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1. 发明专利

JPH09132470A THERMAL SPRAYING REPAIRING MATERIAL 失效
公开(公告)号：JPH09132470A
公开(公告)日：1997-05-20
申请号：JP31719495
申请日：1995-11-10
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： MITSUI HARUO , KISHI TADAKATSU , NAKAJIMA MASAYOSHI , YAMAZAKI SADAYUKI , TANABE YOICHI , YUMOTO TOSHIHIDE , ANDO TAKESHI , TAKAHIRA TAKUYA , KASAOKA HARUKI
IPC分类号： C04B35/66 , C10B29/06
摘要： PROBLEM TO BE SOLVED: To safely repair the refractor wall of a furnace, etc., by theraml spraying with good adhesion and without lowering the strength of the applied body. SOLUTION: This thermal spraying repairing material is hot-supplied into a gaseous oxygen current to melt a refractory powder by the combustion of metallic silica, and repairing is conducted. The material contains 10-30wt.% metallic silicon in total and contains 5-10wt.% metallic silicon having

2. 发明专利

JPH05345679A 失效
公开(公告)号：JPH05345679A
公开(公告)日：1993-12-27
申请号：JP15250792
申请日：1992-06-11
申请人： KAWASAKI REFRACTORIES CO LTD , KAWASAKI STEEL CO
发明人： MITSUI HARUO , YUMOTO TOSHIHIDE , EBISAWA RITSU
IPC分类号： B22D41/02 , C04B35/66
摘要： PURPOSE:To increase adhesive strength and prolong life of an castable refractory by applying a specific adhesive material to the surface of brick, etc., containing graphite for lining of molten metal vessel and then repairing. CONSTITUTION:At least one or more kinds of a phosphate based aqueous solution, a sodium silicate based aqueous solution, a colloidal silica based aqueous solution, a calcium lactate based aqueous solution and a aluminum lactate based aqueous solution are mixed with 1-10wt.% pitch powder, 0.5-2wt.% B4C powder and 0.5-2wt.% SiC powder to provide a slurry-like adhesive material. Then the slurry adhesive material 7 is applied to a fused and damaged part of Al2O3-C brick 9 of a slag line part of a lining refractory 6 of a ladle 10 and then an Al2O3 spraying refractory 8 is sprayed thereto to carry out pretreatment for repair and application of the castable refractory.

3. 发明专利

JPH08176645A GAS BLOWING IN PLUG 失效
公开(公告)号：JPH08176645A
公开(公告)日：1996-07-09
申请号：JP33610294
申请日：1994-12-22
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： YUMOTO TOSHIHIDE , AOYAMA MITSUTERU
IPC分类号： C21C7/072
摘要： PURPOSE: To prevent the leakage of steel with damaging the characteristics of a through hole plug by providing a gas blowing in plug 1 to blow the gas from the bottom part of a container for the molten metal. CONSTITUTION: In a gas blowing in plug 1 to blow the gas in the molten metal, a porous refractory part 4 to introduce the gas into a through hole 2 is arranged on the lower part of high densiness refractory part 3 in which the through hole 2 is made. The thickness of the porous refractory part 4 is

4. 发明专利

JPH04124212A PRODUCTION OF PLUG FOR GAS BLOWING 失效
公开(公告)号：JPH04124212A
公开(公告)日：1992-04-24
申请号：JP24485790
申请日：1990-09-14
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： YUMOTO TOSHIHIDE , YOSHIDA KIYOSHI , OGUCHI MASAO
IPC分类号： C21C5/48 , B22D1/00 , C21C7/072
摘要： PURPOSE:To easily produce a plug for gas blowing by applying, in a vertical direction, a solution containing sublimable substance to the side face of a conical inner sheath made of refractory, filling an outer sheath onto the above, removing the sublimable substance by means of heating, and forming slits. CONSTITUTION:A truncated cone-shaped inner sheath 2 in which the upper cross section is smaller than the lower cross section is formed of a dense high alumina refractory castable containing >=95% Al2O3. A solution prepared by dissolving a sublimable substance, such as naphthalene, benzoic acid, and camphor, by a solvent, such as ether, is applied to the side face of the above inner sheath 2 into the state of strips 4 at prescribed spaces in a vertical direction. Subsequently, an outer sheat 3 of high alumina refractory consisting of the same material as the above inner sheath 2 is further formed on the above surface, and then, the sublimable substance is sublimed and removed by means of heating up to 110-220 deg.C, by which slits 5 for gas blowing are formed. By this method, a plug 1 for gas blowing excellent in strength and durability can be produced.

5. 发明专利

JPH0885816A MANUFACTURE OF GAS BLOWING PLUG 失效
公开(公告)号：JPH0885816A
公开(公告)日：1996-04-02
申请号：JP25151794
申请日：1994-09-19
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： UCHIDA YASUYUKI , OGAWA KAZUMASA , YUMOTO TOSHIHIDE , OKAMOTO TAKESHI
IPC分类号： B22D1/00 , B28B21/04 , B28B23/00 , C21C7/072 , F27D3/16
摘要： PURPOSE: To easily and precisely manufacture a gas blowing plug in a short time by inserting a porous brick part connected to a gas supplying pipe into a molding flask and positioning the brick part through a center position setting jig abutting on the gas supplying pipe and the molding flask. CONSTITUTION: The porous brick part 2 is connected to the gas supplying pipe 3 and inserted into the molding flask 5. Successively, the outside part of the center position setting jig 6 is allowed to abut on the outer peripheral part of the molding flask 5 and also, the inside part thereof is allowed to abut on the outer peripheral part of the gas supplying pipe 3. This center position setting jig 6 has a stepped part 8 engaged with the outer peripheral part of the molding flask 5 on the outside part of the sectoral jig body 7 and has an arcuate part 9 fitted to the outer periphery of the gas supplying pipe 3 in the inside part thereof. By this constitution, the gas supplying pipe 3 is accurately positioned on the center of the molding flask 5. In this condition, the castable refractory 4 is supplied into the molding flask 5 and filled up around the porous brick part 2. By this method, the gas blowing plug for blowing stirring gas into molten metal is manufactured with the gas supplying pipe 3 accurately arranged at the center position.

6. 发明专利

JPH07195320A MANUFACTURE OF GAS BLOWING PLUG 失效
公开(公告)号：JPH07195320A
公开(公告)日：1995-08-01
申请号：JP34984693
申请日：1993-12-29
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： YUMOTO TOSHIHIDE , OGAWA KAZUMASA , ISHII HIROMASA , OKAMOTO TAKESHI
IPC分类号： B22D1/00 , B28B1/14 , B28B7/18 , B28B7/34 , C21C7/072 , F27D3/16
摘要： PURPOSE:To form a gas blowing hole of a gas blowing plug into a thin slit with a high precision. CONSTITUTION:A gas blowing plug 1 is formed in such a manner that a plastic sheet is stuck to side faces of an interior material 2 made of a close-grained refractory material having plate-like or bar-like or pillar-like shape and the periphery of the interior material 2 is covered with an exterior material 3 made of monolithic refractory. A plug body 6 made of the interior material 2 covered with the exterior material 3 is heated, and the thermoplastic sheet stuck to the interior material 2 is dissolved so as to form a slit 5 for blowing a required gas, so that a gas blowing plug which has durability and provides a required quantity of gas flow rate can be manufactured.

7. 发明专利

JPH05139850A CASTABLE REFRACTORY 失效
公开(公告)号：JPH05139850A
公开(公告)日：1993-06-08
申请号：JP33150191
申请日：1991-11-19
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： YUMOTO TOSHIHIDE , MITSUI HARUO , KONDO TOSHIHIKO , ARIYOSHI HIROSHI
IPC分类号： C04B35/66 , C04B22/12 , C04B28/06
摘要： PURPOSE:To obtain a castable refractory prevented from efflorescence development without impairing its setting retardancy and maintaining its surface favorably, by using alumina cement as binder formulated with a small amount of lithium fluoride. CONSTITUTION:The objective refractory can be obtained by using alumina cement as binder which is incorporated with 0.1-5 pts.wt., based on 100 pts.wt. of the alumina cement, of lithium fluoride. During the setting process, carbon dioxide in air reactive with the Ca component in the alumina cement is absorbed into the lithium fluoride. Thereby, CaCO3 deposition, i.e., efflorescence, can be prevented, maintaining the surface of the refractory in a favorable manner.

8. 发明专利

JPH09122900A BAG CONTAINER FOR NOZZLE PLUGGING 失效
公开(公告)号：JPH09122900A
公开(公告)日：1997-05-13
申请号：JP30197095
申请日：1995-10-25
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： SATOU NOBUYUKI , MITSUI HARUO , YUMOTO TOSHIHIDE , OKUHASHI TERUYA
IPC分类号： B65D81/26 , B22D41/46
摘要： PROBLEM TO BE SOLVED: To eliminate the impossibility of opening hole by developing the bridging phnomenon with a nozzle plugging material plugged in the nozzle at a spouting hole part of a molten metal vessel of ladle, tundish, etc. SOLUTION: Plural air-flowing holes 2 are formed at the upper side and the lower side in a bag container 1 of nylon bag, etc., for filling up the nozzle plugging material 3 plugged into the nozzle at the spouting hole part of molten metal in the molten metal vessel of the ladle, tundish, etc. Further, the air flowing holes 2 are made to the diameter having grain diameter or smaller of the nozzle plugging material 3, and even if the bag containers 1 are piled, it can be avoided such condition as the nozzle plugging materials 2 become press-compact.

9. 发明专利

JPH08175875A CASTABLE REFRACTORY 失效
公开(公告)号：JPH08175875A
公开(公告)日：1996-07-09
申请号：JP33820094
申请日：1994-12-26
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： YUMOTO TOSHIHIDE , AOYAMA MITSUTERU
IPC分类号： C04B35/66
摘要： PURPOSE: To obtain a castable refractory capable of giving a working body developing few cracks without impairing the operability in its casting work. CONSTITUTION: This castable refractory contains 2-8wt.% of alumina cement and 3-27wt.% of spherical mullite particles =60wt.% of Al2 O3 and

10. 发明专利

JPH04332387A SPRAYING METHOD FOR REFRACTORY MATERIAL 失效
公开(公告)号：JPH04332387A
公开(公告)日：1992-11-19
申请号：JP12670791
申请日：1991-04-30
申请人： KAWASAKI REFRACTORIES CO LTD
发明人： MITSUI HARUO , YUMOTO TOSHIHIDE , YOSHIMURA MATSUICHI , OGUCHI MASAO , MUNETOMO SATOO , HANAOKA KAN
IPC分类号： C21B7/06 , F27D1/16
摘要： PURPOSE:To prevent clogging of a nozzle by a method wherein aggregate and mortar, which are supplied to a spray nozzle through different routes, are mixed in the spray nozzle while curing agent, supplied through further different route, is added to the aggregate and mortar at the vicinity of the tip end of the spray nozzle. CONSTITUTION:Aggregate 40 and mortar 20 are supplied to a spray nozzle 1 through different routes and are mixed in a mixing chamber 14 situated at the root of the spray nozzle 1. Curing agent 30, supplied to the spray nozzle 1 through a further different route, is blown into the spray nozzle 1 from a curing agent blowing part 13 together with high-pressure air 50. 1 Then, the curing agent 30 is added to the aggregate 40 and the mortar 20 at the vicinity of the tip end of the spray nozzle 1 through a space 11 surrounded by a rubber tube 2 and the main body of the spray nozzle 1. Accordingly, the curing agent 30 will never be contacted with the aggregate 40 and/or mortar 20 and will never be cured in the nozzle 1 whereby the clogging of the nozzle 1 can be prevented.

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