Spierings offers the largest mobile tower crane in the market which can be assembled and operated by one person. Due to the strong recovery of the construction sector and expansion of market outside of the Netherlands, the demand for these tower cranes has risen rapidly in recent years. In addition, the introduction of the first hybrid tower crane is being planned, with which the manufacturer has the ambition to grow further into a global brand. As much as possible, all components, including the chassis, masts and booms, are manufactured in-house. The assembly and welding of the masts and booms takes up most space and increasing the throughput had to be achieved within the same space.
Accelerating knowledge acquisition regarding welding automation
Gijs Delissen: “Together with Valk Welding, we looked at the welding process where we could reduce handling and welding time. For the mast production line, a concept was developed consisting of a linear system for automation of the welding of the longitudinal seams, and a welding robot installation for the welding of the sub, end and head parts. Both complex installations had a delivery time of one year. We used that time to familiarize ourselves thoroughly with welding robotization. To this end, we purchased a welding robot for less complex parts. Consequently, we were able to take early measures in the upstream process to control the tolerances to align with the requirements of robot welding.”