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1. 发明专利

JPH0525608A NI FERRITE POWDER FOR THERMAL SPRAY COATING AND INSOLUBLE COATED ELECTRODE 失效
公开(公告)号：JPH0525608A
公开(公告)日：1993-02-02
申请号：JP20126091
申请日：1991-07-15
申请人： MITSUBISHI MATERIALS CORP , TOKAI CARBON KK
发明人： SHIBUTA DAISUKE , SAKAI YOICHI , INOUE HIDEO , TAMADA OKIFUMI
IPC分类号： C23C4/10 , C25B11/04
摘要： PURPOSE:To provide the Ni ferrite powder for thermal spray coating having high quality and the insoluble coated electrode which is formed by thermally spraying this powder onto the surface of a metallic base body and has excellent stability and durability performance at a low cost. CONSTITUTION:This Ni ferrite powder for thermal spray coating having 5 to 150mum grain sizes is obtd. by pulverizing the dry solid of fine particles codeposited from an aq. soln. in which a soluble ferric salt and soluble nickel salt coexist. The insoluble coated electrode is obtd. by thermally spraying the above-mentioned Ni ferrite powder for thermal spray coating to the surface of the metallic base body.

2. 发明专利

JPH0525675A MAGNETITE POWDER FOR THERMAL SPRAY COATING AND INSOLUBLE COATED ELECTRODE 失效
公开(公告)号：JPH0525675A
公开(公告)日：1993-02-02
申请号：JP20125991
申请日：1991-07-15
申请人： MITSUBISHI MATERIALS CORP , TOKAI CARBON KK
发明人： SHIBUTA DAISUKE , SAKAI YOICHI , INOUE HIDEO , TAMADA OKIFUMI
IPC分类号： C01G49/08 , C25B11/04
摘要： PURPOSE:To provide low-cost high-quality magnetite powder for coating by thermal spraying and an insoluble coated electrode having excellent stability and durability obtd. by thermally spraying the magnetite powder on the surface of a metal substrate. CONSTITUTION:Fine particles coprecipitated from an aq. soln. contg. soluble ferric and ferrous salts are dried and the resulting solid body is pulverized to produce magnetite powder of 5-150mum grain size for coating by thermal spraying. This magnetite powder is thermally sprayed on the surface of a metal substrate to obtain an insoluble coated electrode.

3. 发明专利

JPH0158126B2 失效
公开(公告)号：JPH0158126B2
公开(公告)日：1989-12-08
申请号：JP21925685
申请日：1985-10-03
申请人： TOKAI CARBON KK
发明人： TAMADA OKIFUMI , SAGAWA KATSUJI , OKAJIMA KYOMA
IPC分类号： C04B35/52 , C01B31/04

4. 发明专利

JPH04160058A PRODUCTION OF INSOTROPIC CARBONACEOUS MATERIAL 失效
公开(公告)号：JPH04160058A
公开(公告)日：1992-06-03
申请号：JP28366990
申请日：1990-10-22
申请人： TOKAI CARBON KK
发明人： TAMADA OKIFUMI , MATSUZAKI HIROKAZU
IPC分类号： C04B35/52 , C01B31/02
摘要： PURPOSE:To shorten a time for a kneading stage and to enhance productivity by kneading and treating coke powder for a raw material and a pitch binder while adding the specified organic high polymer substance, and burning the kneaded material after molding it by a rubber press. CONSTITUTION:Coke powder for a raw material and a pitch binder are kneaded and treated to regulate the volatile matter. The kneaded material is pulverized to obtain secondary particles. After these secondary particles are molded by a rubber press, the molded body is burned. In this method, the aimed isotropic carbonaceous material is obtained by adding the organic high polymer substance which has properties so that it is decomposed at the kneading temp. at a time for kneading treatment and hydrochloric acid is removed. As the most effective conditions for the aim, polyvinyl chloride or polyvinylidene chloride is used for the organic high polymer substance and added in a range within 0.3-2.0wt.% for coke of the raw material. When the loadings in this case are less than 0.3wt.%, the shortening effect of the kneading time is not obtained. Further when the loadings exceed 2.0wt.%, the characteristics such as strength and elasticity of the obtained isotropic carbo-naceous material are deteriorated.

5. 发明专利

JPH0244640B2 失效
公开(公告)号：JPH0244640B2
公开(公告)日：1990-10-04
申请号：JP24874385
申请日：1985-11-08
申请人： TOKAI CARBON KK
发明人： WATANABE YOSHIHIRO , UCHIDA SHIGERU , TAMADA OKIFUMI
IPC分类号： B30B5/02 , B30B11/00

6. 发明专利

JPS62110899A RUBBER PRESS FORMING METHOD 失效
公开(公告)号：JPS62110899A
公开(公告)日：1987-05-21
申请号：JP24874385
申请日：1985-11-08
申请人： TOKAI CARBON KK
发明人： WATANABE YOSHIHIRO , UCHIDA SHIGERU , TAMADA OKIFUMI
IPC分类号： B30B5/02 , B30B11/00
摘要： PURPOSE:To obtain an isotropic forming body with good yield by fitting a porous metal die on the outer face of the rubber container having a hollow recessed part at the center part, by deaerating the inner part with pressure reduction by filling the forming powder and by performing a hydrostatic pres sure by removing the metal die for shape keeping. CONSTITUTION:A forming powder 9 is closely filled by setting a porous metal die 7 and the die 8 for shape keeping to the rubber container 2 having a hollow recessed part. The gaseous component in the forming powder is deaerated by reducing pressure in the rubber case via a vacuum port 10 after sealing the junction part by covering a rubber cover 3 on the container 2. The metal die 8 for shape keeping is then removed from a recessed part 1 and pressed with hydrostatic pressure by transferring it to a press device. In this way, the forming body in a port shape without any crack nor breakdown is obtd. with good yield.

7. 发明专利

JPS6291412A METHOD FOR CHARGING ISOTROPIC CARBON MOLDED BODY TO BAKING FURNACE 失效
公开(公告)号：JPS6291412A
公开(公告)日：1987-04-25
申请号：JP21925685
申请日：1985-10-03
申请人： TOKAI CARBON KK
发明人： TAMADA OKIFUMI , SAGAWA KATSUJI , OKAJIMA SEIMA
IPC分类号： C04B35/52 , C01B31/04
摘要： PURPOSE:To always produce a high-quality isotropic carbonaceous material by charging a crude carbon molded body obtained by a cold hydrostatic press to a sagger while the body is embedded in a carbonaceous packing, placing a tabular lid on the upper surface, and setting the sagger in a baking furnace section. CONSTITUTION:The crude carbon molded body 4 obtained by the cold hydrostatic press (hereinafter referred to as CIP) is charged in the sagger 6 while the body is embedded in a carbonaceous packing 5 (e.g., granular particles of coke and graphite). The tabular lid 7 (e.g., a carbonaceous sheet and an iron sheet) is placed on the upper surface, then the sagger is set in the baking furnace section 1, and the periphery is covered with the packing material 8 (e.g., quartz sand and coke powder). The sagger is a tea caddy-shaped vessel made of iron and a drop lid consisting of an iron sheet or a carbonaceous sheet and having an area smaller than that of the upper surface of the sagger is preferably used as the tabular lid. By such a baking furnace charging method, the deterioration of the crude carbon molded body obtained by the CIP due to the oxidation can be effectively prevented.

8. 发明专利

JPH07108477B2 失效
公开(公告)号：JPH07108477B2
公开(公告)日：1995-11-22
申请号：JP22624190
申请日：1990-08-28
申请人： TOKAI CARBON KK
发明人： SHIROCHI HIDEHIKO , HIRAMATSU NANAO , TAMADA OKIFUMI
IPC分类号： B30B5/02 , B29C33/40 , B29C43/12 , B29C43/36 , B30B11/00 , B30B15/02

9. 发明专利

JPH05186285A SUBSTRATE FOR HEAT TREATMENT AND ITS PRODUCTION 失效
公开(公告)号：JPH05186285A
公开(公告)日：1993-07-27
申请号：JP1849192
申请日：1992-01-07
申请人： TOKAI CARBON KK , TOSHIBA CORP
发明人： SHINDO HIROYUKI , TAMADA OKIFUMI , MUNEUCHI ATSUO , NIRASAWA HITOSHI
IPC分类号： C01B31/04 , C04B41/50 , C04B41/87
摘要： PURPOSE:To provide a substrate body for heat treatment of metal sintering capable of exhibiting excellent operability and stable durability even in large size, and a method for producing the same. CONSTITUTION:A material structure in which a vitreous carbon layer containing ceramic powder is applied to the surface of graphite material. A method for producing the material structure comprises a process for applying a phenol resin liquid containing uniformly dispersed alumina powder therein to the surface of a graphite material, curing the resin component and then burning the cured material at >=800 deg.C under an inert atmosphere.

10. 发明专利

JPH04105797A RUBBER PRESS FORMING METHOD 失效
公开(公告)号：JPH04105797A
公开(公告)日：1992-04-07
申请号：JP22624190
申请日：1990-08-28
申请人： TOKAI CARBON KK
发明人： SHIROUCHI HIDEHIKO , HIRAMATSU NANAO , TAMADA OKIFUMI
IPC分类号： B30B5/02 , B29C33/40 , B29C43/12 , B29C43/36 , B30B11/00 , B30B15/02
摘要： PURPOSE:To efficiently execute near-net formation by using the same rubber case having a simple shape by interposing the optional shape of formed material composed of plastic deformable organic material in the rubber case. CONSTITUTION:The plastic deformable organic formed material 5 is interposed in the inside wall of the rubber case 4 as the fixed thickness of lining layer and in the case, the formed powder 6 receives isostatic pressing in the condition of packing in the small space compared with the rubber case 4. Therefore, this is effective in the case of obtaining smaller size of the formed body than the rubber case 4.

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