第5回
多機能レーザ溶接ヘッドの開発(第1報)-水中レーザ溶接の基本特性評価-
著者:
河野 渉,Wataru KONO,千田 格,Itaru CHIDA,三浦 崇広,Takahiro MIURA,依田 正樹,Masaki YODA,牧野 吉延,Yoshinobu MAKINO,日野 武久,Takehisa HINO
発刊日:
公開日:
キーワードタグ:
Multifunction laser welding head has been developed. The head is able to perform not only underwater laser welding as repair, but also laser peening as preventi ve maintenance and laser ultrasonic testing as inspection. Laser transmission test with multifunction laser welding head and optical fiber was carried out. The result showed that laser power needed for welding was transmitted without any damage to them. Under water laser welding onto EDM slits with this welding head w as carried out. EDM slits were...
英字タイトル:
Development of Multifunction Laser Welding Head (1) - Evaluation of Under Water Laser Welding with Multifunction Laser Welding Head -
第5回
多機能レーザ溶接ヘッドの開発(第2報)-レーザピーニングによる応力改善性評価-
著者:
千田 格,Itaru CHIDA,河野 渉,Wataru KONO,三浦 崇広,Takahiro MIURA,向井 成彦,Naruhiko MUKAI,依田 正樹,Masaki YODA
発刊日:
公開日:
キーワードタグ:
Multifunction laser welding head has been developed. The head is able to perform not only underwater laser welding as repair, but also laser peening as preventive maintenance and laser ultrasonic testing as inspection. By using the effect of color aberration with optics, laser beam was focused to the ideal spot size on each process. Laser p eening was performed on the material surface with the developed head, and stress improvement ability was confirmed....
英字タイトル:
Development of Multifunction Laser Welding Head (2) - Stress Improvement by Laser Peening Technology -
第5回
多機能レーザ溶接ヘッドの開発(第3報)-レーザ超音波法による表面検査技術の開発-
著者:
三浦 崇広,Takahiro MIURA,河野 渉,Wataru KONO,千田 格,Itaru CHIDA,吉田 昌弘,Masahiro YOSHIDA,山本 智,Satoshi YAMAMOTO,依田 正樹,Masaki YODA,落合 誠,Makoto OCHIAI
発刊日:
公開日:
キーワードタグ:
Multifunction laser welding head has been developed. The head is able to perform not only underwater laser welding as repair, but also laser peening as preventive maintenance and laser ultrasonic test ing as inspection. For inspection with multifunction laser welding head, a new method of visualized weld defects in water by laser-ultrasonics has developed. To detect and visualize a surface of weld metal with welding bead, the authors have developed a new detection method by leaky wave induced by interactio...
英字タイトル:
Development of Multifunction Laser Welding Head (3) - Surface Inspection Technique by Laser-ultrasonics -
第7回
水中レーザによるテンパービード溶接技術の開発
著者:
福田 健,Takeshi FUKUDA,頓宮 雄一,Masataka TAMURA,依田 正樹,Yuichi TONGU,森島 康雄,Wataru KONO,田村 雅貴,Masaki YODA,河野 渉,Minoru OBATA,小畑 稔,Yasuo MORISHIMA
発刊日:
公開日:
キーワードタグ:
Toshiba has developed temper bead welding by under water laser welding as SCC counter measure for aged components in PWR and BWR nuclear power plants. Temper bead welding by under water laser welding technique recovers toughness of low alloy steel reactor vessel by employing proper the number of cladding layers and their welding conditions. In th is report, some evaluation results of material characteristics of temper bead welded low alloy steel are presented....
英字タイトル:
Development of temper bead welding by under water laser welding
第8回
水中レーザ溶接装置の開発
著者:
徳永 泰明,Yasuaki TOKUNAGA,千田 格,Itaru CHIDA,椎原 克典,Katsunori SHIIHARA,田村 雅貴,Masataka TAMURA,福田 健,Takeshi FUKUDA,前原 剛,Takeshi MAEHARA,依田 正樹,Masaki YODA
発刊日:
公開日:
キーワードタグ:
Toshiba has developed various laser-based maintenance and repair technologies and already applied to nuclear power plants. Laser beam welding technology has been developed as an SCC cou ntermeasure for aged components in PWRs and BWRs. This technology can also be used underwater by blowing shielding gas for creating a local dry area. This welding equipment has damage d etecting function of optical elements such as windows and optical fiber cables, and the laser beam spot position and diameter can be adjust...
英字タイトル:
Development of Underwater Laser Beam Welding Equipment
第10回
水中レーザ肉盛溶接工法ガイドラインの概要
著者:
市川 博也,Hiroya ICHIKAWA,依田 正樹,Masaki YODA,元良 裕一,Yuichi MOTORA
発刊日:
公開日:
キーワードタグ:
It is known that stress corrosion cracking (SCC) might occur at the weld of a reactor pressure vessel or core internals. Underwater laser beam clad welding for mitigation of SCC has been already established and the guideline “Underwater laser beam clad welding” was published. Moreover, the guideline “Seal welding” was also published as a repair method for SCC. In addition to these guidelines, the guideline “Underwater laser beam repair welding” was newly published in November, 2012 for the repair weldi...
英字タイトル:
Summary of the guideline on underwater laser beam repair welding