Comparing two different arc welding processes through the welding energy: the complete dataset

Published: 21-05-2020| Version 1 | DOI: 10.17632/zgchnmjkj7.1
Contributors:
Gulliver Catão Silva,
Lecino Caldeira,
moisés lagares jr

Description

This raw image data refers to the method proposed in https://rdcu.be/bIa1h (https://doi.org/10.1007/s40430-019-1804-x) for comparing between two welding processes through the statistical study of the effects that two welding energy levels have on the selected output variables of each one. A 2^2 full factorial design of experiment was applied. The process responses are one-dimensional weld bead geometry (penetration, width and reinforcement), two-dimensional weld bead geometry (penetration area and reinforcement area), dilution and weld bead microstructure. Table 3 (in https://rdcu.be/bIa1h) shows the design of experiment and those assessed weld bead microstructure in terms of percentage of the PF(G) - primary grain boundary ferrite; PF(I) - polygonal ferrite; AF - acicular ferrite; FS(NA) - nonaligned side-plate ferrite and FS(A) - aligned side-plate ferrite; all that percentage values obtained from the analysis of this dataset. The statistical analysis showed that the methodology presented is capable of determining objective parameters (statistically based) which can be useful in comparing and selecting a suitable process for a specific application. The comparison of the results between fluxed core arc welding (FCAW) and shielded metal arc welding processes reveled that both produced weld seams with the same penetration. Therefore, in this study, it was recommended the selection of the FCAW process at low energy level, which was able to produce larger width weld seams and improved microstructure quality, saving 30% of the energy consumption.

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