隅肉溶接に対する溶込みの算定(第 II 報) : 深い溶込みの隅肉溶接について

概要

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In the 1st report, fundamental formulas and diagrams for welding penetration have been obtained using idealised models of a moving point heat source, and practical application to shallow penetration of fillet weld was discussed. In this report, the fundamental penetration theory is applied practically to deep fillet weld as follows : (1) Assuming geometrically a half ellipse of fused zone in a fillet weld cross-section, the actual penetration (d^^-, d_0. and p; see Fgi. 4) of a fillet weld is represented by the following approximate formulas as a function of theoretical penetration (d) derived from the point-source theory : [numerical formula] [numerical formula] [numerical formula] where, h is a given fillet size, and d is obtainable from the given welding condition and material. (see report I) (2) Reduction rate of fillet size (h_e/h) due to effective penetration (P) is also given by the following approximate formula : [numerical formula] where, h_e is the reduced fillet size, and h is the required nominal fillet size. (3) Utilities of the formulas are experimentally confirmed by submerged are welding of Tee-joints. (4) The theory of both-sides penetration of Tee-joint welded simultaneously which was presented in the 1st report is also confirmed experimentally for the deep fillet welds by submerged are welding.
社団法人溶接学会の論文
1969-08-25