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1.发明公开
公开(公告)号：EP1099230A1
公开(公告)日：2001-05-16
申请号：EP99926148.0
申请日：1999-06-03
CPC分类号： C21D8/1266 , C21D8/1233 , C21D8/1261 , C21D8/1272 , C21D8/1277
摘要： A method of making electrical steel strip characterized by low core loss and high permeability in the rolling direction includes the steps of: hot rolling a slab of an electrical steel composition into a strip, hot band annealing in a temperature range effective to coarsen the grains sufficient to improve magnetic properties in a rolling direction of the strip, cold rolling, batch annealing in a temperature range effective to produce a batch annealed grain size of not greater than 40 νm and, preferably not greater than 20 νm, and temper rolling to provide the strip with a transfer surface roughness (Ra) of less than 49 νin. Electrical steel articles are manufactured from the steel strip upon final annealing. The electrical steel articles have a grain texture including a {110}∫001⊃ orientation and improved permeability in the rolling direction.
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3.发明公开Foamy slag process using multi-circuit top-blowing oxygen lance 失效Schaumschlackeverfahren unter Verwendung einer Sauerstoffaufblaslanze mit Mehrfachkreislauf
公开(公告)号：EP0874060A1
公开(公告)日：1998-10-28
申请号：EP98300199.1
申请日：1998-01-13
发明人： Kim, Chung S. ,
IPC分类号： C21C5/46
CPC分类号： C21C5/4606 , C21C5/305
摘要： A method of improving post-combustion heat recovery in a vessel containing a charge of molten ferrous metal and slag includes the use of a lance for the introduction of oxygen gas into the charge. The method includes blowing oxygen into the charge through at least one first nozzle of the lance for refining the molten metal into steel. Oxygen is blown through at least one second nozzle of the lance from at least one location spaced above the first nozzle at an oxygen flow rate effective to produce foamy slag in an amount for obtaining a post-combustion heat transfer efficiency of at least about 40% without appreciable overflow of the slag from the vessel. The oxygen flow rate from the second nozzle is at a minimum at about a starting point of a peak decarburization period of the charge. Iron oxide containing pellets may also be added to the charge. In this case, the oxygen flow rate from the first nozzle may be reduced while the iron oxide containing material is being added, and the reduced oxygen flow may be replenished with an inert gas.
摘要翻译： 一种改善在含有熔融黑色金属和炉渣的容器中的燃烧后热回收的方法包括使用喷枪将氧气引入电荷。 该方法包括通过喷枪的至少一个第一喷嘴将氧吹入进料，以将熔融金属精炼成钢。 氧气穿过喷枪的至少一个第二喷嘴从至少一个位置以第一喷嘴上方间隔开，氧气流速有效地产生泡沫炉渣，用于获得至少约40％的燃烧后传热效率， 没有来自容器的渣的明显溢出。 来自第二喷嘴的氧气流速在电荷的峰值脱碳期的大约起始点处最小。 还可以将含氧化铁的颗粒加入到电荷中。 在这种情况下，可以减少来自第一喷嘴的氧气流量，同时添加含氧化铁的材料，还可以用惰性气体补充减少的氧气流量。
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公开(公告)号：EP0078672B1
公开(公告)日：1986-10-08
申请号：EP82305748.4
申请日：1982-10-28
发明人： Harris, Richard M.
IPC分类号： G01N27/90
CPC分类号： G01N27/9006 , Y10S165/903
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公开(公告)号：EP0078672A1
公开(公告)日：1983-05-11
申请号：EP82305748.4
申请日：1982-10-28
发明人： Harris, Richard M.
IPC分类号： G01N27/90
CPC分类号： G01N27/9006 , Y10S165/903
摘要： An eddy current system and method is discloed for detecting flaws in hot pipe product. The system includes a detector test head (22) having a heat shield (24) defining a generally cylindrical inner wall through which the pipe passes longitudinally. The test head includes structure (50, 62, 64) for spirally directing water onto the inside surface without contacting the hot pipe as it passes through the heat shield. Debris is thereby removed from the space between the shield and the pipe, and the test head Is effectively cooled and shielded from the heat of the pipe. Where the pipe is heated above its Curie temperature, such that the pipe is rendered non-magnetic, no normally required saturation coil is needed to magnetically saturate the pipe for eddy current testing, because the coolant flowing over the inner wall cools the test head but does not lower pipe temperature below the Curie point.
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公开(公告)号：EP0958385A1
公开(公告)日：1999-11-24
申请号：EP97925712.0
申请日：1997-05-23
CPC分类号： C22B1/2406 , C21B13/0046 , C22B7/02 , Y02P10/216 , Y10S75/961 , Y10S75/962
摘要： A method of agglomerating oil-containing steel mill waste includes the step of combining a first steel mill waste component with a second steel mill waste component to form a mixture. The first waste component includes substantially dry non-oily steel mill waste (30) and the second waste component includes oil-containing steel mill waste (32). The first waste component and the second waste component are agglomerated.
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公开(公告)号：EP0950453A1
公开(公告)日：1999-10-20
申请号：EP98121519.7
申请日：1998-11-13
IPC分类号： B22D41/50
CPC分类号： B22D41/50
摘要： A submerged entry nozzle (10) for introducing molten steel into a casting mold is disclosed. The nozzle includes a nozzle structure defining a central bore (16) and two transverse exit ports (20a, 20b) communicating with the bottom of the central bore, the central bore terminating at an upwardly dish-shaped bottom surface (18) that extends to the periphery of the nozzle structure and forms the lower surface regions (23a, 23b) of the exit ports, whereby molten steel flowing across the upwardly dish-shaped bottom surface is directed outwardly and upwardly from the nozzle structure.
摘要翻译： 公开了一种用于将钢水引入铸模的浸入式喷嘴（10）。 喷嘴包括限定中心孔（16）的喷嘴结构和与中心孔的底部连通的两个横向出口（20a，20b），中心孔终止于向上的碟形底表面（18），该底部表面延伸到 喷嘴结构的周边，并形成出口的下表面区域（23a，23b），由此流过向上盘形底表面的钢水从喷嘴结构向外和向上指向。
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8.发明公开Preventing skull accumulation on a steelmaking lance 失效Unterdrückender Bildung vonLanzenbärenbei der Stahlerzeugung
公开(公告)号：EP0816517A1
公开(公告)日：1998-01-07
申请号：EP97304189.0
申请日：1997-06-16
发明人： Kim, Chung S. , Goodson, Ken M.
CPC分类号： F27D1/1694 , C21C5/4693
摘要： A self-cleaning lance (10) includes a lance body (12) elongated along a longitudinal axis and having an upper end portion (14) and a lower end portion (16), the lower end portion (16) being spaced apart from the upper end portion (14) along the longitudinal axis. One or more main nozzles (18) are located proximal to the lower end portion (16) and are adapted to release an oxygen-containing gas. One or more deskulling nozzles (20) are spaced upwardly from the lower end portion (16) and are adapted to release a deskulling gas. The lance body (12) has a first portion (28) that extends axially from the deskulling nozzles (20) to the main nozzles (18) and a second portion (29) above the deskulling nozzles (20). The first portion (28) has a smaller outer perimeter than the outer perimeter of the second portion (29). Each of the deskulling nozzles (20) extends by an angle of not greater than 25 degrees with respect to the longitudinal axis.
摘要翻译： 自清洁喷枪（10）包括沿着纵向轴线延伸并具有上端部分（14）和下端部分（16）的喷枪体（12），下端部分（16）与 上端部分（14）。 一个或多个主喷嘴（18）位于下端部分（16）的近侧并适于释放含氧气体。 一个或多个仰卧喷嘴（20）从下端部分（16）向上间隔开，并且适于释放踏板气体。 喷枪本体（12）具有从仰卧喷嘴（20）轴向延伸到主喷嘴（18）的第一部分（28）和在仰卧喷嘴（20）上方的第二部分（29）。 第一部分（28）具有比第二部分（29）的外周边更小的外周边。 每个俯仰喷嘴（20）相对于纵向轴线延伸不大于25度的角度。
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公开(公告)号：EP0685000A1
公开(公告)日：1995-12-06
申请号：EP93906097.0
申请日：1993-02-19
CPC分类号： C21C5/4653 , B22D43/001 , C21C2005/468
摘要： The present invention provides a new and improved method and apparatus for tapping molten metal through the top hole of a metallurgical vessel (2). The apparatus utilizes a ladle or a BOF furnace or other metallurgical vessel (2) used for the containment of molten metal. At least one extension drive mechanism (24) is attached to the support structure (6) position the distal end of a lance (32) within the vessel (2) a predetermined distance above the surface (16) of its contents. The lance (32) is connected to an inert gas source (26) such as Argon. Once the lance is properly positioned, the inert gas is directed onto the surface (16) of the molten metal to prevent the slag from entering the tap hole (4). An alignment drive (30) can also be attached to the support structure (6) to adjust the position of the extension drive (24) relative to the vessel (2) so that the lance (32) may be properly positioned within the vessel (2) above the tap hole (4). The extension (24) and alignment (30) drives are operatively controlled by a computerized controller (22) which interfaces with the sensors to monitor the physical characteristics of the vessel (2). The controller (22) operatively controls the drives to position the lance (32) a predetermined distance above the tap hole (4) of the vessel (2).
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公开(公告)号：EP0047239B1
公开(公告)日：1986-04-09
申请号：EP80901730.4
申请日：1980-03-03
IPC分类号： G01N29/04
CPC分类号： G01N29/221 , G01N29/28
摘要： An ultrasonic flaw detector for detecting irregularities in an object, such as a pipe (10), having a segment of annular cross-section. The detector includes a transducer (20) with an involute transmitting surface (116) for sending ultrasonic signals into the object at equal non-radial angles of incidence. The detector further includes transmission apparatus (122) for maintaining a constant physical relationship between the transducer (20) and the pipe and interpretive apparatus (300) for correlating reflections of ultrasonic signals within the object with irregularities.
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