What is true about straight polarity in welding?

In straight polarity welding, the setup involves the workpiece being connected to the positive terminal of the power source, while the electrode is connected to the negative terminal. This configuration is distinct because it maximizes the amount of heat generated at the workpiece, which is crucial for effective welding. The positive charge on the workpiece attracts electrons from the negatively charged electrode, resulting in a more stable arc and improved penetration into the material. This setup is particularly advantageous for certain applications, such as in Gas Metal Arc Welding (GMAW) and Shielded Metal Arc Welding (SMAW), where deeper welds and better fusion are desired.

Understanding the role of polarity is key for welders, as it directly affects the welding process, electrode selection, and the characteristics of the weld produced.