Impact of Electrode Wire Feed Ways on Residual Stresses in Welded Joints

2015 ◽  
Vol 752-753 ◽  
pp. 285-290 ◽  
Author(s):  
Artem Kryukov ◽  
Nikolay Pavlov
Keyword(s):  
Residual Stresses ◽  
Welded Joints ◽  
Shielding Gases ◽  
Electrode Wire ◽  
Pulse Feed ◽  
Continuous Feed ◽  
Series Of Experiments ◽  
Wire Feed ◽  
The Way

A series of experiments have been done to evaluate the way an electrode wire feed affects residual stresses in welded joints. It was found that an electrode wire pulse feed combined with shielding gases decreases residual stresses up to two times in comparison with welding with a continuous feed of an electrode wire.

scholarly journals Peculiarities of formation of structure of welded joints in arc surfacing with pulse feed of electrode wire

2016 ◽  
Vol 2016 (3) ◽  
pp. 25-30
Author(s):  
V.A. Lebedev ◽  
◽  
I.V. Lendel ◽  
A.V. Yarovitsyn ◽  
E.I. Los ◽  
...  
Keyword(s):  
Welded Joints ◽  
Electrode Wire ◽  
Pulse Feed

Effect of perturbations in the electrode wire feed system on the quality of welded joints

2002 ◽  
Vol 16 (1) ◽  
pp. 51-55
Author(s):  
SI Poloskov ◽  
Yu S Ishchenko ◽  
V A Lebedev ◽  
OB Getskin
Keyword(s):  
Welded Joints ◽  
Feed System ◽  
Electrode Wire ◽  
Wire Feed

scholarly journals Peculiarities of formation of structure of welded joints in arc surfacing with pulse feed of electrode wire

2016 ◽  
Vol 2016 (3) ◽  
pp. 18-23
Author(s):  
A. Lebedev ◽  
◽  
I.V. Lendel ◽  
A.V. Yarovitsyn ◽  
E.I. Los ◽  
...  
Keyword(s):  
Welded Joints ◽  
Electrode Wire ◽  
Pulse Feed

scholarly journals Mechanized synergic welding with pulsed electrode wire feed

2016 ◽  
Vol 1 (2) ◽  
pp. 19-24 ◽  
Author(s):  
В Лебедев ◽  
V Lebedev
Keyword(s):  
Welding Current ◽  
Automatic Welding ◽  
Electrode Wire ◽  
Pulse Feed ◽  
Synergetic Control ◽  
Wire Feed

A number of problems, related to synergetic control of the process of the arc mechanized and automatic welding with the regulated pulse feed of the electrode wire, are considered. It is noted, that the known systems with a synergetic control due to the impulse algorithms of operation of modern structures sources can be replaced by more simple and less power-intensive systems with the use of the controlled pulse feed of electrode wire. It is determined, that in the systems with the controlled pulse feed of electrode wire the various structures of feed-backs are used on the parameters of an arc process. It is shown, that the required component of feed-back structure in the considered process is a feed-back on the welding current.

Peculiarities of Formation of Residual Stresses in Welded Joints and Stellite Weld Cladding on Rail Steel

2020 ◽  
Vol 11 (3) ◽  
pp. 634-640
Author(s):  
S. Ya. Betsofen ◽  
K. V. Grigorovich ◽  
A. A. Ashmarin ◽  
A. Yu. Abdurashitov ◽  
M. A. Lebedev
Keyword(s):  
Residual Stresses ◽  
Welded Joints ◽  
Rail Steel ◽  
Weld Cladding

Thermoacoustic method for relaxation of residual stresses in welded joints

1995 ◽  
Vol 30 (4) ◽  
pp. 491-493
Author(s):  
V. V. Koshovyi ◽  
M. I. Pekhn'o ◽  
O. I. Tsykhan
Keyword(s):  
Residual Stresses ◽  
Welded Joints

Finite Element Analyses of Residual Stresses in Typical Welded Joints Used in Nuclear Power Plants and Comparisons With Experiments

2010 ◽  
Author(s):  
Dean Deng ◽  
Kazuo Ogawa ◽  
Nobuyoshi Yanagida ◽  
Koichi Saito
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Residual Stresses ◽  
Welded Joints ◽  
Nuclear Power ◽  
Power Plants ◽  
Butt Joint ◽  
Welding Residual Stress ◽  
Dissimilar Metal ◽  
Water Reactors

Recent discoveries of stress corrosion cracking (SCC) at nickel-based metals in pressurized water reactors (PWRs) and boiling water reactors (BWRs) have raised concerns about safety and integrity of plant components. It has been recognized that welding residual stress is an important factor causing the issue of SCC in a weldment. In this study, both numerical simulation technology and experimental method were employed to investigate the characteristics of welding residual stress distribution in several typical welded joints, which are used in nuclear power plants. These joints include a thick plate butt-welded Alloy 600 joint, a dissimilar metal J-groove set-in joint and a dissimilar metal girth-butt joint. First of all, numerical simulation technology was used to predict welding residual stresses in these three joints, and the influence of heat source model on welding residual stress was examined. Meanwhile, the influence of other thermal processes such as cladding, buttering and heat treatment on the final residual stresses in the dissimilar metal girth-butt joint was also clarified. Secondly, we also measured the residual stresses in three corresponding mock-ups. Finally, the comparisons of the simulation results and the measured data have shed light on how to effectively simulate welding residual stress in these typical joints.

A Study of the Influence of Local Heat Treatment on the Structure of Welded Titanium Pipelines

2021 ◽  
Vol 410 ◽  
pp. 37-41
Author(s):  
Natalia A. Astafeva ◽  
Andrey A. Balanovskiy ◽  
Anna A. Pershina
Keyword(s):  
Heat Treatment ◽  
Residual Stresses ◽  
Titanium Alloys ◽  
Welded Joints ◽  
Treatment Method ◽  
Local Heat ◽  
Optical Metallography ◽  
Heat Treated ◽  
Weld Structure ◽  
Heat Treatment Method

The article analyzes the results of a study of the influence of zonal heat treatment on the structure of welded joints of pipeline elements made of titanium alloys Ti-3.5Al-1.5Mn. In the manufacture of such structures, the TIG welding method is used to join pipe elements, after which the heat treatment method can be used to relieve residual stresses. The experiments have confirmed the effectiveness of zonal heat treatment preceded by welding. It was revealed that for welded joints made of titanium alloys, heat treatment can stabilize the structure. In experiments conducted by the method of optical metallography, the structure of heat treated and untreated welded joints was investigated. The influence of heat treatment on the weld structure and heat-affected zone was identified.

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