Geometric Deformations of Welded Metallic Structures

Abstract:

Various research on the influence of different process parameters on quality characteristics of metallic structures assembled by welding have been accomplished [1 - 8, etc.]. The deformations of metallic structure components assembled by welding depend on the characteristics of the components, welded gap, welding speed, scheme and time of components fixing, etc. The paper presents the data and main results of an experimental research on the influence of two process parameters - the welding gap and the fixing time of the components - on the geometric deformations of certain metallic structure components in industrial conditions. Complex experiment and set-up including industrial welding robot and advanced measurement system have been designed and used. The geometric deformations of the welded metallic structure components are caused by forces and phenomenon heating - cooling, i.e. dilatation - contraction, respectively, acting during the periods of fixing - welding, fixing - cooling, cooling without fixing. Relevant dependences between the geometric deformation of welded structure and the considered influencing process parameters have been evidenced.

• Periodical: Applied Mechanics and Materials (Volume 657)
• Pages: 342-347
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.657.342
• Online since: October 2014
• Authors: Andreea Mădălina Ene Căscătău*, Patrice Plassais, Marian Gheorghe
• Keywords: Geometric Deformation, Industry, Metallic Structure, Welding

References

[1] O. Charrette, Effect of residual stress on modal parameters in welded structures (in French), PhD Thesis, Superior School of Technologies, Montréal, (2011).

[2] E. Le Guen, Study of laser hybrid welding process/GMAW: Characterization of the geometry and hydrodynamics of the melt and developement of a 3D thermal model (in French), PhD Thesis, South Bretagne University, (2010).

[3] B. Amri, Hysteresis effect on the thermal expansion of the residual stress due to welding (in French), PhD Thesis, Quebec University, August (2008).

[4] M. Carin, et al., Thermo-mechanical modeling for the opening of electron beam welded joints', ASME Pressure Vessel & Piping Division Conference Vancouver Canada, July 25, (2006).

[5] D. Deng, H. Murakawa, N. Ma, Predicting welding deformation in thin plate panel structure by means of inherent strain and interface element, J. of Sci. & Tech. of Welding and Joining. 17, 1 (2012) 13–21.

DOI: 10.1179/1362171811y.0000000065

[6] B. Saint-Germain, et al., Simulation of distortions induced by GMAW welding assembly in an arm-plate ferritic steel, Materials Dijon, France, November 2006 (in French).

[7] **, ISO 8015: 2011, Geometrical product specifications-Fundamentals-Concepts, principles and rules.

[8] **, Normalisation Renault Automobiles 01-50-026: 2008, Quality of welding arc bead ground link perimeter (in French).

[9] **, NF EN ISO 14341, Wire electrode and weld deposits for gas shielded arc welding of non alloy and fine grain steels, April (2011).

DOI: 10.3403/30230953

[10] **, NF EN ISO 14175 Gases and gas mixtures for fusion welding and allied processes, June (2008).

[11] **, NFE 60-181, Production Facilities - Conditions of reception, January 2001 (in French).