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公开(公告)号：US07281569B2
公开(公告)日：2007-10-16
申请号：US10761947
申请日：2004-01-21
申请人： Walter N. Blejde , Rama Mahapatra , Lazar Strezov
发明人： Walter N. Blejde , Rama Mahapatra , Lazar Strezov
IPC分类号： B22D11/06
CPC分类号： B22D11/0674 , B22D11/0622 , B22D11/0651 , Y10T428/12
摘要： A method of producing cast steel strip having low surface roughness and low porosity by casting with molten steel having a total oxygen content of at least about 70 ppm and a free oxygen content between 20 and 60 ppm, and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The total oxygen content may be at least 100 ppm and the free oxygen content between 30 and 50 ppm. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.
摘要翻译： 一种通过铸造具有至少约70ppm的总氧含量和20至60ppm的游离氧含量的钢水铸造而生产具有低表面粗糙度和低孔隙率的铸钢带的方法，以及允许大多数任何 氧化物夹杂物处于液相线状态。 总氧含量可以至少为100ppm，游离氧含量为30-50ppm。 通过该方法生产的钢带可以具有每单位面积密度为每平方毫米至少约120个氧化物夹杂物，距带材表面约2微米的深度。
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公开(公告)号：US06585030B2
公开(公告)日：2003-07-01
申请号：US09967163
申请日：2001-09-28
IPC分类号： B22D1122
CPC分类号： C21D8/0215 , B22D11/0622 , B22D11/124 , C21D1/18 , C21D8/0226 , C21D9/573 , C22C38/02 , C22C38/04
摘要： Steel strips and methods for producing steel strips are provided. In an illustrated embodiment, a method includes continuously casting molten low carbon steel into a strip of no more than 5 mm thickness having austenite grains that are coarse grains of 100-300 micron width; and providing desired yield strength in the cast strip by cooling the strip to transform the austenite grains to ferrite in a temperature range between 850° C. and 400° C. at a selected cooling rate of at least 0.01° C./sec to produce a microstructure that provides a strip having a yield strength of at least 200 MPa. The low carbon steel produced desired microstructure.
摘要翻译： 提供钢带和生产钢带的方法。 在所示实施例中，一种方法包括将熔融的低碳钢连续铸造成不超过5mm厚度的带有100-300微米宽的粗晶粒的奥氏体晶粒的条带; 并通过冷却带材在铸钢带中提供期望的屈服强度，以在至少0.01℃/秒的选定冷却速率下在850℃和400℃之间的温度范围内将奥氏体晶粒转化为铁素体，以产生 提供具有至少200MPa的屈服强度的条带的微结构。 低碳钢生产出所需的微观结构。
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公开(公告)号：US07299856B2
公开(公告)日：2007-11-27
申请号：US11000593
申请日：2004-12-01
申请人： Walter Blejde , Rama Mahapatra , Lazar Strezov
发明人： Walter Blejde , Rama Mahapatra , Lazar Strezov
IPC分类号： B22D11/10
CPC分类号： B22D11/0674 , B22D11/0622 , B22D11/0651 , Y10T428/12
摘要： A thin steel strip with low surface roughness and low porosity produced by casting with molten steel having a total oxygen content of at least about 100 ppm and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.
摘要翻译： 通过铸造具有至少约100ppm的总氧含量的钢水和允许大部分任何氧化物夹杂物处于液相状态的温度产生的具有低表面粗糙度和低孔隙率的薄钢带。 通过该方法生产的钢带可以具有每单位面积密度为每平方毫米至少约120个氧化物夹杂物，距带材表面约2微米的深度。
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公开(公告)号：US06581672B2
公开(公告)日：2003-06-24
申请号：US09968424
申请日：2001-10-01
IPC分类号： B22D1116
CPC分类号： C21D8/0226 , B21B1/26 , B21B1/463 , B21B37/76 , B21B45/0233 , B21B2201/02 , B21B2201/04 , B22D11/0622 , B22D11/124 , B22D11/16 , B22D11/225 , C21D1/18 , C21D8/0215 , C21D8/0263 , C21D9/573 , C21D2211/005
摘要： A method of controlling a continuous steel strip casting process based on customer-specified requirements includes a general purpose computer in which product specifications of steel product ordered by a customer is entered. The computer is configured to automatically map the product specifications to process parameters/set points for controlling the continuous steel strip casting process in a manner to produce the customer ordered product, and in one embodiment produces a process change report detailing such process parameters/set points for operator use in physically implementing such process parameters/set points in the strip casting process. Alternatively, the computer may provide the process parameters/set points directly to the strip casting process for automatic control thereof in producing the customer ordered steel product. The process of the present invention is capable of substantially reducing the time between a customer request for a steel product and delivery thereof over that of conventional steel manufacturing processes.
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5.发明授权公开(公告)号：US06896034B2
公开(公告)日：2005-05-24
申请号：US10420378
申请日：2003-04-22
IPC分类号： B21B1/26 , B21B1/46 , B21B37/76 , B21B45/02 , B22D11/06 , B22D11/124 , B22D11/16 , B22D11/22 , C21D1/18 , C21D8/02 , C21D9/573
CPC分类号： C21D8/0226 , B21B1/26 , B21B1/463 , B21B37/76 , B21B45/0233 , B21B2201/02 , B21B2201/04 , B22D11/0622 , B22D11/124 , B22D11/16 , B22D11/225 , C21D1/18 , C21D8/0215 , C21D8/0263 , C21D9/573 , C21D2211/005
摘要： A method of controlling a continuous steel strip casting process based on customer-specified requirements includes a general purpose computer in which product specifications of steel product ordered by a customer is entered. The computer is configured to automatically map the product specifications to process parameters/set points for controlling the continuous steel strip casting process in a manner to produce the customer ordered product, and in one embodiment produces a process change report detailing such process parameters/set points for operator use in physically implementing such process parameters/set points in the strip casting process. Alternatively, the computer may provide the process parameters/set points directly to the strip casting process for automatic control thereof in producing the customer ordered steel product. The process of the present invention is capable of substantially reducing the time between a customer request for a steel product and delivery thereof over that of conventional steel manufacturing processes.
摘要翻译： 根据客户指定的要求控制连续钢带铸造过程的方法包括进入客户订购的钢产品的产品规格的通用计算机。 计算机被配置为以产生客户订购产品的方式自动地将产品规格映射到用于控制连续钢带铸造过程的工艺参数/设定点，并且在一个实施例中产生详细描述这些工艺参数/设定点的过程变化报告 用于操作者在物料实施条带铸造过程中的这些工艺参数/设定点。 或者，计算机可以将工艺参数/设定点直接提供给带材铸造过程，以便在生产客户订购的钢产品时进行自动控制。 本发明的方法能够大大减少客户对钢铁产品的要求与其传送之间的时间超过常规钢铁制造工艺的时间。
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公开(公告)号：US06818073B2
公开(公告)日：2004-11-16
申请号：US10422217
申请日：2003-04-24
IPC分类号： C22C3800
CPC分类号： C21D8/0215 , B22D11/0622 , B22D11/124 , C21D1/18 , C21D8/0226 , C21D9/573 , C22C38/02 , C22C38/04
摘要： Steel strips and methods for producing steel strips are provided. In an illustrated embodiment, a method includes continuously casting molten low carbon steel into a strip of no more than 5 mm thickness having austenite grains that are coarse grains of 100-300 micron width; and providing desired yield strength in the cast strip by cooling the strip to transform the austenite grains to ferrite in a temperature range between 850° C. and 400° C. at a selected cooling rate of at least 0.01° C./sec to produce a microstructure that provides a strip having a yield strength of at least 200 MPa. The low carbon steel produced desired microstructure.
摘要翻译： 提供钢带和生产钢带的方法。 在所示实施例中，一种方法包括将熔融的低碳钢连续铸造成不超过5mm厚度的带有100-300微米宽的粗晶粒的奥氏体晶粒的条带; 并通过冷却带材在铸钢带中提供期望的屈服强度，以在至少0.01℃/秒的选定冷却速率下在850℃和400℃之间的温度范围内将奥氏体晶粒转化为铁素体，以产生 提供具有至少200MPa的屈服强度的条带的微结构。 低碳钢生产出所需的微观结构。
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公开(公告)号：US06675869B2
公开(公告)日：2004-01-13
申请号：US09967166
申请日：2001-09-28
IPC分类号： B22D11124
CPC分类号： B21B1/463 , B21B37/76 , B21B2201/02 , B22D11/0622 , B22D11/124 , C21D1/18 , C21D8/0215 , C21D8/0226 , C21D8/0263
摘要： A plain carbon steel strip is continuously cast in a twin roll caster and passes to a run out table on which it is subjected to accelerated cooling by means of cooling headers whereby it is cooled to transform the strip from austenite to ferrite at a temperature range between 850° C. and 400° C. at a cooling rate of not less than 90° C./sec, such that the strip has a yield strength of greater than 450 MPa. The strip after casting and before cooling is passed through a hot rolling mill to reduce the thickness of strip by at least 15% and up to 50%.
摘要翻译： 普通碳钢带连续铸造在双辊铸造机中，并通过冷却集管从而将钢带从奥氏体转变成铁素体，并在两个轧辊之间的温度范围内， 850℃和400℃，冷却速度不低于90℃/秒，使得带材的屈服强度大于450MPa。 铸造后的钢带和冷却前通过热轧机将钢带的厚度减少至少15％和高达50％。
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公开(公告)号：US20080032150A1
公开(公告)日：2008-02-07
申请号：US11867977
申请日：2007-10-05
申请人： Walter Blejde , Rama Mahapatra , Lazar Strezov
发明人： Walter Blejde , Rama Mahapatra , Lazar Strezov
CPC分类号： B22D11/0674 , B22D11/0622 , B22D11/0651 , Y10T428/12
摘要： A method of producing cast steel strip having low surface roughness and low porosity by casting with molten steel having a total oxygen content of at least about 70 ppm and a free oxygen content between 20 and 60 ppm, and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The total oxygen content may be at least 100 ppm and the free oxygen content between 30 and 50 ppm. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.
摘要翻译： 一种通过铸造具有至少约70ppm的总氧含量和20至60ppm的游离氧含量的钢水铸造而生产具有低表面粗糙度和低孔隙率的铸钢带的方法，以及允许大多数任何 氧化物夹杂物处于液相线状态。 总氧含量可以至少为100ppm，游离氧含量为30-50ppm。 通过该方法生产的钢带可以具有每单位面积密度为每平方毫米至少约120个氧化物夹杂物，距带材表面约2微米的深度。
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公开(公告)号：US20060243417A1
公开(公告)日：2006-11-02
申请号：US11456633
申请日：2006-07-11
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：US07367378B2
公开(公告)日：2008-05-06
申请号：US11277675
申请日：2006-03-28
申请人： Walter Blejde , Rama Mahapatra , Lazar Strezov
发明人： Walter Blejde , Rama Mahapatra , Lazar Strezov
IPC分类号： B22D11/06
CPC分类号： B22D11/0674 , B22D11/0622 , B22D11/0651 , Y10T428/12
摘要： A method of producing cast steel strip having low surface roughness and low porosity by casting with molten steel having a total oxygen content of at least about 100 ppm and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.
摘要翻译： 一种通过铸造具有至少约100ppm的总氧含量的钢水和允许大部分任何氧化物夹杂物处于液相状态的温度来生产具有低表面粗糙度和低孔隙率的铸钢带的方法。 通过该方法生产的钢带可以具有每单位面积密度为每平方毫米至少约120个氧化物夹杂物，距带材表面约2微米的深度。
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