Magnetic Properties of Materials Used in Electric Arc Welding and Surfacing

2018 ◽  
Vol 938 ◽  
pp. 33-40
Author(s):  
Alexander D. Razmyshlyaev ◽  
Marina V. Ahieieva ◽  
Elena V. Lavrova
Keyword(s):  
Magnetic Properties ◽  
Magnetic Fields ◽  
Arc Welding ◽  
Primary Circuit ◽  
Secondary Circuit ◽  
Electrode Wire ◽  
Electric Arc Welding ◽  
Materials Used ◽  
Submerged Arc ◽  
Welding Materials

It was experimentally established earlier that the increment of the electrode wire melting coefficient at submerged arc welding and surfacing with magnetic fields action (with equal parameters of the welding mode) depends on the chemical composition of the wires. It is suggested that this effect depends on the magnetic properties of the welding materials, i.e. electrode wire and base metal. To measure the magnetic properties of welding materials, a method has been developed in which the magnetic properties of welding materials on samples are investigated. The samples were made in the form of tori, on which the primary and secondary windings were placed. The primary circuit contains an ammeter and a voltmeter, as well as a wattmeter that allows to take into account losses in the sample on hysteresis and Foucault currents, and the secondary circuit contains a voltmeter. Experimental data on the magnetic properties of some welding and surfacing wires, as well as of base metals, are obtained. A simplified method is proposed, in which torus samples are also used, but on which only one winding is placed, over which a direct current is flowed. The value of the increment of the electrode wire melting coefficient at arc welding with the action of magnetic fields increases with increasing their magnetic permeability.

Study on the Microstructure and Mechanical Properties of 15CrMoR

2012 ◽  
Vol 472-475 ◽  
pp. 2731-2735
Author(s):  
Xiao Dong Hu ◽  
Qing Kun He ◽  
Jian Tao Lv ◽  
Yong Zhang
Keyword(s):  
Mechanical Properties ◽  
Arc Welding ◽  
Weld Zone ◽  
Submerged Arc Welding ◽  
Butt Weld ◽  
Heat Treated ◽  
Electric Arc Welding ◽  
The Relationship ◽  
Submerged Arc ◽  
Better Than

The butt weld sample with the material of 15CrMoR has been manufactured with the bonding methods of manual electric arc welding (SMAW) and submerged-arc welding (SAW). The relationship between the microstructure and the mechanical properties has been analyzed in this paper, and the conclusions have been obtained as followed: only the last weld layer has the obvious zones of weld zone, heat-affected zone (HAZ) and fusion area for the multi-layer butt weld, the weld zone and the fusion area will be heat-treated by the next layer welding; the hardness along central intersection shows a W-shaped distribution, and the zone with normalizing organization has the lowest hardness and the surface layer has the highest hardness; the mechanical properties of the multi-layer butt weld are much better than the monolayer weld’s.

SUBMERGED ARC WELDING TECHNOLOGY

2021 ◽  
Author(s):  
Кирилл Витальевич Буров ◽  
Анастасия Вячеславовна Полякова
Keyword(s):  
Welded Joints ◽  
Arc Welding ◽  
Submerged Arc Welding ◽  
Electric Arc ◽  
Welding Technology ◽  
Electric Arc Welding ◽  
And Performance ◽  
The Impact ◽  
Submerged Arc

В данной статье раскрываются особенности применения флюса в технологии электродуговой сварки и влияние на характеристики и работоспособность сварных соединений. This article describes the features of the use of flux in the technology of electric arc welding and the impact on the characteristics and performance of welded joints.

Dilution Control by Advanced Submerged Arc Welding

2012 ◽  
Vol 488-489 ◽  
pp. 1737-1741 ◽  
Author(s):  
Dinesh Kumar Shukla ◽  
Sunil Pandey
Keyword(s):  
Arc Welding ◽  
Raw Materials ◽  
Steel Substrate ◽  
Welding Process ◽  
Welding Current ◽  
Submerged Arc Welding ◽  
Electrode Wire ◽  
The Difference ◽  
Process Controls ◽  
Submerged Arc

Dilution is a vital element in surfacing and depends on the difference in chemical composition between the weld and the parent metal, the welding process and the technique used. Metal surfacing is becoming the natural choice for reducing the consumption of expensive raw materials, processing cost and proper resource utilization. Mechanical as well as the metallurgical properties are greatly influenced by the degree of dilution. The advanced submerged arc welding (ASAW) process controls the response parameters independently and breaks the fixed relationship between the wire feed rate (W) and the welding current (I). A study was conducted to investigate the effect of process variables on the dilution during the process. The preheating of the electrode wire used in Submerged Arc Welding process (SAW) for surfacing application was done with the modification in the existing setup. Stainless steel 308L electrode wire was used on mild steel substrate to study the effect of preheating on the dilution. The results show that ASAW process controls and significantly reduces the percent dilution as compared with the conventional SAW process. ASAW process reduces the heat input, use of consumables and increased productivity, is the added advantages over the conventional process.

Study on the Weldability and Metallurgical Structure of 15CrMoR

2012 ◽  
Vol 562-564 ◽  
pp. 583-586
Author(s):  
Xiao Dong Hu ◽  
Jian Tao Lv ◽  
Yong Zhang ◽  
Sen Zhang ◽  
Ya Jiang Li
Keyword(s):  
Arc Welding ◽  
Weld Zone ◽  
Submerged Arc Welding ◽  
Electric Arc ◽  
Butt Weld ◽  
Heat Treated ◽  
Metallurgical Structure ◽  
Electric Arc Welding ◽  
Submerged Arc ◽  
Better Than

The butt weld of 15CrMoR with the thickness of 55mm has been manufactured with the bonding methods of manual electric arc welding (SMAW) and submerged-arc welding (SAW), and the mechanical properties of which have been tested with the corresponding test, and the metallurgical structures have been analyzed with microscope. Conclusions have been obtained as following: the metallurgical structure of multi-layer butt weld is much more complicated than the monolayer ones; only the last weld layer has the obvious zones of weld zone, heat-affected zone (HAZ) and fusion area; the weld zone and the fusion area will be heat treated with the next layers weld finished; the mechanical property of the multi-layer butt weld is much better than the monolayer weld.

Some design features of sliding current leads

2020 ◽  
pp. 154-159
Author(s):  
Aleksey V. Buryakin ◽  
Nikita S. Nesterenko ◽  
Pavel A. Tsirkov
Keyword(s):  
Arc Welding ◽  
Strength Properties ◽  
Research Purpose ◽  
Radius Of Curvature ◽  
Plastic Bending ◽  
Electrode Wire ◽  
Feed Force ◽  
Supply Channel ◽  
The Wire ◽  
Electric Arc Welding

Plastic bending of the electrode wire causes an increase in the required force of its supply to the current supply. This can lead to uneven feed and instability of welding, surfacing and spraying processes. (Research purpose) The research purpose is in considering the behavior of the supplied electrode wire in the current supply and suggest ways of reducing the force of its pushing. (Materials and methods) In order to reduce the force of feeding the wire to the current supply, its bend must be elastic. If the wire must be deformed plastically, it must be bent before entering the current supply and the bend of the current supply channel must correspond to the curvature of the wire. The article presents calculations of the radius of curvature of the wire to assess the behavior of the wire when it bends, at which it begins to deform plastically. (Results and discussion) The article presents results for the bending radii of wires made of various materials, at which they begin to deform plastically. Authors selected for calculations the wire materials and their diameters, which are most often used for electric arc welding and sputtering. With an increase in strength properties and a decrease in wire diameters, their bending occurs elastically at a smaller radius. This information and the described behavior of the wire when it is fed into a sliding current supply can be useful for developers in creating metallization and surfacing equipment. (Conclusions) In order to reduce the force of pushing the wire into the current supply channel, it is desirable to deform it elastically when feeding. For the most commonly used materials for arc welding, surfacing and metallization, the values of the bending radii of the wires at which plastic deformation begins are calculated and presented. When plastic bending of the wire is used to reduce the feed force, it must be bent before the entrance to the current supply channel. The bend of the wire must correspond to the radius of the channel.

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