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Welding is omnipresent, not only in companies specialising in metal assembly, but also in the maintenance workshops of many companies. It is subject to standards that evolve with new technologies, whether in welding or even in some industries. Whether you live in the USA, Europe or anywhere else in the world, it is essential for a welding professional to know these standards. Welding processes are many and varied. Their use concerns competent professionals, technicians and engineers who have to deal with the problems posed by these methods of assembly used in the industrial or craft sector. This website therefore contains information on the field of welding, both manual and robotic. But also in a lighter way on the trades of the industry (machining for example). These processes have evolved considerably in recent years, offering professionals increasingly optimised and safe working conditions. With modern equipment, the tasks required of welders are now based on the mastery and accessibility of the controls for the adjustment parameters for a welding operation defined in the welding specifications and on the precision of the manual gesture or the automatic welding mechanism. This blog provides you with information on the techniques and know-how for successful welding, in accordance with the standards, directives, quality controls, respect for safety and the environment of the professional welder. And also the success of a quality weld, which implies good knowledge of the materials and elements to be welded, the type of welding, the judicious choice of consumables, the settings of the welding machine. This requires technical and practical training. The list of required professional skills is available on this website. It is available to students as an aid to prepare for their professional qualification exams, but also to workers in the industrial and construction sectors who wish to enrich their knowledge of arc welding. My blog takes into account the technological evolution in the field of welding, the new European or international standards, their implementation, the experience gained by the welding technicians of the companies and the requirements of the trade.
Welded joints are the most delicate part of metal structures. The weld seam must ensure the continuity of the material in its mechanical and metallurgical characteristics. Highly stressed joints, such as pressure vessels like SpaceX rockets, are calculated with a weld safety factor of up to 1.66. This means that, for a 10mm thick wall that would be perfectly resistant to stresses, and provided that the weld is 100% checked by X-ray, the design office will adopt a thickness of 10 x 1.66 = 16.6mm. In the following pages I will go into more technical details about welding.
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