Overhead cranes - ABUS - #27

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27 Moving on up. crane systems Before the next processing stage, web plates are welded into place to protect the girder against twisting; stiffeners are inserted to improve the overall stability of the structure. Following assembly on the box girder line, the box girder is ready for processing by the portal welding unit. Plates of the lengths required for box girders are welded together on a PLC-controlled welding machine. The butt welding machine can process plates of different thicknesses and the automatic weld sequence control system ensures the highest welding quality possible. The moving portal welding unit designed in-house by ABUS personnel welds the web plates to the upper and bottom flanges and the rails on the top of the girder. The welding unit can complete up to six welds at the same time. The high-performance burners are automatically controlled by a PLC. Following the welding of the closure plates and the installation of the end carriages, the paintwork required for the specific application is applied.