Cetim, FIM and the Institut de Soudure are offering design and engineering offices a book to help them understand the phenomena behind welding distortion and how to reduce it: a "practical guide to welding distortion", available for download from Cetim's website, in the "Mecatheque" section.
Welding is indispensable in the construction of many mechanical structures. Due to physical and metallurgical phenomena, parts assembled in this way often undergo deformation once the operation has been completed. However, it is possible to limit these deformations to more or less acceptable values, by modifying the design and manufacturing range.
Intended for technicians and engineers designing welded assemblies, this book first reviews the properties of metallic materials and their evolution with temperature, then describes the thermodynamic mechanisms at play during the welding process and the factors influencing these mechanisms (linked to the nature of the material and the welding operation itself, or to the geometry of the part).
The guide then proposes a series of best practices to be implemented to limit these formations, both during design (use of prefabricated parts, prediction of deformation zones, thickness management, taking into account differences in supply, choice of assembly types...) and manufacturing. One chapter is dedicated to predicting deformations, and another to correcting them.
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