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11. 发明专利

JPS62216966A PACKING POWDER FOR BURNING CARBON MATERIAL 失效
公开(公告)号：JPS62216966A
公开(公告)日：1987-09-24
申请号：JP5882686
申请日：1986-03-17
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： OKAMOTO TAKESHI , MIYAJI KAZUO , TANAKA SEIJIRO , KAWAKAMI TATSUO
IPC分类号： C04B35/52 , C01B31/02

12. 发明专利

JPH11199331A REPAIRING MATERIAL FOR HOT SEIZURE 失效
公开(公告)号：JPH11199331A
公开(公告)日：1999-07-27
申请号：JP1817598
申请日：1998-01-12
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： TERAYAMA SATORU , OKAMOTO TAKESHI
IPC分类号： C04B35/66 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To provide a repairing material for hot seizure that can flow in a short time and promptly seizes to the damaged sites and shows excellent durability. SOLUTION: To a fire-refractory aggregate, are formulated in outer percentage, (a) 10-30 wt.% of solid pitch softening at 80-150 deg.C, (b) 1-5 wt.% of at least one selected from the substances belonging to the second class petroleum of dangerous articles group 4: gas oil or lamp oil and the third class petroleum typified by heavy oil, and, if necessary, (C) 1-10 wt.% of stearic acid.

13. 发明专利

JPH10226563A PRODUCTION OF SLIDING NOZZLE PLATE 失效
公开(公告)号：JPH10226563A
公开(公告)日：1998-08-25
申请号：JP3345697
申请日：1997-02-18
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： OGATA HIRONORI , SASAKI KIMIAKI , OKAMOTO TAKESHI , TANAKA SEIJIRO
IPC分类号： C04B35/00
摘要： PROBLEM TO BE SOLVED: To provide the method for producing a refractory for the sliding nozzle plate of a steelmaking furnace. SOLUTION: An alumina-zirconia spinel material consisting of 40-80.5wt.% alumina, 17-40wt.% zirconia and 0.5-18wt.% magnesia and contg. an alumina- zirconia spinel is mixed by 2-50wt.%, based on the total refractory material, with at least one kind of refractory material, carbon and at least one kind of metal powder are further added, and the admixture is kneaded with a binder such as phenol resin, compacted and then calcined in a reducing atmosphere. Consequently, the sliding nozzle plate with the resistance to wear, spalling and corrosion further improved than before is produced.

14. 发明专利

JPH02242082A CRUCIBLE FOR SMELTING AND EVAPORATING METAL 失效
公开(公告)号：JPH02242082A
公开(公告)日：1990-09-26
申请号：JP6121989
申请日：1989-03-13
申请人： KAWASAKI REFRACTORIES CO LTD , NIPPON SHEET GLASS CO LTD
发明人： OKAMOTO TAKESHI , TANAKA SEIJIRO , KAWAKAMI TATSUO , MAEDA MASATOSHI , NAKAI HIDEMI
IPC分类号： C23C14/24 , C04B35/52 , F27B14/10
摘要： PURPOSE:To permit the smelting and the evaporation of a metal surely and permit further the smelting and the evaporation of a metal such as stainless steel or super alloy safely and surely by a method wherein a crucible is provided with the double layered structure of an outer crucible and an inner crucible, provided freely in the outer crucible substantially, while the outer crucible is made of a composite ceramic having the principal constituent of boron nitride and the inner crucible is made of isotropic graphite having a specific density. CONSTITUTION:The subject crucible is provided with the double layered structure of an outer crucible and an inner crucible, provided freely in the outer crucible substantially. The outer crucible is constituted of a composite ceramic, made by blending the base of boron nitride with at least one kind of the material of the ceramics such as Al2O3, ZrO2, Si3N4, AlN, TiN, ZrN, Y2O3, MgO, B4C, ZrC, ZrB2, TiB2 or the like and provided with a bending strength higher than 10kgf/mm . A crucible, made of isotropic graphite and having the density of 1.70-1.93g/cm , is employed as the outer crucible. The thermal expansion coefficient of the inner crucible is preferably as small as possible and the same coefficient less than 5.0X10 is proper.

15. 发明专利

JPH02180767A ALUMINA-MULLITE-SILICON CARBIDE COMPOSITE SINTERED BODY 失效
公开(公告)号：JPH02180767A
公开(公告)日：1990-07-13
申请号：JP33145088
申请日：1988-12-29
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： OSHIMA HIROAKI , OKAMOTO TAKESHI , TANAKA SEIJIRO , KAWAKAMI TATSUO
IPC分类号： C04B35/56 , C04B35/10 , C04B35/103 , C04B35/80 , C04B35/81
摘要： PURPOSE:To form an alumina-based ceramic material having superior thermal shock resistance, toughness and strength at high temp. as compared with the conventional material by sintering a mixture of alumina with silica and silicon carbide whiskers by hot pressing. CONSTITUTION:A mixture of 35-70wt.% Alumina having 0.1-10mum average particle size with 10-25wt.% silica having 0.1-10mum average particle size and 5-40wt.% silicon carbide whiskers having

16. 发明专利

JPS6457960A CONTINUOUS CASTING NOZZLE FOR NONFERROUS METAL 失效
公开(公告)号：JPS6457960A
公开(公告)日：1989-03-06
申请号：JP21351787
申请日：1987-08-26
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： OKAMOTO TAKESHI , TANAKA SEIJIRO , KAWAKAMI TATSUO
IPC分类号： B22D11/10 , B22D41/50 , B22D41/54
摘要： PURPOSE:To reduce the generation of an oxidized wear inside a casting nozzle by fitting a ceramic to the casting nozzle inner face part from the end part of the fitting side of the molten metal container of the casting nozzle to the part where a nonferrous metal completes its solidification inside the casting nozzle. CONSTITUTION:In case of pulling out the nonferrous metal solidified by a casting nozzle 1 a ceramic cylindrical body 7 is provided in step by fitting it to the inner face part of the nozzle 1 of up to the part where the nonferrous metal completes its solidification inside the nozzle 1 from the end of the molten metal container fitting side. The thickness of the ceramic cylindrical body 7 is taken about 2/5-1/2 the thickness of a nozzle main body 6, composed of the Si3N4-BN ceramics contg. about 30% BN and the nozzle main body 6 is taken of a graphite material. The service life of the casting nozzle 1 is thus extended and the safety and productivity are improved.

17. 发明专利

JPS6183676A Manufacture of carbon refractories 失效
$Manufacture of carbon refractories$
标题翻译：碳氟化合物的制造
公开(公告)号：JPS6183676A
公开(公告)日：1986-04-28
申请号：JP20259184
申请日：1984-09-26
申请人： Kawasaki Refractories Co Ltd
发明人： OKAMOTO TAKESHI , HASEGAWA SUSUMU , SHINTANI HIROTAKA , KAWAKAMI TATSUO
IPC分类号： C04B35/52

18. 发明专利

JPH1194473A WET SPRAY NOZZLE 失效
公开(公告)号：JPH1194473A
公开(公告)日：1999-04-09
申请号：JP27387497
申请日：1997-09-18
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： IIDA MASAKAZU , YOSHIMURA MATSUICHI , OKAMOTO TAKESHI , TANAKA SEIJIRO
IPC分类号： F27D1/16
摘要： PROBLEM TO BE SOLVED: To obtain a wet spray nozzle for irregular refractories in which a finely sprayed body can be obtained by limiting spread of the material being sprayed. SOLUTION: A wet spray nozzle 1 for irregular refractories is bent by a specified angle just like a bent tube. The bent tube-like nozzle 1 is coupled with piping 2 for introducing the air in the delivery direction of irregular refractories and piping 3 for introducing a set accelerating agent from a position of the nozzle different from that for introducing the air. More specifically, the air and a set accelerating agent are introduced to the nozzle through two systems.

19. 发明专利

JPH10245282A CARBON-CONTAINING REFRACTORY 失效
公开(公告)号：JPH10245282A
公开(公告)日：1998-09-14
申请号：JP4877197
申请日：1997-03-04
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： OKAMOTO TAKESHI , IIDA ATSUHISA
IPC分类号： C04B41/83 , C04B35/52
摘要： PROBLEM TO BE SOLVED: To extremely reduce the damage by the oxidation of carbon in a carbon-containing refractory and further improve the tolerance thereof by coating a coating material containing a specific proportion of aluminum on the surface. SOLUTION: This carbon-containing refractory is obtained by coating a coating material containing 6-30wt.% aluminum on the carbon-containing refractory in 10-3,000μm thickness. The coating material acts as a coating layer, blocks the penetration of an oxidative gas such as air into the interior of the carbon-containing refractory and has effects to prevent the refractory from becoming weak by decarbonization by the oxidation of the carbon. Because, the aluminum foils present in a dispersing state in the coating material are strongly adhered to each other through resin component in the coating material and maintain airtightness up to about 600 deg.C. Further, at above 600 deg.C, the aluminum forms an alumina thin layer by an oxidation reaction and a dense layer are formed on the surface. Thereby, the penetration of the oxidative gas is blocked penetrating into the refractory by the aluminum foil and the alumina, and the oxidation of the carbon in the carbon-containing refractory is prevented.

20. 发明专利

JPH10185898A EVALUATION METHOD FOR REFRACTORY 失效
公开(公告)号：JPH10185898A
公开(公告)日：1998-07-14
申请号：JP35535696
申请日：1996-12-20
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SHIMA KENJI , ISHII HIROMASA , OKAMOTO TAKESHI
IPC分类号： G01N33/00 , G01N33/38
摘要： PROBLEM TO BE SOLVED: To obtain an evaluation method that can evaluate the wear of a refractory in a laboratory manner, by burning an iron powder or a powder, in which a slug component is mixed with an iron powder, and thermally spraying its oxide on the refractory. SOLUTION: In the refractory evaluation apparatus 1, a powder 3, in which an iron powder stored in an iron-powder storage tank 2 is mixed with a slug component is fed by a feeder 4, it is burned together with oxygen 5 and propane 6, and it is thermally sprayed on a refractory 8 to be evaluated, by using a burner 7. In this case, the powder, in which the slug component in a proper amount, in a facility using the refractory 8, is mixed with the iron powder of a high purity, and the powder is burned. Then, an oxide which is generated at this time is supplied continuously in a large amount and at a high temperature of 1800 deg.C or higher, and it is thermally sprayed on the refractory 8. In addition, in order to quantitatively determine an evaluation condition, the surface temperature of the refractory 8 is measured by a radiation thermometer. Then, by comparing the wear volume of the refractory 8 or by comparating the wear area of its cross section, the wear of the refractory is evaluated. Consequently, the slug component in a large amount can be supplied and evaluated in a laboratory manner.

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