Investigation of Metallurgical Characterization and Mechanical Behaviour for Submerged Flux Cored Arc Welding Process

Öz

In this study, the mechanical and metallurgical properties of the welding materials obtained from the combination of submerged arc welding powder and flux cored wire were discussed in detail for the first time in the sector. Chemical analysis of flux cored wire and submerged arc welding powder combination was carried out on the St-52 (S355) quality 300x180x20 mm sized low carbon steel materials. For mechanical tests, a gap of 16 mm was left between the materials and 10 mm thick S355 quality metal base was placed under the parts. Combining welding operations were 29 Volt voltage, 460 Ampere current, 450 mm/min welding speed, 1.75 kj/mm heat input and 30 mm free wire length. Microstructural properties were determined by metallographic methods and confirmed by mechanical properties. As a result of the evaluation of all the data obtained, the synergistic effect of the high efficiency of the flux cored wire method and the high energy input of the submerged arc welding method was observed, and the results were conveyed to the readers in detail.

Anahtar Kelimeler

• Submerged Arc Welding
• Flux Cored Wire
• Mechanical and Metallurgical Properties

Proje Numarası

3130488

Tozaltı Özlü Ark Kaynağı Prosesinin Metalurjik Karakterizasyon ve Mekanik Davranışlarının İncelenmesi

Öz

Bu çalışmada sektörde ilk kez tozaltı kaynak tozu ile özlü telin birleşiminden elde edilen kaynak malzemelerinin mekanik ve metalurjik özellikleri detaylı olarak ele alınmıştır. Özlü tel ve tozaltı kaynak tozu kombinasyonunun kimyasal analizleri St-52 (S355) kalite 300x180x20 mm ebadında düşük karbonlu çelik malzemeler üzerinde yapılmıştır. Mekanik testler için malzemeler arasında 16 mm boşluk bırakılmış ve parçaların altına 10 mm kalınlığında S355 kalite metal altlık yerleştirilmiştir. Kombine kaynak işlemleri 29 Volt gerilim, 460 Amper akım, 450 mm/dak kaynak hızı, 1,75 kj/mm ısı girdisi ve 30 mm serbest tel uzunluğu altında gerçekleştirilmiştir. Mikroyapısal özellikler metalografik yöntemlerle belirlenmiş ve mekanik özelliklerle doğrulanmıştır. Elde edilen tüm verilerin değerlendirilmesi sonucunda özlü tel yönteminin yüksek verimi ile tozaltı kaynak yönteminin yüksek enerji girdisinin sinerjistik etkisi gözlemlenmiş ve sonuçlar detaylı olarak okuyuculara aktarılmıştır.

Anahtar Kelimeler

• Tozaltı Ark Kaynağı
• Özlü Tel Kaynağı
• Mekanik ve Metalurjik Özellikler

Destekleyen Kurum

TÜBİTAK

Proje Numarası

3130488

Teşekkür

"Özlü Tel ve Tozaltı Tozu Kombinasyonlarında Tozaltı Kaynak Yöntemiyle Düşük, Orta ve Yüksek Alaşımlı Birleştirme ve Sert Dolgu Kaynak Tüketim Malzemelerinin Tasarımı ve Prototip İmalatı" başlıklı Sanayi-ArGe projemin aynı zamanda doktora bitirme tezimin araştırma ve deneysel geliştirme aşamalarında destek veren TÜBİTAK'a teşekkürü borç bilirim.

Kaynakça

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