Welding smoke extraction
Exhausting during welding is important to ensure clean working environment inside working hall. We produce filtration units, which are suitable for the extraction of fume, dust, smoke, and aerosol generated during welding. Welding fume is formed by set of health hazardous substances like metal oxides and their alloys, which are very dangerous for human organism because of their PM 2,5 size. These welding fumes particles might be carcinogenic and cause permanent health complications.
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Problem of large welding workplaces exhaust
In large welding workplaces, where larger weldments are produced, are attempts to design ideal exhaust systems are rather futile. It is possible to apply suction arms with extension arms, thanks to which we cover the entire working space. But there is a problem about suction arms and that is the fact, that they have very limited area of effective exhausting and they must be positioned very precisely. It is the positioning of the suction arms that is the biggest obstacle to proper suction. Welders often perceive suction arms as an obstacle to their own work and refuse to use them.
Solution of local welding workplaces exhaust
In local workplaces, where smaller weldments are welded, it is possible to install exhaust hoods, that catch almost all welding fumes. It is about workplace for repairs after robotic welding or about small local welding workshops for weldments of max size 2 meters. An extraction hood with a lower and upper welding smoke trap is installed at the extraction table. An extraction effect provides deflection of rising smoke away from the worker. The welder is completely protected by exhausting system and it is not necessary for him to have his own supply of filtered air to the welding mask.
Solution of welding robots exhaust
Robotic workplaces are very widespread, especially in the automotive industry. Welding robots exhaust, which are in closed cells, is solved by an extraction hood located under the ceiling of the cell in the space above the welded part. In welding robots exhaust, we placed a great deal emphasis on security against intrusion sparks to the filter and decrease risk of burnout in filter by installing sorbent dosing station.
Solution of scoring robots exhaust
Group of scoring robots is created by large workplaces with individual welding spots. The smoke is practically everywhere and in very small intensities. Our opinion after many realizations is, that it is NOT POSSIBLE to exhaust scoring robots in high-quality using the local extraction system.
The smoke, which is generated by spot welding, is by moving of the products by using a manipulator constantly scattered into the space. On the scoring pliers, which are equipped with local exhaust devices, we can see, that efficiency of extraction does not exceed 10 %. Another significant problem is the position of the robots waiting for the product’s hopper to be released. In this case, the robot with the smoking product stops in the upper position and waits for the hopper to be released. In this position the product smokes and the smoke spreads into the space. Our solution is to close the whole group of scoring robots with the clear tarpaulin into one technological space. Tarpaulins create walls of exhaust space and the ceiling of the hall is the ceiling of the enclosed space. The tarpaulin creates an enclosed space above the robotic workplaces, from which we exhaust polluted air. The exhaust system works by extracting air from the scoring robots and after filtering we return the air back into the space of the working hall. This prevents the spread of smoke from the scoring robots towards the area where are the operators.
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