Scholarlink

<p>This experimental research investigates the mechanical properties of V butt welded joints using Gas Metal Arc Welding (GMAW). The thickness of the EN 10,025-S275JR mild steel plates is 10&#xa0;mm. Three grades of the specimen like low, medium and high-grade mild steels are used in this research work. After carefully prepared the plates as per the guidelines given by ASME, using GMAW by varying Wire Feed Speeds (WFS), welding current and welding voltage. the welding is performed. Each grade. Nine specimens have been prepared for this research work. The butt jointed welds of these nine plates are tested by Ultrasonic Test (UT) to understand the weld defects. Then destructive test is being conducted to evaluate the mechanical performance under Tensile, Shear, Bending, Hardness and impact loading. The welded joints demonstrate exceptional mechanical performance under the ideal GMAW process parameters, which include wire feed speed of 340&#xa0;mm/s, welding current of 180&#xa0;A, arc voltage of 21&#xa0;V, and CO₂ shielding gas at a flow rate of 10 LPM. The welded joint is demonstrated by the tensile strength of 399&#xa0;N/mm². Additionally, the joint showes a 45.6 kN shear load capacity and a 43 kN fracture load, indicating that it can tolerate both tensile and shear failure modes. Besides, a hardness value of 66 confirms a balanced mix of strength and ductility, while a toughness value of 81&#xa0;J indicates good energy absorption before breakage. Together, these findings confirm that the chosen welding conditions are effective in generating high-quality. By optimizing the welding process, the research aims to enhance the quality, reliability, and lifespan of welded joints, benefiting industries like structural steel fabrication, pipeline construction, and heavy machinery manufacturing.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental investigation of wire feed speed effects on mechanical and defect characteristics of GMAW welded EN 10025-S275JR mild steel

  • 期刊论文

  • 发表日期：

    2026年3月26日

查看全文
  • D. R. Rajkumar,
  • Vishal Kumar,
  • J. Maniraj,
  • N. Dhasarathan,
  • Nikhil Kumar Mahraur

摘要

This experimental research investigates the mechanical properties of V butt welded joints using Gas Metal Arc Welding (GMAW). The thickness of the EN 10,025-S275JR mild steel plates is 10 mm. Three grades of the specimen like low, medium and high-grade mild steels are used in this research work. After carefully prepared the plates as per the guidelines given by ASME, using GMAW by varying Wire Feed Speeds (WFS), welding current and welding voltage. the welding is performed. Each grade. Nine specimens have been prepared for this research work. The butt jointed welds of these nine plates are tested by Ultrasonic Test (UT) to understand the weld defects. Then destructive test is being conducted to evaluate the mechanical performance under Tensile, Shear, Bending, Hardness and impact loading. The welded joints demonstrate exceptional mechanical performance under the ideal GMAW process parameters, which include wire feed speed of 340 mm/s, welding current of 180 A, arc voltage of 21 V, and CO₂ shielding gas at a flow rate of 10 LPM. The welded joint is demonstrated by the tensile strength of 399 N/mm². Additionally, the joint showes a 45.6 kN shear load capacity and a 43 kN fracture load, indicating that it can tolerate both tensile and shear failure modes. Besides, a hardness value of 66 confirms a balanced mix of strength and ductility, while a toughness value of 81 J indicates good energy absorption before breakage. Together, these findings confirm that the chosen welding conditions are effective in generating high-quality. By optimizing the welding process, the research aims to enhance the quality, reliability, and lifespan of welded joints, benefiting industries like structural steel fabrication, pipeline construction, and heavy machinery manufacturing.