Rolling apparatus for flat-rolled metal materials

Patent metadata

Field	Value
Publication number	US-9770746-B2
Application number	US-201314351074-A
Country	US
Kind code	B2
Filing date	Jun 25, 2013
Priority date	Jun 26, 2012
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

[Object]
To provide a rolling apparatus capable of accurately detecting a rolling direction force applied to a work roll chock.
[Solution]
A rolling apparatus for flat-rolled metal materials including a pair of upper and lower work rolls 1 and 2 includes a pair of work roll chocks 5 and 6 configured to hold the respective work rolls 1 and 2 , housings 10 configured to hold the work roll chocks, and rolling direction force measurement devices 21, 22, 23 , and 24 configured to measure rolling direction forces. The rolling direction force measurement devices include a plurality of load detection devices on an entry side or an exit side of the work roll chocks in a rolling direction, and the plurality of load detection devices are provided to one of the housings, and the plurality of load detection devices are disposed in a manner that, during rolling of the flat-rolled metal materials, at least two of the load detection devices are arranged adjacent to each other in a draft direction facing a side surface of a corresponding one of the work roll chocks. In this case, the at least two load detection devices are disposed in a manner that a line extending in the rolling direction and including a roll axis, which is a point of effort of a rolling direction force, is interposed between the at least two load detection devices in the draft direction.

First claim

The invention claimed is:

1. A rolling apparatus for a flat-rolled metal material, the rolling apparatus comprising:
a pair of work rolls including an upper work roll and a lower work roll;
a pair of backup rolls including an upper backup roll and a lower backup roll, the pair of backup rolls supporting the pair of work rolls;
a pair of work roll chocks configured to hold the respective work rolls;
a pair of backup roll chocks configured to hold the pair of backup rolls;
housings or project blocks configured to hold the work roll chocks; and
one or more rolling direction force measurement devices configured to measure rolling direction forces acting on a respective work roll chock,
wherein at least one of the rolling direction force measurement devices includes a plurality of load detection devices on an entry side or an exit side of one of the work roll chocks in a rolling direction, each of the plurality of load detection devices contacting a side surface of one of the pair of work roll chocks, and the plurality of load detection devices of the at least one of the rolling direction force measurement devices are provided to one of the housings or one of the project blocks, and
wherein the plurality of load detection devices are disposed in a manner that, on all occasions, a line extending in the rolling direction and including a roll axis which is a point of effort of the rolling direction force of one of the work rolls is interposed between at least two of the plurality of load detection devices in a draft direction, and the at least two of the plurality of load detection devices face a side surface of a corresponding one of the work roll chocks.

2. The rolling apparatus according to claim 1 ,
wherein, in at least one of the rolling direction force measurement devices, the load detection devices are disposed in a manner that, on all occasions, a line extending in the rolling direction and including a center of a radial bearing, which is the point of effort of the rolling direction force of one of the work rolls is interposed between at least two of the load detection devices in a roll axis direction of the work rolls, and the at least two of the load detection devices face the side surface of a corresponding one of the work roll chocks.

3. The rolling apparatus according to claim 1 ,
wherein at least one of the rolling direction force measurement devices includes at least three load detection devices on the entry side or the exit side of the work roll chocks in a rolling direction, and the at least three load detection devices are provided to one of the housings or one of the project blocks, and
wherein the load detection devices are disposed so as to be shifted in one of the draft direction and the roll axis direction of the work rolls, in a manner that the point of effort of the rolling direction force of each of the work rolls is located within an area defined by connecting the load detection devices.

4. The rolling apparatus according to claim 1 , further comprising:
a rolling direction force calculation device configured to calculate a rolling direction force by adding up loads of the one or more rolling direction force measurement devices each including the plurality of load detection devices, the loads being detected by the respective load detection devices.

5. The rolling apparatus according to claim 1 ,
wherein the rolling apparatus is provided with the rolling direction force measurement devices on an exit side of an upper work roll chock, an entry side of the upper work roll chock, an exit side of a lower work roll chock, and an entry side of the lower work roll chock, respectively.

6. The rolling apparatus according to claim 5 ,
wherein, out of the rolling direction force measurement devices, the plurality of load detection devices are provided only to the one or more rolling direction force measurement devices configured to measure any one of a rolling direction force acting in a rolling direction on the exit side and a rolling direction force acting in a rolling direction on the entry side.

7. The rolling apparatus according to claim 5 ,
wherein all of the rolling direction force measurement devices each have the plurality of load detection devices.

8. The rolling apparatus according to claim 5 ,
wherein, out of the rolling direction force measurement devices, the plurality of load detection devices are provided only to the one or more rolling direction force measurement devices for any one of the upper work roll chock and the lower work roll chock.

9. The rolling apparatus according to claim 7 ,
wherein the plurality of load detection devices are disposed in a manner that positions in a draft direction and positions in a roll axis direction of the plurality of load detection devices provided on the entry side in the rolling direction are identical to positions in a draft direction and positions in a roll axis direction of the plurality of load detection devices provided on the exit side in the rolling direction.

10. The rolling apparatus according to claim 7 ,
wherein the rolling direction force calculation device calculates a rolling direction force on the basis of an entry side load calculated by adding up loads detected by the plurality of load detection devices provided on the entry side in the rolling direction and an exit side load calculated by adding up loads detected by the plurality of load detection devices provided on the exit side in the rolling direction.

11. The rolling apparatus according to claim 1 ,
wherein the load detection devices are each a load cell.

12. The rolling apparatus according to claim 1 , further comprising:
a cover configured to cover each of the load detection devices, the cover being provided between one of the housings or one of the project blocks and each of the load detection devices.

13. The rolling apparatus according to claim 1 , further comprising:
a cover configured to collectively cover the load detection devices for each of the rolling direction force measurement devices, the cover being provided between one of the housings or one of the project blocks and each of the load detection devices.

14. The rolling apparatus according to claim 2 , further comprising:
a rolling direction force calculation device configured to calculate the rolling direction force by adding up loads of the one or more rolling direction force measurement devices each including the plurality of load detection devices, the loads being detected by the respective load detection devices.

15. The rolling apparatus according to claim 3 , further comprising:
a rolling direction force calculation device configured to calculate a rolling direction force by adding up loads of the one or more rolling direction force measurement devices each including the plurality of load detection devices, the loads being detected by the respective load detection devices.

Assignees

• Nippon Steel & Sumitomo Metal Corp

Inventors

• Ishii Atsushi
• Kasai Daisuke
• Ogawa Shigeru
• Kato Hiroki
• Okabe Yuuto

Classifications

• B21B38/08 Primary

  for measuring roll-force · CPC title

• B21B38/06 Primary

  for measuring tension or compression · CPC title

• B21B2273/04

  Lateral deviation, meandering, camber of product · CPC title

• B21B1/00

  Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section (B21B17/00 - B21B23/00 take precedence; with respect to composition of material to be rolled B21B3/00; extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B5/00; metal-rolling stands as units B21B13/00; continuous casting into moulds having walls formed by moving rolls B22D11/06); Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations · CPC title

• B21B2013/028

  Sixto, six-high stands · CPC title