428 鋼管の高周波ろう付圧接における接合条件と継手強度の関係(OS 溶接・接合)

概要

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The carbon steel pipes for ordinary piping whose joints apt to have steps and stress concentration because of low accuracy for diameters and thickness, were pressure-welded using brazing filler by high frequency heating. Effect of the fillet produced at the step which is made by brazing filler extruded from the interface of joints on the joint strength, was examined by tensile tests and numerical analysis. According to tensile test, the strength of joints increased as fillet enlarged. It was confirmed by SEM/EDS analysis that brazing filler was extruded from the interface of joints, and different size of fillet was produced in accordance with the thickness of brazing filler. It was revealed that brazing filler filled the step and that the fillet relaxed the stress concentration to increase the strength of steel-pipe joints made by pressure welding using brazing filler at the joint interface.
一般社団法人日本機械学会の論文
2000-11-24