Scaling Resistance
Scale resistance is the ability of metals to resist oxidation at high temperatures in the presence of oxygen and avoid porosity. This improves weldability and extends component life.
Physical-Chemical Mechanism of Action
Scale resistance refers to the oxidation of metals under oxygen. At high temperatures, metals can oxidize quickly and form dense, flaking oxide layers. These layers can cause porosity in the weld and affect joint strength.
Metallurgical Relevance & Welding Risks
Metals with low scale resistance oxidize quickly at high temperatures, leading to porosity and cracking. This can impair the strength of the weld and shorten the service life of components.
Workshop Practice & Action Instructions
To improve scale resistance, metals can be treated with additional elements such as silicon or titanium. When welding, it is important to ensure sufficient deoxidation and to cool the weld quickly and evenly.