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Coiling cooling control device and coiling cooling control method

A technology of cooling control and cooling device, applied in workpiece cooling device, temperature control, metal rolling, etc., can solve problems such as the reduction of steel plate quality, and achieve the effect of improving manufacturing quality

Active Publication Date: 2018-09-14
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the intermediate air cooling time must be controlled within a certain time range, and the quality of the steel plate will be reduced if it is shorter or longer than this time range.

Method used

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  • Coiling cooling control device and coiling cooling control method
  • Coiling cooling control device and coiling cooling control method
  • Coiling cooling control device and coiling cooling control method

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Embodiment Construction

[0030] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in the respective drawings, the same reference numerals are given to the common structural members, and repeated descriptions thereof are omitted.

[0031]

[0032] figure 1 It is a figure which shows the example of the structure of the winding cooling control apparatus 100 and its control object 150 in embodiment of this invention. Such as figure 1 As shown, the coiling cooling control device 100 receives various signals (the actual values ​​of the steel plate speed, the coiling temperature, etc.) from the control object 150, and outputs the control signal corresponding to the actual value to the control object 150.

[0033] Here, first, the structure of the control target 150 will be described. In the case of this embodiment, the main structural component of the control target 150 is the coiling cooling device 160 in the hot rolling system. The coili...

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Abstract

The invention provides a coiling cooling control device and method in order to improve the manufacturing quality of steel plates manufactured in a hot rolling production line. The coiling cooling control device (100) comprises a target temperature record calculation unit (120), a cooling instruction calculation unit (130), and a beader mode output unit (140), the target temperature record calculation unit (120) calculates target temperature records changed during the period of discharging the sections from a hot rolling machine (152) and moving the sections to the position of an underground coiling machine (154) for sections formed by division of a steel plate (151) in the length direction according to each specified length to enable the volume ratio of the ferritic phase of the steel plate (151) to be approximately constant between the sections, the cooling instruction calculation unit (130) calculates a cooling instruction of a cooling beader (163) of a coiling cooling device (160) for each section to enable the temperature of each section of the steel plate (151) to be consistent with the calculated target temperature record during cooling by the coiling cooling device (160), and the beader mode output unit (140) calculates an opening-closing mode of each cooling beader (163) at each specified time interval and outputs the opening-closing mode to the coiling cooling device (160) based on the calculated cooling instruction of each section.

Description

Technical field [0001] The present invention relates to a coiling cooling control device and a coiling cooling control method for controlling a coiling cooling device included in a hot rolling production line. Background technique [0002] In recent years, high-quality steel sheets such as DP (Dual Phase) steel and TRIP (Transformation Induced Plasticity: high strength and high ductility) steel have been improved. It is known that, generally, in the rolling of DP steel and TRIP steel, the holding time of the intermediate temperature during the cooling from the beginning of the cooling to the end of the cooling (hereinafter referred to as the intermediate air cooling time) has an effect on the ferrite phase The volume ratio will give a big influence. Therefore, the intermediate air cooling time must be controlled within a certain time range, and a shorter or longer time range than that will degrade the quality of the steel sheet. Therefore, in the cooling control of the steel sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/76B21B45/02
CPCB21B37/76B21B45/0203B21B45/0218
Inventor 朴珉奭鹿山昌宏林刚资
Owner HITACHI LTD
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