A method for controlling the cooling water flow rate of twin-roll thin strip continuous casting rolls

A technology of cooling water flow rate and twin-roll thin strip, which is applied in the field of thin strip continuous casting technology, to achieve the effect of simple and reliable water supply system, rapid adjustment method, and ensure cooling uniformity

Active Publication Date: 2018-04-27
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method also uses the water temperature difference and water volume to calculate the heat taken away by the cooling water, it is used to reverse the roller surface temperature.

Method used

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  • A method for controlling the cooling water flow rate of twin-roll thin strip continuous casting rolls
  • A method for controlling the cooling water flow rate of twin-roll thin strip continuous casting rolls
  • A method for controlling the cooling water flow rate of twin-roll thin strip continuous casting rolls

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Embodiment Construction

[0037] The twin-roll thin strip continuous casting process such as figure 1 As shown, the molten steel in the tundish 5 is evenly distributed through the nozzle 6 and the distributor 7 in the space surrounded by the two casting rolls 1a, 1b with cooling water inside and the ceramic plates 2a, 2b As the casting rolls rotate in opposite directions, the molten steel solidifies on the surface of the casting rolls and then forms a thin cast strip 3 at the smallest gap between the two casting rolls.

[0038] The structure of the cooling water channel inside the roll will be described in detail below in conjunction with the casting roll 1a.

[0039] Such as figure 2 , image 3 As shown, the casting roll includes a roll core 18 and a roll sleeve 16. Holes are processed on the roll core and the roll sleeve for cooling water to enter and exit, thereby forming two separate cooling water passages 1 and 2 inside.

[0040]Among them, the cooling water passage 1 includes a water inlet 14...

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Abstract

A method for controlling cooling water flow of twin-roll strip continuous casting rolls, each casting roll has more than one water inlet and corresponding water outlet, correspondingly, more than one independent cooling water channel is formed inside each casting roll A flow regulating valve is installed at the water outlet of each cooling water channel to regulate the flow of cooling water passing through the cooling water channel. A water pump with adjustable flow rate is used to provide cooling water to the two casting rolls. At the same time, the flow controller monitors the cooling water flow value qn in each cooling water channel of the casting roll, and averages the cooling water flow rate in the cooling water channel according to the flow value qn Value deviation, adjust the corresponding flow regulating valve to change the cooling water flow in the corresponding cooling water channel, and finally achieve the same flow rate in each cooling water channel in a single casting roll, so as to achieve uniform cooling intensity inside the casting roll. The method of the invention has the advantages of high cooling water flow control precision, fast response speed and the like.

Description

technical field [0001] The invention relates to thin strip continuous casting technology, in particular to a method for controlling the cooling water flow of twin-roll thin strip continuous casting rolls. Background technique [0002] The typical production process of twin-roll thin strip continuous casting technology is: the molten steel is evenly distributed in the space surrounded by two counter-rotating, water-cooled casting rolls and ceramic material baffles to form a molten pool, and the molten steel is on the rollers. The surface solidifies and forms a thin strip between two casting rolls. [0003] As described in the typical process, the casting roll generally has a water inlet and a water outlet for cooling water. The cooling water passes into the roll through the water inlet and enters a number of penetrating rolls that are generally located below the roll surface and evenly arranged along the circumference of the roll surface. The cooling water flows through the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/22B22D11/06
Inventor 叶长宏张健于艳张青周坚刚
Owner BAOSHAN IRON & STEEL CO LTD
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