African Fusion March 2016

INDEX TO ADVERTISERS Today’s technology IIW International Conference, 2016 T he 69 th IIW Annual Assembly and In- ternational Conference will be held in Melbourne, Australia from 10 to 16 July, 2016 under the theme: FromConcept to De- commission: The Total Life Cycle of Welded Components . Welding affects the long-term life cycle and performance of so many of the world’s assets, across sectors as diverse as utilities and manufacturing, to mining, oil and gas. Welding is the bond that holds together bridges that link nations, oil platforms that power entire countries, andmanufacturing plants that feed entire communities. The conference aims to explore the entire life cycle of weldments, from initial concept, design and manufacturing, right through to the installation, maintenance, and repair of welded components, aswell as life extension and decommissioning. www.iiw2016.com Narrow gap hot wire TIG welding is emerging as an essential technique for joining critical components such as those required for the ITER, mooted to be the world’s largest tokamak fusion reactor.

I TER (the way in Latin) is one of the most ambitious energy projects in the world today. In southern France, 35 nations are collaborating to build the world’s largest tokamak fusion reactor, ITER chooses narrow gap welding for its structural sub-assemblies a magnetic device that has been de- signed to prove the feasibility of fusion as a large-scale and carbon-free source of energy based on the same principle that powers the Sun and stars. ITER is being pursued to test the manipulator is incorporated, it is realis- tic to consider using the narrow gap TIG process toweld sections of up to400mm thick, given the numerous relevant advantages compared to competing processes availableon themarket today. This technology can alsobe adopted

integrated technologies, materials, and physics regimes necessary for the com- mercial productionof fusion-based elec- tricity. It will be the first fusion reactor to produce net energy and to maintain fusion for long periods of time. The project represents a unique challenge for the assembly of work- pieces, particularly on site, due to the required precision after assembly and zero-defect end quality. Critical areas include the pre-con- ditions required in terms of mechanical preparation, positioning and fixtures, as well as unavoidable deformation that occurs during assembly by welding. Narrow gap hot wire TIG welding is emerging as an essential technique for joining critical components such these, with large wall thicknesses that need to be completed and assembled on-site. This welding process perfectly meets the constraints involved in the final assembly because of its all-positional capability. Polysoude can offer two main tech- nological approaches: • Using a torch with a fixed electrode position. • A system with an oscillating elec- trode. The first technique meets productiv- ity requirements for the preparation of joints with perfectly defined tolerances. The second technique, however, satis- fies the need for maximum flexibility in compensating for workpiece prepara- tion and fit up tolerances and for shrink- age during welding. Torch carriers, such as robots, col- umn and boom and carriage-type welding manipulators, are tools that are adapted to the size and geometry of the joint to bewelded. If awell-designed

in all areas of industry, such as the con- struction of equipment for the energy (hydro-electric, conventional fossil fuel and nuclear power plants), petrochemi- cal and to the manufacture or repair of heavy walled pipes. Promoting R&D Polysoude has been creating solutions best adapted to the requirements of the industry since its foundation in the early 1960s. To master arc welding pro- cesses and their automation, Polysoude strives to use the latest GTAW, Plasma, GMAW and FCAW technologies, along with all-position orbital welding and mechanised solutions. The company prides itself on its ability to offer: • Research and development. • Testing and feasibility studies. • Reliability and user-friendly graphi- cal user interfaces. • Small volume, custom made hard- ware and software systems with dedicated mechanical and elec- tronic engineering. • Welding and after sales services. • Training, commissioning and sup- port services. The strictest checks areapplied through- out the production and assembly pro- cess to ensure that Polysoude solutions are competitive and that customers’ needs are being met. Polysoude has been ISO 9001-certi- fied since April 2006. This certification defines the approach taken towards continuous quality improvement of products and the services and also ap- plies to the company’s Intranet, TDMS, CAD, CAM, ERP and CRM systems. www.polysoude.com

Afrox......................................................................IFC Air Liquide............................................................. 18 Air Products........................................................... 33 Envirox................................................................... 35 ESAB. ..................................................................... 16 Hydra-Arc. ............................................................. 29

Lincoln Electric ......................................... OFC, OBC Renttech SA......................................................... IBC SAIW......................................................................... 2 voestalpine Böhler Welding................................. 30 Yaskawa Southern Africa...................................... 10

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March 2016

AFRICAN FUSION