Simplified method for predicting and preventing welding joints induced transverse deformation in plates
2018
Verdins, G., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Kleinbergs, V., Latvia | Ziemelis, M., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
The study deals with the problems that occur when welding flat parts with the pre-bending method. A simplified calculation method has been proposed to calculate the transverse deformation of 4 ... 10 mm thick non-alloy steel plates, for which the standard joints with the MAG method are welded. Experimentally transverse deformation for samples with similar sizes and welding technologies are determined. An analysis of the plate deflection in the heat affected zone and its parameters has been performed. It was determined, in which direction, in what place and to what extent the welded parts should be bent to obtain the required shape after welding and cooling. The developed methodology allows obtaining low-time and computational resources to obtain the information needed to minimize complex welds, if there is no increased requirement to ensure that the parts are flattened.
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