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1. 发明专利

JPH10192935A CONTROLLER FOR TANDEM ROLLING MILL 失效
公开(公告)号：JPH10192935A
公开(公告)日：1998-07-28
申请号：JP660397
申请日：1997-01-17
申请人： TOYO KOHAN CO LTD , TOSHIBA CORP
发明人： NISHIMURA KUNIO , NOMURA MASAKATSU , MIYAKE KATSUYA , SEKIGUCHI KUNIO , FURUTA TADASHIGE , SAKATA MASAHIKO
IPC分类号： B21B37/00 , B21B37/26
摘要： PROBLEM TO BE SOLVED: To conduct stabilized flying thickness change by changing a roll speed of each upstream stand including a (n-1) stand at a timing a thickness change point reaches a (n)th stand and changing a succeeding material to a target thickness with a reduced number of stands. SOLUTION: A speed change quantity arithmetic part 31 uses an outlet thickness change quantity of a fifth stand computed with a thickness change quantity arithmetic part 30 and computes a roll speed change quantity and then each roll speed change quantity from a third stand up to a first stand. At a timing a thickness change point reaches the fifth stand, each speed change quantity from a fourth stand up to the first stand is added to each speed controller 15-12. A roll speed change quantity is added to a roll speed reference of each stand to change each roll speed from the first stand to the fourth stand in synchronizing. By this method, a roll speed ratio only between the fourth stand and the fifth stand is changed, an outlet thickness of the fifth stand is changed to a prescribed value.

2. 发明专利

JPH10192936A CONTROLLER FOR TANDEM ROLLING MILL 失效
公开(公告)号：JPH10192936A
公开(公告)日：1998-07-28
申请号：JP661697
申请日：1997-01-17
申请人： TOYO KOHAN CO LTD , TOSHIBA CORP
发明人： IHARA NOBUYUKI , NOMURA MASAKATSU , AKITOMO TSUTOMU , SEKIGUCHI KUNIO , SEKI YOSHIRO
IPC分类号： B21B37/00 , B21B37/26
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of the deterioration of tension stress or excessive tension in a flying plate thickness changing process, and to realize stable and efficient continuous rolling in the arbitrary combination of preceding material and succeeding material. SOLUTION: When setting each pass schedule of the preceding material and the succeeding material by a pass schedule setting means 30, an intermediate pass schedule is determined by a pass schedule calculating means 31. The roll opening degree setting value, roll speed setting value and tension setting value between stands of each stand of the tandem rolling mill in each process of a first flying plate thickness changing from the pass schedule of the preceding material to an intermediate pass schedule and a second flying plate thickness changing from the intermediate pass schedule to the pass schedule of the succeeding material, are determined previously by a setting value calculating means 32. On the other hand, first plate thickness changing point position and second plate thickness changing point position, are determined by a plate thickness changing point position determining means 33, and the positions of two plate thickness changing points, are detected by a setting value output means 34. At timing when the plate thickness changing point has reached each stand, the roll opening degree setting value, roll speed setting value and tension setting value between stands of a corresponding rolling mill, are changed by using the output of the setting value calculating means.

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