Sulfur burnout in the process
Desulfurization is the process by which sulfur is removed from metallic compounds. This reduces unwanted accompanying elements and improves the properties of the final product.
Physical-Chemical Mechanism of Action
Sulfur burnout refers to the volatilization of sulfur compounds in metal materials. This happens through thermal or chemical processes, where sulfur dioxide forms and is removed.
Metallurgical Relevance & Welding Risks
Sulfur burnout is key to reducing sulfur content in steels and other metals. Too high a sulfur level can cause corrosion, loss of ductility, and low strength. In arc welding, sulfur dioxide can form, which can contaminate the weld and impair its mechanical properties.
Workshop Practice & Action Instructions
To ensure sulfur burnout, take these steps:
• Use high-quality filler metal with low sulfur content.
• Keep the weld pool temperature constant and under control.
• Make sure the shielding gas purification system works to capture sulfur dioxide.
• In arc welding, use a suitable shield to promote sulfur burnout.