著者

押川 巧 船越 義彦 今岡 宏志 井口 将秀 櫻井 武尊 中平 昌隆

出版者

公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)

雑誌

低温工学 (ISSN:03892441)

巻号頁・発行日

vol.54, no.6, pp.452-458, 2019-11-20 (Released:2019-11-29)

参考文献数

13

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High nitrogen austenitic stainless steel forgings with heavy thickness and complex configuration are used for the ITER TF coil case. In the forging process for high nitrogen austenitic stainless steel, it is generally difficult to simultaneously obtain good ultrasonic attenuation, the required mechanical properties and the desired near-net shape. Accordingly, JCFC undertook development of an innovative forging method to form the near-net shape of the product, through consideration of possible methods and laboratory testing. By applying JCFC’s innovative method in trial manufacturing commissioned by QST, it was confirmed that the resulting forgings had material properties that satisfy ITER requirements and were also formed into a near-net shape. Subsequently, JCFC manufactured the actual forgings.

著者

井口 将秀 千田 豊 中嶋 秀夫 小川 剛史 片山 義紀 小方 大成 峯村 敏幸 宮部 圭介 渡海 大輔 新見 健一郎

出版者

公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)

雑誌

低温工学 (ISSN:03892441)

巻号頁・発行日

vol.47, no.3, pp.193-199, 2012-03-25 (Released:2012-07-04)

参考文献数

11

被引用文献数

5 2

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The Japan Atomic Energy Agency (JAEA) has conducted activities in Japan since March 2009 in order to establish the manufacturing procedure for the ITER toroidal field (TF) coil structures. A TF coil structure consists of a TF coil case and components. The activities include ensuring that the structural materials and welding procedure comply with the Japan Society of Mechanical Engineers (JSME) code for fusion devices, and demonstrating the manufacturing method and procedures using full-scale segments of the TF coil structure. From the results of these activities, the JAEA confirmed that the quality control method of actual series TF coil structures complies with the JSME code. Therefore, the quality of structural materials and weld joints using gas tungsten arc welding (GTAW) satisfy the ITER requirements. In addition, the JAEA obtained knowledge regarding the welding deformation of the actual TF coil structures. This paper describes the results of these compliance and development activities for ITER TF coil structures.