System and method for controlling threading in a rolling mill

Abstract

A method of rolling a metal substrate 104 with a rolling mill 100 includes receiving a historical parameter from a previous rolling operation and receiving substrate information about the metal substrate 104 to be rolled before rolling the metal substrate 104. The method also includes, before rolling the metal substrate 104, predicting a start parameter for the rolling mill 100 based on the historical parameter and the substrate information. The method may include rolling the metal substrate 104 with the rolling mill 100 by controlling the rolling mill based on the predicted start parameter at least during a start of the rolling of the metal substrate 104. A rolling mill 100 for a metal substrate 104 may include at least one work stand 102A, 102B and a controller 116 for predicting a start parameter for the rolling mill 100 based on the historical parameter and the substrate information before rolling of the metal substrate 104.

That which is claimed: 
     
         1 . A method of rolling a metal substrate with a rolling mill, the method comprising:
 before rolling the metal substrate:
 receiving a historical parameter from a previous rolling operation; 
 receiving substrate information about the metal substrate to be rolled; and 
 predicting a start parameter for the rolling mill based on the historical parameter and the substrate information; and 
   starting a rolling operation, wherein starting the rolling operation comprises initially receiving the metal substrate at the rolling mill and controlling the rolling mill to have the predicted start parameter at least while initially receiving the metal substrate at the rolling mill.   
     
     
         2 . The method of  claim 1 , wherein predicting the start parameter comprises predicting a first start parameter and a second start parameter for a work stand of the rolling mill. 
     
     
         3 . The method of  claim 2 , wherein the first start parameter comprises a bending setpoint for a work roll of the rolling mill, and wherein the second start parameter comprises a tilting setpoint for the work roll of the rolling mill. 
     
     
         4 . The method of  claim 1 , wherein predicting the start parameter comprises predicting a first start parameter for a first work stand of the rolling mill and predicting a second start parameter for a second work stand of the rolling mill. 
     
     
         5 . The method of  claim 4 , wherein the first start parameter is a bending setpoint for a work roll of the first work stand or a tilting setpoint for the work roll of the first work stand, and wherein the second start parameter is a bending setpoint for a work roll of the second work stand or a tilting setpoint for the work roll of the second work stand. 
     
     
         6 . The method of  claim 4 , wherein the first start parameter and the second start parameter are a same type of setpoint. 
     
     
         7 . The method of  claim 1 , wherein starting the rolling operation comprises starting a cold rolling operation. 
     
     
         8 . The method of  claim 1 , further comprising, before rolling the metal substrate, determining a probability of a bad start based on the predicted start parameter, the historical parameter, and the substrate information, and wherein starting the rolling operation comprises starting the rolling operation based on the determined probability being less than a predetermined threshold. 
     
     
         9 . A method of rolling a metal substrate with a rolling mill, the method comprising:
 before rolling the metal substrate:
 receiving a historical parameter from a previous rolling operation; 
 receiving substrate information about the metal substrate to be rolled; and 
 predicting a start parameter for the rolling mill based on the historical parameter and the substrate information; and 
   rolling the metal substrate with the rolling mill by controlling the rolling mill based on the predicted start parameter at least during a start of the rolling of the metal substrate.   
     
     
         10 . The method of  claim 9 , wherein predicting the start parameter comprises predicting a first start parameter and a second start parameter for a work stand of the rolling mill. 
     
     
         11 . The method of  claim 10 , wherein the first start parameter comprises a bending setpoint for a work roll of the rolling mill, and wherein the second start parameter comprises a tilting setpoint for the work roll of the rolling mill. 
     
     
         12 . The method of  claim 9 , wherein predicting the start parameter comprises predicting a first start parameter for a first work stand of the rolling mill and predicting a second start parameter for a second work stand of the rolling mill. 
     
     
         13 . The method of  claim 12 , wherein the first start parameter is a bending setpoint for a work roll of the first work stand or a tilting setpoint for the work roll of the first work stand, and wherein the second start parameter is a bending setpoint for a work roll of the second work stand or a tilting setpoint for the work roll of the second work stand. 
     
     
         14 . The method of  claim 9 , further comprising determining, before rolling the metal substrate, a probability of a bad start based on the predicted start parameter, the historical parameter, and the substrate information, and wherein rolling the metal substrate comprises rolling the metal substrate based on the determined probability being less than a predetermined threshold. 
     
     
         15 . A rolling mill for a metal substrate, the rolling mill comprising:
 at least one work stand comprising a work roll; and   a controller communicatively coupled to the at least one work stand, the controller configured to:
 receive, before rolling of the metal substrate with the at least one work stand, a historical parameter from a previous rolling operation; 
 receive, before rolling of the metal substrate with the at least one work stand, substrate information about the metal substrate to be rolled; 
 predict, before rolling of the metal substrate with the at least one work stand, a start parameter for the rolling mill based on the historical parameter and the substrate information; and 
 control the at least one work stand during a start of rolling of the metal substrate with the rolling mill based on the predicted start parameter. 
   
     
     
         16 . The rolling mill of  claim 15 , wherein the controller is further configured to determine a probability of a bad start before the rolling of the metal substrate based on the predicted start parameter, the historical parameter, and the substrate information, and control the rolling mill based on the determined probability being less than a predetermined threshold. 
     
     
         17 . The rolling mill of  claim 15 , wherein the start parameter comprises a first start parameter and a second start parameter for the work stand of the rolling mill. 
     
     
         18 . The rolling mill of  claim 17 , wherein the first start parameter comprises a bending setpoint for the work roll, and wherein the second start parameter comprises a tilting setpoint for the work roll. 
     
     
         19 . The rolling mill of  claim 15 , wherein the work stand is a first work stand and the work roll is a first work roll, wherein the rolling mill comprises a second work stand comprising a second work roll, and wherein the start parameter comprises a first start parameter for the first work stand and a second start parameter for the second work stand. 
     
     
         20 . The rolling mill of  claim 15 , wherein the rolling mill is a cold rolling mill.