9Cr-ODS鋼の量産技術開発; ODS鋼量産用大型アトライター(PATTRIODS)の開発とODS鋼試作試験

Mass production technology development of 9Cr-ODS steel; Development of Prototype large ATTRItor for mass production of ODS steel (PATTRIODS) and test production

岡 弘   ; 丹野 敬嗣  ; 矢野 康英  ; 大塚 智史   ; 皆藤 威二 ; 舘 義昭  

Oka, Hiroshi; Tanno, Takashi; Yano, Yasuhide; Otsuka, Satoshi; Kaito, Takeji; Tachi, Yoshiaki

ODS鋼被覆管の量産技術開発の一環として、量産用メカニカルアロイング装置である大型アトライターPATTRIODSを開発した。PATTRIODSの粉末処理量は従来の3倍の30kgとし、メカニカルアロイング中の酸素量を制御するため、粉砕タンク及び粉末回収容器まで真空-Arガス置換が可能な機構とした。PATTRIODSを使用してODS鋼の試作試験を実施した結果、既存小型アトライターと同レベルの酸素量制御性を有することがわかった。

As part of the development of mass production technology for ODS steel cladding tubes, a large attritor ball-mill PATTRIODS (Prototype large ATTRItor for mass production of ODS steel) was developed, which is a mechanical alloying device for mass production. The powder amount of throughput of PATTRIODS is 30 kg, which is three times the conventional small type attritor. In order to control the amount of oxygen during mechanical alloying, inert gas replacement capability for the pulverization tank and the powder collecting container is adopted. The production test of ODS steel using PATTRIODS revealed that PATTRIODS had the same level of oxygen controllability as the existing small type attritor.