Abstract
In Pressure vessels and Boilers, manufacturer companies use the Submerged Arc welding (SAW) process to weld thick plates. Tensile strength, impact strength, and hardness are mechanical properties that define the output quality of the weld. Voltage, current, stick out, and travel speed all are the input parameters of the submerged arc welding process which can be controlled by a manual, semi-automatic, or automatic controller. ASME SA 515 Gr70 was selected as a base metal. ESAB SA 10K filler wire and OK Flux 10.7L flux selected for the SAW process. Factorial design use for experiments to optimize the process parameters. To measure the hardness of the Heat Affected Zone (HAZ), the Vickers hardness test is used in the process. The regression model is used to predict HAZ hardness in the weld. To optimize the process parameters of the SAW process, the factorial design is used.
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