溶接施工後における入熱・パス間温度及び溶接金属強度の推定方法に関する実験的研究

概要

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An excessive heat input and a high interpass temperature decrease strength and the toughness of the weld metal. However, neither the method of managing the heat input and the interpass temperature nor the method of presuming weld metal strength are established. This research measured the width of the weld bead, the thermo indicator discoloration region, the electric resistance rate, and the hardness by using the portable type hardness meter after constructing the welding.As a result, it became clear the following. 1) The heat input can be presumed by using the width of the weld bead and the electric resistance value. 2) The interpass temperature can be presumed by using the thermo indicator. 3) The strength of the weld metal can be presumed by using the portable type hardness meter.
一般社団法人日本建築学会の論文
2003-03-20