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摘要
This work uses a methodology proposed by Experimental Design theories to quantify the effect of heat input, flange thickness and web thickness on angular distortion in welded T-joints by the MIG/MAG process with short-circuit transfer mode. The analysis of Variance identified as significant the effect of the heat input, the thickness of the flange and the interaction of the factors of heat input and thickness of the flange. Minimum distortions were observed for the combination of higher heat input and lower flange thickness, and for lower heat input and higher flange thickness. Additionally, it was demonstrated that the temperature gradient in the flange does not determine the maximum angular distortion, but the maximum temperature reached in the lower surface of the flange, with maximum angular distortion obtained for a temperature reached of 425 degrees C in point in the lower surface of the flange and parallel to the edge of the weld bead.
- 出版日期2017-6
