Analysis of Welding Groove Angle and Geometry on Strength of Armor Steel

İpek, Nazli Ezgi; Elaldi, Faruk

doi:10.1080/10426914.2012.709343

Cited by 20 publications

(7 citation statements)

References 11 publications

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“…In the study, it was determined that the welding groove configuration was effective in the tensile strength of the welded samples and the tensile strength nearest to the base metal was obtained in the joint performed with the X2 welding groove configuration. İpek and Elaldi [11] stated that the welding groove geometry and angle were effective on the tensile strength of the high-strength armor steel joined with the GMAW method and they obtained the highest tensile strength in the V-welding groove geometry at the welding angle of 54 o in their study. The fracture occurring in the welded samples as a result of the tensile test was usually associated with the base metal-weld metal transition zone.…”

Section: Methodsmentioning

confidence: 96%

Analysis of welding groove configurations on strength of S275 structural steel welded by FCAW

Çevik¹

2018

Journal of Polytechnic

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Bu makaleye şu şekilde atıfta bulunabilirsiniz(To cite to this article): Çevik B., "Analysis of welding groove configurations on strength of S275 structural steel welded by FCAW", Politeknik Dergisi, 21(2): 489-495, (2018).Erişim linki (To link to this article): http://dergipark.gov.tr/politeknik/archive DOI: 10.2339/politeknik.389642 Politeknik Dergisi, 2018; 21(2) : 489-495 Journal of Polytechnic, 2018; 21(2) : 489-495 ABSTRACTThe quality of welded joints depends on many factors such as welding current, voltage, welding speed, shielding gas type, and welding position. One of these factors is the welding groove design. This is because different stresses (tensile, compression, bending, etc.) can occur on the weldments. For this reason, while designing welded constructions, it is important to join them with the most appropriate welding groove configuration by considering the stresses the welded joints can be exposed to. In this study, the effect of the welding groove configuration on the mechanical and metallurgical properties of S275 structural steel joined by flux cored arc welding (FCAW) method was investigated. For this purpose, different welding groove configurations were formed for structural steel sheets. Tensile, bending, and hardness tests were performed to determine the mechanical properties of the weldments. In addition, metallographic investigations were carried out to determine the metallurgical properties of the weld zones. As a result of the tests, the effect of the welding groove configuration on the mechanical and metallurgical properties of the welded joints was determined. As a result of the microstructure studies, different structures such as grain boundary ferrite, widmanstatten ferrite and acicular ferrite were determined to form in the weld metal and coarse grained zone. It was determined that hardness of the weld metal was higher than HAZ and base metal in all welding groove configurations. As a result of the tensile and bending tests, the highest tensile and bending strengths were obtained from the samples welded by X2 type welding groove configuration after the base metal. Furthermore, the X-type welding groove configurations showed better mechanical properties than the K-type welding groove configurations. Keywords: Flux cored arc welding (FCAW), welding groove, mechanical properties, microstructure. ÖZKaynaklı birleştirmelerin kalitesi, kaynak akımı, voltaj, kaynak hızı, koruyucu gaz türü, kaynak pozisyonu gibi birçok faktöre bağlıdır. Bu faktörlerden birisi de kaynak ağız tasarımıdır. Çünkü kaynaklı çelik konstrüksiyonlar üzerinde farklı gerilmeler (çekme, basma, eğilme v.s) oluşabilmektedir. Dolayısıyla kaynaklı konstrüksiyonlar tasarlanırken, kaynaklı bağlantıların maruz kalabileceği gerilmeler dikkate alınarak en uygun kaynak ağız konfigürasyonu ile birleştirilmesi önem arz etmektedir. Bu çalışmada, özlü tel ark kaynak (ÖTAK) yöntemi ile birleştirilen S275 yapı çeliğinin mekanik ve metalurjik özelliklerine kaynak ağız konfigürasyonunun etkisi araştırılmıştır. Bu amaçla yapı...

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Section: Methodsmentioning

confidence: 96%

Analysis of welding groove configurations on strength of S275 structural steel welded by FCAW

Çevik¹

2018

Journal of Polytechnic

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“…Butt weld joints with single-V, square joint, double-V groove types are frequently adopted when the goal is a smooth surface. V type groove geometry is selected as it provides the best results for mechanical properties [ 29 ]. Tacked and welded samples are shown in Figure 4 a,b.…”

Section: Experimental Designmentioning

confidence: 99%

An Integrated Approach of GRA Coupled with Principal Component Analysis for Multi-Optimization of Shielded Metal Arc Welding (SMAW) Process

et al. 2020

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Welding distortion is a critical issue as it leads to severe deterioration of structural integrity of welded work piece and dimensional precision. This study aims at studying the effects of shielded metal arc welding (SMAW) parameters on the evolution of mechanical properties, including tensile strength, impact toughness, and hardness, along with angular distortion on a welded joint from SA 516 grade 70. Such parameters are analyzed and optimized by employing the Taguchi method and Grey relational analysis. SA 516 grade 70 is commercially used for fabrication of storage tanks, boilers and pressure vessels. SMAW is investigated with three levels of root gap, groove angle, electrode diameter, and pre-heat temperature, which were varied on a butt joint in flat (1 G) position to determine their effects on response variables at room temperature. Nine experiments were designed using a Taguchi L9 orthogonal array, welded according to American Society of Mechanical Engineers (ASME) section IX, and samples were prepared and tested as per ASTM A 370. The Taguchi method and Grey relational analysis were employed to observe the most significant parameters and optimal levels that synergically yield improved responses. Results are validated by conducting confirmatory experiments that show good agreement with optimum results.

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“…However, related research has revealed that tensile strength of arc-welded joints is generally less than 1000 MPa, and the joint efficiency (tensile strength ratio of joints to base metal) is usually lower than 60% (Refs. [6][7][8] because the microstructures of weld metal (WM) mainly consist of the soft phase, such as austenite and -ferrite (Refs. 8,9).…”

Section: Introductionmentioning

confidence: 99%

Laser Heat Treatment of Low-Alloy Ultrahigh-Strength Steel Laser-Welded Joints

2019

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Analysis of Welding Groove Angle and Geometry on Strength of Armor Steel

Cited by 20 publications

References 11 publications

Analysis of welding groove configurations on strength of S275 structural steel welded by FCAW

Analysis of welding groove configurations on strength of S275 structural steel welded by FCAW

An Integrated Approach of GRA Coupled with Principal Component Analysis for Multi-Optimization of Shielded Metal Arc Welding (SMAW) Process

Laser Heat Treatment of Low-Alloy Ultrahigh-Strength Steel Laser-Welded Joints

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