公开(公告)号：US20230149996A1

公开(公告)日：2023-05-18

申请号：US17995808

申请日：2021-03-08

Applicant: ABB Schweiz AG

Inventor： Markus Lindgren ,  Christer Sjögren ,  Carl-Fredrik Lindberg

IPC: B21B37/74 ,  G01B21/20 ,  B21B38/02

CPC classification number: B21B37/74 ,  B21B38/02 ,  G01B21/20

Abstract: A method for detecting a faulty cooling unit in a set of cooling units configured to provide a coolant to work rolls arranged to process a work item therebetween, the method including: varying the flow rates of the coolant ejected from a sub-set of the cooling units; in response to varying the flow rates, determining a flatness variation value of the work item for at least each of the cooling units in the sub-set of cooling units, the flatness variation value being indicative of the work item flatness variation downstream of the work rolls; and detecting a faulty cooling unit based on comparing the flatness variation values to a reference flatness variation value.

公开(公告)号：US11712724B2

公开(公告)日：2023-08-01

申请号：US17995808

申请日：2021-03-08

Applicant: ABB Schweiz AG

Inventor： Markus Lindgren ,  Christer Sjögren ,  Carl-Fredrik Lindberg

IPC: B21B37/74 ,  B21B38/02 ,  G01B21/20

CPC classification number: B21B37/74 ,  B21B38/02 ,  G01B21/20

Abstract: A method for detecting a faulty cooling unit in a set of cooling units configured to provide a coolant to work rolls arranged to process a work item therebetween, the method including: varying the flow rates of the coolant ejected from a sub-set of the cooling units; in response to varying the flow rates, determining a flatness variation value of the work item for at least each of the cooling units in the sub-set of cooling units, the flatness variation value being indicative of the work item flatness variation downstream of the work rolls; and detecting a faulty cooling unit based on comparing the flatness variation values to a reference flatness variation value.

公开(公告)号：US20230118015A1

公开(公告)日：2023-04-20

申请号：US17907468

申请日：2020-11-16

Applicant: ABB Schweiz AG

Inventor： Markus Lindgren ,  Christer Sjögren

IPC: B21B37/38 ,  B21B38/02

Abstract: A method of controlling flatness of a strip of rolled material in a production line including a hot rolling mill and at least one cold rolling mill, downstream of the hot rolling mill, the method including determining flatness data of the strip in one or more of the at least one cold rolling mill and/or following passing of the strip through one or more of the at least one cold rolling mill; determining a thickness profile target of the strip for the hot rolling mill based on the flatness data; and passing the strip through the hot rolling mill and adjusting the thickness of the strip based on the thickness profile target. A control system and a production line are also provided.