Cooling section having lower spray bar

Patent metadata

Field	Value
Publication number	US-9878358-B2
Application number	US-201414779575-A
Country	US
Kind code	B2
Filing date	Feb 19, 2014
Priority date	Mar 25, 2013
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A cooling section for a flat rolled material ( 1 ) has a frame structure ( 2 ), in which a plurality of transport rollers ( 3 ) for the flat rolled material ( 1 ) are arranged one after another transversely to a transport direction (x) and spaced apart (a). Each transport roller ( 3 ) mounted in the frame structure ( 2 ) rotates about a respective roller axis ( 4 ). The roller axes ( 4 ) run orthogonally to the transport direction (x) and horizontally, so that the transport rollers ( 4 ) form a pass line ( 5 ) for the flat rolled material ( 1 ). At least one lower spray bar ( 6 ) arranged beneath the pass line ( 5 ) has a base block ( 7 ) beneath the transport rollers ( 3 ) for a liquid coolant ( 8 ). Guide sections ( 9 ) project upwards from the base block ( 7 ) into spaces between the transport rollers ( 3 ). Each guide section ( 9 ) has an upper terminating element ( 10 ) on which spray nozzles ( 11 ) are arranged, which feed the coolant ( 8 ), which had been fed into the base block ( 7 ), to be sprayed onto the flat rolled material ( 1 ) from below. The guide sections ( 9 ) have a respective length ( 1 ) in the transport direction (x) of the flat rolled material ( 1 ). That length ( 1 ) decreases at least in the vicinity of the respective upper terminating elements ( 10 ), in the direction of the respective upper terminating element ( 10 ).

First claim

The invention claimed is:

1. A cooling section for a flat rolled material, the cooling section comprising:
a structural frame and a plurality of transport rollers arranged in the frame, one transport roller being behind another in a first direction of transport of the flat rolled material; in the first direction, immediately neighboring ones of the transport rollers being separated by a gap; each of the transport rollers being mounted in the structural frame to rotate about a respective roller axis for the roller, and the roller axes being aligned orthogonally to the first direction and being aligned horizontally, so that the transport rollers form a pass-line for the flat rolled material to pass over the rollers;
at least one lower spray bar arranged underneath the pass-line, the at least one spray bar having a base block arranged underneath the transport rollers, and the base block being configured to be fed a liquid coolant; and
a plurality of feeder sections projecting upwards from the base block and into spaces between the immediately neighboring ones of the transport rollers; each feeder section having an upper closing element and spray nozzles arranged on the respective upper closing elements for spraying liquid that was fed into the base block onto the flat rolled material from below; each of the feeder sections having a first dimension in the first direction, and, at least near each of the upper closing elements, the first dimension and a second dimension of the feeder section decrease in a second direction towards the upper closing element, the first dimension being measured in a first plane, the second dimension being measured in a second plane and in a third direction of the roller axes, the second plane being perpendicular to the first plane.

2. The cooling section as claimed in claim 1 , wherein the first dimension is a width of the feeder section, and, in the region of the transport rollers, the widths of the feeder sections are at most 80% of a gap (a) between each two immediately neighboring ones of the transport rollers.

3. The cooling section as claimed in claim 1 , wherein the first dimension is a width of the feeder section and each of the feeder sections has a lower part which abuts the base block and has an upper part which contains the respective closing element, and in the region of the respective lower part the width of each feeder section is constant, while in the region of the respective upper part, the width of each feeder section decreases in the second direction, while the respective lower part and the respective upper part are fastened together.

4. The cooling section as claimed in claim 3 , wherein the second dimension of the feeder section is a breadth and, in the third direction, the breadth of each feeder section is constant, in the region of the respective lower part and in the region of the respective upper part, the breadth decreases in the second direction.

5. The cooling section as claimed in claim 1 , wherein the second dimension of the feeder section is a breadth, and in the third direction, the breadth of each of the feeder sections, at least near the upper closing element of the feeder section, decreases in the second direction.

6. The cooling section as claimed in claim 1 , wherein the spray nozzles are screwed into the respective upper closing element.

7. The cooling section as claimed in claim 1 , wherein:
the spray nozzles are arranged on the upper closing element, the spray nozzles on each closing element including at least two outer rows of spray nozzles, the outer rows of spray nozzles of the upper closing elements being arranged one behind another in the first; each spray nozzle in each outer row having a principal spray direction, wherein the principal spray direction has a vertical component oriented upward from below and a horizontal component, and the horizontal components of the principal spray directions of the outer rows of the spray nozzles are oriented away from each other.

8. The cooling section as claimed in claim 7 , wherein:
the spray nozzles on each upper closing element include at least one central row of the spray nozzles and in the first direction, the central row of spray nozzles is arranged between the outer rows of spray nozzles, and
the spray nozzles of the central row have a principal spray direction which is oriented vertically upwards from below.

9. The cooling section as claimed in claim 1 , wherein the first dimension is a width of the feeder section and the width of each feeding section decreases steplessly in the second direction.

10. The cooling section as claimed in claim 1 , further comprising strengthening ribs arranged at least in the base block.

11. The cooling section as claimed in claim 10 , further comprising strengthening ribs arranged in or on the feeder sections.

12. The cooling section as claimed in claim 1 , further comprising means for feeding the liquid coolant into the base block in a direction parallel to the third direction.

13. The cooling section as claimed in claim 1 , further comprising at least one upper spray bar, configured to have a liquid coolant fed therein, the spray bar having an underside on which further spray nozzles are arranged, the further spray nozzles being configured to spray coolant, that was fed into the upper spray bar, from above onto the flat rolled material.

Assignees

• Primetals Technologies Austria GmbH

Inventors

• Chen Jian
• Ehgartner Sieglinde
• Karl Reinhard
• Opitz Erich
• Poeschl Florian
• Seilinger Alois
• Trickl Thomas

Classifications

• B21B45/0218 Primary

  for strips, sheets, or plates (B21B45/023, B21B45/0233 take precedence) · CPC title

• B21B45/0233

  Spray nozzles, Nozzle headers; Spray systems · CPC title

• B21B39/12

  Arrangement or installation of roller tables in relation to a roll stand · CPC title

• B21B45/02 Primary

  for lubricating, cooling, or cleaning {(in particular in combination with forging or pressing devices B21B15/005, control of flatness or profile using lubricating or cooling B21B37/44)} · CPC title