Development of Vibratory Welding Technique and Tensile Properties Investigation of Shielded Metal Arc Welded Joints

Singh, Pravin Kumar; Patel, D.; Prasad, Somuri V.

doi:10.17485/ijst/2016/v9i35/92846

Cited by 11 publications

(9 citation statements)

References 19 publications

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“…Analysis of the effectiveness of the models for Hardness, Impact strength and Tensile strength responses performed by the help of R 2 (coefficient of determination, R 2 ) values. R 2 (Coefficient of determination) is used to check the goodness of the model; it determines how close the predicted values with the experimental values [36,[41][42][43][44]. When R 2 approaches to the value of 1, implying the response models have closely resembled the actual (experimental) data.…”

Section: R-testmentioning

confidence: 99%

Investigation on the effect of mechanical vibration in mild steel weld pool

Singh

2019

Manufacturing Rev.

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This study presents a new concept of a vibratory welding setup which can transfer the mechanical vibrations in the weld zone during Shielded Metal Arc welding (SMAW) process and can also produce the resonance frequency of 300 Hz. In the present investigation mild steel plates of 6 mm thickness has been butt welded using both conventional and vibratory welding conditions. Microstructure and the mechanical properties of the butt welded joints were evaluated, and the results were compared. Further, in order to optimize the process parameters of vibratory welding technique Taguchi and analysis of variance (ANOVA) technique have been adopted. The responses considered for analysis are hardness, ultimate tensile strength (UTS) and impact strength. The result of the study indicates that by applying the vibratory treatment during welding process the mechanical properties such as hardness, tensile strength and impact strength have been enhanced. Lastly, the obtained results are correlated from the results in the past researches.

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Section: R-testmentioning

confidence: 99%

Investigation on the effect of mechanical vibration in mild steel weld pool

Singh

2019

Manufacturing Rev.

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“…The authors of work [9] executed welding of specimens from mild steel with a vibrator immersed in the weld pool and which transmitted vibrations from the ERM motor to the weld pool with a maximum frequency of 300 Hz and an amplitude of 0.5 mm. specimens welded at this frequency had an increased micro hardness due to the favorable orientation of the crystals and their refinement.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The method of imposing oscillations (vibrations) can be mechanical, i. e. when the weld pool [1][2][3][4][5][6][8][9][10] or the welding tool [2,7] oscillates during the process of welding or surfacing; the use of modulated welding current (pulsed current) [11]; periodic influence of an external magnetic field [12], which in a certain way influences the melt of the weld pool, the welding arc [13] or the laser beam [14].…”

Section: Introductionmentioning

confidence: 99%

Study of a Welding Pool Harmonic Oscillations Influence on the Welded Metal Hardness and Weld Bead Width

Лебедев¹,

Solomiichuk²,

Novykov³

2019

JES

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The comparison results of the hardness measuring of welded metal and the heat-affected zone of the eight welded beads from low-carbon steel obtained by surfacing CO 2 /MAG with welding bath oscillation influence at values of amplitude equaled 0.5 mm (frequency values were 2.5, 3.0, 4.0, and 4.5 Hz) and 4.0 mm (frequency values were 3.7, 3.8, 3.9, and 4.0 Hz) are presented. A technological mode was the same for all specimens. The special influence of amplitude on the hardness value is noted. The structural metal components of the beads with a maximum hardness value are presented. An analytical calculation of the beads width depending on the value amplitude equaled 6 mm and oscillation frequency (values equal 2.5, 3.0, 4.0, and 4.5 Hz) of the weld pool is presented. A comparative analysis of the calculated and experimental values of the beads width is given. The influence of the oscillation frequency on the width value is noted.

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“…In recent years, increased interest among researchers in finding new ways of improving the structure [1,2] and mechanical properties of welded joints or coatings [3] applied by welding methods [4][5][6][7], as well as improving the quality of metal alloys [8,9], can be observed. The issue of improving the micro and macro structural properties can generally be interpreted as improving metallurgical weldability, which has often been a priority [10].…”

Section: Introductionmentioning

confidence: 99%

A Novel Method of Supporting the Laser Welding Process with Mechanical Acoustic Vibrations

et al. 2020

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The research described in this article presents a new contactless method of introducing mechanical vibrations into the base material during CO2 laser welding of low-carbon steel. The experimental procedure boiled down to subjecting a P235GH steel pipe with a 60 mm diameter, 3.2 mm wall thickness and 500 mm length to acoustic signals with a resonant frequency during the welding process. Acoustic vibrations with a frequency of 1385, 110 and 50 Hz were introduced into the pipe along the axis and transversely from the outer surface. The obtained welds were then subjected to structural tests and Vickers hardness measurements. The results of comparative tests show the impact of such introduced vibrations on the granular structure of the welds, as well as on their microhardness in specific areas, such as the face, penetration depth and the heat-affected zone. The effectiveness of the proposed method of introducing vibrations in the scope of grain size and shape as well as changes in the hardness distribution in the obtained welds is demonstrated.

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Development of Vibratory Welding Technique and Tensile Properties Investigation of Shielded Metal Arc Welded Joints

Cited by 11 publications

References 19 publications

Investigation on the effect of mechanical vibration in mild steel weld pool

Investigation on the effect of mechanical vibration in mild steel weld pool

Study of a Welding Pool Harmonic Oscillations Influence on the Welded Metal Hardness and Weld Bead Width

A Novel Method of Supporting the Laser Welding Process with Mechanical Acoustic Vibrations

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