MACH 2024 SHOW P


INDUSTRIAL APPLICATIONS


olysoude [Stand 19-725] specialises in the design, development and manufacture


of innovative arc welding solutions. The brand is synonymous with world- leading expertise in three core sectors: automatic orbital TIG welding systems, automated TIG and plasma welding solutions and TIGer weld overlay. Headquartered in Nantes, France,


since 1961, the company manufactures a variety of power sources and orbital welding equipment, like a wide range of open and closed welding heads. With 85% of its business based internationally, the company has developed a network of over 50 local partners. This is in addition to its own 13 subsidiaries, that provide a combination of sales and services. Today, as a smart-factory oriented company, Polysoude products are all designed to be ready for Industry 4.0. The aerospace industry was the first


to recognise the importance of orbital welding for its purposes. More than 1,500 welds are necessary to complete the high-pressure system of one single aircraft. Manual welding of the small, thin-walled tubes is extremely difficult, and the required consistent joint quality cannot be guaranteed. However, TIG / GTAW welding procedures using orbital welding have provided a solution, in which the parameter values are reliably controlled by the equipment and the final welds meet the same quality level as the qualified test welds. The food, diary and beverage industries


need tube and pipe systems meeting strict hygienic requirements. Full penetration of the welded joints is necessary; any pit, pore, crevice, crack or undercut can become a dead spot, where the medium is trapped and pathogenic bacteria growth could occur. Smooth surfaces everywhere inside the tubes enable successful cleaning and complete sterilisation of the system. The requisite surface quality can only be ensured if orbital TIG welding equipment is used. Plants in pharmaceutical industries


must be equipped with pipe systems for the transport and treatment of products


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and for the safe supply of clean steam and injection water. For injection water and its derivatives, which are intended for injection into the human body, the purity requirements are particularly high. Any trace of corrosion cannot be tolerated; therefore, welds must be corrosion resistant, especially to incidents such as the partial overheating of base material. Joints made by TIG / GTAW welding machines like with welding generators meet the high standards for extended corrosion resistance. Additionally, to avoid any subsequent oxidation or corrosion, their smooth surface can be passivated. A considerable proportion of plant equipment for chemical industries is manufactured and installed by means of orbital TIG welding. Chemical apparatus comprises of tubes, heat exchangers and converters, which are made of corrosion-resistant or refractory metals,


or alloys of titanium, zirconium, nickel, chrome and so on. As the service life of the installations depend directly on the quality level of the welded joints, strict control and traceability of the weld process are required by customers, inspection bodies and standards authorities. For the assembly of one heat exchanger, hundreds or even thousands of faultless welds must be carried out, thus, in this area, orbital welding is invaluable in ensuring the expected results. For the safety of fossil fuel power


stations and nuclear reactors, the whole range of orbital joining techniques are applied. Small diameter tubing must be connected, for sensing and control purposes, heat exchangers and other components are manufactured using orbital tube-to-tube sheet welding and thick-walled tubes for operation under high pressure and temperature must be assembled on site. The welding procedures and the weld quality are generally under constant surveillance by the respective authorities and external organisations.


www.polysoude.com


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