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1. 发明专利

JPH06106311A CONTINUOUS CASTING NOZZLE 失效
公开(公告)号：JPH06106311A
公开(公告)日：1994-04-19
申请号：JP27813292
申请日：1992-09-21
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MIYAGAWA SABURO , TSUNETSUGU KUNIO , SHINTANI HIROTAKA
IPC分类号： B22D11/10 , B22D41/54 , C04B35/10 , C04B35/103
摘要： PURPOSE:To improve the durability of the continuous casting nozzle for continuous casting equipment by preventing the oxidation of the carbonaceous raw material contained in the continuous casting nozzle. CONSTITUTION:The continuous casting nozzle is constituted by adding 0.2-10wt.% magnesium-boron composite to a refractory base material contg. 10-30wt.% carbonaceous raw material, 60-80wt.% alumina and 0-10wt.% molten silica. The magnesium-boron of the magnesium-boron composite added to the nozzle decompose at a high temp. to form a dense layer of MgO and form a high-viscosity melt consisting of MgO and B2O3, thereby preventing the oxidation of the carbonaceous raw material and prolonging the durability of the continuous casting nozzle.

2. 发明专利

JPH0639483A CERAMIC CORE 失效
公开(公告)号：JPH0639483A
公开(公告)日：1994-02-15
申请号：JP19936392
申请日：1992-07-27
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SAITO MASANORI , SHINTANI HIROTAKA
IPC分类号： B22C1/00 , B22C9/10 , C04B35/14
摘要： PURPOSE:To provide a ceramic ore having excellent mechanical strength, thermal shock resistance and also, releasing property a after casting in the ceramic core for precision casting. CONSTITUTION:This ceramic core containing fused silica as the main raw material is constituted of 60-99wt.% the fused silica raw material and 1-40wt.% at least either one between quartz glass fiber and Al2O3-SiO2 amorphous ceramic fiber. Average fiber length of the quartz glass fiber or the Al2O3-SiO2 amorphous ceramic fiber is made to be 5-100mum.

3. 发明专利

JPH05345644A 失效
公开(公告)号：JPH05345644A
公开(公告)日：1993-12-27
申请号：JP15193492
申请日：1992-06-11
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： OTA HIROMICHI , SHINTANI HIROTAKA , OGUCHI MASAO
IPC分类号： C03C27/00
摘要： PURPOSE:To provide the ceramic jig for airtightly sealing the lead wire of an electronic part, improving the yield of the airtight sealing process and enabling the improvement in working environments. CONSTITUTION:The jig comprises 15-60wt.% of hexagonal boron nitride (h-BN) and the remaining amount of one kind or more selected from sialon, aluminum oxynitride (AlON), alumina (Al2O3), mullite (3Al2O3.2SiO2).

4. 发明专利

JPH05238811A 失效
公开(公告)号：JPH05238811A
公开(公告)日：1993-09-17
申请号：JP3988192
申请日：1992-02-26
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO , MITSUBISHI MATERIALS CORP
发明人： NAKAJIMA MASAYOSHI , OKAMOTO TAKAO , SHINTANI HIROTAKA , IMAIDA YASUO , OISHI IZUMI , NANBU MIKI , HANAOKA HARUO
IPC分类号： C04B35/103 , C04B35/10 , C04B35/44 , C04B35/443 , C04B35/52
摘要： PURPOSE:To provide refractory bricks ensuring an adequate level of permanent linear expansion coefficient comprising an alumina-magnesia-enriched spinel carbon bricks to which electrofused magnesia-enriched spinel starting material reduction in antislugging properties. CONSTITUTION:10 to 80wt.% of an electrofused magnesia-enriched spinel starting material containing more than 95wt.% of the total MgO and Al2O3 at a MgO/Al2 O3 weight ratio of 50/50 to 95/5, 3 to 60wt.% of a carbonaceous starting material and 10 to 85wt.% of an alumina starting material are used for the production.

5. 发明专利

JPH0426540A SLIDING NOZZLE PLATE 失效
公开(公告)号：JPH0426540A
公开(公告)日：1992-01-29
申请号：JP13050690
申请日：1990-05-21
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SAKAGUCHI MASAYUKI , YAMAMOTO JUSAKU , SHINTANI HIROTAKA , KAWAKAMI TATSUO
IPC分类号： B22D11/10 , B22D41/32 , C04B35/00
摘要： PURPOSE:To improve the oxidation resistance and resistance to wear caused by oxidation in a sliding nozzle plate by kneading metallic silicon and specified metallic silicide into a fire resisting inorganic material incorporating carbon components, molding it, thereafter sintering it to manufacture a sliding nozzle plate. CONSTITUTION:By pts.wt., 2 to 10 metallic silicon and 0.2 to 2 of at least one kind of metallic silicide among CaSi2, TiSi2, ZrSi2, MoSi2, WSi2, TaSi2 and NbSi2 are added and kneaded into 100 aggregate constituted of a fire resisting inorganic material incorporating carbon components. This mixture is molded and is thereafter sintered in a nonoxidizing atmosphere to manufacture the sliding nozzle plate. In the stage of the above-mentioned sintering by the metallic silicide added as a catalyst together with the metallic silicon, SiC whiskers are formed on the matrix part of the sliding nozzle plate. Since the above- mentioned SiC whiskers are constituted of perfect crystals without defects, they have about 2100kgf/mm tensile strength which is the one close to theoretical strength, and this tensile strength owing to the above-mentioned perfect crystals is exceedingly high one compared to that by lumpy SiC crystals.

6. 发明专利

JPH046150A MAGNESIA-CHROME REFRACTORIES 失效
公开(公告)号：JPH046150A
公开(公告)日：1992-01-10
申请号：JP10576590
申请日：1990-04-20
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SHINTANI HIROTAKA , UNOSAKI NOBUYUKI , SAKAGUCHI MASAYUKI , ISHII HIROMASA , KAWAKAMI TATSUO
IPC分类号： C04B35/047 , C04B35/04
摘要： PURPOSE:To improve spalling resistance by adding a prescribed percentage of alumina-based starting material of prescribed grain size to magnesia-chrome aggregate and allowing microcracks to occur in the structure of refractories. CONSTITUTION:Alumina-based starting material of

7. 发明专利

JPH042655A BURNED HIGH-ALUMINA REFRACTORY BRICK 失效
公开(公告)号：JPH042655A
公开(公告)日：1992-01-07
申请号：JP10367890
申请日：1990-04-19
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SHINTANI HIROTAKA , UNOSAKI NOBUYUKI , ISHII HIROMASA , KAWAKAMI TATSUO
IPC分类号： C04B35/101 , C04B35/10
摘要： PURPOSE:To improve spalling resistance of burned high-alumina refractory brick by blending a refractory raw material comprising Al2O3 as a main component with a specific amount of quartz, molding and burning. CONSTITUTION:100 pts.wt. refractory raw material which consists essentially of synthetic mullite having >=70% purity and Al2O3 such as sintered Al2O3 or electrolyzed Al2O3 and have

8. 发明专利

JPH03243259A SUBMERGED NOZZLE FOR CONTINUOUS CASTING 失效
公开(公告)号：JPH03243259A
公开(公告)日：1991-10-30
申请号：JP3993090
申请日：1990-02-21
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： TAKESHITA SHIGEYUKI , HASEGAWA SUSUMU , SHINTANI HIROTAKA , KAWAKAMI TATSUO , DAIMON MASAYA , HIGASHIHARA TAKESHI
IPC分类号： B22D11/10 , B22D41/54 , C04B35/10 , C04B35/103 , C04B35/48
摘要： PURPOSE:To obtain a submerged nozzle, in which each different characteristic demanded to each position is satisfied and the durability is excellent, by specifying compositions of base end part, powder line part and tip part in the submerged nozzle for continuous casting. CONSTITUTION:In the submerged nozzle for continuous casting, the base end part 1 is the material constituted of

9. 发明专利

JPH03205344A PLATE BRICK FOR UNBURNED SLIDING NOZZLE 失效
公开(公告)号：JPH03205344A
公开(公告)日：1991-09-06
申请号：JP34242989
申请日：1989-12-30
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： YAMAMOTO JUSAKU , SAKAGUCHI MASAYUKI , SHINTANI HIROTAKA , KAWAKAMI TATSUO
IPC分类号： B22D41/32 , C04B35/00 , C04B35/632
摘要： PURPOSE:To improve oxidation resistance of plate brick and to improve durability by blending body comprising refractory inorganic material with polycarbosilazane and forming plate brick. CONSTITUTION:Body comprising a refractory inorganic material is blended with 1-10wt.% (outer percentage) polycarbosilazane powder having

10. 发明专利

JPH0289546A NOZZLE FOR CONTINUOUS CASTING 失效
公开(公告)号：JPH0289546A
公开(公告)日：1990-03-29
申请号：JP24058688
申请日：1988-09-26
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： TAKESHITA SHIGEYUKI , SHINTANI HIROTAKA , KAWAKAMI TATSUO
IPC分类号： B22D11/10 , B22D41/50 , C04B35/103 , C04B35/48
摘要： PURPOSE:To restrain fining-down and flowing-out of zirconia grain and to give high erosion resistance by using the specific zirconia-graphite quality material to the part contacting with mold powder in an alumina-graphite quality submerged nozzle. CONSTITUTION:In the alumina-graphite quality submerged nozzle using to steel continuous casting, the zirconia-graphite quality material containing 50-90wt.% zirconia and 10-40% graphite is used to the part contacting with the mold powder. The zirconia material mixed at 60/40-90/10 ratio of non-stabilized zirconia and lime-stabilized zirconia is used. By using the nozzle for continuous casting, the erosion resistance at powder-line is improved and continuous casting is stably executed.

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