https://www.finegosteel.com/ In the multi-wire submerged arc welding of straight seam welded pipes, several key parameters significantly influence the welding process: welding current, arc voltage, and welding speed. Increasing the welding current of all wires results in higher reinforcement of the weld seam, with the first wire contributing the most to this effect. Arc voltage affects the width of the weld pool, with lower voltages causing narrower pools and potential issues with weld seam transitions. Controlling voltage is crucial to avoid undesirable weld pool shapes, such as the "gourd" shape. Welding speed impacts both the depth and width of fusion, with faster speeds leading to shallower and narrower welds. However, maintaining welding quality is paramount when adjusting speed to enhance production efficiency. Additionally, factors like power supply configuration, flux characteristics, and wire arrangement play essential roles in optimizing the welding process. Balancing these parameters ensures consistent weld quality, proper fusion, and efficient production in the fabrication of straight seam welded pipes through multi-wire submerged arc welding.