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公开(公告)号：DE60139945D1
公开(公告)日：2009-10-29
申请号：DE60139945
申请日：2001-09-28
Applicant: NUCOR CORP
Inventor： MUKUNTHAN KANNAPPAR , STREZOV LAZAR , MAHAPATRA RAMA , BLEJDE WALTER
IPC: B21B1/00 , B22D11/06 , B21B1/46 , B22D11/00 , B22D11/12 , B22D11/124 , C21D1/00 , C21D1/18 , C21D8/02 , C21D9/573 , C22C38/00 , C22C38/06
Abstract: 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.
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公开(公告)号：AT442925T
公开(公告)日：2009-10-15
申请号：AT01971500
申请日：2001-09-28
Applicant: NUCOR CORP
Inventor： MUKUNTHAN KANNAPPAR , STREZOV LAZAR , MAHAPATRA RAMA , BLEJDE WALTER
IPC: B21B1/00 , B22D11/06 , B21B1/46 , B22D11/00 , B22D11/12 , B22D11/124 , C21D1/00 , C21D1/18 , C21D8/02 , C21D9/573 , C22C38/00 , C22C38/06
Abstract: 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.
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公开(公告)号：DE60125562T2
公开(公告)日：2007-10-11
申请号：DE60125562
申请日：2001-09-28
Applicant: NUCOR CORP
Inventor： BLEJDE WALTER , MAHAPATRA RAMA , STREZOV LAZAR , MUKUNTHAN KANNAPPAR
Abstract: 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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公开(公告)号：DE60125562D1
公开(公告)日：2007-02-08
申请号：DE60125562
申请日：2001-09-28
Applicant: NUCOR CORP
Inventor： BLEJDE WALTER , MAHAPATRA RAMA , STREZOV LAZAR , MUKUNTHAN KANNAPPAR
Abstract: 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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公开(公告)号：AR045440A1
公开(公告)日：2005-10-26
申请号：ARP040102557
申请日：2004-07-20
Applicant: NUCOR CORP
Inventor： BLEJDE WALTER , MAHAPATRA RAMA BALLAV
Abstract: Método para modelar un fleje de acero de bajo contenido de carbono que tiene inclusiones. Se forma un acero fundido que tiene una escoria de óxido de hierro, manganeso, silicio y aluminio y se lo hace pasar entre un par de cilindros de moldeo (16) para formar el fleje de acero (20) que tiene inclusiones de MnO.SiO2.Al2O3, teniendo las inclusiiones una relación deseada de MnO/SiO2. Adicionalmetne se divulga el felje de acero de bajo contenido de carbono moldeado con dicho método.
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Patent Agency Ranking
公开(公告)号：MXPA03002134A
公开(公告)日：2005-06-30
申请号：MXPA03002134
申请日：2001-09-28
Applicant: NUCOR CORP
Inventor： BLEJDE WALTER
Abstract: Un metodo para controlar un proceso de vaciado continuo de bandas o tiras de acero en base a los requerimientos especificados por el cliente, incluye una computadora de proposito general en la cual se ingresan las especificaciones del producto del producto de acero ordenado por el cliente. La computadora se configura para formar mapas o correlacionar automaticamente las especificaciones del producto, para procesar los parametros/puntos de ajuste para controlar el proceso de vaciado continuo de bandas o tiras de acero en una manera para producir el producto ordenado por el cliente, y en una modalidad, produce un reporte de cambio del proceso que detalla tales parametros/puntos de ajuste para que el operador lo use para implementar fisicamente tales parametros/puntos de ajuste en el proceso de vaciado continuo de bandas o tiras. Alternativamente, la computadora puede proporcionar los parametros/puntos de ajuste directamente al proceso de vaciado continuo de bandas o tiras, para el control automatico del mismo, para producir el producto de acero especificado por el cliente. El proceso de la presente invencion es capaz de reducir substancialmente el tiempo entre una peticion del cliente para un producto de acero y la entrega del mismo, sobre aquel de los procesos de manufactura de acero convencionales.
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公开(公告)号：MXPA03001971A
公开(公告)日：2004-09-10
申请号：MXPA03001971
申请日：2001-09-28
Applicant: NUCOR CORP
Inventor： BLEJDE WALTER
IPC: B21B1/46 , B22D11/00 , B22D11/06 , B21B1/00 , B22D11/12 , B22D11/124 , C21D1/00 , C21D1/18 , C21D8/02 , C21D9/573 , C22C38/00 , C22C38/06
Abstract: Se proporcionan bandas de acero y metodos para producir bandas de acero. En una modalidad ilustrada, un metodo incluye moldear continuamente acero al bajo carbono fundido hacia una banda de no mas de 5 mm de espesor que tiene granos de austenita que son granos gruesos de 100-300 micrones de anchura; y proporcionar la resistencia elastica deseada en la banda moldeada enfriando la banda para transformar los granos de austenita en ferrita en una escala de temperatura entre 850 degree C y 400 degree C a un regimen de enfriamiento seleccionado de cuando menos 0.0 degree C/seg y producir una microestructura que proporciona una banda que tiene una resistencia elastica de cuando menos 200 MPa. El acero al bajo carbono produjo la microestructura deseada.
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公开(公告)号：HRP20040234A2
公开(公告)日：2004-08-31
申请号：HRP20040234
申请日：2004-03-10
Applicant: NUCOR CORP
Inventor： BLEJDE WALTER , RAMA , STREZOV LAZAR
Abstract: A method of producing strip comprising the steps of assembling a pair of casting rolls with a nip between them, introducing between the casting rolls to form a casting pool of molten carbon steel having a total oxygen content of at least 100 ppm and usually less than 250 ppm, counter rotating the casting rolls, solidifying the molten steel on the rolls to form metal shells with levels of oxide inclusions reflected by the total oxygen content of the molten steel, and forming thin steel strip through the nip between the casting rolls from the solidified shells. A unique steel strip may be obtained using the method having ductile properties.
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公开(公告)号：NO20041500L
公开(公告)日：2004-06-10
申请号：NO20041500
申请日：2004-04-13
Applicant: NUCOR CORP
Inventor： MAHAPATRA RAMA BALLAV , BLEJDE WALTER , STREZOV LAZAR
Abstract: A method of producing strip comprising the steps of assembling a pair of casting rolls with a nip between them, introducing between the casting rolls to form a casting pool of molten carbon steel having a total oxygen content of at least 100 ppm and usually less than 250 ppm, counter rotating the casting rolls, solidifying the molten steel on the rolls to form metal shells with levels of oxide inclusions reflected by the total oxygen content of the molten steel, and forming thin steel strip through the nip between the casting rolls from the solidified shells. A unique steel strip may be obtained using the method having ductile properties.
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公开(公告)号：NO20034355A
公开(公告)日：2003-09-29
申请号：NO20034355
申请日：2003-09-29
Applicant: NUCOR CORP
Inventor： GROSS CLAY A , MAHAPATRA RAMA BALLAV , BLEJDE WALTER , WIGMAN STEVEN LEONARD
IPC: B22D1/00 , B22D11/116 , B22D11/117 , C21C5/34 , C21C7/00 , C21C7/06 , C21C7/064 , C21C7/072 , C21C7/076
CPC classification number: B22D11/116 , B22D11/117 , C21C5/34 , C21C7/0075 , C21C7/0087 , C21C7/06 , C21C7/0645
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