Cooling device used for hot-rolled strip production line

A technology for cooling equipment and hot-rolled strip steel, applied in metal processing equipment, workpiece surface treatment equipment, metal rolling, etc., can solve problems such as easy retention on the surface of steel plates, uneven cooling, and affecting the production quality of hot-rolled strip steel

Inactive Publication Date: 2009-09-02
TIANJIN DONGDA JINFENG ROLLING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main problem of this rapid cooling device is: the cooling water that vertically hits the surface of the steel plate has poor fluidity on the surface of the steel plate in a short period of time, and is easy to stay on the surface of the steel plate, and the cooling water that stays on the surface of the steel plate is easy to form a vapor film on the surface of the steel plate. The transitional boiling heat transfer of water will cause uneven cooling, so that the final formed hot-rolled strip steel plate is prone to large deformation, which seriously affects the production quality of hot-rolled strip steel

Method used

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  • Cooling device used for hot-rolled strip production line

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Embodiment Construction

[0020] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] figure 1 It is a side view of a cooling device used in a hot-rolled steel strip production line provided by the present invention.

[0022] see figure 1 , the present invention provides a kind of cooling equipment for hot-rolled steel strip production line, and this hot-rolled strip steel production line comprises roller table 7, and the hot-rolled strip steel plate to be cooled is placed on this roller table 7, and cooling equipment of the present invention comprises The ultra-fast cooling device and the laminar flow cooling device are two parts, wherein the ultra-fast cooling device includes a plurality of ultra-fast cold spray water headers 1 and a plurality of ultra-fast cold spray water headers 2, the ultra-fast cold spray The ...

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Abstract

The invention discloses a cooling device used for a hot rolled strip production line which comprises a roller way on which hot rolled sheets to be cooled are placed. The cooling device comprises an ultra-fast cooling device and a laminar flow cooling device, wherein the ultra-fast cooling device comprises a plurality of ultra-fast cooling water spraying upper collecting pipes and a plurality of ultra-fast cooling water spraying lower collecting pipes; the ultra-fast cooling water spraying upper collecting pipes are arranged sequentially and are perpendicular to the hot rolled strip production line; the ultra-fast cooling water spraying lower collecting pipes are arranged in the gaps of the roller way; the laminar flow cooling device comprises a high cistern, a shunting and collecting pipe, a laminar flow cooling upper collecting pipe and a laminar flow cooling lower collecting pipe; the high cistern and the shunting and collecting pipe are arranged up and down; and the high cistern, the shunting and collecting pipe, the laminar flow cooling upper collecting pipe and the laminar flow cooling lower collecting pipe are connected with each other through distribution pipes. The cooling device used for the hot rolled strip production line can cool hot rolled sheets quickly and evenly to meet the production demands of special steel grades, is beneficial to form industrial scale and has significant productive practice meaning.

Description

technical field [0001] The invention relates to post-rolling cooling technology for a hot-rolled strip steel production line in the technical field of metal processing, in particular to a cooling device for a hot-rolled strip steel production line. Background technique [0002] At present, for the production line of hot-rolled strip steel, different cooling rates are usually required to obtain the required structure and properties of the hot-rolled strip steel after rolling. For the production process of a new type of hot-rolled strip steel, it is necessary to rapidly cool the hot-rolled steel from 800-1000°C to a temperature range of 600-700°C after rolling, and then cool it to the strip coil by adopting an appropriate cooling rate. Take the temperature range. In the current conventional process and short-process production lines, laminar flow cooling devices are generally used to cool hot strips after rolling, but the cooling capacity of laminar flow cooling devices is lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02
CPCY02P70/10
Inventor 王昭东王国栋袁国
Owner TIANJIN DONGDA JINFENG ROLLING TECH
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