隅肉溶接に対する溶込みの算定(第 1 報) : 溶込みの基礎理論ならびに浅い溶込みの隅肉溶接について
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概要
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Fundamental equations and diagrams of welding penetration are obtained from idealised models of a moving point heat source, and practical application of the theoretical penetration is investigated to predict actual penetration of a fillet welding joint as follows : (1) Relationship between welding conditions represented by dimentionless function N and theoretical penetration represented by dimentionless function D is given by the following equations with common parameter ρ : [numerical formula] N-D diagram obtained from the two equations above is presented as shown in Fig. 2. (2) Temperature distribution of a infinite plate being welded on both sides simultaneously is also investigated, and the relationships of welding conditions (N), plate thickness (T) and theoretical penetration (D) are given by the following approximate dimensionless equations : [numerical formula] N-D-T diagram and D-T diagram are obtained from the three equations above as shown in Fig. 4 and Fig. 5 respectively for practical application to simultaneous fillet welding on both sides of a Tee-joint. (3) Relationship between norminal penetration (d^^^-) of actual fillet weld and theoretical penetration (d) obtained from N-D diagram or N-D-T diagram is given by the following approximate equation (see Fig. 7 and Fig. 8) : [numerical formula] where, h is leg size of a fillet weld. (4) Relationships between nominal penetration (d^^^-) and effedtive penetration (p) of a fillet welding joint (see Fig. 6) are also given approximately as follows : [numerical formula] where, Ψ=p/h, δ=d^^^-/h Ψ-δ diagrams are presented to predict effective penetration as shown in Fig. 13. (5) The utility of the results shown above is experimentally confirmed by automatic contact arc welding of Tee-joint. (see Figs. 9,10 and 13) The present paper discusses mainly on shallow penetration of fillet welds, the deep penetration will be discussed in 2nd report.
- 社団法人溶接学会の論文
- 1969-04-25
著者
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- 隅肉溶接に対する溶込みの算定(第 1 報) : 溶込みの基礎理論ならびに浅い溶込みの隅肉溶接について