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1. 发明专利

JPH0437453A NOZZLE FOR CASTING WIDE AND THIN SLAB 失效
公开(公告)号：JPH0437453A
公开(公告)日：1992-02-07
申请号：JP13970990
申请日：1990-05-31
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： HANAGIRI SEIJI , YUYAMA HIDETOSHI , KANEMATSU KINJI , IIZUKA YOSHIHARU , HARADA TSUTOMU
IPC分类号： B22D11/10 , B22D41/54 , C04B35/00 , C04B35/10 , C04B35/103 , C04B35/18 , C04B35/48
摘要： PURPOSE:To provide a nozzle having excellent durability by incorporating zirconia, calcium zirconate stabilized with CaO, kneading and forming blending material containing refractory raw material of Al2O3, etc., and mosophase carbon, etc., and burning under non-oxidizing atmosphere. CONSTITUTION:The blending material containing 30-70 wt% the zirconia and calcium zirconate stabilized with CaO, 5-30 wt% the refractory raw material having

2. 发明专利

JPH0437451A NOZZLE FOR CASTING WIDE AND THIN SLAB 失效
公开(公告)号：JPH0437451A
公开(公告)日：1992-02-07
申请号：JP13970790
申请日：1990-05-31
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： HANAGIRI SEIJI , YUYAMA HIDETOSHI , KANEMATSU KINJI , IIZUKA YOSHIHARU , HARADA TSUTOMU
IPC分类号： B22D11/10 , B22D41/54 , C04B35/00
摘要： PURPOSE:To provide a nozzle having excellent durability by kneading and forming the specific wt% of mesophase carbon, graphite the specific particle diameters of refractoriness raw material and bonding material and burning after drying. CONSTITUTION:The blending material of 3-15 wt% mesophase carbon, 5-40 wt% graphite the refractoriness raw material having

3. 发明专利

JPH02268953A NOZZLE FOR CONTINUOUS CASTING MACHINE AND REFRACTORY FOR NOZZLE THEREOF 失效
公开(公告)号：JPH02268953A
公开(公告)日：1990-11-02
申请号：JP9024189
申请日：1989-04-10
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： HANAGIRI SEIJI , SUKENARI SHIRO , YUYAMA HIDETOSHI , KANO HIROSHI , HARADA TSUTOMU , IIZUKA YOSHIHARU , SURUGA TOSHIHIRO
IPC分类号： B22D11/10 , B22D41/54 , C04B35/10 , C04B35/103 , C04B35/48
摘要： PURPOSE:To prevent the development of breakage in a nozzle and collapse and crack in a refractory and to operate safely casting, etc., by containing the specific quantity of mesophase carbon powder, etc., in the nozzle, slit-shape submerged nozzle and refractory for nozzle in a continuous casting machine. CONSTITUTION:The nozzle contains 1-30% mesophase carbon powder and the balance alumina series raw material and/or zirconia series raw material as aggregate and silicon carbide and graphite powder as fine grain. The slit-shape submerged nozzle for twin belt type continuous casting machine contains 3-15% mesophase carbon powder and the balance of the same material as the above aggregate. The refractory for nozzle contains 1-30% mesophase carbon, which has =50% mesophase content and

4. 发明专利

JPH02212383A METHOD FOR REUSING REFRACTORY 失效
公开(公告)号：JPH02212383A
公开(公告)日：1990-08-23
申请号：JP3430389
申请日：1989-02-13
申请人： KUROSAKI REFRACTORIES CO , NIPPON STEEL CORP
发明人： ISOMURA SACHIYOSHI , KURATA KOSUKE , MATSUI TAIJIRO , KANO HIROSHI , NITAWAKI SOUICHIROU , HARADA TSUTOMU , NAGATA HIROSHI
IPC分类号： C04B41/80 , C04B35/00
摘要： PURPOSE:To make it possible to reuse a used refractory molded body such as a used immersion nozzle by dissolving and removing a metal sticking to the molded body by immersion in a soln. for eluting a stuck metal. CONSTITUTION:A soln. for eluting a stuck metal, e.g. a soln. of H2SO4 or HCl is prepd. A used refractory molded body such as a used immersion nozzle is immersed in the soln. to dissolve and remove a metal sticking to the molded body, e.g. iron sticking by immersion in molten iron.

5. 发明专利

JPH0437448A NOZZLE FOR CASTING WIDE AND THIN SLAB 失效
公开(公告)号：JPH0437448A
公开(公告)日：1992-02-07
申请号：JP13970690
申请日：1990-05-31
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： HANAGIRI SEIJI , KANEMATSU KINJI , YUYAMA HIDETOSHI , IIZUKA YOSHIHARU , HARADA TSUTOMU
IPC分类号： B22D11/10 , B22D41/54 , C04B35/00
摘要： PURPOSE:To provide a nozzle having excellent durability by kneading and forming the specific wt% of mesophase carbon, single element or compound of Al and Si, boron carbide, graphite and the other refractoriness raw material and bonding material and burning after drying. CONSTITUTION:The blending material of 3-15 wt% mesophase carbon, 3-10 wt% single element or compound Al and Si, 0.2-2.0 wt% boron carbide, 5-40 wt% graphite and the other refractoriness material and the bonding material is kneaded and formed. After drying this, the burning is executed to manufacture the nozzle having excellent hot strength and modulus of elasticity can be provided.

6. 发明专利

JPS60177952A SLIDING NOZZLE DEVICE HAVING GAS BLOWING FUNCTION 失效
公开(公告)号：JPS60177952A
公开(公告)日：1985-09-11
申请号：JP3477784
申请日：1984-02-24
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： KUSANO AKIHIKO , FUKUNAGA SHINICHI , KANO HIROSHI , HARADA TSUTOMU
IPC分类号： B22D11/10 , B22D37/00 , B22D41/42
摘要： PURPOSE:To provide a titled device which has excellent resistance to erosion and can blow uniformly and substantially an inert gas for a long period by providing a gas blowing ring having plural pieces of radial small holes from the groove formed along the outside circumferential part in the aperture of a stationary plate brick toward the sliding the plate side at the center of the aperture. CONSTITUTION:The stationary plate 3' of this sliding nozzle (SN) device is subjected to a heat treatment at

7. 发明专利

JP2000103682A BRICK FOR SLIDING NOZZLE APPARATUS 失效
公开(公告)号：JP2000103682A
公开(公告)日：2000-04-11
申请号：JP27623298
申请日：1998-09-29
申请人： KUROSAKI REFRACTORIES CO
发明人： SHIN TAKAAKI , NITAWAKI SOICHIRO , HARADA TSUTOMU
IPC分类号： B22D11/10 , B22D41/32 , B22D41/54 , C04B35/00 , C04B35/63
摘要： PROBLEM TO BE SOLVED: To improve strength in a low-temperature range of =60 mol% in one or a mixture of two or more of silicone resins to be used as an organic binder. The content of methyl group is made >=60 mol% and

8. 发明专利

JPH11189467A ZIRCONIA-GRAPHITE REFRACTORY EXCELLENT IN THERMAL SHOCK RESISTANCE 失效
公开(公告)号：JPH11189467A
公开(公告)日：1999-07-13
申请号：JP35589897
申请日：1997-12-24
申请人： KUROSAKI REFRACTORIES CO
发明人： HARADA KENTARO , IIZUKA YOSHIHARU , HARADA TSUTOMU , YAMASHIRO HIROTAKA
IPC分类号： B22D11/10 , B22D41/54 , C04B35/48
摘要： PROBLEM TO BE SOLVED: To obtain a zirconia-graphite material refractory having excellent spalling resistance even if the content of zirconia is increased to improve corrosion resistance. SOLUTION: This zirconia-graphite refractory is obtained by using a raw material composition comprising 40-87 wt.% middle particle zirconia having 150-10 μm particle diameter, 10-50 wt.% fine powder zirconia having

9. 发明专利

JPH09225628A PLATE BRICK 失效
公开(公告)号：JPH09225628A
公开(公告)日：1997-09-02
申请号：JP6541196
申请日：1996-02-26
申请人： KUROSAKI REFRACTORIES CO
发明人： HARUKI KOUICHI , HARADA TSUTOMU , KANEKO TOSHIAKI , IMANAKA TATSUYA , KIMOTO YOSHIO
IPC分类号： B22D41/28 , B22D11/10
摘要： PROBLEM TO BE SOLVED: To provide a plate brick, in which a changable brick member is difficult to slip from a plate base brick and regenerating ratio and reusing times are high. SOLUTION: The plate brick A is inserted with the changable brick member 19 having a molten steel passing-through hole 21 in a through-hole 18 arranged in the plate base brick 16. A sliding surface 23 having the same plate as the sliding surface 22 of the plate base brick 16 is formed at one side of the changable brick member 19 and an annular projecting part 25 projecting from a non-sliding surface of the plate base brick 16 is arranged at the other side to constitute the plate brick. In this case, the outer diameter of a through-hole inserting part 26 of the changable brick member 19 is set to the outer diameter or larger of the annular projecting part 25. Further, a difference part 27 in level expanded in the diameter toward the sliding surface side from the non- sliding surface side of the plate base brick 16 is formed on the way of the through-hole inserting part 26. A difference surface 28 in level supported by abutting on the difference part 27 in level, is formed in the through-hole 18.

10. 发明专利

JPH06135765A PRODUCTION OF REFRACTORY 失效
公开(公告)号：JPH06135765A
公开(公告)日：1994-05-17
申请号：JP26814591
申请日：1991-07-18
申请人： KUROSAKI REFRACTORIES CO , DOW CORNING TORAY SILICONE
发明人： HARADA TSUTOMU , NITAWAKI SOUICHIROU , HATANAKA SHINJI , KURIZUKA SEIJIROU , AKAMATSU SHOJI , MURAKAMI ICHIRO
IPC分类号： C04B35/632 , C04B35/00 , C08L61/04 , C08L61/14
摘要： PURPOSE:To produce a refractory free from the deterioration of strength in a medium temp. range at high productivity by mixing a specific silicone modified phenolic resin as a binder with a fireproofing material and heating to harden and integrate. CONSTITUTION:An organic silicone compound (e.g. methylmethoxysilane) of 50-500 pts.wt. having silicon atom bonding hydrolyzable group is mixed with 100 pts.wt. phenolic resin (e.g. novolak type phenolic resin) and a condensation reaction catalyst is added thereinto and stirred at a temp. above the melting point of the phenolic resin for 2-10 hours. The reaction mixture is used as it is or after hydrolyzing with water and condensing. A raw material of refractory conventionally named a fireproofing aggregate or fire resistant material is used as the fireproofing material. The compounding ratio of the fireproofing material to the silicone modified phenolic resin is 100:(1-20) by weight. The mixture is filled into a prescribed metal die, press molded and hardened at 100-50 deg.C. The obtained refractory is free from the deterioration of strength in the medium temp. range of 500-1300 deg.C.

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