Welding portal for special tube manufacturing
Together with our customer, the long-established EEW-Bergrohr GmbH in Siegen-Weidenau, we produced and delivered a rail-bound welding portal with support for accommodating a customer welding system within a very short planning and manufacturing time.
The requirement was to provide the support and the portal for accommodating the customer welding system control and the welding system with a weight of 5,000 kg as well as the hydraulic workpiece clamping fixture with a clamping force of 50,000 N. Other requirements were minimal deformation of the system structure and compliance with the tolerances stipulated by the customer. The main running gears of the welding portal were designed to allow a corrective movement of the individual running gear for adapting the position to the direction of the sheet joints to be welded. The running gear of the support features special controlled drives and running gears with a control with speed feedback. These allow a travelling speed of 20 m/min in fast traverse as well as a travelling speed of 0.8 - 2.3 m/min with continuous speed preselection and a control accuracy of 2% for the welding process.