Analysis of Welding Groove Configurations on Strength of S275 Structural Steel Welded by FCAW

Bekir ÇEVİK

doi:https://doi.org/10.2339/politeknik.389642

Makale detayları

Analysis of Welding Groove Configurations on Strength of S275 Structural Steel Welded by FCAW

Yazarlar:

Bekir ÇEVİK

Yayıncı:

Gazi University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Journal of Polytechnic 2018 Vol.21 Issue 2, pp.489-495

Belge Tipi:

Makale

Yayın Tarihi:

5/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000590682

Sıklık:

Aylık

eISSN:

2147-9429

DOI:

https://doi.org/10.2339/politeknik.389642

Özet:

 


The 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. 


.

 


The 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. 


.

Makale detayları

Analysis of Welding Groove Configurations on Strength of S275 Structural Steel Welded by FCAW

Yazarlar: Bekir ÇEVİK

Yayıncı: Gazi University

Ana Başlıklar: Uygulamalı fizik

Dergi: Journal of Polytechnic 2018 Vol.21 Issue 2, pp.489-495

Belge Tipi: Makale

Yayın Tarihi: 5/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000590682

Sıklık: Aylık

eISSN: 2147-9429

DOI: https://doi.org/10.2339/politeknik.389642

Sayı

Yazarlar:

Bekir ÇEVİK

Yayıncı:

Gazi University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Journal of Polytechnic 2018 Vol.21 Issue 2, pp.489-495

Belge Tipi:

Makale

Yayın Tarihi:

5/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000590682

Sıklık:

Aylık

eISSN:

2147-9429

DOI:

https://doi.org/10.2339/politeknik.389642