What is not an advantage of pulsed GTAW?

Pulsed Gas Tungsten Arc Welding (GTAW) offers several advantages that enhance the welding process. A key feature of pulsed GTAW is its ability to control the heat input effectively. By alternating between high and low amperages, pulsed GTAW minimizes the overall heat input to the workpiece, which results in reduced distortion and the ability to weld in all positions.

One of the significant advantages of pulsed GTAW is good penetration, allowing for deeper welds while still maintaining control over the molten pool. Additionally, the technique is versatile and suitable for all positions due to the precise control it offers, making it ideal for various applications.

In contrast, increased heat input is not an advantage of pulsed GTAW. This welding method is specifically designed to mitigate excessive heat, thereby preventing issues such as warping and distortion in the materials being welded. By reducing heat input, it allows for finer control over the weld characteristics, improving the quality of the joint while preserving the integrity of the base material. Therefore, the option highlighting increased heat input does not align with the benefits provided by pulsed GTAW.