PNC-FMS鋼ラッパ管/SUS316鋼の異材溶接技術開発(III); 溶接部の強度特性評価

Development of Welding Technique Between PNC-FMS Wrapper Tube and SUS316 Steel (III); Evaluation on strength properties of weld zone

成田 健; 鵜飼 重治  ; 皆藤 威二 ; 大塚 智史   ; 藤原 優行

Narita, Takeshi; Ukai, Shigeharu; Kaito, Takeji; Otsuka, Satoshi; Fujiwara, Masayuki

PNC-FMSラッパ管を「常陽」等に適用するために開発した複合ラッパ管(FMS/SUS316丸管溶接ラッパ管形状に加工)の適用可否検討の1つとして、異材溶接部の評価を行った。その結果、熱時効効果も含め、異材溶接部の強度特性は、母材部と同等に扱って特に問題ないことが確認された。

In order to apply to the real wrapper tube of "Joyo", PNC/FMS/SUS316 complex wrapper tube, which are welded at round tubes condition before cold drawing, were developped. In this study, the mechanical properties of complex tube were evaluated. As aresults, the mechanical properties of welded PNC-FMS/SUS316 is equivalent to base metal or more.