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Local extraction is the first choice for welding with regards to occupational safety. It ensures that welding fumes are detected right at the source and thus has the greatest chances in achieving high extraction rates. What type of local extraction is suitable for welding depends among other things on the application area.

Oversized extraction units and workshop ventilation systems, as well as incorrect planning of the airflow, can be harmful: in addition to effective work safety, companies are also concerned about cost-efficiency. The correct sizing and planning of the ventilation system is therefore crucial. There are ways of calculating the correct size. However, experience with welding fume extraction is equally important.

Extraction arms are the most commonly used equipment in Germany for welding fume extraction. The correct handling is decisive with regards to effective capture of welding fumes. A high coverage rate and thus the effectiveness of occupational safety largely depend on this. We explain which standards apply for the use of extraction arms and what you have to consider during handling.

A daily ration of milk against welding fumes: This used to be the be-all and end-all of occupational safety. Yet, the legend about the protective effect of milk against health damage caused by welding fumes is partially still persistent today. Yet, this is really more of an old wives’ tale than real fact.Milk against welding fumes used to be the mantra against the health consequences caused by hazardous substances during welding. Companies gifted their staff a daily ration of milk and thus considered their occupational safety duty done. Sometimes, a quarter liter of milk is said to be the required dose, other times, it is an entire bottle. This was, however, in times in which extraction technology and ventilation technology played absolutely no part yet in metal processing businesses.

If metal processing companies want to protect their employees and equipment, then filter technology plays an essential part for automated processes. Clausthaler Laser- und Werkstofftechnik GmbH agrees with this statement. After adding fiber laser cutting of pipes to its portfolio, an extraction plant cleans the air from hazardous substances using innovative filter technology.No new business area without modern filter technology: That was clear for Clausthaler Laser- und Werkstofftechnik GmbH (CLW) right from the start. Increasing cost pressures previously forced CLW to rethink its strategy.

Welding fumes affect the lungs and are toxic or carcinogenic. The health consequences for the welder depend mainly on the composition of welding fumes. Science differentiates between three effects.The hazardous substances in welding fumes created during welding are formed of several components: Basic and supplementary materials, inert gases, coatings, contamination and ambient air. Prerequisite for the formation of hazardous substances are certain physical and/or chemical processes. This includes: Evaporation, condensation, oxidation, decomposition, pyrolysis and combustion.

Thermal cutting generates harmful substances which are hazardous to health. A range of parameters influence the emission of harmful substances – and thus the potential for damage to health.
The work processes for thermal cutting are always developing.  In combination with the use of new work materials, it is thus essential that measures for employee protection in the workplace with regards to damage to health are continuously optimized and improved – this also applies for thermal cutting.

Every metal processor should know these days that welding fumes are harmful.  Yet, one question gets asked over and over again: What are welding fumes exactly? Just looking at the composition gives an indication of what hazards are behind welding fumes and why welding fume extraction is important.