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Journals / Düzce Üniversitesi Bilim ve Teknoloji Dergisi / 2020 / Cilt: 8 - Sayı: 1

Effect of Different Welding Currents and Speeds on Microhardness of XAR 500 Series Steels in Robotic MAG Welding Method

Robotik MAG Kaynak Metodunda XAR 500 Serisi Çeliklerin Mikrosertliğine Farklı Kaynak Akımlarının ve Hızlarının Etkisi

Volkan ONAR
Pages
1193–1203
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The welding current which providing the optimum hardness ratio in the obtained welded joints was presented to the users.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study is to investigate the effect of welding current on microhardness in combining XAR (eXtra Wear Resistance) steels with robotic MAG welding method.
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Key Findings & Data:In this study, the effect of welding current intensity on microhardness in combining XAR 500 steel of 4 mm thickness used in heavy duty machine with MAG welding method was investigated.
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Conclusion & Impact:The welding current which providing the optimum hardness ratio in the obtained welded joints was presented to the users.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:XAR Çelikleri · Robotik MAG Kaynağı · Mikrosertlik

Abstract

In this study is to investigate the effect of welding current on microhardness in combining XAR (eXtra Wear Resistance) steels with robotic MAG welding method. In this study, the effect of welding current intensity on microhardness in combining XAR 500 steel of 4 mm thickness used in heavy duty machine with MAG welding method was investigated. In the preparation of welded samples, MAG welding robot with speed, voltage and current control is used. Three different welding current densities were selected as welding current intensity 140A, 160A and 180A. Welding speed was kept constant at 350mm/min. In order to test the effect of the welding speed, the welding current was kept constant at 160A and at speeds of 300mm/min, 400mm/min and 450mm/min. MG-2 welding wire with 1mm thickness was used. Mixed gas with 86% Ar, 12% CO2 and 2% O2 was used. Microhardness obtained from welded joints were analyzed. As a results, it has been observed decrease of HAZ hardness on welded joints of this material groups. Therefore, was observed decrease of crack risk in HAZ of weldment when decreased HAZ hardness. The welding current which providing the optimum hardness ratio in the obtained welded joints was presented to the users.

Özet

Bu çalışmada, XAR (eXtra Aşınma Dayanımı) çeliklerinin robotik MAG kaynağında kaynak akımının kaynaklı birleştirmelerin mikrosertliği üzerine etkisi incelenmiştir. Bu çalışmada, ağır hizmet makinelerinde kullanılan 4 mm kalınlıktaki XAR 500 çeliğinin MAG kaynak yöntemiyle birleştirilmesinde kaynak akımı yoğunluğunun mikrosertliğe etkisi incelenmiştir. Kaynaklanmış numunelerin hazırlanmasında hız, gerilim ve akım kontrollü MAG kynak robotu kullanılmıştır. 140A, 160A ve 180A olmak üzere üç farklı kaynak akım yoğunluğu seçilmiştir. Kaynak hızı 350mm/dak olarak sabit tutulmuştur. Kaynak hızının etkisini test etmek için 300mm/dak, 350mm/dak, 400mm/dak ve 450 mm/dak. olarak seçilmiş kaynak akım şiddeti 160A’ de sabit tutulmuştur. 1 mm kalınlığında MG-2 kaynak teli kullanılmıştır. %86 Ar, %12 CO2 ve %2 O2 içeren karışım gaz kullanılmıştır. Sonuç olarak, bu malzeme gruplarının kaynaklı bağlantılarında ısı tesiri altındaki bölge (ITAB) sertliğinin azaldığı gözlenmiştir. Bu nedenle ITAB sertliğinin azalması durumunda çatlak riskinin azaldığı gözlenmiştir. Elde edilen kaynaklı bağlantılarda optimum sertlik oranını sağlayan kaynak akımı ve kaynak hızı kullanıcılara sunulmuştur.

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Cite This Article

ONAR, V. (2022). Effect of Different Welding Currents and Speeds on Microhardness of XAR 500 Series Steels in Robotic MAG Welding Method. Düzce Üniversitesi Bilim ve Teknoloji Dergisi, Cilt: 8 - Sayı: 1, 1193–1203. https://ajindex.com/articles/494142

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