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Standardization of New Sliver Probe for Cooling Power Test of Polymer Quenchant

第八届（2011）中国钢铁年会

作者： Osamu Ishiyama Kenichi Higuchi Kazuyuki Shinagawa Kohichi Ooyama Environmental and Process Technology Center Nippon Steel Corporation Yawata Works Nippon Steel Corporation

One of our key tasks in Tobata No. 3 Sinter Plant in Yawata Works, nippon steel Corp., is to reduce the consumption of expensive burnt lime, which is abundantly used to ensure the permeability of sinter beds. Conversely, as shown by many previous studies concerning the binder of raw material for sinter ore, no alternative to burnt lime has yet been developed and implemented. In this report, the development of a new binder that allows us to realize the intensified granulation of a raw material, its performance under lab-examination and the test operation of an actual plant are presented. Lab-examination results showed that the granular index can be improved when dispersant is added compounded together with micro-particles, and the highest effect on productivity improvement was identified in the pot test. An actual plant test was also implemented, targeting a reduction in burnt lime, through the improved permeability of sinter beds and with the intensified granulation of raw materials employing this new binder（micro-particles addition plus dispersant）. It was confirmed that a reduction of approximate 10 kg/t-sinter in burnt lime consumption unit could be achieved as productivity and sinter ore strength were maintained at an approximately constant level and operation stably secured. Meanwhile, the granulation index of the compounding raw materials and the permeability before ignition were retained at levels equivalent to those in the case of the base. Furthermore, synthetic binder consumption unit, including burnt lime and micro-particles additives, was reduced approximately 6 kg/t-sinter despite of adding micro-particle additives amounting to 4.3 kg/t-sinter.

关键词： granulation binder micro-particles

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材料热处理学报 2004年第5期25卷 447-452页

作者： Hideo YOKOTA Katsumi ICHITANI Kazuyoshi YAMAMOTO Hiroyuki IKUMI Yasufumi SUGIURA Michiharu NARAZAKI nippon Oil corporation Yokohama JapanIdemitsu Kosan Co. Ltd. Chiba JapanDaido Chemical Industry Co. Ltd. Osaka JapanSanshin Kagaku Kogyo Co. Ltd. Tokyo JapanNippon Grease Co. Ltd. Osaka JapanUtsunomiya University Utsunomiya Japan

Technical committee for Japanese industrial standard of heat treating oils has studied on the new method for testing cooling power of aqueous quenchants. This method employed the cooling curve test of a new sliver rod probe, which has a metal-sheathed thermocouple at its geometrical center. The experimental study has clarified that this probe has the higher sensitivity and excellent durability. In order to standardize this probe for cooling power test of aqueous quenchants, the repeatability and reproducibility of test results etc. have been studied. D.O.P. (Di-2-ethylthexyl Phthalate) was used as reference quenching fluid for initial calibration and for periodic calibration verification of the probe and system. In addition, 10% brine was used to check the response capability of the probe and system to the sudden change of temperature. These procedures are established according to the experimental investigation. This new test method is going to be built in the revised version of JIS K 2242 "Heat treating oils" as the cooling power test method for aqueous quenchants.

关键词：聚合物淬火剂冷却动力试验冷却曲线银探测器

Possibility of Sea Water as Mixing Water in Concrete

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Journal of Civil Engineering and Architecture 2012年第10期6卷 1273-1279页

作者： Nobuaki Otsuki Tsuyoshi Saito Yutaka Tadokoro Department of lnternational Development Engineering Tokyo Institute of Technology Tokyo 152-8552 Japan Department of Civil Engineering and Architecture Niigata University Niigata 950-2185 Japan nippon steel & Sumikin Stainless steel corporation Hikari 743-8550 Japan

In the near future, fresh water will be very difficult to get and scarce. It is said that in 2025 half of the mankind will live in the areas where fresh water is not enough. Also, UN and WMO (World Meteorological Organization) are predicting five billion people will be in short of even drinking water. Also, in the present, there are some areas where sea water or chloride contained sand are used as mixing water with or without intension. The authors believe that the possibilities of using sea water as mixing water in concrete should be investigated seriously. In this paper, the authors would like to show various possibilities of using sea water as mixing water in RC (reinforced concrete) members. The possibilities are shown as follows: (1) mixed with pozzolanic materials (Blast furnace slag powder, etc.) expecting to fix the free chloride ion; (2) Mixed with corrosion inhibitor; (3) reinforced with stainless steel or corrosion resistant reinforcement; and (4) used in very dry or submerged conditions.

关键词：混凝土拌和海水钢筋混凝土世界气象组织混合水高炉矿渣饮用水 WMO

Development of New Sliver Probe for Cooling Power Test of Polymer Quenchants

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材料热处理学报 2004年第5期25卷 437-442页

作者： Michiharu NARAZAKI Mamoru TAJIMA Shigeru ASADA Katsumi ICHITANI Hideo YOKOTA Mitsugu TANAKA Youichi WATANABE Utsunomiya University Utsunomiya JapanKanagawa University Yokohama JapanNippon Grease Co. Ltd. Osaka JapanIdemitsu Kosan Co. Ltd. Chiba JapanNippon Oil Corporation Yokohama JapanNissho Engineering Co. Ltd. Kobe JapanNissan Motor Co. Ltd. Yokohama Japan

Working group on cooling power test of quenchants of Japanese Heat Treatment Society has studied on the new method for testing cooling power of aqueous quenchants. This method employed the cooling curve test of a new sliver rod probe, which has a metal-sheathed thermocouple at its geometrical center. The experimental study has clarified that the new silver probe has more excellent durability than the JIS silver probe employed for cooling power test of heat treating oils (JIS K 2242) and an aluminum alloy probe. Good repeatability and reproducibility of the cooling curves during polymer quenching have been confirmed. This new method is useful especially for cooling power test of aqueous quenchants used for solution heat treatment of aluminum alloys. This new silver rod probe is expected to be adopted for the revised version of JIS K 2242 as the cooling power test method for aqueous quenchants.

关键词：聚合物淬火剂动力试验冷却曲线银探测器

Estimation of the minimum miscibility pressure for CO_(2)ecrude-oil systems by molecular dynamics simulation

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Petroleum Research 2023年第1期8卷 1-10页

作者： Wuge Cui Yunfeng Liang Yoshihiro Masuda Takeshi Tsuji Toshifumi Matsuoka Haruka Takahashi Department of Systems Innovation School of EngineeringThe University of TokyoTokyo113-8656Japan Fukada Geological Institute Tokyo113-0021Japan JX nippon Oil&Gas Exploration corporation Tokyo100-8163Japan

CO_(2)injection is an effective enhanced oil recovery technique for energy security with the benefits of carbon neutrality.To reach the maximum oil recovery,the miscible condition between CO_(2)and oil needs to be maintained in the reservoir,which requires the operation pressure to be higher than the minimum miscibility pressure(MMP).There are two types of MMPs:the first-contact MMP(FC-MMP)and the multi-contact MMP(MC-MMP).In this study,molecular dynamics simulations were performed for the CO_(2)eoil interface system using two simplified digital oil models:a Bakken dead oil with four lumping components and a live-crude-oil model with 50 types of oil molecules but with no asphaltenes and heavy oil fractions.The vanishing interfacial tension method was used to predict the MMP.Different CO_(2)eoil volume ratios were considered to mimic the different degrees of vaporization.To estimate the MMP accurately and rapidly,the interfacial tension in the low-pressure regime was used for the prediction.Consequently,different MMPs were obtained,where the MMP value increased with increasing CO_(2)eoil volume ratio.FC-MMP can be predicted when the CO_(2)eoil volume ratio is sufficiently high.When the CO_(2)eoil volume ratio was approximately 9e10,MMP was closest to the actual MC-MMP value.The condensing and vaporizing mechanism was also studied at the molecular scale.Because pure CO_(2)was used,only the vaporizing effect on MMP occurred.It was found that the intermediate C2eC6 components have the main effect on the MMP calculation.This study can help to establish a computational protocol to estimate FC-MMP and MC-MMP,which are widely used in reservoir engineering.

关键词： CO_(2)-EOR Minimum miscibility pressure Molecular dynamics simulations Condensing and vaporizing mechanism CO_(2)eoil volume ratio Crude oil

日本制铁针对全球环境问题的应对之策（英文）

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日本制铁针对全球环境问题的应对之策（英文）

第十二届中国钢铁年会

作者： Inoue Akihiko Executive Vice President Nippon Steel Corporation

＜正＞·Short Biography of the Speaker·NSC’s Basic Environmental Policy·NSC’s Contribution to SDGs·Japan’s Reduction Target for Greenhouse Gas Emissions by 2030·Efforts for CO2 Reduction in the Japanese Iron and steel Industry·Energy-saving Investment by the Japanese Iron and steel Industry·New Coke Oven for energy-saving and CO2 reduction·Reduction of Reducing Agent Rate·Energy-saving and CO2 Reduction through High Performance Products

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连铸工艺中弯月面控制的发展

钢铁 2004年第Z1期39卷 482-485页

作者： Wataru Ohashi Takehiko Toh Tooru Matsumiya steelmaking R&D Division Environment & Process Technology Center Steelmaking R&D Division Environment & Process Technology Center Nippon Steel Corporation Japan

在生产效率和板坯质量方面,连铸工艺中的弯月面控制总是十分重要的.为了掌握弯月面控制的发展方面,本文首先概括介绍早期针对生产效率而采用的弯月面控制技术,进而介绍当前为了提高板坯质量而采用的顶部凹槽的弯月面控制技术.80年代,两... 详细信息

在生产效率和板坯质量方面,连铸工艺中的弯月面控制总是十分重要的.为了掌握弯月面控制的发展方面,本文首先概括介绍早期针对生产效率而采用的弯月面控制技术,进而介绍当前为了提高板坯质量而采用的顶部凹槽的弯月面控制技术.80年代,两项关于生产效率的弯月面控制技术发展起来.一项是结晶器状况监测系统,另一项是高速结晶器调宽技术.至于板坯质量方面,最近我们发展了在结晶器周围加上低频交流电磁场的电磁连铸技术(EMC),并且开展了中间实验和连铸生产规模的应用研究.关于EMC技术在弯月面控制的三方面作用得到证实,即结晶器和凝固坯壳之间的软接触,垂直搅拌,焦耳热使初始凝固阶段能适度冷却.

关键词：连铸弯月面凝固电磁场力

Recent Progress on Optical Fiber Connectors for Telecommunication Systems

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光学学报 2003年第S1期23卷 117-118页

作者： Ryo Nagase NTT Photonics Laboratories Nippon Telegraph and Telephone Corporation Wakamiya3-1 Morinosato Atsugi-shi Kanagawa 243-0198 Japan

Various optical fiber connectors have been developed during the 20 years since optical fiber communications systems were first put into practical use. This paper describes the technical background and recent issues re... 详细信息

关键词： for be in of as Recent Progress on Optical Fiber Connectors for Telecommunication Systems on

Technique of Embedding Depth Maps into 2D Images

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Journal of Electronic Science and Technology 2014年第1期12卷 95-100页

作者： Kazutake Uehira Hiroshi Unno Youichi Takashima Kanagawa Institute of Technology Service Evolution Laboratories of nippon Telegraph and Telephone corporation

This paper proposes a new technique that is used to embed depth maps into corresponding 2-dimensional （2D） images. Since a 2D image and its depth map are integrated into one type of image format, they can be treated as if they were one 2D image. Thereby, it can reduce the amount of data in 3D images by half and simplify the processes for sending them through networks because the synchronization between images for the left and right eyes becomes unnecessary. We embed depth maps in the quantized discrete cosine transform （DCT） data of 2D images. The key to this technique is whether the depth maps could be embedded into 2D images without perceivably deteriorating their quality. We try to reduce their deterioration by compressing the depth map data by using the differences from the next pixel to the left. We assume that there is only one non-zero pixel at most on one horizontal line in the DCT block because the depth map values change abruptly. We conduct an experiment to evaluate the quality of the 2D images embedded with depth maps and find that satisfactory quality could be achieved.

关键词： Depth map information embedding,information hiding 3-dimensional image.