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1. 发明专利

JPH07309678A PRODUCTION OF SHORT FIBER REINFORCED C/C COMPOSITE PRECURSOR 失效
公开(公告)号：JPH07309678A
公开(公告)日：1995-11-28
申请号：JP9861994
申请日：1994-05-12
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： NARITA NOBUHIKO , YAMADA MASAHIRO , HIRANO KENJI , MUKAI KOICHIRO
IPC分类号： C04B35/83 , C04B35/80
摘要： PURPOSE:To prevent partial separation of carbon fiber in an aggregated state as much as possible in the process of kneading short-fiber carbon fiber and carbonaceous powder, and thereby, to produce a C/C composite precursor having excellent dispersibility of the fiber. CONSTITUTION:The short-fiber carbon fiber and carbonaceous powder containing a binder component and/or compounded with a binder component are mixed and kneaded in the presence of 5-40wt.% monohydric alcohol and 5-15wt.% dihydric alcohol to obtain a short fiber reinforced C/C composite precursor. By this method, a C/C composite precursor having the short-fiber carbon fiber uniformly dispersed in a matrix carbon is easily obtd. The mechanical characteristics of a short fiber reinforced C/C composite produced from this precursor are improved, and a dense product is obtd. Thus, a process to impregnate a product with pitch is omitted or reduced. Moreover, the precursor is easily inserted into a molding die, which improves the production efficiency of the C/C composite.

2. 发明专利

JPH07278698A PRODUCTION OF CARBON FIBER/ALUMINUM ALLOY COMPOSITE MATERIAL HAVING EXCELLENT STRENGTH CHARACTERISTICS 失效
公开(公告)号：JPH07278698A
公开(公告)日：1995-10-24
申请号：JP6741894
申请日：1994-04-05
申请人： NIPPON STEEL CORP
发明人： YAMADA KATSUTOSHI , SEKIGUCHI SHOICHI , HASHIMOTO KEIZO , NARITA NOBUHIKO
IPC分类号： C22C47/02 , C22C47/00 , C22C47/04 , C22C47/06 , C22C1/09
摘要： PURPOSE:To provide a process for producing a carbon fiber/aluminum alloy metal-based composite material having excellent strength characteristics. CONSTITUTION:This process for producing the carbon fiber/aluminum alloy metal-based composite material comprises producing the composite material with an aluminum alloy by subjecting carbon fibers 3 to coating 4 of carbon materials and using such carbon fibers and more specifically producing the composite material having the excellent strength characteristics of simultaneously exhibiting a high level in both of tensile strength and compressive strength and having a small diameter of about

3. 发明专利

JPH0479742B2 失效
公开(公告)号：JPH0479742B2
公开(公告)日：1992-12-16
申请号：JP852085
申请日：1985-01-22
申请人： NIPPON STEEL CORP
发明人： NARITA NOBUHIKO , ASANO KEISUKE , FUKUOKA HIROMI
IPC分类号： F27D11/04 , B22D11/10 , B22D11/11 , B22D41/60 , C21C7/00 , F27D11/02 , H05B3/00

4. 发明专利

JPS639905B2 失效
公开(公告)号：JPS639905B2
公开(公告)日：1988-03-02
申请号：JP9900383
申请日：1983-06-03
申请人： NIPPON STEEL CORP
发明人： NARITA NOBUHIKO , FUKUOKA HIROMI , IDE HIDEO
IPC分类号： B22D11/10 , B22D41/60

5. 发明专利

JPS59133955A Heater for continuous casting nozzle 失效
标题翻译：连续喷枪喷嘴加热器
公开(公告)号：JPS59133955A
公开(公告)日：1984-08-01
申请号：JP851783
申请日：1983-01-21
申请人： Nippon Steel Corp
发明人： FUKUOKA HIROMI , IDE HIDEO , NARITA NOBUHIKO , UEHARA AKIO , HANAI TAKEO
IPC分类号： B22D11/10 , B22D41/60
CPC分类号： B22D41/60
摘要： PURPOSE:To conduct uniformly electricity to a continuous casting nozzle contg. carbon to heat quickly and uniformly the nozzle up to a required temp. by bringing an upper electrode and a lower electrode into contact with both end faces in the longitudinal direction of the nozzle and conducting electricity thereto. CONSTITUTION:An upper electrode 2 and a lower electrode 4 are brought into contact respectively directly or via a conductive thin plate 13 with both end faces in the longitudinal direction of a continuous casting nozzle 6 contg. carbon having electrical conductivity and the nozzle 6 is sandwiched by both electrodes 2 and 4, in continuous casting. When AC current is run in the nozzle 6 in this state, the nozzle evolves heat by Joule heat and its temp. rises. A lifting device 12 of a hydraulic type or the like is provided so as to have a contact buffer function for the electrode 4 and the end face in the lower part of the nozzle 6, so that the tight contact between the lower electrode and the end face in the lower part of the nozzle 6 is effected. The nozzle 6 is uniformly heated in a short time up to a required temp. by said heater prior to installation of the nozzle 6 to a tundish, etc.
摘要翻译：目的：对连续铸造喷嘴均匀地进行电力控制碳将喷嘴快速均匀地加热至所需温度。通过使上电极和下电极与喷嘴的长度方向的两个端面接触并对其进行导电。构成：上电极2和下电极4分别直接或经由导电薄板13接触，导电薄板13的两个端面沿着连续铸造喷嘴6的纵向方向。具有导电性的碳和喷嘴6被两个电极2和4夹持在连续铸造中。当在这种状态下在喷嘴6中运行交流电流时，喷嘴通过焦耳热及其温度来放热。上升。设置有液压型等的提升装置12，以使得电极4和喷嘴6的下部中的端面具有接触缓冲功能，使得下电极和端部之间的紧密接触在喷嘴6的下部形成面。喷嘴6在短时间内被均匀地加热到所需温度。在将喷嘴6安装到中间包等之前，通过所述加热器

6. 发明专利

JPH06305832A PRODUCTION OF SHORT FIBER-REINFORCED C/C COMPOSITE 失效
公开(公告)号：JPH06305832A
公开(公告)日：1994-11-01
申请号：JP11242493
申请日：1993-04-16
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： NARITA NOBUHIKO , HIRANO KENJI , MUKAI KOICHIRO
IPC分类号： C04B35/83 , C04B35/52 , C04B35/80
摘要： PURPOSE:To provide a process for easily producing a ceramicincorporated C/C composite in a short time in high dispersibility of ceramic particles compared with conventional process for the production of short fiber-reinforced C/C composite incorporated with ceramic particles. CONSTITUTION:Pitch raw material is mixed with ceramic powder at or above the softening point of the pitch and the mixture is cooled and crushed to obtain a matrix raw material. The matrix raw material is uniformly mixed with carbon short fibers in a solvent such as water to obtain a short fiber-reinforced C/C composite precursor. The precursor is baked and formed by heating in an inert gas atmosphere at 400-1200 deg.C in restricted state and the formed product is hot-pressed in vacuum or in an inert gas atmosphere at a temperature below the decomposition temperature of the ceramic powder under a pressure of to obtain the objective short fiber-reinforced C/C composite.

7. 发明专利

JPH04139084A PRODUCTION OF SURFACE-COATED CARBON MATERIAL 失效
公开(公告)号：JPH04139084A
公开(公告)日：1992-05-13
申请号：JP26166090
申请日：1990-09-29
申请人： AGENCY IND SCIENCE TECHN , KAWASAKI STEEL CO , NIPPON STEEL CORP
发明人： SHIMURA HIROFUMI , SASAKI SHINYA , HASEGAWA KAZUHIRO , SATO MASARU , NARITA NOBUHIKO , HIRANO KENJI
IPC分类号： C04B41/88 , C01B31/02 , C04B41/90 , C23C4/12
摘要： PURPOSE:To improve the oxidation and wear resistances of a carbon material by coating the surface of the carbon material with a high m.p. metal by laser- plasma hybrid spraying or further coating the coated surface with a metal silicide. CONSTITUTION:The surface of a carbon material is coated with a high m.p. metal or the carbide thereof by laser-plasma hybrid spraying. The metal is Mo or W and the carbide is MoxCy or WC. The coated surface may further be coated with a metal silicide by laser-plasma hybrid spraying, plasma spraying or laser spraying. MoSi2 or WSi2 is used as the silicide.

8. 发明专利

JPS59223149A IMMERSION NOZZLE FOR CONTINUOUS CASTING 失效
公开(公告)号：JPS59223149A
公开(公告)日：1984-12-14
申请号：JP9900383
申请日：1983-06-03
申请人： NIPPON STEEL CORP
发明人： NARITA NOBUHIKO , FUKUOKA HIROMI , IDE HIDEO
IPC分类号： B22D11/10 , B22D41/60
摘要： PURPOSE:To prevent damage of a nozzle and to enable stable heating of the nozzle by forming integrally a carbonaceous electrode and a nozzle body and making uniform the sectional area of an electric current route. CONSTITUTION:A titled nozzle consists of a cylindrical nozzle body 1 which is formed integrally with an electrode 4 on at least the side of said nozzle 1 where the outside circumferences of the upper half parts face each other. The body 1 consists of a refractory material contg. carbon and the electrode 4 consists of a finned carbonaceous material. The above-mentioned immersion nozzle is stably heated with the uniform cross section of an electric current route, by which the damage on the nozzle is prevented.

9. 发明专利

JPS59218245A Immersion nozzle for continuous casting 失效
标题翻译：连铸喷嘴
公开(公告)号：JPS59218245A
公开(公告)日：1984-12-08
申请号：JP9293083
申请日：1983-05-26
申请人： Nippon Steel Corp
发明人： NARITA NOBUHIKO , FUKUOKA HIROMI , IDE HIDEO
IPC分类号： B22D11/10 , B22D41/50
CPC分类号： B22D41/50
摘要： PURPOSE:To suppress cracking of an immersion nozzle for continuous casting by forming a slit provided in a nozzle body in such a way that the outside part in contact with powder for casting is formed of a corrosion resistant material and that the inside part is formed of a material having about the same coefft. of thermal expansion as the coefft. of thermal expansion of the outside part. CONSTITUTION:A slit 3 for blowing gas is provided in the body of an immersion nozzle for continuous casting. The outside part 1 of the slit 3 in the range where said part contacts with powder for continuous casting is formed of a material having high corrosion resistance such as zirconia graphite or the like and the inside part 1' opposite to the part 1 is formed of a material such as zirconia graphite or the like having about the same coefft. of thermal expansion as the coefft. of thermal expansion as the coefft. of thermal expansion of the part 1. Such nozzle does not produce a difference in thermal expansion owing to a difference in the coefft. of thermal expansion when heated and is free from the cracking from the slit 3 side. Uniform ejection of gas from the inside of the nozzle is thus made possible and the effective removal of the material sticking on said wall is possible.
摘要翻译：目的：通过形成设置在喷嘴体中的狭缝来抑制用于连续铸造的浸入式喷嘴的裂纹，使得与铸造用粉末接触的外部部分由耐腐蚀材料形成，并且内部部分由具有大约相同系数的材料。的热膨胀系数。的外部热膨胀。构成：用于吹塑气体的狭缝3设置在用于连续铸造的浸没式喷嘴的主体中。所述部分与连续铸造用粉末接触的范围内的狭缝3的外侧部分1由具有高耐腐蚀性的材料形成，例如氧化锆石墨等，并且与部分1相对的内部部分1'由具有大约相同系数的诸如氧化锆石墨等的材料。的热膨胀系数。的热膨胀系数。这种喷嘴由于系统的差异而不产生热膨胀的差异。的热膨胀，并且不会从狭缝3侧开裂。因此，能够从喷嘴内部均匀地排出气体，能够有效地去除附着在该壁上的材料。

10. 发明专利

JPH03197359A CARBON FIBER-REINFORCED CARBON MATERIAL HAVING HIGH HARDNESS AND ITS PRODUCTION 失效
公开(公告)号：JPH03197359A
公开(公告)日：1991-08-28
申请号：JP33603789
申请日：1989-12-25
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： SHIMADA MASAKI , NARITA NOBUHIKO
IPC分类号： C04B35/83 , C04B35/52
摘要： PURPOSE:To improve hardness by molding with heating a mixture of reinforcing carbon fiber and specific carbonaceous powder, carbonizing and subjecting to impregnating and carbonizing treatment. CONSTITUTION:A thermosetting resin (e.g., phenolic resin) is carbonized in a non-oxidative gas atmosphere at 800-1000 deg.C for about 1hr and crushed in a soft material crusher to obtain carbonaceous powder having >=0.36nm d002. Next, 100 pts.wt. residual carbon of reinforcing fiber and binder (e.g. phenolic resin) eliminating the evaporating amount at carbonization of the binder is mixed with 80-120 pts.wt. said carbonaceous powder and molded with heating to obtain a molded material. Further, said molded material is heated in an inert gas atmosphere at

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