scholarly journals Critical Assessment of the Electric Effect in Electric Arc Welding

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1917
Author(s):  
Rongshan Qin
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Arc Welding ◽  
Electric Arc ◽  
Critical Assessment ◽  
Heating Effect ◽  
Current Densities ◽  
Electric Arc Welding ◽  
Electric Effect ◽  
Electric Effects

This work provides a critical assessment of electric effects on the microstructure evolution at the heat-affected zone in electric arc welding. Electric effects are the interactions between electromagnetic fields and materials’ microstructures. They differ from the arc effect and the Joule heating effect by providing an alternative contribution to nucleation, grain growth, recrystallisation and tempering. The influence of the electric effect on grain size, defects, anisotropic properties, precipitates and residual stress has been examined kinetically and thermodynamically. The use of adaptable electric current densities, pulse durations, pulse frequencies and electrode movements is suggested to achieve desirable microstructures and mechanical properties for the weldments.

scholarly journals Experimental Analysis of Welded Rods with a Functionally Graded Material Approach

2020 ◽  
Vol 10 (11) ◽  
pp. 3908 ◽  
Author(s):  
Ayse Basmaci ◽  
Seckin Filiz ◽  
Mümin Şahin
Keyword(s):  
Mechanical Properties ◽  
Functionally Graded Material ◽  
Material Properties ◽  
Friction Welding ◽  
Arc Welding ◽  
Tensile Tests ◽  
Electric Arc ◽  
Functionally Graded ◽  
Graded Material ◽  
Electric Arc Welding

In recent years, with the development of welding methods, using these methods in manufacturing industry and in advanced engineering has become more popular. In this study, mechanical properties of rods obtained by friction welding and electric arc welding are compared. Hence, three specimens with different material properties are manufactured, two of which are welded by friction welding and one of which is welded by electric arc welding. These three specimens are adapted to the ASTM E8-04 standard with the help of a universal lathe. Moreover, the tensile stress values and the elasticity modulus of all these specimens are obtained as a result of tensile tests. Accordingly, the effects of the type of welding and material properties used in manufacturing on the mechanical behavior of the specimens are examined. In addition, specimens taken from the cracked surfaces of the pieces broken from the specimens as a result of the tensile test are examined with SEM (scanning electron microscopy). These examinations reveal the microstructure of the specimens. The elemental distribution data obtained as a result of examinations with SEM and the mechanical property data obtained as a result of tensile tests support each other. Furthermore, effects of a heat affected zone (HAZ) on the mechanical properties of the rod are investigated as a functionally graded material.

Properties Effect of 16MnR Steel Weld Joint by Different Welding Methods

2013 ◽  
Vol 690-693 ◽  
pp. 2639-2642
Author(s):  
Lin Guo ◽  
Tian Hui Zhang ◽  
Ren Ping Xu ◽  
Hui He
Keyword(s):  
Mechanical Properties ◽  
Weld Joint ◽  
Arc Welding ◽  
Submerged Arc Welding ◽  
Electric Arc ◽  
Solid Core ◽  
Steel Weld ◽  
Steel Weld Joint ◽  
Electric Arc Welding ◽  
Submerged Arc

Welding experiments were made with δ=14mm, 16MnR steel by three welding methods, manual electric arc welding, automatic submerged arc welding and semi-auto solid-core CO2 shielded arc welding, and weld joint test with samples from every welding specimen. The properties of welding joint were analyzed by three welding methods and in every position of welding, concluded that brittlement problems in heat affected zone arise from the CO2 shielded arc welding, it is because of the heat damage of alloy elements of weld joint metal while using CO2 shielded arc welding, but the strength of the weld joint is high because of its high fusion ratio. So for improving the mechanical properties of weld joints.it had better accelerate the cooling rate of weld bead and decrease the heat input of welding.

Electric arc welding and surfacing in repair of rails of Kyiv underground

2018 ◽  
Vol 2018 (2) ◽  
pp. 30-33
Author(s):  
G.V. Kuzmenko ◽  
◽  
V.M. Taganovsky ◽  
V.L. Sidorenko ◽  
◽  
...  
Keyword(s):  
Arc Welding ◽  
Electric Arc ◽  
Electric Arc Welding

Data Mining for ERW Welded Tube Scheduling Rules Based on Decision Tree

2011 ◽  
Vol 403-408 ◽  
pp. 1804-1807
Author(s):  
Ning Zhao ◽  
Shao Hua Dong ◽  
Qing Tian
Keyword(s):  
Data Mining ◽  
Decision Tree ◽  
Arc Welding ◽  
Data Cleaning ◽  
Data Extraction ◽  
Electric Arc ◽  
Welded Tube ◽  
Electric Arc Welding ◽  
Decision Tree Method ◽  
Tree Method

In order to optimize electric- arc welding （ERW） welded tube scheduling , the paper introduces data cleaning, data extraction and transformation in detail and defines the datasets of sample attribute, which is based on analysis of production process of ERW welded tube. Furthermore, Decision-Tree method is adopted to achieve data mining and summarize scheduling rules which are validated by an example.

THE CONCEPT OF MODERN METAL STRUCTURE PRODUCTION BY ELECTRIC ARC WELDING METHODS

Vestnik LSTU ◽  
2020 ◽  
pp. 74-81
Author(s):  
A.S. Babkin ◽  
Y. Chang ◽  
I.A. Babkin ◽  
B. Lee
Keyword(s):  
Arc Welding ◽  
Metal Structure ◽  
Electric Arc ◽  
Electric Arc Welding

Guidance and stabilisation of electric arc welding using Nd:YAG laser radiation

2008 ◽  
Author(s):  
Jörg Hermsdorf ◽  
Andreas Ostendorf ◽  
Christian Stahlhut ◽  
Alexander Barroi ◽  
Frank Otte ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Nd:Yag Laser ◽  
Arc Welding ◽  
Electric Arc ◽  
Electric Arc Welding
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