Arc Power Density Profile
The arc power density profile shows how intense the arc core is at specific points. A sharp profile leads to deep penetration and a narrow heat-affected zone.
Physico-chemical mechanism of action
The power density profile describes the energy distribution in the arc column. With a pointed profile, the energy is concentrated in a small area, resulting in high temperatures and strong penetration.
Metallurgical relevance & risks in welding
A pointed profile can lead to deep penetration and a narrow heat-affected zone. This increases the risk of cracks and uneven stresses in the weld. Additionally, it can cause uneven distortion of the material.
Workshop practice & instructions
For pointed profiles, use a slow heat-conducting shielding layer to regulate the temperature distribution. Watch for even distortion of the material and check the stresses in the weld after the process.