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公开(公告)号：US11821691B2
公开(公告)日：2023-11-21
申请号：US17277149
申请日：2019-09-19
CPC分类号： F27D3/16 , C21C5/34 , C21C5/48 , F27D2003/161 , F27D2003/169 , F27D2027/002
摘要： A gas injection nozzle refractory with one or more gas injection small metal tubes buried therein has improved durability. The gas injection nozzle refractory includes a MgO—C central refractory with a small metal tube buried therein, and a MgO—C peripheral refractory surrounding the central refractory. The central refractory on a plane of the gas injection nozzle refractory has an external shape of a circle with a radius in the range of R+10 to R+150 mm concentric with a virtual circle with a minimum radius surrounding all buried small metal tubes, R mm being a radius of the virtual circle.
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公开(公告)号：US10799943B2
公开(公告)日：2020-10-13
申请号：US16303308
申请日：2018-03-19
发明人： Erika Nakatani , Yukimasa Iwamoto
IPC分类号： B22D11/111 , C21C7/076 , C09K5/18 , B22D11/108 , B22F9/02
摘要： A method of producing an exothermic mold powder in a form of sprayed granules of the present invention includes spray-drying into granules, an aqueous slurry containing: a raw material blend; and a metal silicon powder and/or a silicon alloy powder, the method comprising adjusting the pH of the aqueous slurry to 13 or less.
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公开(公告)号：US20090286668A1
公开(公告)日：2009-11-19
申请号：US12094938
申请日：2006-11-24
IPC分类号： C04B35/04
CPC分类号： F27D1/0006 , C04B35/013 , C04B35/1015 , C04B35/103 , C04B35/62635 , C04B35/62665 , C04B35/6309 , C04B35/6316 , C04B35/6365 , C04B2235/3201 , C04B2235/3206 , C04B2235/3222 , C04B2235/3418 , C04B2235/3427 , C04B2235/349 , C04B2235/5427 , C04B2235/5472 , C04B2235/602 , C04B2235/604 , C04B2235/72 , C04B2235/721 , C04B2235/80 , C04B2235/96 , C04B2235/9669 , F27D1/04
摘要： A refractory brick having durability equal to alumina-magnesia castable materials, which is especially suitable for a ladle for steel making is provided. A refractory brick prepared by using an alumina raw material and a magnesia raw material containing 90% by mass or more of a fine powder of not more than 0.5 mm, press molding and then heat treating at 100° C. or higher and not higher than 1,150° C., the refractory brick containing Al2O3 and MgO in a total sum of 90% by mass or more, from 4 to 16% by mass of MgO, from 0.5 to 5% by mass of SiO2, and Na2O and K2O in a total sum of from 0.3 to 2% by mass, with the remainder being inevitable impurities and Al2O3.
摘要翻译： 提供耐久性等于氧化铝 - 氧化镁浇注材料的耐火砖，其特别适用于炼钢钢包。 通过使用氧化铝原料和含有90质量％以上的不超过0.5mm的细粉末的氧化镁原料制成的耐火砖，压制成型，然后在100℃以上且不高于 1,150℃，含有Al2O3和MgO的耐火砖总量为90质量％以上，MgO为4〜16质量％，SiO 2为0.5〜5质量％，Na 2 O，K 2 O为 总和为0.3〜2质量％，其余为不可避免的杂质和Al2O3。
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公开(公告)号：US20060124776A1
公开(公告)日：2006-06-15
申请号：US10522680
申请日：2003-07-30
申请人： Osamu Nomura , Masamichi Takai , Masaru Kurisaki , Hidetaka Ogino , Toshio Horiuchi , Shinsuke Inoue
发明人： Osamu Nomura , Masamichi Takai , Masaru Kurisaki , Hidetaka Ogino , Toshio Horiuchi , Shinsuke Inoue
CPC分类号： B22D41/50
摘要： An object of the invention is to provide a casting nozzle in which attachment and deposition of alumina or the like can be prevented while a drift of molten steel can be prevented. The casting nozzle according to the invention is characterized in that the casting nozzle has a molten steel flow hole portion in which “a plurality of independent protrusion portions and/or concave portions” are disposed so that each of the protrusion portions and/or concave portions has a size satisfying the expression (1): H≧2 mm and the expression (2): L>2×H mm [in which “H” shows the maximum height of the protrusion portion or the maximum depth of the concave portion, and “L” shows the maximum length of a base portion of the protrusion portion or concave portion].
摘要翻译： 本发明的一个目的是提供一种铸造喷嘴，其中可以防止氧化铝等的附着和沉积，同时可以防止钢水漂移。 根据本发明的铸造喷嘴的特征在于，铸造喷嘴具有：钢水流动孔部，其中设置有“多个独立的突出部和/或凹部”，使得每个突出部和/或凹部 具有满足式（1）的尺寸：H> = 2mm，表达式（2）：L> 2xHmm [其中“H”表示突出部分的最大高度或凹部的最大深度， “L”表示突出部或凹部的基部的最大长度。
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公开(公告)号：US20040062287A1
公开(公告)日：2004-04-01
申请号：US10673493
申请日：2003-09-30
发明人： Masahiro Moriwaki
IPC分类号： H05B003/00
摘要： The invention provides an electric resistance furnace comprising an axially vertical, hollow center heating element, a center furnace body that comprises a heat-insulating member and is provided for supporting the center heating element, and a preheating means that is provided at a gap from the surface of the center furnace body and comprises a preheating element provided on the inner wall surface of a cylindrical heat-insulating member. A heat-insulating member is located at an upper surface and a lower surface of an outer heat-insulating member located around the preheating member and only on a center axis side of the furnace with respect to the area of projection of the preheating means.
摘要翻译： 本发明提供了一种电阻炉，其包括轴向垂直的中空中心加热元件，中心炉体，其包括绝热构件并且设置用于支撑中心加热元件;以及预热装置，其设置在与 中心炉体的表面，并且包括设置在圆筒形绝热构件的内壁表面上的预热元件。 隔热构件位于预热构件周围的外部隔热构件的上表面和下表面，并且仅位于炉的中心轴侧，相对于预热装置的投影面积。
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公开(公告)号：US6120593A
公开(公告)日：2000-09-19
申请号：US214011
申请日：1998-12-17
IPC分类号： C04B35/01 , C04B35/043 , C04B35/66 , F27D1/16 , C08L95/00
CPC分类号： C04B35/66 , C04B35/013 , C04B35/043 , F27D1/1642
摘要： The hot repair mix according to the present invention comprises p-alkylphenol as an auxiliary fluidizing agent in an amount of 1 to 20 weight parts and a material to form carbon bond in hot working process in an amount of 5 to 40 weight parts to 100 weight parts of a refractory material. It has satisfactory properties such as spreading property, hardenability, adhesive property, property of the finished portion in hot working process, and this leads to improvement of durability of the baking material. Moreover, there is no change over time such as solidification, sedimentation separation, etc. in summer season, and it can be easily transported and stored. Because of easy handling and good workability of this material, baking operation can be accomplished within short time, and it is very useful as a hot repair mix for repairing various types of refinery furnaces, molten metal containers, etc. in hot working process.
摘要翻译： PCT No.PCT / JP98 / 01899 Sec。 371日期1998年12月17日第 102（e）日期1998年12月17日PCT提交1998年4月24日PCT公布。 第WO98 / 50321号公报 日期1998年11月12日根据本发明的热修复混合物包含作为辅助流化剂的对烷基苯酚，其量为1至20重量份，并且在热加工过程中以5至40的量形成碳键的材料 重量份至100重量份的耐火材料。 其具有令人满意的性能，如扩散性，淬透性，粘合性，热加工过程中成品部分的性能，这导致烘烤材料的耐久性得到改善。 此外，夏季也不会有固化，沉淀分离等时间的变化，易于运输和储存。 由于这种材料易于处理和良好的可加工性，烘烤操作可以在短时间内完成，并且作为在热加工过程中修复各种类型的炼油炉，熔融金属容器等的热修复混合物是非常有用的。
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公开(公告)号：US5879579A
公开(公告)日：1999-03-09
申请号：US926134
申请日：1997-09-09
IPC分类号： B22D41/56
CPC分类号： B22D41/56 , Y10S266/01
摘要： A submerged nozzle change device has a slide valve unit 3 which is provided in a molten-metal outlet formed in a lower portion of a molten-metal containing vessel 1 for controlling the outflow of a molten metal. A pair of guide rails 26 for slidably suspending and supporting a holding case 6 mounted on an upper end of a submerged nozzle 5 are swingably supported on the slide valve unit 3 so that one end of each of the guide rails can be pivotally moved upwards and downwards about a shaft 21 while being biased upwards. On the free ends of the guide rails 24, there is provided a pushing cylinder 30 for pushing a new submerged nozzle 51 set on the guide rails 26 to push an old submerged nozzle 52 to the opposite side. A pair of guide rollers 35, which are moved by a piston rod 30a of the pushing cylinder 30, are brought into contact with the upper surfaces of the guide rails 26 to hold the guide rails 26 horizontally until a nozzle hole 52b of the old submerged nozzle 52 is out of register with a nozzle hole 11a of the slide valve unit 3 to close the nozzle hole 11a of the slide valve unit 3. An inclined cam 27 is provided for moving the guide rails 26 downwards until the new submerged nozzle 51 reaches the lower surface of the slide valve unit 3 after the nozzle hole 11a is closed. Thus, it is possible to provide a submerged nozzle change device which can quickly change a submerged nozzle and which can prevent the contact surface of a submerged nozzle from being scratched when a new submerged nozzle is caused to slide to move to a predetermined position.
摘要翻译： 浸没式喷嘴更换装置具有滑阀单元3，该滑阀单元3设置在形成于熔融金属容纳容器1的下部的熔融金属出口中，用于控制熔融金属的流出。 用于可滑动地悬挂和支撑安装在浸没喷嘴5的上端的保持壳体6的一对导轨26可摆动地支撑在滑阀单元3上，使得每个导轨的一端可以向上枢转运动， 同时向上偏置轴21。 在导轨24的自由端设置有用于推动设置在导轨26上的新的浸没喷嘴51的推压缸30，以将旧的浸没喷嘴52推向相对侧。 通过推压缸30的活塞杆30a移动的一对导辊35与导轨26的上表面接触，以将导轨26水平地保持，直到旧的浸没的喷嘴孔52b 喷嘴52与滑阀单元3的喷嘴孔11a脱离，以关闭滑阀单元3的喷嘴孔11a。设置倾斜凸轮27用于向下移动导轨26，直到新的浸没喷嘴51到达 喷嘴孔11a关闭后的滑阀单元3的下表面。 因此，可以提供一种浸没式喷嘴更换装置，其能够快速地改变浸没的喷嘴，并且当使新的浸没喷嘴滑动以移动到预定位置时，可以防止浸没喷嘴的接触表面被划伤。
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公开(公告)号：US5495176A
公开(公告)日：1996-02-27
申请号：US350668
申请日：1994-12-07
申请人： Akira Shiranita , Susumu Nakayama
发明人： Akira Shiranita , Susumu Nakayama
CPC分类号： G01N27/07
摘要： In a cell for measuring electrical conductivity, a container (2) and electrodes (1) are made of ceramics having high corrosion-resistant property. Insulating ceramics are used for the container (2), and conductive ceramics having resistance value of several k .OMEGA..cm or less is used for the electrodes (1). The ceramics are far superior to glass in corrosion resistant property and mechanical strength under normal as well as high temperature conditions. Further, the cell is produced at lower cost than the one made of precious metal and has high corrosion resistant property and can be used under strong acid or strong alkaline conditions. It has high mechanical strength and can be used under high pressure and high temperature conditions and produced at low cost because precious metal is not used for the electrodes.
摘要翻译： PCT No.PCT / JP92 / 00974 Sec。 371日期：1993年4月2日 102（e）日期1993年4月2日PCT提交1992年7月31日PCT公布。 出版物WO93 / 03354 日期：1993年2月18日。在用于测量导电性的电池中，容器（2）和电极（1）由具有高耐腐蚀性的陶瓷制成。 对于容器（2）使用绝缘陶瓷，电极（1）使用电阻值为几ΩΩ·cm以下的导电性陶瓷。 在正常和高温条件下，陶瓷的耐腐蚀性和机械强度远优于玻璃。 此外，电池的制造成本低于由贵金属制成的电池，并且具有高耐腐蚀性，并且可以在强酸或强碱性条件下使用。 它具有高机械强度，可以在高压和高温条件下使用，并且由于贵金属不用于电极而以低成本生产。
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公开(公告)号：US5238158A
公开(公告)日：1993-08-24
申请号：US784401
申请日：1991-12-23
申请人： Kenji Yamamoto , Shigeru Ando , Tadao Taniguchi , Mototsugu Osada
发明人： Kenji Yamamoto , Shigeru Ando , Tadao Taniguchi , Mototsugu Osada
CPC分类号： B22D41/56
摘要： This invention concerns an apparatus for enabling exchange of an immersion nozzle seated in a tundish and used for casting of a molten metal from a molten metal container to be carried out very easily and quickly, which apparatus comprises rails (4) laid so as to approximate closely to a molten metal casting outlet nozzle (2) of a molten metal container (1), a self-propelling truck (5) adapted to travel on the rails (4), retainer parts (7) mounted on the truck (5) and adapted to retain an immersion nozzle (3) at the leading terminal thereof, and a movable arm (6) provided with a cleaning device (18) for cleaning the lower terminal surface of the outlet nozzle (2) after removal of a used immersion nozzle.
摘要翻译： 本发明涉及一种用于能够更换位于中间包中并用于从熔融金属容器铸造熔融金属以便非常容易和快速地进行的浸入式喷嘴的装置，该装置包括放置成近似的轨道（4） 与熔融金属容器（1）的熔融金属铸造出口喷嘴（2）紧密接合，适于在轨道（4）上行进的自推进卡车（5），安装在卡车（5）上的保持器部件（7） 并且适于将浸入式喷嘴（3）保持在其引导端，以及设置有清洁装置（18）的可移动臂（6），用于清除所述出口喷嘴（2）的下端子表面 喷嘴。
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公开(公告)号：US4985378A
公开(公告)日：1991-01-15
申请号：US240278
申请日：1988-09-06
申请人： Kenji Ichikawa , Noboru Tsukamoto , Eishi Iida , Yuji Yoshimura , Junichi Inoue
发明人： Kenji Ichikawa , Noboru Tsukamoto , Eishi Iida , Yuji Yoshimura , Junichi Inoue
IPC分类号： B22D11/10 , B22D41/54 , C04B35/00 , C04B35/10 , C04B35/103 , C04B35/64 , C04B35/657 , C04B35/80
摘要： A carbon-containing refractory is formed by mixing 1-10 weight % of silicon nitride, 1-35 weight % of carbon, and a remainder of a refractory raw material, molding the mixture into a molded body, and burning the molded body such that fine whiskers of silicon carbide are uniformly distributed within the matrix.
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