Welding Fume Emission Rate
The amount of fume generated per unit time by a filler metal or process. It helps in selecting and adjusting the extraction system.
Physical-Chemical Mechanism of Action
The fume emission rate indicates how much fume is released per unit time by a specific welding consumable or process. This process depends on the chemical properties of the material and the temperature during the welding operation.
Metallurgical Relevance & Welding Risks
A high fume emission rate can lead to problems with extraction, which in turn leads to the formation of fume particles and pollutants in the workshop. This can endanger the health of personnel and impair air quality. Additionally, inadequate extraction can lead to contaminants in the weld metal microstructure, affecting its mechanical properties.
Workshop Practice & Action Guidelines
To determine the fume emission rate, first establish the chemical additives and the process used. Then measure the amount of fume released per unit time. Based on this data, decide what extraction equipment is needed to provide the required suction capacity. For example, if a welding consumable has a high fume emission rate, a more powerful and effective extraction system is necessary to ensure the air quality in the workshop remains protected.