When using DCEN, where is 2/3 of the heat located?

When using Direct Current Electrode Negative (DCEN), the majority of the heat generated during the welding process is concentrated in the electrode. This is primarily because, in the DCEN configuration, the electrode acts as the negative terminal of the circuit. As a result, it receives most of the electrical current, leading to the generation of heat due to resistance.

In this arrangement, 2/3 of the heat being produced is attributed to the electrode, which is critical for effective melting and fusion of the filler material into the base metal. The heat generated in the electrode aids in achieving proper melting of the welding rod, allowing for a strong weld joint to form.

In contrast, the workpiece and the other options receive less heat directly during the process. While the workpiece does get heated, it does not absorb as much of the heat as the electrode does when using DCEN. Understanding this heat distribution is essential for managing and controlling the welding process effectively, ensuring optimal penetration and weld quality.