A method and device for controlling the cooling intensity of twin-roll strip continuous casting rolls

A technology of twin-roll thin strip and cooling intensity, which is applied in the field of controlling the cooling intensity of twin-roll thin strip continuous casting rolls, to achieve uniform and reasonable cooling channels, ensure cooling uniformity, and reliable means

Active Publication Date: 2018-06-26
BAOSHAN IRON & STEEL CO LTD
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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 and device for controlling the cooling intensity of twin-roll strip continuous casting rolls
  • A method and device for controlling the cooling intensity of twin-roll strip continuous casting rolls
  • A method and device for controlling the cooling intensity of twin-roll strip continuous casting rolls

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Embodiment Construction

[0040] see figure 1 , which shows the twin-roll thin strip continuous casting process, the molten steel in the tundish 5 is uniformly distributed and flowed on the roll surfaces of two casting rolls 1a and 1b with cooling water inside through the nozzle 6 and the distributor 7 A molten pool is formed in the space surrounded by 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 casting belt 3 at the smallest gap between the two casting rolls.

[0041] like Figure 2 ~ Figure 6 As shown, a twin-roll thin strip continuous casting roll of the present invention includes a roll core 18 and a roll sleeve 16, and the roll sleeve is combined with the roll core by a shrink-fit connection or a mechanical connection, wherein the thickness of the roll sleeve 16 is 55-100mm, in the roll sleeve 16, at the position of 10-55mm on the roll surface, a number of long holes 11, 12 par...

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Abstract

The invention provides a method and a device for controlling the cooling strength of a double-roll thin-strip continuous casting roll. Each casting roll is provided with one or a plurality of water inlets and one or a plurality of water outlets corresponding to the water inlets, so that one or a plurality of independent cooling water channels are formed in the casting roll. Water outlets of the cooling water channels are provided with flow regulating valves. A cooling controller calculates heat Qn brought away in unit time by cooling water in each cooling water channel in each casting roll according to the cooling water temperature t0 of the water inlet of each cooling water channel of the casting roll and the flow qn, temperature tn and pressure pn of the cooling water of the water outlet of each cooling water channel, and the heat Qn brought away in unit time by the cooling water in the cooling water channels in each casting roll is identical. The water flow qn of the cooling water channels is regulated according to the difference between total heat sigma Qn and a target value Q of the heat brought away in unit time by the cooling water in the cooling water channels of each casting roll. Finally, the heat brought away in unit time by the cooling water in each casting roll is regulated to be identical to the target heat value Q.

Description

technical field [0001] The invention relates to a twin-roll strip continuous casting process, in particular to a method for controlling the cooling intensity 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 enters the roll through the water inlet and enters the cooling long holes uniformly arranged along the circumference of the roll surface under the roll surface. When water flows through these long cooling holes, it takes away the heat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/06B22D11/22
Inventor 叶长宏樊俊飞周坚刚方园
Owner BAOSHAN IRON & STEEL CO LTD
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