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公开(公告)号：US20130119094A1
公开(公告)日：2013-05-16
申请号：US13464188
申请日：2012-05-04
IPC分类号： B22D11/06
CPC分类号： B22D11/0622 , B22D11/0642 , B22D41/50
摘要： A method of casting metal strip and equipment therefor where an elongated metal delivery nozzle extending along in a continuous caster with at least one segment having a main portion adapted to deliver molten metal in the casting pool above the nip along the metal delivery nozzle and an end portion adjacent side dams having a reservoir portion with first and second passages adapted to deliver molten metal into a molten metal pool adjacent the side dams while shells are forming on the casting rolls. The first passages are adapted to deliver molten metal shallowly into the casting pool adjacent the side dams, and the second passages adapted to deliver molten metal deeper into the casting pool than the first passages adjacent the side dams to inhibit formation of skulls during the formation of the cast strip during a casting campaign.
摘要翻译： 一种铸造金属带及其设备的方法，其中细长的金属输送喷嘴沿着连铸机延伸，其中至少一个段具有主要部分，该主要部分适于沿着金属输送喷嘴在压区上方的熔池中输送熔融金属， 部分相邻侧坝具有储存部分，其具有第一和第二通道，其适于将熔融金属输送到邻近侧坝的熔融金属池中，同时壳体在铸辊上形成。 第一通道适于将熔融金属浅地输送到邻近侧坝的铸池中，并且第二通道适于将熔融金属输送到比浇筑池更深的第一通道，而不是靠近侧坝的第一通道以在形成期间抑制头骨的形成 铸造活动期间的铸钢带。
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公开(公告)号：US20110253336A1
公开(公告)日：2011-10-20
申请号：US13170394
申请日：2011-06-28
IPC分类号： B22D11/16
CPC分类号： B22D11/0622 , B21B1/463 , B22D11/1206 , B22D11/14
摘要： An apparatus for continuously casting thin strip includes a caster having a pair of casting rolls having a nip there between capable of delivering cast strip downwardly from the nip and an first enclosure capable of forming a protective atmosphere into which the strip can be formed in loop to extend over a plurality of rollers into pinch rolls with the strip having a strain of less than 0.4%, which may be provided by a plurality of rollers at entry of the strip into the pinch rolls to carry the strip into the pinch rolls, with at least a first entry roller having a diameter between 200 and 650 millimeters and being below a majority of other rollers.
摘要翻译： 用于连续铸造薄带的装置包括具有一对铸辊的脚轮，其具有能够从压区向下输送铸造带的第一外壳和能够形成环状的保护气氛的第一外壳 在多个辊子上延伸到夹送辊中，带材具有小于0.4％的应变，其可以由条带进入夹送辊中的多个辊子提供，以将带材带入夹送辊中，其中在 至少一个直径在200和650毫米之间并且低于其它辊的大部分的第一进入辊。
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23.发明申请公开(公告)号：US20110108228A1
公开(公告)日：2011-05-12
申请号：US12916096
申请日：2010-10-29
CPC分类号： B22D11/0665 , B22C9/06 , B22D11/06 , B22D11/0622 , B22D11/0651
摘要： Apparatus and method for continuously casting metal strip includes a pair of casting rolls having casting surfaces with a center portion, edge portions each having average surface roughness between 3 and 7 Ra, and intermediate portion between each edge portion and the center portion, the center portion average surface roughness between 1.2 and 4.0 times the edge portion surface roughness, and the intermediate portions average surface roughness between that of the edge and center portions. The surface roughness of the center portion is tapered across its width, and may be tapered across its width is in stepped zones. The center portion may have surface roughness varied across the surface to correspond to a desired variation in metal shell thickness across the cast strip. The center portion may be at least 60% of the casting roll width, and each edge portion may be up to 7% of the casting roll width.
摘要翻译： 用于连续铸造金属带的设备和方法包括一对铸造辊，其具有中心部分的铸造表面，平均表面粗糙度在3和7Ra之间的边缘部分以及每个边缘部分和中心部分之间的中间部分， 平均表面粗糙度在边缘部分表面粗糙度的1.2和4.0倍之间，中间部分在边缘和中心部分之间的平均表面粗糙度。 中心部分的表面粗糙度在其宽度上是锥形的，并且其宽度上的锥形可以是阶梯状的。 中心部分可以具有在表面上变化的表面粗糙度，以对应于跨过铸造带材的金属壳厚度的期望变化。 中心部分可以是铸辊宽度的至少60％，并且每个边缘部分可以高达铸辊宽度的7％。
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公开(公告)号：US07073565B2
公开(公告)日：2006-07-11
申请号：US10077391
申请日：2002-02-15
IPC分类号： B22D11/06
CPC分类号： B22D11/0651 , B22D11/00 , B22D11/0622
摘要： In twin roll casting of steel strip, molten steel is introduced into the nip 16B between parallel casting rolls to create casting pool supported on casting surfaces of the rolls and the rolls are rotated to deliver solidified strip downwardly from the nip. Casting surfaces are textured by a random pattern of discrete projections, which may have an average surface distribution of between 5 and 200 peaks per mm2 and an average height of at least 10 microns. In order to suppress chatter defects, the molten steel also has manganese content of at least 0.55% by weight and a silicon content in the range of 0.1 to 0.35% by weight. The strip is thus capable of moving away from the casting pool at a speed of more than 60 meters per minute without substantial high speed chattering defects.
摘要翻译： 在钢带的双辊铸造中，将钢水引入到平行铸辊之间的辊隙16B中，以形成支撑在辊的铸造表面上的铸池，并且辊旋转以将压实带从辊隙向下输送。 铸造表面通过离散突起的随机图案进行纹理化，其可以具有平均表面分布为每平方毫米2至500个峰值和至少10微米的平均高度。 为了抑制颤振缺陷，钢水的锰含量至少为0.55重量％，硅含量为0.1〜0.35重量％。 因此，条带能够以超过60米/分钟的速度远离铸池移动，而没有实质的高速振动缺陷。
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公开(公告)号：US06547849B2
公开(公告)日：2003-04-15
申请号：US10114627
申请日：2002-04-02
IPC分类号： C21C7064
CPC分类号： B22D11/116 , B22D11/117 , C21C5/34 , C21C7/0075 , C21C7/0087 , C21C7/06 , C21C7/0645
摘要： A steel charge and slag forming material is heated in a ladle to form molten steel covered by a slag containing silicon, manganese and calcium oxides. The steel is stirred by injection of an inert gas such as argon or nitrogen to cause silicon/manganese-deoxidation and desulphurization to produce a silicon/manganese killed molten steel. Stirring of the molten steel by the inert gas injection while in contact with slag high in calcium oxide generates low free oxygen levels in the steel and desulphurization to sulphur levels below 0.009%. The slag may subsequently be thickened by lime addition to prevent reversion of sulphur back into the steel and oxygen may be injected into the steel to increase its free oxygen content to produce a steel that is readily castable in a twin roll caster.
摘要翻译： 钢包装和成渣材料在钢包中加热以形成由含硅，锰和氧化钙的炉渣覆盖的钢水。 通过注入惰性气体例如氩气或氮气来搅拌钢，以引起硅/锰脱氧和脱硫以产生硅/锰杀死的钢水。 通过惰性气体注入在与氧化钙高的矿渣接触的情况下搅拌钢水，在钢中产生低的游离氧含量，脱硫至低于0.009％的硫含量。 炉渣随后可以通过石灰添加来增稠，以防止硫回到钢中，并且可以将氧气注入到钢中以增加其游离氧含量，以产生易于在双辊铸造机中浇铸的钢。
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公开(公告)号：US20090047536A1
公开(公告)日：2009-02-19
申请号：US11837851
申请日：2007-08-13
申请人： Hiroyuki Otsuka , Koshiro Yamane , Satoshi Terasaki , Mark Schlichting , Rama Ballav Mahapatra , David J. Sosinsky
发明人： Hiroyuki Otsuka , Koshiro Yamane , Satoshi Terasaki , Mark Schlichting , Rama Ballav Mahapatra , David J. Sosinsky
CPC分类号： B22D11/0622 , C22C38/00 , Y10T428/12
摘要： A thin cast steel strip and method of making thereof with improved resistance to microcracking, where the steel strip is produced by continuous casting and contains a carbon content between about 0.010% and about 0.065% by weight, less than 5.0% by weight chromium, at least 70 ppm of total oxygen and between 20 and 70 ppm of free oxygen, and manganese to sulfur ratio greater than about 250. The carbon content in the cast strip may be below about 0.035%, less than 0.005% by weight titanium, and the average manganese to silicon ratio in the strip produced may be greater than 3.5. The carbon content may be less than 0.035%, the casting speed less than 76.68 meters per minute, and the tundish temperature of the molten metal is maintained below 1612° C. (2933.7° F.).
摘要翻译： 一种薄铸钢带及其制造方法，具有改进的耐微裂纹性能，其中钢带通过连续铸造生产并且含有碳含量在约0.010％至约0.065重量％之间，小于5.0重量％的铬，在 至少70ppm的总氧气和20-70ppm的游离氧，以及锰与硫的比率大于约250.铸造带材中的碳含量可以低于约0.035％，小于0.005重量％的钛， 所生产的带材中的平均锰与硅的比率可以大于3.5。 碳含量可以小于0.035％，铸造速度小于76.68米/分钟，熔融金属的中间包温度保持在1612℃以下（2933.7°F）。
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公开(公告)号：US5701948A
公开(公告)日：1997-12-30
申请号：US633949
申请日：1996-04-17
IPC分类号： B22D11/00 , B22D11/04 , B22D11/059 , B22D11/06 , B27D11/06
CPC分类号： B22D11/0651
摘要： In continuous casting of steel strip, a casting pool of molten metal is supported on moving casting surfaces which are chilled to cause solidification of steel on the casting surfaces. The casting surfaces are textured by provision of parallel groove and ridge formations (11) defining V-shaped grooves (12) and ridges (13) with sharp edges (14). The depth (d) of the texture from ridge peak to groove root is in the range 5 to 50 microns and the pitch (p) between the grooves is in the range 100 to 250 microns. The casting surfaces may be peripheral surfaces of casting rolls of a twin roll caster.
摘要翻译： 在钢带的连续铸造中，熔融金属铸造池被支撑在移动的铸造表面上，该铸造表面被冷却以在铸造表面上引起钢的凝固。 通过设置限定具有尖锐边缘（14）的V形凹槽（12）和脊（13）的平行凹槽和脊形结构（11），铸造表面被纹理化。 从脊峰到凹槽根纹理的深度（d）在5至50微米的范围内，并且凹槽之间的间距（p）在100至250微米的范围内。 铸造表面可以是双辊铸造机的铸辊的周边表面。
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公开(公告)号：US07975754B2
公开(公告)日：2011-07-12
申请号：US11837851
申请日：2007-08-13
申请人： Hiroyuki Otsuka , Koshiro Yamane , Satoshi Terasaki , Mark Schlichting , Rama Ballav Mahapatra , David J. Sosinsky
发明人： Hiroyuki Otsuka , Koshiro Yamane , Satoshi Terasaki , Mark Schlichting , Rama Ballav Mahapatra , David J. Sosinsky
IPC分类号： B22D11/06
CPC分类号： B22D11/0622 , C22C38/00 , Y10T428/12
摘要： A thin cast steel strip and method of making thereof with improved resistance to microcracking, where the steel strip is produced by continuous casting and contains a carbon content between about 0.010% and about 0.065% by weight, less than 5.0% by weight chromium, at least 70 ppm of total oxygen and between 20 and 70 ppm of free oxygen, and manganese to sulfur ratio greater than about 250. The carbon content in the cast strip may be below about 0.035%, less than 0.005% by weight titanium, and the average manganese to silicon ratio in the strip produced may be greater than 3.5. The carbon content may be less than 0.035%, the casting speed less than 76.68 meters per minute, and the tundish temperature of the molten metal is maintained below 1612° C. (2933.7° F.).
摘要翻译： 一种薄铸钢带及其制造方法，具有改进的耐微裂纹性能，其中钢带通过连续铸造生产并且含有碳含量在约0.010％至约0.065重量％之间，小于5.0重量％的铬，在 至少70ppm的总氧气和20-70ppm的游离氧，以及锰与硫的比率大于约250.铸造带材中的碳含量可以低于约0.035％，小于0.005重量％的钛， 所生产的带材中的平均锰与硅的比率可以大于3.5。 碳含量可以小于0.035％，铸造速度小于76.68米/分钟，熔融金属的中间包温度保持在1612℃以下（2933.7°F）。
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公开(公告)号：US07484551B2
公开(公告)日：2009-02-03
申请号：US11548493
申请日：2006-10-11
CPC分类号： B22D11/001 , B22D11/0622
摘要： A method of controlling heat flux between the casting pool and the surfaces of the casting roll in a strip steel casting process includes controlling the concentration of nitrogen in the steel melt. The concentration of nitrogen may be controlled to achieve an operational heat transfer to the casting roll. The beat flux to the casting rolls may be controlled by maintaining the sum of partial pressures calculated from the nitrogen and hydrogen concentrations in the casting pool below 1.15 atmospheres. Decreasing the concentration of nitrogen can increase heat flux at the casting rolls.
摘要翻译： 在带钢铸造工艺中控制浇注池和铸辊表面之间的热通量的方法包括控制钢水中的氮浓度。 可以控制氮的浓度以实现对铸辊的可操作的热传递。 可以通过保持从铸池中的氮和氢浓度计算的分压总和低于1.15大气压来控制到铸辊的通量。 降低氮的浓度可以增加铸辊的热通量。
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公开(公告)号：US08960265B2
公开(公告)日：2015-02-24
申请号：US12916096
申请日：2010-10-29
CPC分类号： B22D11/0665 , B22C9/06 , B22D11/06 , B22D11/0622 , B22D11/0651
摘要： Apparatus and method for continuously casting metal strip includes a pair of casting rolls having casting surfaces with a center portion, edge portions each having average surface roughness between 3 and 7 Ra, and intermediate portion between each edge portion and the center portion, the center portion average surface roughness between 1.2 and 4.0 times the edge portion surface roughness, and the intermediate portions average surface roughness between that of the edge and center portions. The surface roughness of the center portion is tapered across its width, and may be tapered across its width is in stepped zones. The center portion may have surface roughness varied across the surface to correspond to a desired variation in metal shell thickness across the cast strip. The center portion may be at least 60% of the casting roll width, and each edge portion may be up to 7% of the casting roll width.
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