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材料热处理学报 2004年第5期25卷 480-485页

作者： tsuyoshi sugimoto Youichi Watanabe Nissan Motor Co. Ltd. 6-1 Daikoku-cho Tsurumi Yokohama JapanNissan Motor Co. Ltd. 6-1 Daikoku-cho Tsurumi Yokohama Japan

To minimize quenching distortion and dispersion, carburizing and quenching process conditions must be optimized; this includes the parts racking design used for quenching. We investigated some factors affecting carburized quenching distortion with an experiment using a hypoid gear having a shaft and with numerical simulation methods. The experimental results and those obtained from simulation were generally in agreement. Focusing on the surface temperature distribution in the gear, we studied quenching distortion characteristics in terms of changes in tooth profile and helix deviation. In our experiments, distortions occur during quenching in 373 K oil after austenitized temperature treatments conducted with various attitudes. We calculated the distortions by simulating the carburized oil-quenching process for the hypoid gear. Our results show large differences between the cooling rates of the tooth toe, middle section, and heel edges, and these greatly influence the change in tooth profile and helix deviation. We found that reducing the differences in temperatures on the gear surfaces during quenching is most important for minimizing the quench distortion of the hypoid gear.

关键词：淬火变形螺旋偏差外形偏差冷却曲线传热系数准双曲面齿轮

Visualization of Vapor Film Collapse Behavior with Complexity on Quenching Process by Cellular Automaton

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Journal of Mechanics Engineering and Automation 2023年第1期13卷 7-15页

作者： tsuyoshi sugimoto Mechanical Systems Engineering Department National Institute of TechnologyAsahikawa CollegeAsahikawa 071-8142Japan

The vapor film collapse that occurs in the quenching process is complicated and affects the heat treatment quality and its *** order to incorporate it into the MBD(Model Based Development)technology required these days,it is necessary to predict the quality of heat treatment by CAE(Computer Added Engineering),shorten the product development *** calculation of the vapor film collapses in a simple and practical time in order to improve the product ***,in the past,in order to formulate the vapor film collapse on a simulation,it was necessary to perform a very large amount of computational calculation CFD(computational fluid dynamics),which was a problem in terms of computer resources and the model of vapor film *** addition,this phenomenon has a complexity behavior of the phenomenon in iterative processing,which also complicates the *** this study,the vapor film collapse phenomenon is easily visualized using self-organized cellular automaton simulation which includes the phenomena of“vapor film thickness and its fluctuation”,“flow disturbance”,“surface step of workpiece”,and“decrease of cooling due to r shape of surface”.The average cooling state and repeated fluctuations of the cooling state were reproduced by this method.

关键词： Quenching cellular automaton vapor film collapse complexity.

Heat Treatment Simulation for Low Pressure Hyper Carburizing Process

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Journal of Mechanics Engineering and Automation 2019年第1期9卷 33-39页

作者： tsuyoshi sugimoto Dong-Ying Ju Nissan Motor Co. Ltd.AtsugiKanagawaJapan Saitama Institute of Technology FukayaSaitamaJapan

Carburizing heat treatment is well used to increase the strength of gears and automobile drivetrain *** very high contact fatigue strength is required,hyper carburizing or carbonitriding is well used to improve the surface hardness and tempering softening *** saturate carburizing as called hyper carburizing can be used in a conventional ordinary carburizing furnace and investment of new gas supply equipment is unnecessary,while there are problems such as controlling precipitation of cementite and securing hardenability of the surface,***,problems such as secondary precipitation to control the material micro structure,its quality prediction method becomes *** recent years the low pressure carburizing method has been widely used and the possibility of making hyper carburizing in low cost has been ***,when hyper carburizing is performed by low pressure carburizng,reticulated cementite occurs at the edge of the part,there is a problem such as local increase of carbon concentration distribution and *** this study,we tried to formulate precipitation when super carburizing was performed on steel parts using a low pressure carburizing furnace,formulated the surface hardness distribution,and tried to calculate the hardness and cementite precipitation size *** method is used to obtain the physical property values,graphite of an intermediate product was precipitated from the low pressure carburizing atmosphere on the surface layer,and it was assumed that carburization occurred *** supersaturated carbon precipitates as cementite,the growth amount of the precipitate is *** deposition rate was estimated by comparing the actual measurement with the calculated *** hardness is determined by the sum of the hardness of the precipitate and the hardness of the parent phase part,the hardness distribution was *** a result,the hardness distribution at the time of high c

关键词： Heat treatment simulation low pressure carburizing hyper carburizing cementite precipitation

用计算机模拟法对渗碳的准双曲面主动锥齿轮淬火变形的关键因素的评定

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綦齿传动 2006年第2期 15-20页

作者： tsuyoshi sugimoto Youichi Watanabe 翁远松（译）赵世鑫（校） Nissan Motor Co. Ltd.6-1Daikoku-choTsurumiYokohamaJapan 不详

为使淬火变形和偏差减至最小．渗碳和淬火工艺必须最佳化。这当中已包括零部件用于淬火的挂装设计。作者以准双曲面主动齿轮为例，用数字模拟方法对一些影响渗碳淬火变形的因素进行了研究和试验。试验结果与模拟方法获得的结果是一致的... 详细信息

为使淬火变形和偏差减至最小．渗碳和淬火工艺必须最佳化。这当中已包括零部件用于淬火的挂装设计。作者以准双曲面主动齿轮为例，用数字模拟方法对一些影响渗碳淬火变形的因素进行了研究和试验。试验结果与模拟方法获得的结果是一致的。重点是对齿轮表面温度分布的研讨，作者根据齿形的变化和螺旋线偏差研究了淬火变形特性。在试验中，以各种状态的处理温度奥氏体化后，在100℃的油中淬火时均出现变形。作者用准双曲面齿轮通过模拟渗碳油淬过程来预测变形。结果表明，在齿顶、齿中部和齿根边缘的冷却率间差异很大，而这些又很大程度上影响着齿形和螺旋线偏差的变化。作者发现在淬火期闻，降低齿轮表面的温差．对于降低准双曲面齿轮的淬火变形是极为重要的。

关键词：淬火变形螺旋线偏差齿形偏差模拟冷却曲线传热系数准双曲面齿轮

New 14-mm diameter Niti-S biliary uncovered metal stent for unresectable distal biliary malignant obstruction

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World Journal of Gastrointestinal Endoscopy 2018年第1期10卷 16-22页

作者： Masataka Kikuyama Naofumi Shirane Shinya Kawaguchi Shuzou Terada tsuyoshi Mukai Ken sugimoto Departmentof Gastroenterology Komagome Metropolitan Cancer and Infectious Diseases Center Komagome Hospital Department of Gastroenterology Shizuoka General Hospital Department of Gastroenterology Gifu Municipal Hospital Department of Gastroenterology Hamamatsu University School of Medicine

AIM To investigate whether an uncovered self-expandable metal stent(UCSEMS) with a large diameter could prevent recurrent biliary obstruction(RBO).METHODS Thirty-eight patients with malignant biliary obstruction underwent treatment with an UCSEMS with a 14-mm diameter(Niti-S 14). Retrospectively, we evaluated technical and functional success rate, RBO rate, time to RBO, survival time, and adverse events in these *** Stent placement success and functional success were achieved in all patients. Two patients(5.3%) had RBO due to tumor ingrowth or overgrowth. The median time to RBO was 190(range, 164-215) d. The median survival time was 120(range, 18-502) d. The 6-mo non-RBO rate was 91%. Other adverse events other than RBO occurred as follows: Acute cholecystitis, post-ERCP pancreatitis, hemobilia, and fever without exacerbation of liver injury, and liver abscess in 4(10.3%), 3(7.9%), 2(5.3%), 1(2.6%), and 1(2.6%), respectively. Migration of the stents was not *** Niti-S 14 is considered to be a preferable metal stent because of a low rate of RBO with no migration.

关键词： Metal stent Malignant biliary obstruction Pancreatic cancer Migration Pancreatitis Bile duct cancer Overgrowth Recurrent biliary obstruction Ingrowth Adverse event

New acetogenin katsuurallene from Laurencia saitoi collected from Katsuura, Japan

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Natural Products and Bioprospecting 2022年第1期12卷 121-127页

作者： Yu Minamida Hiroshi Matsuura Takahiro Ishii Miyu Miyagi Yuto Shinjo Kosuke Sato Takashi Kamada Yoshihiro Mihara Iwao Togashi Keisuke sugimoto tsuyoshi Abe Norio Kikuchi Minoru Suzuki Advanced Course of Applied Chemistry National Institute of TechnologyAsahikawa CollegeShunkodai 2-2-1-6AsahikawaHokkaido 071-8142Japan Department of Materials Chemistry National Institute of TechnologyAsahikawa CollageShunkodai 2-2-1-6AsahikawaHokkaido 071-8142Japan Department of Biosciences and Biotechnology Faculty of AgricultureUniversity of the Ryukyus1 SenbaruNishiharaOkinawa 903-0213Japan Department of Materials and Life Science Faculty of Science and TechnologyShizuoka Institute of Science and Technology2200-2 ToyosawaFukuroiShizuoka 437-8555Japan Department of Medicinal Chemistry Faculty of Pharmaceutical SciencesHokkaido University of ScienceMaeda 715-4-1Teine-kuSapporoHokkaido 006-8590Japan The Hokkaido University Museum Hokkaido UniversityN10 W8Kita-kuSapporoHokkaido 060-0810Japan Coastal Branch of Natural History Museum and Institute Chiba123 YoshioKatsuuraChiba 299-5242Japan Department of Life Science Graduate School of Engineering ScienceAkita University1-1 Tegatagakuen-machiAkita 010-8502Japan

We examined the chemical constitution of the red alga Laurencia saitoi Perestenko,collected from Katsuura,Boso Peninsula,Chiba Prefecture,*** specimen produced a new polyhalogenated acetogenin,named katsuural-lene(1),which structure was determined by the spectral methods,along with known diterpene,deoxyparguerol(2)and triterpene,thyrsiferol(3).In this paper we describe the structural elucidation of katsuurallene together with some biological activities.

关键词： Laurencia Rhodomelaceae Acetogenin Triterpene Diterpene Biological activity