I am excited to share insights from my research on the optimization of arc welding parameters for FB590 hot rolled ferritic-bainitic steel with 2.5 mm thickness.

This study focuses on improving weld penetration and mechanical performance in lap joint welding using the PULSED-GMAW method.

FB590 steel is widely used in the automotive industry due to its combination of high strength and good formability. However, achieving optimal weld quality requires careful control of welding parameters such as:

• Welding speed
• Wire feed rate
• Heat input

In this research, different welding parameter combinations were tested to analyze their influence on:

• Weld penetration
• Tensile strength
• Microhardness distribution
• Weld morphology

The experimental analysis included metallographic examination and mechanical testing to evaluate the relationship between welding parameters and joint performance.

The results highlight how parameter optimization can significantly improve weld quality while maintaining structural integrity in thin high-strength steels.

This research contributes to a better understanding of welding behavior in advanced automotive steels and supports more efficient manufacturing processes.

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Keywords

Welding • FB590 Steel • PULSED-GMAW • Automotive Materials • Welding Optimization • Materials Engineering