Teamwork in lifting: Man and machine
Dörrenberg Edelstahl: Development, production and processing of steel, casting products, heat treatment, and surface technology—since 1860. In their Dieringhausen warehouse, not far from Cologne, Germany, TRUNINGER lifting magnet systems are in charge of moving the heavy round steel bars.
Processing in one-man operation
Dörrenberg operates a warehouse at the Dieringhausen location where they store high-quality steels in slabs or as round bars. Mechanical engineering customers make up the main bulk of their customers. Whenever one of them orders a specific product, the steel specialist works it up and cuts it to size on specialized cutting machines. To load these machines, the company employs two separate TRUNINGER lifting magnet systems – one dedicated to the handling of slabs and one to round bars.
The systems hoist the steel bodies in the storage area of the warehouse and then transport them safely to the cutting machines using their strong magnets. There, they are sawed according to customer specifications. Thanks to the innovative and user-friendly TRUNINGER magnet systems, all of this can be carried out by only one person in one-man operation: thus, the employees and the lifting magnet system form a well-coordinated team and saws keep running continously.
Core competence: Remanence
One main benefit of the TRUNINGER controller systems is their reliable demagnetization of steels: They magnetize the slabs and round bars to 2.4 T with high precision in order to hoist and handle them safely. Since magnetized parts influence the cutting process, e.g. when metal chips stick to the product, the ability to demagnetize steel when the systems are turned off is crucial. But TRUNINGER’s controller system does this just as precisely as it magnetizes the loads when lifting them: Right after depositing it, the steel reaches a value of less than 2 mT – an equivalent of less than one thousandth of the previous magnetization. "The remanence value is quite crucial for processing steels," emphasizes Heinz-Gerd Engel, Head of Electrical Engineering at Dörrenberg Edelstahle. "Thanks to the TRUNINGER controllers, we can reliably ensure that there is no significant residual magnetism when start cutting on the saw."
Maintenance: Available but not necessary
To ensure their longevity, TRUNINGER technicians service the low-wear magnet once a year. "Annual maintenance is a legislative requirement and also obligatory to comply with the employers' liability insurance association", knows Rolf Truninger, Managing Director of TRUNINGER AG. "Our magnets and the control technologies are, however, more or less free of wear. This becomes clear again and again during maintenance", adds his partner Felix Truninger. "If any damage occurs, it is mostly due to wear and tear of moving cables or cable drums".
