Wind power industry SOLUTIONS FOR THE PRODUCTION OF ROTOR BLADES

2 · DOPAG · WIND POWER INDUSTRY DOPAG · WIND POWER INDUSTRY · 3 Since several decades we know the production requirements for rotor blades so that they withstand these high demands in long-term operation. One out of three rotor blades in the world is produced with a DOPAG machine. This makes DOPAG one of the world’s leading manufacturer of metering and mixing machines for rotor blades. As a member of the HILGER & KERN GROUP, DOPAG has been a reliable supplier as well as an experienced developmentand service-partner for industrial enterprises across various market segments since 1927. The company...

4 · DOPAG · WIND POWER INDUSTRY DOPAG · WIND POWER INDUSTRY · 5 One partner for all applications Efficient solutions for rotor blade production As leading manufacturer of custom build metering and mixing systems for the wind power industry, DOPAG provides the comprehensive portfolio needed for the various applications for the production of rotor blades. In general, rotor blades consist of glass- and carbon fibre reinforced plastics and reinforcement materials such as Balsa or foamed materials, that absorb total mechanical load while also optimizing weight. The production process begins with the...

6 · DOPAG · WIND POWER INDUSTRY DOPAG · WIND POWER INDUSTRY · The production requires three main demands on automated metering and mixing systems: ▪ Precise maintenance of a consistent mixing ratio ▪ High flexibility in terms of the flow rate ▪ Minimal delay in achieving working point DOPAG provides infusion systems with flow rates of more than 60 l/min and adhesive-paste systems being able to process more than 24 l/min. Due to the high resin consumption of the infusion process and the high quality requirements of composite fibre composites components, resin degassing systems must be used. Here,...

8 · DOPAG · WIND POWER INDUSTRY DOPAG · WIND POWER INDUSTRY · 9 Standard (Infusion-Station) Output rate 30 l/min and 60 l/min Control cabinet Automatic ratio check with weighing scales Electronically controlled valve modules ▪ chassis Control cabinet mounted onto a completely enclosed, mobile Mixing head enclosed, pumps mobile with chassis Metering overpressure protection Metering pump pumpsofwith theoverpressure B-componentprotection with magnetic coupling▪ Distance to basic metering machine up to 70 m Metering pump Three-phase asynchronous of the B-component motor with magnetic Scale module...

10 • DOPAG • WIND POWER INDUSTRY DOPAG • WIND POWER INDUSTRY • 11 gluemix2K adhesive dispensing system for rotor blade bonding The gluemix is a compact gear pump driven metering and mixing system, which has been specially developed for the production of rotor blades in the wind industry. It is used to handle medium to high viscosity multi component media such as polyurethane or epoxy very precise and reliably. Progressive cavity pumps are used for pulsation free supply of the material. The available filling station is suitable for original 200 l drums. ■ Output rate 14 l/min and 24 l/min ■ Control...

12 • DOPAG • WIND POWER INDUSTRY DOPAG • WIND POWER INDUSTRY • 13 gelcomixFor coating the rotor blade surface The gelcomix has been especially developed for processing highly thixotropic materials onto the untreated surfaces of rotor blades. Output rates of up to 5 l/min can be achieved with gear metering pumps, which are also suitable for abrasive fillers. Depending on the configuration, the following pumps can be used for the B component, also magnetically coupled: axial piston pumps, radial piston pumps or gear pumps. The material is supplied from material pressure vessels that are installed...

14 • DOPAG • WIND POWER INDUSTRY WIND POWER INDUSTRY • 15 puttymix For application of putty on rotor blade surface The finishing process of rotor blades has become more and more important based on the increasing blade lengths. To protect the surface of the rotor blade particularly well, small unevennesses are filled with putty material at the end of the production process. Based on decades of experience in metering and mixing a wide variety of materials, DOPAG has developed a specific system, the puttymix, which perfectly meters and mixes the two-component putty material with its high viscosity...

16 · DOPAG · WIND POWER INDUSTRY DOPAG · WIND POWER INDUSTRY · 17 Constant process control ensures high production reliability During the production process, all key product-related technical data from the respective component is recorded on the DOPAG LifeCycleLogger 4.0 as a final step and transmitted to the machine control unit when connected to the system. This includes: size, specific volumes or pressures, test bench results regarding efficiency, and other performance data. There is no need for manual selection or input processes, which removes the potential for error. For example, once a...

DOPAG • WIND POWER INDUSTRY • 19 18 • DOPAG • WIND POWER INDUSTRY ■ Installation of the entire system ■ All-round start-up: We accompany you until your series production is running stably ■ Preventive inspections and maintenance contracts ■ Fast execution of repairs ■ Short-term availability of original DOPAG parts ■ Worldwide delivery of spare parts ■ Inspection, maintenance and repair in the worldwide DOPAG branches, at sales partners or at your

DOPAG • WIND POWER INDUSTRY • 21 20 • DOPAG • WIND POWER INDUSTRY DOPAG Switzerland DOPAG Italy Finland DOPAG France DOPAG Benelux Norway DOPAG Czech Republic Hungary Bulgaria Greece Poland Slovenia Romania Slovakia Serbia DOPAG USA DOPAG Mexico DOPAG China DOPAG India DOPAG South Korea South Africa

22 • DOPAG • WIND POWER INDUSTRY DOPAG • WIND POWER INDUSTRY • 23 Notes Legal notice HILGER & KERN GROUP Metering and mixing technology Kafertaler Strafe 253 68167 Mannheim Germany Tel.: +49 (0)621 3705 500 Email: [email protected] Internet: www.dopag.de