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Magnetic Properties and Workability of 6.5% Si Steel Sheet Manufactured by Siliconizing Process

Journal of Materials Science & Technology 2000年第2期16卷 137-140页

作者： Koichiro fujita, Misao Namikawa and Yoshikazu Takada (Materials and Processing Research Center NKK corp., 1-1 Minamiwatarida-cho, Kawasaki-ku Kawasaki-shi, 210-0855 Japan) Materials and Processing Research Center NKK corp. 1-1 Minamiwatarida-cho Kawasaki-ku Kawasaki-shi 210-0855 Japan

A siliconizing process to manufacture 6.5% Si steel sheet has been developed. Electric components, such as transformers and reactors are made easily from 6.5% Si steel sheet. However, improved workability is desirable to increase the applications. Therefore the improvement of workability of 6.5% Si steel sheet was investigated, and the results were obtained as follows: (a) workability of 6.5% Si steel sheet is deteriorated by grain boundary oxidization, (b) grain boundary oxidization can be restrained by the addition of C. Workability and magnetic properties of 6.5% Si steel sheet with C addition are discussed. Furthermore, it was found that the workability of high Si steel sheet was improved remarkably by varying the Si content gradient along the thickness without deterioration of high frequency magnetic properties. This newly developed magnetic gradient high Si steel sheet is also discussed.

关键词： Si Steel Sheet Manufactured by Siliconizing Process Magnetic Properties and Workability of 6.5 St

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Low Activation Material Design Methodology for Reduction of Radio-Active Wastes of Nuclear Power Plant

Low Activation Material Design Methodology for Reduction of ...

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Ninth China-Japan Symposium on Materials for Advanced Energy Systems and Fission & Fusion Engineering Jointed with CAS-JSPS Core-university Program Seminar on Fusion Materials, System and Design Integration

作者： Akira HASEGAWA Manabu SATOU Nagao KAKINUMA Shuhei NOGAMI Masaharu KINNO Katsumi Hayashi Department of Quantum Science and Energy Engineering Tohoku University Sendai 980-8579 Japan Department of Quantum Science and Energy Engineering Tohoku University Sendai 980-8579 Japan Graduate School of Engineering Tohoku University Sendai 980-8579 Japan Department of Quantum Science and Energy Engineering Tohoku University Sendai 980-8579 Japan fujita corp. atsugi Japan Hitachi-GE Nuclear Energy Ltd. Hitachi Japan

Most of the concrete shielding walls and pipes around a reactor pressure vessel of a light water reactor become low level radioactive waste at decommission phase because they contain radioactive nuclides by thermal-neutron irradiation during its *** radioactivity of some low level radioactive wastes is close to the clearance *** is very desirable in terms of life cycle cost reduction that the radioactivity of those low level radioactive wastes is decreased below clearance *** case of light water reactors,however,methodology of low activation design of a nuclear plant has not been established yet because the reactor is a large-scale facility and has various structural *** objectives of this work are to develop low activation material design methodology and material fabrication for reduction of radio-active wastes of nuclear power plant such as reinforced *** realize fabrication of reduced radioactive concrete,it is necessary to develop(1)the database of the chemical composition of raw materials to select low activation materials,(2)the tool for calculation of the neutron flux and the spectrum distribution of nuclear plants to evaluate radioactivity of reactor components,(3)optimization of material process conditions to produce the low activation cement and the low activation *** of the data base development,calculation tools and trial production of low activation cements will be presented.

关键词： Radio Active Low Activation Material Design Methodology for Reduction of Radio-Active Wastes of Nuclear Power Plant

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钢结构中日设计对比

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工程建设标准化 2016年第12期 17-17页

作者：冯德民日本fujita corp

首先介绍了日本钢结构的发展状况，日本建筑施工面积中钢结构占比约40％，是钢筋混凝土面积的2倍；在层数上，15层以下的钢结构占比95％，2层以下为58％，由于居住舒适度等原因，日本几乎没有发展高层钢结构住宅。其次，介绍了日本抗震... 详细信息

首先介绍了日本钢结构的发展状况，日本建筑施工面积中钢结构占比约40％，是钢筋混凝土面积的2倍；在层数上，15层以下的钢结构占比95％，2层以下为58％，由于居住舒适度等原因，日本几乎没有发展高层钢结构住宅。其次，介绍了日本抗震设计的流程，对于60米以下结构，主要按照结构高度，设计分途径1，2，3三个途径，其中途径3除容许应力计算外，还要进行二次设计，即结构整体的静力弹塑性保有耐力确认；超过60米的超高层建筑，必须采用动力时程反应分析，

关键词：钢结构住宅抗震设计混凝土面积时程反应分析居住舒适度静力弹塑性超高层建筑建筑施工

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