Device and method for cooling a roll

Patent metadata

Field	Value
Publication number	US-10967409-B2
Application number	US-201515531014-A
Country	US
Kind code	B2
Filing date	Nov 26, 2015
Priority date	Nov 27, 2014
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

The invention relates to a device and a method for cooling a roll. The roll concerned can be a roller in a roll stand or a measuring roll. The device comprises a cooling shell having a cross section in the shape of a section of a circular arc, for covering a surface region of the roll ( 200 ), wherein, in the region of an edge of the cooling shell, a bearing is formed with a pivot joint ( 120 ) with an axis of rotation running perpendicular to the circular arc-shaped cross-section, for pivoting the cooling shell about the axis of rotation. According to the invention, in order to ensure that the size of the cooling gap during the rolling operation or during the operation of a measuring roll is always autonomously optimally set, the bearing has a degree of freedom in radial direction r with respect to the circular arc-shaped cross-section of the cooling shell, such that the cooling shell is mounted in the bearing in such a way as to be freely movable in the radial direction.

First claim

The invention claimed is:

1. A device for cooling a roll comprising a cooling shell formed as a circular section for covering a surface region of the roll, and a bearing located in an edge region of the circular section and formed as a pivot joint provided with a rotational axis extending perpendicular to the cooling shell for pivoting the cooling shell about the rotational axis; and
wherein the bearing has a degree of freedom in a radial direction (r) with respect to the cooling shell, and the cooling shell is supported on the bearing to provide uniform displacement of the cooling shell relative to the roll in the radial direction.

2. The device according to claim 1 , wherein a ballast weight is mounted on a convexly curved circumference outside of the cooling shell at a distance from an outer surface of the cooling shell, and in that a lever arm is provided for mounting the ballast weight outside of the cooling shell.

3. The device according to claim 2 , wherein the lever arm and the ballast weight are designed and arranged so that a desired torque about the axis of rotation of the bearing is adjusted in concert with weight distribution of the cooling shell for a predetermined deflection of a combination of the cooling shell and the ballast weight from a pendulum position of rest.

4. The device according to claim 1 , wherein the cooling shell is hung freely swinging from the bearing.

5. The device according to claim 1 , further comprising a nozzle mechanism for spraying a cooling medium with a predetermined pressure or volume flow tangentially to a concavely curved inside surface of the cooling shell.

6. The device according to claim 1 , further comprising a positioning mechanism, which engages with the bearing for positioning the bearing together with the radially movable cooling shell supported thereon in a predetermined angular position (α).

7. The device according to claim 1 , wherein the bearing is a spherical bearing.

8. A rolling stand comprising: a roll; and a device for cooling the roll, wherein the device for cooling the roll includes a cooling shell formed as a circular section for covering a surface region of the roll, and a bearing located in an edge region of the circular section and formed as a pivot joint provided with a rotational axis extending perpendicular to the cooling shell for pivoting the cooling shell about the rotational axis,
wherein the bearing has a degree of freedom in a radial direction (r) with respect to the cooling shell, and the cooling shell is positioned on an outer circumference of the roll and is supported on the bearing to provide uniform displacement of the cooling shell relative to the roll in the radial direction (r).

9. The rolling stand according to claim 8 , wherein the device is supported by the bearing for free swinging displacement over the outer circumference of the roll.

10. The rolling stand according to claim 8 , further comprising a positioning mechanism for mounting the device at an angle (a) with respect to the rotational axis in a circumferential direction (U).

11. The rolling stand according to claim 8 , wherein the bearing, together with the device for cooling freely suspended therefrom, is mounted on the rolling stand.

12. The rolling stand according to claim 8 , wherein the bearing, together with the cooling device freely suspended therefrom, is formed of two halves mounted on roll chocks.

13. A measurement device, comprising a measuring roller in form of a roll on a surface of which a plurality of sensors for detecting pressure or flatness distribution in a width direction of a rolled product which is partially wrapped around the roll; and a device for cooling the roll, wherein the device for cooling the roll includes a cooling shell formed as a circular section for covering a surface region of the roll, and a bearing located in an edge region of the circular section and formed as a pivot joint provided with a rotational axis extending perpendicular to the cooling shell for pivoting the cooling shell about the rotational axis,
wherein the bearing has a degree of freedom in a radial direction (r) with respect to the cooling shell, and the cooling shell is positioned on an outer circumference of the roll and is supported on the bearing to provide uniform displacement of the cooling shell relative to the roll in the radial direction.

14. The measurement device according to claim 13 , wherein the device is supported by the bearing for free swinging displacement over the outer circumference of the roll.

15. The measurement device according to claim 13 , further comprising a positioning mechanism for mounting the device at an angle (α) with respect to the rotational axis in a circumferential direction (U).

16. The measurement device according to claim 13 , wherein the bearing, together with the cooling device freely suspended therefrom, is formed of two halves mounted on roll chocks.

17. A method of operating a rolling stand, the rolling stand includes a roll for rolling a rolled product and a cooling device for cooling the roll, wherein the cooling device includes a cooling shell which is formed as a circular section for covering a surface region of the roll, the cooling device further including a bearing located in an edge region of the circular section and formed as a pivot joint provided with a rotational axis extending perpendicular to the cooling shell for pivoting the cooling shell about the rotational axis,
wherein the bearing has a degree of freedom in a radial direction (r) with respect to the cooling shell, and the cooling shell is positioned on an outer circumference of the roll and is supported on the bearing to provide uniform displacement of the cooling shell relative to the roll in the radial direction (r),
the method comprising the steps of:
positioning the cooling device at an angle (a) about a portion of the outer circumference of the roll at a predetermined radial spacing from the roll;
spraying a cooling medium from the cooling device with a predetermined pressure and/or volume flow into a cooling gap formed between an outer surface of the roll and a concavely curved internal surface of the cooling shell;
rolling the rolled product during the spraying of the cooling medium; and
releasing the cooling device in the radial direction (r) so that the cooling gap is suitably adjusted in a region of the pivot joint based on a free mobility of the cooling shell in the radial direction which is in response to a magnitude of the pressure and/or the volume flow of the cooling medium sprayed into the cooling gap.

18. Method according to claim 17 , wherein the cooling gap is adjusted along an entire length of the cooling shell upon detection of an equilibrium of forces between a radially inwardly acting distribution of a pendulum force of the cooling shell, a radially inwardly acting distribution of a suction force of a flow of the cooling medium in the cooling gap, and distribution of a force of reaction of the cooling medium.

19. A method of operating a measurement device, the measurement device comprising a measuring roll with a surface having a plurality of sensors for detecting pressure or flatness distribution in a width direction of a rolled product which is partially wrapped around the roll; and
a cooling device for cooling the roll and having a cooling shell formed as a circular section for covering a surface region of the roll, the cooling device further including a bearing located in an edge region of the circular section and formed as a pivot joint provided with a rot

Assignees

• Sms Group Gmbh

Inventors

• Kipping Matthias
• Alken Johannes
• Seidel Ralf
• Mueller Torsten
• Treude Magnus

Classifications

• B21B27/10 Primary

  externally · CPC title

• B21B2027/103

  cooling externally · CPC title

• B21B38/02

  for measuring flatness or profile of strips · CPC title

• G01B3/12

  Measuring wheels · CPC title

• B21B31/02

  Rolling stand frames {or housings}; Roll mountings {; Roll chocks} · CPC title