What adjustment is commonly made on the machine when TIG welding stainless steel?

In TIG welding stainless steel, the adjustment commonly made on the machine is amperage. This is crucial because stainless steel requires precise heat control during the welding process to prevent distortion, excessive warping, and to maintain its corrosion resistance properties. The amperage setting directly influences the heat input, which is critical for achieving a proper weld pool and ensuring good penetration without burning through the material.

When welding stainless steel, the required amperage can vary based on the thickness of the material and the joint configuration. Lower amperage settings are often used for thinner materials to avoid overheating, while higher settings can be necessary for thicker sections to ensure full penetration. Adjusting the amperage helps to create a stable arc and facilitates better control over the molten weld puddle, leading to a cleaner and more aesthetically pleasing weld.

Understanding this helps welders achieve better results in their projects, particularly with a material as sensitive as stainless steel, where maintaining its inherent properties is essential.