Investigation of Mechanical Properties of S235JR And S355JR Steels Joined with MAG Welding Technique

Halil Gültoplayan; Mehmet Serkan Yıldırım; Yakup Kaya

Makale detayları

Investigation of Mechanical Properties of S235JR And S355JR Steels Joined with MAG Welding Technique

Yazarlar:

Halil Gültoplayan | Mehmet Serkan Yıldırım | Yakup Kaya

Yayıncı:

Zonguldak Bulent Ecevit University

Ana Başlıklar:

Kaynak Teknolojileri

Dergi:

Karaelmas Fen ve Mühendislik Dergisi Vol.15 Issue 1, pp.165-174

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001345571

pISSN:

2146-7277

Anahtar kelimeler:

Özet:

 In the study, S235JR and S355JR structural steels used in the manufacture of power transformers and boilers were joined by Metal Active Gas MAG welding. Microhardness, notch impact and bend tests were carried out on the resulting welds. In the microhardness measurements, the highest hardness value 2455 HV of all the joints made was measured in the weld metal of the S355-S355 material pair joined using welding current value number 3. The microhardness measurements showed that although there was not much difference in the joints where the highest welding current was used, there was a slight increase in hardness values compared to other currents. In addition, the highest hardness values in all joints were measured in the weld metals, followed by the heat affected zone HAZ and the base materials. As a result of the notch impact tests, the highest impact toughness of all joints was measured as 81 J in the weld metal and 103 J in the HAZ of the sample joined using welding current value number 1 from the S235-S235 welded material pairs. The notch impact test results showed that the impact toughness values of the HAZs were higher than those of the weld metals. In addition, because of the experimental studies, it was found that as the hardness values increased, the impact toughness values decreased. Finally, because of the bending tests, it was found that there were no defects in any of the welded specimens.

 In the study, S235JR and S355JR structural steels used in the manufacture of power transformers and boilers were joined by Metal Active Gas MAG welding. Microhardness, notch impact and bend tests were carried out on the resulting welds. In the microhardness measurements, the highest hardness value 2455 HV of all the joints made was measured in the weld metal of the S355-S355 material pair joined using welding current value number 3. The microhardness measurements showed that although there was not much difference in the joints where the highest welding current was used, there was a slight increase in hardness values compared to other currents. In addition, the highest hardness values in all joints were measured in the weld metals, followed by the heat affected zone HAZ and the base materials. As a result of the notch impact tests, the highest impact toughness of all joints was measured as 81 J in the weld metal and 103 J in the HAZ of the sample joined using welding current value number 1 from the S235-S235 welded material pairs. The notch impact test results showed that the impact toughness values of the HAZs were higher than those of the weld metals. In addition, because of the experimental studies, it was found that as the hardness values increased, the impact toughness values decreased. Finally, because of the bending tests, it was found that there were no defects in any of the welded specimens.

 In the study, S235JR and S355JR structural steels used in the manufacture of power transformers and boilers were joined by Metal Active Gas MAG welding. Microhardness, notch impact and bend tests were carried out on the resulting welds. In the microhardness measurements, the highest hardness value 2455 HV of all the joints made was measured in the weld metal of the S355-S355 material pair joined using welding current value number 3. The microhardness measurements showed that although there was not much difference in the joints where the highest welding current was used, there was a slight increase in hardness values compared to other currents. In addition, the highest hardness values in all joints were measured in the weld metals, followed by the heat affected zone HAZ and the base materials. As a result of the notch impact tests, the highest impact toughness of all joints was measured as 81 J in the weld metal and 103 J in the HAZ of the sample joined using welding current value number 1 from the S235-S235 welded material pairs. The notch impact test results showed that the impact toughness values of the HAZs were higher than those of the weld metals. In addition, because of the experimental studies, it was found that as the hardness values increased, the impact toughness values decreased. Finally, because of the bending tests, it was found that there were no defects in any of the welded specimens.

 Yapılan çalışmada, güç trafoları kazan imalatında kullanılmakta olan S235JR ve S355JR yapı çelikleri metal aktif gaz MAG kaynak tekniği kullanılarak birleştirilmiştir. Elde edilen kaynaklı birleştirmelere, mikrosertlik, çentik darbe ve eğme incelemeleri yapılmıştır. Yapılan mikrosertlik ölçümlerinde, yapılan tüm birleştirmeler içinde en yüksek sertlik değeri 2455 HV, 3 numaralı kaynak akım değeri kullanılarak birleştirilen S355-S355 malzeme çiftinin kaynak metalinde ölçülmüştür. Ayrıca mikrosertlik ölçümlerinde en yüksek kaynak akımının kullanıldığı birleştirmelerde çok fazla fark olmasa da diğer akımlara göre sertlik değerlerinde bir miktar artış olduğu belirlenmiştir. Tüm birleştirmelerde en yüksek sertlik değerleri kaynak metallerinde ölçülmüş onu sırasıyla ısı tesiri altında kalan bölgeler ITAB ve ana malzemeler takip etmiştir. Yapılan çentik darbe testleri sonucunda, tüm birleştirmeler içinde en yüksek darbe tokluğu S235-S235 kaynaklı malzeme çiftlerinden, 1 numaralı kaynak akım değeri kullanılarak birleştirilen numunenin kaynak metalinde 81 J ve ITABde 103 J olarak ölçülmüştür. Çentik darbe test sonuçları ITABların darbe tokluk değerlerinin kaynak metallerine göre daha yüksek olduğunu göstermiştir. Ayrıca deneysel çalışmalar sonucunda sertlik değerlerindeki artışların darbe tokluğu değerlerinde azalma meydana getirdiği tespit edilmiştir. Son olarak yapılan eğme testleri sonucunda kaynaklı numunelerin tamamında herhangi bir hata oluşmadığı belirlenmiştir.

Makale detayları

Investigation of Mechanical Properties of S235JR And S355JR Steels Joined with MAG Welding Technique

Yazarlar:

Halil Gültoplayan | Mehmet Serkan Yıldırım | Yakup Kaya

Yayıncı:

Zonguldak Bulent Ecevit University

Ana Başlıklar:

Kaynak Teknolojileri

Dergi:

Karaelmas Fen ve Mühendislik Dergisi Vol.15 Issue 1, pp.165-174

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001345571

pISSN:

2146-7277

s235jr

s355jr

MAG weldingMAG kaynağı

S235JR

S355JR

Sayı

Makale detayları

Investigation of Mechanical Properties of S235JR And S355JR Steels Joined with MAG Welding Technique

Yazarlar: Halil Gültoplayan | Mehmet Serkan Yıldırım | Yakup Kaya

Yayıncı: Zonguldak Bulent Ecevit University

Ana Başlıklar: Kaynak Teknolojileri

Dergi: Karaelmas Fen ve Mühendislik Dergisi Vol.15 Issue 1, pp.165-174

Belge Tipi: Makale

Yayın Tarihi: 4/2025

Belge Dili: Türkçe

Document ID (Org No.): 2001345571

pISSN: 2146-7277

s235jr

s355jr

MAG weldingMAG kaynağı

S235JR

S355JR

Sayı

Yazarlar:

Halil Gültoplayan | Mehmet Serkan Yıldırım | Yakup Kaya

Yayıncı:

Zonguldak Bulent Ecevit University

Ana Başlıklar:

Kaynak Teknolojileri

Dergi:

Karaelmas Fen ve Mühendislik Dergisi Vol.15 Issue 1, pp.165-174

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001345571

pISSN:

2146-7277