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公开(公告)号：US4946083A
公开(公告)日：1990-08-07
申请号：US291497
申请日：1988-12-29
申请人： Mark K. Fishler , Jean-Marie Koten , Pascal Dubois
发明人： Mark K. Fishler , Jean-Marie Koten , Pascal Dubois
CPC分类号： B22D41/186
摘要： A one-piece refractory stopper rod has an axial bore formed therein for the introduction of inert gas into molten steel within a tundish. A metal bushing insert is compressed into the refractory stopper rod and has a threaded bore which is positioned coaxially with the bore of the stopper rod body. A metal attachment rod having an axial bore therethrough and a threaded lower shank portion is secured within the threaded bore of the metal bushing insert. The metal attachment rod has an upper threaded shank which is adapted to be secured to a stopper rod lifting mechanism associated with the tundish. The metal rod further includes a flanged portion intermediate the upper and lower shank portions which carries an annular chamfered surface. The annular chamfered surface faces a like annular chamfered surface formed in the bore of the stopper rod to define a gas-tight seal at a sealing interface therebetween. The upper shank includes an internally threaded portion adapted to receive a threaded fitting for the introduction of a pressurized inert gas to the stopper rod bore. The attachment between the metal rod and the refractory stopper rod provides increased strength, while minimizing gas leakage and air infiltration compared to prior stopper rod attachment configurations.
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公开(公告)号：US5024422A
公开(公告)日：1991-06-18
申请号：US549444
申请日：1990-07-06
申请人： Mark K. Fishler , Jean-Marie Koten , Pascal Dubois
发明人： Mark K. Fishler , Jean-Marie Koten , Pascal Dubois
CPC分类号： B22D41/186
摘要： A one-piece refractory stopper rod has an axial bore formed therein for the introduction of inert gas into molten steel within a tundish. A metal bushing insert is copressed into the refractory stopper rod and has a threaded bore which is positioned coaxially with the bore of the stopper rod body. A metal attachment rod having an axial bore therethrough and a threaded lower shank portion is secured within the threaded bore of the metal bushing insert. The metal attachment rod has an upper threaded shank which is adapted to be secured to a stopper rod lifting mechanism associated with the tundish. The metal rod further includes a flanged portion intermediate the upper and lower shank portions which carries an annular chamfered surface. The annular chamfered surface faces a like annular chamfered surface formed in the bore of the stopper rod to define a gas-tight seal at a sealing interface therebetween. The upper shank includes an internally threaded portion adapted to receive a threaded fitting for the introduction of a pressurized inert gas to the stopper rod bore. The attachment between the metal rod and the refractory stopper rod provides increased strength, while minimizing gas leakage and air infiltration compared to prior stopper rod attachment configurations.
摘要翻译： 单件耐火塞棒具有形成在其中的轴向孔，用于将惰性气体引入中间包内的钢水中。 金属套管插入件被压入耐火塞杆中，并且具有与塞杆主体的孔同轴定位的螺纹孔。 具有穿过其中的轴向孔的金属附接杆和螺纹下部柄部分固定在金属衬套插入件的螺纹孔内。 金属连接杆具有上螺纹杆，其适于固定到与中间包相关联的止动杆提升机构。 金属杆还包括带有环形倒角表面的上和下柄部分中间的凸缘部分。 环形倒角表面面对形成在塞杆的孔中的类似的环形倒角表面，以在它们之间的密封界面处限定气密密封。 上柄包括内螺纹部分，其适于容纳用于将加压惰性气体引入塞杆孔的螺纹接头。 金属棒和耐火塞棒之间的连接提供了增强的强度，同时与先前的塞杆连接构造相比最小化了气体泄漏和空气渗透。
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公开(公告)号：US4871698A
公开(公告)日：1989-10-03
申请号：US120733
申请日：1987-11-09
申请人： Mark K. Fishler , Dale B. Hoggard
发明人： Mark K. Fishler , Dale B. Hoggard
IPC分类号： C04B35/597
CPC分类号： C04B35/597
摘要： The invention is directed to improved carbon containing refractory compositions and sintered bodies made therefrom which are particularly resistant to slag and metal erosion and to thermal shock. This is achieved by combining grains or powders of SiAlON and/or silicon nitride with elemental carbon in the form of graphite, carbon black or charcoal. The particulate materials are mixed with a carbonaceous binder such as resin or pitch, pressed to shape and fired in a reducing atmosphere. Small amounts of antioxidants are also added to protect the carbon bond phase against slag attack. Additional amounts of a less expensive refractory grain or powder are also optionally added to the mix to dilute the more expensive SiAlON and/or silicon nitride.
摘要翻译： 本发明涉及改进的含碳耐火组合物和由其制成的烧结体，其特别是耐渣和金属侵蚀以及热冲击。 这是通过将SiAlON和/或氮化硅的晶粒或粉末与石墨，炭黑或木炭形式的元素碳组合来实现的。 将颗粒材料与碳质粘合剂如树脂或沥青混合，在还原气氛中压制成形并烧制。 还加入少量的抗氧化剂以保护碳结合相免受熔渣侵蚀。 还可以将额外量的较便宜的耐火材料颗粒或粉末加入到混合物中以稀释更昂贵的SiAlON和/或氮化硅。
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公开(公告)号：US4836508A
公开(公告)日：1989-06-06
申请号：US189660
申请日：1988-05-03
申请人： Mark K. Fishler
发明人： Mark K. Fishler
IPC分类号： B22D11/10 , B22D11/106 , B22D41/58
CPC分类号： B22D41/58
摘要： A ladle shroud has a co-pressed porous ring for the introduction of an inert gas at the sealing joint between the ladle shroud and a mating ladle collector nozzle. The dense body of the ladle shroud and the co-pressed porous ring are of similar carbon-bonded graphite refractory grain compositions and have similar carbon containing binder systems to improve the bond between the ring and body components. The dense body further includes a continuous integral ledge portion which, abuts a top surface of the porous ring to seal the top of the ring against unwanted inert gas leakage.
摘要翻译： 钢包护罩具有用于在钢包护罩和配合浇包收集器喷嘴之间的密封接头处引入惰性气体的共挤多孔环。 钢包护罩和共挤多孔环的致密体具有类似的碳键合石墨耐火谷物组合物，并且具有类似的含碳粘合剂体系以改善环和组分之间的结合。 密实体还包括连续的整体凸缘部分，其邻接多孔环的顶表面以密封环的顶部以防止不希望的惰性气体泄漏。
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公开(公告)号：US4791978A
公开(公告)日：1988-12-20
申请号：US125636
申请日：1987-11-25
申请人： Mark K. Fishler
发明人： Mark K. Fishler
CPC分类号： B22D41/186
摘要： A one-piece carbon-bonded graphite refractory stopper rod for use in continuous casting of molten metal includes a copressed body portion with an integral porous nose section. Through a gap grain sizing technique, the mean pore size of the nose is controlled to preferably about 10 microns to permit an inert gas introduced into the rod to permeate therethrough as a fine dispersion of bubbles in the melt while preventing reverse permeation of molten metal in the event of depressurization of the gas supply. Improved erosion resistance of the nose and lower alumina deposition in the casting nozzle are also achieved.
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公开(公告)号：US4487251A
公开(公告)日：1984-12-11
申请号：US356218
申请日：1982-03-08
申请人： John B. Cahoon , Mark K. Fishler
发明人： John B. Cahoon , Mark K. Fishler
CPC分类号： B22D41/58
摘要： A nozzle is provided having an elongated conduit extending therethrough for delivering molten metal below the surface of a pool of molten material. The nozzle includes facilities for passing a fluid medium, e.g., argon, through its wall members transverse to the direction of molten metal flow into the elongated conduit to retard the accumulation of undesirable formations, e.g., metal oxides, on the inner wall surfaces of the conduit during molten metal flow. In a first embodiment, gas permeable wall members define portions of the conduit through which the fluid medium percolates. In a second embodiment, a plurality of small ports are provided in the wall members defining the conduit through which the fluid medium is emitted in the conduit. Preferably, the nozzle also includes a base portion that directs the molten metal flow in an upwardly direction and which has facilities for retarding the accumulation of undesirable formations thereon.
摘要翻译： 提供了一种喷嘴，其具有穿过其延伸的细长导管，用于将熔融金属输送到熔融材料池的表面下方。 喷嘴包括用于使流体介质（例如氩气）通过其横向于熔融金属流动方向的壁构件流入细长管道中的设施，以阻止不期望的地层（例如金属氧化物）在内壁表面上积聚 熔融金属流动期间的导管。 在第一实施例中，气体可渗透的壁构件限定了流体介质穿过的导管的部分。 在第二实施例中，多个小端口设置在限定导管的壁构件中，流体介质通过该导管在管道中被排出。 优选地，喷嘴还包括将熔融金属流沿向上方向引导的基部，并且具有用于延缓其上不期望的结构积聚的设施。
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公开(公告)号：US5060831A
公开(公告)日：1991-10-29
申请号：US477850
申请日：1990-02-12
申请人： Mark K. Fishler , Gilbert Rancoule
发明人： Mark K. Fishler , Gilbert Rancoule
CPC分类号： B22D41/54 , C04B35/66 , C04B2111/00482 , C04B2111/00887 , C04B2111/00939 , C04B2235/3208 , C04B2235/3217 , C04B2235/3244 , C04B2235/422 , C04B2235/9676
摘要： The invention concerns a material for the covering of casting shrouds.It is comprised of a calcareous composition capable of liberating calcium oxide at a temperature at least equal to 1400.degree. C., its calcium content, expressed in calcium oxide, is between ca. 10% and ca. 60% and preferably between ca. 20% and ca. 50%, the said calcareous composition is bound by a binder chosen in the group comprised of those utilizing carbon/carbon bonds by sintering.Application to the metallurgy of ferro-alloys.
摘要翻译： PCT No.PCT / FR89 / 00337 Sec。 371日期1990年2月12日 102（e）日期1990年2月12日PCT申请1989年6月28日PCT公布。 出版物WO90 / 1990年1月11日的日期。本发明涉及一种用于覆盖浇铸罩的材料。 它由能够在至少等于1400℃的温度下释放氧化钙的钙质组合物组成，其钙含量以钙氧化物表示。 10％左右 60％，优选约ca。 20％左右 50％，所述钙质组合物由选自通过烧结利用碳/碳键的组中选择的粘合剂结合。 应用于铁合金冶金。
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公开(公告)号：US5373976A
公开(公告)日：1994-12-20
申请号：US48669
申请日：1993-04-16
IPC分类号： B22D41/32
CPC分类号： B22D41/32
摘要： An erosion resistant refractory mortar composition is described which is suitable for bonding a zirconia insert in an alumina graphite plate of a sliding gate valve. The refractory mortar is made from a mix consisting of, in weight percent, about 50%-85% zirconia; about 15%-50% alumina; up to 5% chromium oxide; up to 6% phosphoric acid plus an effective amount of a binder. Sufficient water is added to provide proper plasticity to the mix.
摘要翻译： 描述了一种耐腐蚀的耐火砂浆组合物，其适用于将氧化锆嵌件接合在滑动闸阀的氧化铝石墨板中。 耐火砂浆由以重量百分比计约50％-85％的氧化锆组成的混合物制成， 约15％-50％氧化铝; 高达5％的氧化铬; 高达6％的磷酸加有效量的粘合剂。 添加足够的水以为混合物提供适当的可塑性。
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公开(公告)号：US5151201A
公开(公告)日：1992-09-29
申请号：US638049
申请日：1991-01-07
摘要： The invention concerns a material for covering the metal contacting surfaces of casting elements such as slide gate valves and casting nozzles and shrouds to resist steel erosion and alumina deposition during the continuous casting of aluminum killed steel.It is comprised of a fused mixture of calcium oxide and zirconia, with a calcium oxide content of between about 20% and about 60% by weight and preferably between about 20% and about 50% by weight, the composition may include a binder producing carbon/carbon bonds by sintering. The material may also include a ceramic bond or may be applied as a fused layer by plasma spraying.
摘要翻译： 本发明涉及一种用于覆盖铸造元件的金属接触表面的材料，例如滑动闸阀和铸造喷嘴和护罩，以在连续铸造铝镇静钢的过程中抵抗钢侵蚀和氧化铝沉积。 它由氧化钙和氧化锆的熔融混合物组成，其氧化钙含量为约20％至约60％重量，优选约20％至约50％重量，该组合物可包括粘合剂生产碳 /碳键。 该材料还可以包括陶瓷键或者可以通过等离子喷涂作为熔融层施加。
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公开(公告)号：US4568007A
公开(公告)日：1986-02-04
申请号：US573295
申请日：1984-01-23
申请人： Mark K. Fishler
发明人： Mark K. Fishler
CPC分类号： B22D41/50
摘要： The present invention provides a refractory tube through which a stream of molten metal is passed during continuous casting which includes an inner refractory member of relatively low thermal expansion and thermal conductivity characteristics and an outer refractory member of high erosion resistance. The cooperation of the inner and outer refractory members results in an end product with a prolonged useful casting life and which does not require preheating prior to use. In a preferred embodiment, the inner refractory member is formed of fused silica and the outer refractory member is formed of alumina graphite and/or zirconia graphite.
摘要翻译： 本发明提供了一种在连续铸造期间熔融金属流通过的耐火管，其包括具有相对低的热膨胀和导热特性的内部耐火构件和具有高耐腐蚀性的外部耐火构件。 内外耐火构件的配合产生最终产品具有延长的有用的铸造寿命，并且在使用之前不需要预热。 在优选实施例中，内耐火构件由熔融二氧化硅形成，外耐火构件由氧化铝石墨和/或氧化锆石墨形成。
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