When welding stainless in straight polarity, which terminal is used for the ground?

When welding stainless steel in straight polarity, the positive terminal is used for the ground. In the context of welding, straight polarity refers to a setup where the electrode is connected to the positive terminal, and the workpiece or base metal connects to the negative terminal. This configuration is particularly effective when working with stainless steel as it allows for better penetration and a more stable arc.

Using the positive terminal for the electrode provides a higher voltage, which helps in maintaining a clean and efficient weld. The increased positive charge attracts more electrons from the workpiece, thereby enhancing the welding process by achieving a more stable and controlled arc, which is crucial for the quality of welds in stainless steel applications.

This method ensures that the heat produced during welding is primarily focused on the workpiece, allowing for effective fusion of the metals without excessive overheating that could lead to issues such as warping or burn-through. Therefore, in the context of welding stainless steel, designating the positive terminal for the ground is essential for achieving optimal results.