专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明专利

JPH1161611A ROCK WOOL MOLDED FORM AND ITS PRODUCTION 失效
公开(公告)号：JPH1161611A
公开(公告)日：1999-03-05
申请号：JP23912997
申请日：1997-08-21
申请人： NICHIAS CORP
发明人： OGAWA JUNICHI , NAKAYAMA MASAAKI , SASAKI AKIRA , KOURA HISAAKI , HAMANAKA HARUKO
IPC分类号： B32B5/02 , B32B5/26 , B32B19/06 , D04H1/4209 , D04H1/42
摘要： PROBLEM TO BE SOLVED: To obtain a rock wool molded form with high heat resistance, and useful as a refractory thermal insulation material, by producing rock wool fleeces while making an organic binder adhere to rock wool fiber surface, fixing a specific boron compound and the like onto the surface of the fleeces followed by molding them under specific conditions. SOLUTION: First, rock wool fleeces are produced by making an organic binder such as phenolic resin adhere to rock wool fiber surface; subsequently, a boron compound (e.g. boric acid) forming B2 O3 when heated in air and a phosphorus compound (e.g. triammonium phosphate) forming P2 O5 when heated in air, each in the form of a solution, are made to adhere to the surface of the resultant fleeces, followed by drying to effect fixing 0.1-6.6 pts.wt., in terms of B2 O3 , of the boron compound and 0.7-17.8 pts.wt., in terms of P2 O5 , of the phosphorus compound, each based on 100 pts.wt. of the fleeces, onto the surface of the fleeces, and a plurality of the fleeces after treated are mutually superposed and then hot-pressed and molded, thus obtaining the objective rock wool molded form.

32. 发明专利

JPH10203880A POROUS INORGANIC MATERIAL AND ITS PRODUCTION 失效
公开(公告)号：JPH10203880A
公开(公告)日：1998-08-04
申请号：JP2195097
申请日：1997-01-22
申请人： NICHIAS CORP
发明人： RI TAKEOKI , NARITA TAKESHI , OGAWA JUNICHI
IPC分类号： C04B14/46 , C04B38/00
摘要： PROBLEM TO BE SOLVED: To obtain a material with high-grade physical properties consisting of whisker-like needle crystal of new 9Al2 O3 .2B2 O3 through such a design that a group of needle crystals of 9Al2 O3 .B2 O3 each having a diameter of a specific length or less are uniformly and randomly distributed and mutually bound at least one point through sharing needle crystal constituents without the aid of any binder. SOLUTION: A mixture of aluminum oxide (or an aluminum compound capable of forming aluminum oxide when heated) and boron oxide (or a boron compound capable of forming boron oxide when heated) is prepared so as to be (9:2) to (9:6) in the molar ratio: Al2 O3 /B2 O3 , and then subjected to powder molding (compression molding) under controlled molding pressure to form a compact 0.4-2.3g/cm in density (86-20% in porosity), which is then transferred in air to a hot oven where the compact is heated at 800-1,400 deg.C, thus obtaining the objective porous inorganic material consisting of whisker-like needle crystal of 9Al2 O3 .2B2 O3 each

33. 发明专利

JPH10203879A POROUS INORGANIC MATERIAL AND ITS PRODUCTION 失效
公开(公告)号：JPH10203879A
公开(公告)日：1998-08-04
申请号：JP2194997
申请日：1997-01-22
申请人： NICHIAS CORP
发明人： RI TAKEOKI , NARITA TAKESHI , OGAWA JUNICHI
IPC分类号： C04B38/00 , C01B35/12 , C04B30/02 , C22C33/02 , C30B29/62
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a porous inorganic material as aluminum borate whisker of 9Al2 O3 .2B2 O3 by blending a stock mixture with an auxiliary, other than a nickel oxide-based one, having the activity to promote whisker growth. SOLUTION: Aluminum oxide as a stock (or a compound capable of forming aluminum oxide when heated in air) is blended with boron oxide (or a compound capable of forming boron oxide when heated in air) both in finely powdery state so as to be (9:2) to (9:6) in the molar ratio: Al2 O3 /B2 O3 , and the resultant mixture is blended with an auxiliary, i.e., a metal oxide such as iron oxide or vanadium oxide, and a 2nd auxiliary consisting of at least one kind selected from a silica and metallic simple substances and compounds each capable of forming the above-mentioned oxides in air at 0.1-10wt.% based on the Al2 O3 .

34. 发明专利

JPH10203878A POROUS INORGANIC MATERIAL AND ITS PRODUCTION 失效
公开(公告)号：JPH10203878A
公开(公告)日：1998-08-04
申请号：JP2194897
申请日：1997-01-22
申请人： NICHIAS CORP
发明人： RI TAKEOKI , NARITA TAKESHI , OGAWA JUNICHI
IPC分类号： C04B14/46 , C04B38/00
摘要： PROBLEM TO BE SOLVED: To enable the excellent properties of whisker to be easily utilized to the utmost through such a design that a group of needle crystals of 2Al2 O3 .B2 O3 each having a diameter of a specific length or less are uniformly and randomly distributed and mutually bound at least one point through sharing needle crystal constituents without the aid of any binder. SOLUTION: A mixture of aluminum oxide (or an aluminum compound capable of forming aluminum oxide when heated) and boron oxide (or a boron compound capable of forming boron oxide when heated) is prepared so as to in density (86-20% in porosity), which is then transferred in air to a hot oven where the compact is heated at 800-1,400 deg.C, thus obtaining the objective porous inorganic material consisting of a group of needle crystals of 2Al2 O3 .B2 O3 and 9Al2 O3 .2B2 O3 each

35. 发明专利

JPH09157094A PRODUCTION OF GRANULAR AGGREGATE OF ALUMINUM BORATE WHISKER 失效
公开(公告)号：JPH09157094A
公开(公告)日：1997-06-17
申请号：JP33569595
申请日：1995-12-01
申请人： NICHIAS CORP
发明人： OGAWA JUNICHI , RI TAKEOKI
IPC分类号： C30B29/62
摘要： PROBLEM TO BE SOLVED: To obtain granular aggregates of aluminum borate whiskers each having a high aspect ratio in a high yield at a low cost by uniformly mixing Al2 O3 with B2 O3 and NiO in a powdery state, forming the resultant mixture into particles and heating the particles. SOLUTION: A mixture is prepd. by uniformly mixing Al2 O3 or an A1 compd. forming Al2 O3 when heated in air with B2 O3 or a B compd. forming B2 O3 when heated in air and NiO, Ni or a compd. forming NiO when heated in air in a powdery state. The mixture is formed into particles whose particle diameter is preferably >=30μm, the particles are heated at about 1,100-1,400 deg.C to form aluminum borate whiskers and these whiskers are washed with hot water. The resultant granular aggregates of aluminum borate whiskers are easy to handle and suitable for use as a reinforcing material for a metallic or plastic product, etc.

36. 发明专利

JPH0849980A LINING STRUCTURE OF FURNACE WALL 失效
公开(公告)号：JPH0849980A
公开(公告)日：1996-02-20
申请号：JP18740494
申请日：1994-08-09
申请人： NICHIAS CORP
发明人： OGAWA JUNICHI , TANAKA HIDEO , KIDO AKIRA
IPC分类号： F27D1/00
摘要： PURPOSE:To provide a lining structure of a furnace wall which has a high resistance to a reducing gas such as hydrogen gas and alkali with excellent resistance to the velocity of wind and sufficient endurance. CONSTITUTION:A ceramics fiber block 1 is fixed with a fixing member 3 anchored on an iron matte 2 and a protective layer 4 in which an alumina fiber cloth 5 and a mixture of an alumina powder and an inorganic binder are laminated to be formed into a one-piece plate is fixed with a fixing pin 6 to complete a lining structure.

37. 发明专利

JPH04321895A FLUID HEATING PIPE 失效
公开(公告)号：JPH04321895A
公开(公告)日：1992-11-11
申请号：JP11382391
申请日：1991-04-19
申请人： NICHIAS CORP
发明人： SHIBATA KENICHI , OGAWA JUNICHI , WADASAKO MITSUYUKI
IPC分类号： F16L53/00 , H05B3/14
摘要： PURPOSE:To provide a compact fluid heating pipe with improved safety by fixing a pair of electrodes to both inner and outer peripheral surface of a positive characteristic tubular thermistor and supplying current in the direction of pipe wall thickness to reduce an electric resistance value and generate a large quantity of heat irrespective of the length of the pipe. CONSTITUTION:A positive characteristic thermistor 1 is manufactured by kneading together in vacuum a forming blank including lead titanate and organic binder as main components for example and baking it after extruding and molding it into the pipe having a deformed section. A plurality of electrodes 2, 3 consisting of silver films for example are formed on the whole surfaces of both inner and outer peripheries of the static characteristic thermistor 1 to constitute a fluid heating pipe. Thus, since current flows in the direction of the thickness of the pipe wall, the electric resistance value is essentially low compared with a convential heating unit having electrodes disposed on both ends of the pipe and current supplied longitudinally of the pipe. Hence, a large quantity of heat can be generated even by low voltage irrespective of the length of the pipe so that the safety can be improved and miniaturization of the fluid heating pipe can be achieved.

38. 发明专利

JPH03212454A FIBER-REINFORCED SYNTHETIC RESIN COMPOSITE MATERIAL 失效
公开(公告)号：JPH03212454A
公开(公告)日：1991-09-18
申请号：JP723990
申请日：1990-01-18
申请人： NICHIAS CORP
发明人： SHIBATA KENICHI , OGAWA JUNICHI , GOTO YOSHIHIKO
IPC分类号： C08K3/28 , C08K3/00 , C08K7/00 , C08K7/04 , C08L101/00
摘要： PURPOSE:To obtain a composite material having high thermal conductivity and mechanical strength without losing the processability and electric insulating properties of synthetic resins comprising a cured material of a synthetic resin containing a ceramic fiber having a specific range of average fiber length when uniformly dispersed. CONSTITUTION:(A) A synthetic resin is uniformly mixed with (B) ceramic fiber having 20-150mum average fiber length, preferably a highly alumina-based ceramic fiber (e.g. alpha-alumina fiber or mullite fiber) having 25-80mum average fiber length, 1-5mum, especially 2-4mum average fiber diameter and >=70wt.% Al2O3 content in an amount of 5-70wt.% of the whole composite material, and occasionally further with (C) fine particle-like aluminum nitride in an amount of

39. 发明专利

JPH03211244A MANUFACTURE OF ALUMINA SHORT FIBER REINFORCED MAGNESIUM METAL 失效
公开(公告)号：JPH03211244A
公开(公告)日：1991-09-17
申请号：JP584290
申请日：1990-01-12
申请人： NISSAN MOTOR , NICHIAS CORP
发明人： HINO HARUMICHI , KOMATSU MIKIYA , SHIBATA KENICHI , WADASAKO MITSUYUKI , OGAWA JUNICHI
IPC分类号： B22D19/14 , B22D21/04 , C04B30/02 , C04B41/50 , C22C1/00 , C22C47/00 , C22C47/08 , C22C47/12 , C22C49/04
摘要： PURPOSE:To manufacture a reinforced metal in which the generation of segragation is prevented and having excellent mechanical characteristics by forming alumina short fiber by an inorganic binder equal to MgO, setting it into a pressure casting die and subjecting the molten metal of an Mg alloy to pressure casting. CONSTITUTION:Alumina short fiber 5 is formed into the shape of a cup by an inorganic binder constituted of one or >=2 kinds of oxides (such as MgO, Li2O, CaO, ZrO2 or the like) having thermodynamic stability equal to or above that of MgO. The formed body 6 is compactly set to the projecting part 3a of an inner die 3 in a pressure casting die 1, and the metallic molten metal 7 of Mg or an Mg alloy is poured into the pressure casting die 1. Then, an upper die 4 is lowered, and pressure casting is executed to permiate the molten metal into the formed body 6, by which an alumina short fiber reinforced magnesium metal 8 is formed. In this way, the reinforced metal 8 in which the generation of segregation is prevented and having excellent mechanical characteristics such as fatigue properties and creep properties can be obtd.

40. 发明专利

JP2001089254A COMPOSITE CERAMIC MATERIAL AND ITS PRODUCTION PROCESS 失效
公开(公告)号：JP2001089254A
公开(公告)日：2001-04-03
申请号：JP26666499
申请日：1999-09-21
申请人： NICHIAS CORP
发明人： OGAWA JUNICHI , TAWARA HIROSHI , NARITA TAKESHI
IPC分类号： C04B35/80
摘要： PROBLEM TO BE SOLVED: To provide a composite ceramic material capable of easily being worked into a product having thin thickness and a shape that can freely be selected from a wide variety of shapes. SOLUTION: The production process of this composite ceramic material comprises, coating and impregnating a piece of cloth which consists of alumina- silica filament fiber containing a >=80 wt.% mullite component, with a pasty matrix starting material prepared so that it consists essentially of alumina-silica, and drying the resulting material.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式