公开(公告)号：NO20041500A

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

IPC: B22D11/06 ,  B22D1/00 ,  B22D11/00 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06

CPC classification number: B22D11/0622 ,  C22C38/02 ,  C22C38/04

公开(公告)号：BR0114337A

公开(公告)日：2003-08-26

申请号：BR0114337

申请日：2001-09-28

Applicant: NUCOR CORP

Inventor： BLEJDE WALTER ,  MAHAPATRA RAMA ,  MUKUNTHAN KANNAPPAR ,  STREZOV LAZAR

IPC: B21B1/00 ,  B21B1/46 ,  B22D11/06 ,  B22D11/12 ,  B22D11/16

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.

公开(公告)号：CA2422144A1

公开(公告)日：2002-04-04

申请号：CA2422144

申请日：2001-09-28

Applicant: NUCOR CORP

Inventor： BLEJDE WALTER ,  STREZOV LAZAR ,  MAHAPATRA RAMA BALLAV ,  MUKUNTHAN KANNAPPAR

IPC: B21B1/46 ,  B21B37/76 ,  B22D11/00 ,  B22D11/06 ,  B22D11/124 ,  C21D1/18 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/60 ,  B22D11/112 ,  B22D11/22

Abstract: A plain carbon steel strip (12) is continuously cast in a twin roll caster (11) and passes to a run out table 17 on which it is subjected to accelerate d cooling by means of cooling headers (18) whereby it is cooled to transform t he strip from austenite to ferrite at a temperature range between 850 ~C and 40 0 ~C at a cooling rate of not less than 90 ~C/sec, such that the strip has a yield strength of greater than 450MPa. The strip after casting and before cooling is passed through a hot rolling mill to reduce the thickness of stri p by at least 15% and up to 50%.

公开(公告)号：CA2421668A1

公开(公告)日：2002-04-04

申请号：CA2421668

申请日：2001-09-28

Applicant: NUCOR CORP

Inventor： MUKUNTHAN KANNAPPAR ,  STREZOV LAZAR ,  MAHAPATRA RAMA ,  BLEJDE WALTER

IPC: B21B1/00 ,  B21B1/46 ,  B22D11/06 ,  B22D11/12 ,  B22D11/16

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. Th e 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 proce ss 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 produ ct and delivery thereof over that of conventional steel manufacturing processes .