulated using the shell-to-solid coupling method. In the numerical model of tanks coupled with the welding residual stress, the welding joint and its adjacent zone were modeled using the solid submodel and the zone far away from the welding joint was built by the shell submodel. Effects of welding parameters (e.g., welding velocities and welding passes) on the buckling behavior of tanks were analyzed systematically. Results indicate that the buckling strength of tanks is enhanced due to the welding residual stress. Comparatively, a slow welding velocity presents a more remarkable strengthening effect than the fast welding velocity due to a larger axial residual stress produced at the welding joint. Nevertheless, no significant difference between the double-side welding and the one-side welding for buckling strength enhancement is observed for the cases studied. This indicates that the current design method causes a conservative design without considering the welding residual stress.

The effects of welding parameters on ultra-violet light emissions, ozone and Cr formation in MIG welding

1997 ◽  
Vol 41 (1) ◽  
pp. 95-104
Author(s):  
J DENNIS ◽  
S MORTAZAVI ◽  
M FRENCH ◽  
P HEWITT ◽  
C REDDING
Keyword(s):  
Ultra Violet ◽  
Welding Parameters ◽  
Mig Welding ◽  
Ultra Violet Light ◽  
Violet Light

scholarly journals THE EFFECTS OF WELDING PARAMETERS ON ULTRAVIOLET LIGHT EMISSIONS, OZONE AND CrVI FORMATION IN MIG WELDING

1997 ◽  
Vol 41 (1) ◽  
pp. 95-104 ◽  
Author(s):  
J. H. Dennis ◽  
S. B. Mortazavi ◽  
M. J. French ◽  
P. J. Hewitt ◽  
C. R. Redding
Keyword(s):  
Ultraviolet Light ◽  
Welding Parameters ◽  
Mig Welding

Hot Stamping High Strength Steel Spot Welding Technology and Quality Evaluation of Welding Joint

2014 ◽  
Vol 1063 ◽  
pp. 181-185
Author(s):  
Su Feng Hao ◽  
Zhong De Shan ◽  
Shu Jun Chen ◽  
Chao Jiang
Keyword(s):  
High Strength Steel ◽  
Spot Welding ◽  
Quality Evaluation ◽  
Hot Stamping ◽  
High Strength ◽  
Interfacial Fracture ◽  
Welding Parameters ◽  
Local Cooling ◽  
Welding Joint ◽  
Pull Out

The heterogeneity of microstructure and mechanical performance of welding joints were affected by unique material properties such as high resistivity and low thermal conductivity, instantaneous high temperature of spot welding thermal cycle, and uneven local cooling rate. Because of ultra high strength of hot stamping parts, the welding joint is more inclined to fail as the failure mode of interfacial fracture, the traditional critical nugget formula fell down. Through designing orthogonal experiment, the effect of different welding parameters on joint performance was analyzed, the optimized welding process was obtained; on account of the quality evaluation of welding joint, nugget spherical mode was built to separately analyze the stress condition of welding joint in the failure modes of interfacial fracture and nugget pull-out, the new evaluation criterion aimed at high strength steel was established. Two kinds of 1.2 mm and 2.0 mm steels were used to validate the critical weld diameter. Results showed that the critical formula could accurately evaluate failure of the weld joints.

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