Three-dimensional full-flow control method for online steel plate solution treatment

A control method and solid solution treatment technology, applied in the field of control, can solve problems such as poor cooling plate shape

Active Publication Date: 2016-06-22
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a three-dimensional full-flow control method for on-line solution treatment of steel plates, which aims at the bottleneck problem of poor cooling plate shape after steel plate rolling in the application of on-line solution treatment technology, and utilizes longitudinal, transverse and up-down three-dimensional Full-flow controllable post-rolling cooling device, according to the hardness and shape of the cooled steel plate, the three-dimensional full-flow control of the cooling device ensures the hardness and shape of the online solution-treated steel plate after cooling after rolling

Method used

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  • Three-dimensional full-flow control method for online steel plate solution treatment
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  • Three-dimensional full-flow control method for online steel plate solution treatment

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Embodiment

[0067] The main parameters of a specific embodiment of the technical solution of the present invention are as follows:

[0068] Take the solution treatment of a 20mm thick steel plate of a certain steel grade as an example.

[0069] 1) Valve group design

[0070] In this example, according to the actual cooling plate shape control needs, the water cooling zone is divided into 8 water zones longitudinally, and each water zone is divided into 3 zones on the left, middle and right horizontally, separated up and down, so that a total of 6×8=48 control valve groups are designed , Each group includes a set of flow control valve and switch valve, etc., and the water flow is set separately according to the needs of the cold zone.

[0071] 2) Initial water ratio and flow setting

[0072] Water ratio

[0073] Flow rate (m 3 / h)

[0074] 3) Actual measurement of steel plate hardness and shape

[0075]

[0076] 4) Head water ratio and flow rate setting correction

[0077] Water ratio

[...

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Abstract

The invention provides a three-dimensional full-flow control method for online steel plate solution treatment, and belongs to the field of control. According to the three-dimensional full-flow control method, to solve the bottleneck problem that the plate shape is not good after a steel plate is rolled and cooled during application of the online solution treatment technology, a post-rolling cooling device capable of being controlled in a three-dimensional full-flow mode in the longitudinal direction, the transverse direction and the vertical direction is utilized, three-dimensional full-flow control over the cooling device is carried out according to the hardness and the plate shape of the cooled steel plate, and therefore the hardness and the plate shape of the rolled and cooled steel plate subjected to online solution treatment are ensured.

Description

Technical field [0001] The invention belongs to the field of control, and in particular relates to a cooling water flow control used in the online solution treatment of steel sheets after rolling. Background technique [0002] Solution heat treatment refers to a heat treatment process in which the alloy is heated to a high-temperature single-phase zone and kept at a constant temperature, so that the excess phase is fully dissolved in the solid solution and then rapidly cooled to obtain a supersaturated solid solution. [0003] The traditional solution heat treatment of steel plates is to use heat treatment equipment separate from the rolling mill for off-line heat treatment, which requires rapid cooling after reheating. This production process not only increases equipment investment, but also has a large number of processes and a long production cycle, which leads to increased steel costs and cannot meet the fast-paced mass production, which greatly restricts the improvement of eco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D11/00B21B37/44
Inventor 吴建峰王笑波刘晔朱健桦张庆峰张爱文
Owner BAOSHAN IRON & STEEL CO LTD
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