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1. 发明专利

JPH10263741A ELECTRODE PLATE FOR ELECTRIC UPSETTER 失效
公开(公告)号：JPH10263741A
公开(公告)日：1998-10-06
申请号：JP6967697
申请日：1997-03-24
申请人： NAGANO PREFECTURE , SUMITOMO COAL MINING , NAGANO TANKO KK
发明人： YAJIMA YOICHI , YAMAMOTO JUNICHI , FURUHATA HAJIME , NISHIYAMA FUMITAKE , TOKITA MASAO , SONODA MASAYUKI , ODAGIRI KICHIJI
IPC分类号： F01L3/24 , B21J9/08 , B21K1/22 , B22F3/14 , B22F5/00 , B22F7/08
摘要： PROBLEM TO BE SOLVED: To improve the service life of an electrode plate for an electric upsetter, and to manufacture a forging of excellent quality. SOLUTION: In an electrode plate 30 for an electric upsetter to heat a forged member 10 from its end face by flowing large current between the forged member 10 and a support plate 20 with one surface of the forged member abutted on and supported by the conductive support plate 20 and with the end face of the forged member 10 pressed against the other surface, the surface against which the forged member 10 is pressed is formed as a ceramic layer 32 consisting of the conductive ceramic layer 32, the surface abutted on the support plate 20 is formed as a metallic layer 34, and a buffer layer 36 to mitigate the thermal stress, etc., is formed between the ceramic layer 32 and the metallic layer 34.

2. 发明专利

JP2001277252A METHOD FOR PRODUCING CAVITY FORMING MOLD, CAVITY FORMING MOLD, AND RESIN MOLDING 失效
公开(公告)号：JP2001277252A
公开(公告)日：2001-10-09
申请号：JP2000092717
申请日：2000-03-30
申请人： SUWA NETSUKOGYO KK , NAGANO PREFECTURE , SUMITOMO COAL MINING , NISSIN KOHKI CO LTD
发明人： MIYASAKA KAZUHISA , MIYASAKA YOSHITO , KARASAWA HITOSHI , FUCHITA TADAMASA , NISHIYAMA FUMITAKE , YAMAMOTO JUNICHI , YAJIMA YOICHI , FURUHATA HAJIME , TOKITA MASAO , MIYAMOTO SHINICHI , TANI MASAHITO
IPC分类号： B29C33/38 , B22F3/105 , B22F3/14 , B22F5/00
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a cavity forming mold for molding a resin which can reduce production costs and improve a yield by implementing mechanical processing such as diamond bite cutting processing precisely even without implementing electroless nickel-phosphorus plating, the cavity forming mold, and a resin molding. SOLUTION: In the method for producing the cavity forming mold 4, a part to be subjected to diamond bite cutting such as a cavity forming surface 44 in the prototype 40 of the mold 4 is formed from a nickel-phosphorus sintered body 15. In the boundary part between the sintered body 15 and a base material, by continuously changing the component ratio between powder 10 for nickel- phosphorus sintering used for discharge plasma sintering and sintered iron powder 44 constituting the base material 44, the sintered body 15 and the base material 44 are joined together slantingly.

3. 发明专利

JPH09268325A APPARATUS FOR CONTINUOUSLY ANNEALING METALLIC STRIP 失效
公开(公告)号：JPH09268325A
公开(公告)日：1997-10-14
申请号：JP1827797
申请日：1997-01-31
申请人： NAKANO SUTANPINGU KK , NAGANO PREFECTURE
发明人： YAMAMOTO HIROYUKI , NISHIYAMA FUMITAKE , YAJIMA YOICHI , YAMAMOTO JUNICHI
IPC分类号： C21D1/74 , C21D9/56 , H01L23/50
摘要： PROBLEM TO BE SOLVED: To effectively remove residual stress in a metallic strip after pressing and to reduce running cost by reducing the consumption of protecting atmospheric gas fed into an annealing furnace. SOLUTION: A continuous annealing apparatus of the metallic strip is provided with the annealing furnace 10 for removing the residual stress in the metallic strip 14 which is formed by pressing a metallic material, by executing the heat treatment while flowing the protecting atmospheric gas for preventing the oxidation of the metallic strip. In this case, ceramic rollers 12, 12a for removing the residual stress and working strain in the metallic strip 14 by pressing the metallic strip 14 from both surfaces while restraining the flow-out of the protecting atmospheric gas from the annealing furnace 10, are arranged near a carry-in hole 22 or a carry-out hole 24 for the metallic strip 14 in the annealing furnace 10.

4. 发明专利

JPH09263465A LIGHTWEIGHT REFRACTORY AND ITS PRODUCTION 失效
公开(公告)号：JPH09263465A
公开(公告)日：1997-10-07
申请号：JP7707896
申请日：1996-03-29
申请人： NAGANO PREFECTURE , NICHIAS CORP , NICHIASU CERATEC KK , TOYONO CERATEC KK , NAPATSUKU KK
发明人： NISHIYAMA FUMITAKE , YAJIMA YOICHI , TSUKAHARA MIKIO , FUKUDA RIKIO , TATEBAYASHI KIYOO , SUZUKI AKIRA
IPC分类号： C04B38/06 , C04B35/64 , C04B35/80 , C04B38/00
摘要： PROBLEM TO BE SOLVED: To improve thermal shock resistance by uniformly dispersing alumina fibers, alumina-silica ceramic fibers and mullite whiskers in a cordierite matrix and uniformly distributing pores. SOLUTION: Powdery refractory stock is prepd. by mixing hydraulic alumina with talc and sericite in a ratio of 60:20:15 to 20:55:15 and 50-90wt.% of the stock in mixed with a fibrous compsn. prepd. by mixing alumina fibers with alumina-silica ceramic fibers and aluminum borate whiskers in a ratio of 85:10:5 to 5:65:30, 3-30wt.% aramide or carbon fibers and water. The resultant slurry in dehydration-molded and fired at 1,350-1,450 deg.C to obtain the objective lightweight refractories contg. the fibrous compsn. uniformly dispersed in a cordierite matrix and having uniformly distributed pores formed by the vanishment of the aramid or carbon fibers.

5. 发明专利

JP2003277133A Method for manufacturing alumina ceramic sintered compact and alumina ceramic sintered compact 审中-公开
标题翻译：制造氧化铝陶瓷烧结方法及氧化铝陶瓷烧结方法
公开(公告)号：JP2003277133A
公开(公告)日：2003-10-02
申请号：JP2002075304
申请日：2002-03-19
申请人： Nagano Prefecture , Taimei Chemicals Co Ltd , 大明化学工業株式会社 , 長野県
发明人： YAJIMA YOICHI , FUJITA TAKAYUKI
IPC分类号： C04B35/115
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a high density, high strength alumina ceramic sintered compact suitable for ceramic tools, wear resistant members, or the like, and the alumina ceramic sintered compact obtained by the manufacturing method. SOLUTION: A discharge plasma sintering method is performed by: applying electric energy produced by a DC pulse generator 5 to sample powder 1 from an electrode 4 through a forming punch 3 while compressing the sample powder 1 with the forming punch 3; and sintering the sample powder 1 for a short time by heat energy from a forming die 2 heated by pulse currents flowing directly to gaps among the sample powder 1 particles and pulse currents flowing through the forming punch 3 to a forming die 2. In such a case, the powder of activated alumina having a crystallite diameter ranging from several to several tens of nanometers is used as the sample powder 1 to obtain the high density, high strong alumina ceramic sintered compact. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种制造适用于陶瓷工具，耐磨构件等的高密度高强度氧化铝陶瓷烧结体的方法以及通过该制造方法获得的氧化铝陶瓷烧结体。解决方案：通过以下方式进行放电等离子体烧结方法：通过成形冲头3对样品粉末1进行压缩，施加由直流脉冲发生器5产生的电能从电极4通过成形冲头3取样粉末1; 并且通过从直接流动到样品粉末1颗粒之间的间隙的脉冲电流加热的成形模2和流过成形冲头3的脉冲电流到成形模具2的热能，将样品粉末1短时间烧结。在这种使用微晶直径为几〜几十纳米的活性氧化铝粉末作为样品粉末1，得到高密度高强度氧化铝陶瓷烧结体。版权所有（C）2004，JPO

6. 发明专利

JP2002043639A CHEMICAL NICKEL PLATING METHOD FOR THERMOELECTRIC SEMICONDUCTOR 失效
公开(公告)号：JP2002043639A
公开(公告)日：2002-02-08
申请号：JP2000254666
申请日：2000-07-22
申请人： SHINKO KOGYO KK , NAGANO PREFECTURE , ORION MACHINERY CO LTD , CERATEC JAPAN CO LTD
发明人： YAJIMA YOICHI , YAMAMOTO JUNICHI , FURUHATA HAJIME , ARAI RYOJI , MINAMI MASAYOSHI , TSUBOI HIRAKI , NAKAMURA YUMIO , YOKOCHI HARUYUKI , SAKAI TOSHIHISA , NISHINOIRI TAKASHI , NAKAMURA HIROKO
IPC分类号： C23C18/18 , C23C18/31 , C23F1/30 , H01L35/16 , H01L35/34
摘要： PROBLEM TO BE SOLVED: To provide a chemical nickel plating method for a thermoelectric element module including P type elements and N type elements mixedly in which P type elements and N type elements are plated simultaneously through one processing. SOLUTION: A thermoelectric element is subjected to alkaline defatting and cleaned with hydrofluoric acid. Subsequently, N type elements are subjected to surface conditioning using CPL based polishing liquid in a first stage etching followed by second stage etching using an etching liquid of nitric acid/acid ammonium fluoride/hydrogen peroxide added with a trace of propylalchol and lauryl sodium sulfate as a countermeasure against gas generation. The N type elements are subjected to removal of oxide film and chemical polishing in the second half of etching process. The P type elements are subjected to dissolution of formed oxide film and chemical polishing. Subsequently, black oxide film formed immediately after etching is cleaned ultrasonically in alkaline solution and removed in desmut process. Finally, chemical nickel plating is performed following to sensitizing/activating process.

7. 发明专利

JPH09263464A LIGHTWEIGHT REFRACTORY AND ITS PRODUCTION 失效
公开(公告)号：JPH09263464A
公开(公告)日：1997-10-07
申请号：JP7707996
申请日：1996-03-29
申请人： NAGANO PREFECTURE , NICHIAS CORP , NICHIASU CERATEC KK , TOYONO CERATEC KK , NAPATSUKU KK
发明人： NISHIYAMA FUMITAKE , YAJIMA YOICHI , TSUKAHARA MIKIO , FUKUDA RIKIO , TATEBAYASHI KIYOO , SUZUKI AKIRA
IPC分类号： C04B28/06 , C04B35/64 , C04B35/80 , C04B38/00 , C04B38/06
摘要： PROBLEM TO BE SOLVED: To improve thermal shock resistance by dehydration-molding a slurry prepd. by mixing specified powdery refractory stock with aluminum borate whiskers, aramide or carbon fibers and water and firing the resultant molded body at a high temp. SOLUTION: Powdery refractory stock is prepd. by mixing 75-25% hydraulic alumina of 3-30μm average particle diameter with 25-75% talc of 3-30μm average particle diameter and 50-90wt.% of the stock is mixed with 5-50wt.% aluminum borate whiskers of 10-30μm major axis size, 3-40wt.% aramid or carbon fibers of 500-2,000μm major axis size, 0.5-8wt.% smectite added if necessary and water. The resultant slurry is dehydration-molded and fired at 1,350-1,450 deg.C to obtain the objective lightweight refractories contg. mullite fibers uniformly dispersed in a cordierite matrix and having uniformly distributed pores formed by the vanishment of the aramide of carbon fibers.

8. 发明专利

JPH09263463A PRODUCTION OF LIGHTWEIGHT REFRACTORY 失效
公开(公告)号：JPH09263463A
公开(公告)日：1997-10-07
申请号：JP7707796
申请日：1996-03-29
申请人： NAGANO PREFECTURE , NICHIAS CORP , NICHIASU CERATEC KK , TOYONO CERATEC KK , NAPATSUKU KK
发明人： NISHIYAMA FUMITAKE , YAJIMA YOICHI , TSUKAHARA MIKIO , FUKUDA RIKIO , TATEBAYASHI KIYOO , SUZUKI AKIRA
IPC分类号： C04B38/06 , C04B28/06 , C04B33/32 , C04B38/00
摘要： PROBLEM TO BE SOLVED: To ensure superior thermal shock resistance, to save energy and to reduce cost by dehydration-molding a slurry prepd. by mixing specified powdery refractory stock with alumina fibers and water and firing the resultant molded body at a high temp. SOLUTION: Powdery refractory stock is prepd. by mixing hydraulic alumina with kaolin, silica flour and mullite powder in a ratio of 60:7:15:18 to 15:20:25:30 and 5-35wt.% alumina fibers and water are added to the stock or smectite is further added by 0.5-8wt.% of the total amt. of the stock and the alumina fibers. They are mixed and the resultant slurry is dehydration-molded and fired at 1,600-1,650 deg.C.

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