A three-dimensional full-flow control method for on-line solid solution treatment of steel plates
A control method and solution treatment technology, applied in the field of control, can solve problems such as poor cooling plate shape
Active Publication Date: 2018-01-30
BAOSHAN IRON & STEEL CO LTD
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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
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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 type as an example.
[0069] 1) valve group design
[0070] In this example, according to the actual cooling plate shape control needs, the water cooling area is divided vertically into 8 water areas, and each water area is divided horizontally into 3 areas on the left, middle, and right, separated up and down, so that a total of 6×8=48 control valve groups are designed. , each group includes a set of flow regulating valve and switching 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 (m 3 / h)
[0074] 3) Hardness and shape measurement of steel plate
[0075]
[0076] 4) Head water ratio and flow setting correction
[...
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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, in particular to a flow control of cooling water used in online solid solution treatment after steel plate rolling. Background technique [0002] Solution heat treatment refers to the heat treatment process in which the alloy is heated to a high-temperature single-phase region and maintained at a constant temperature, so that the excess phase is fully dissolved into the solid solution and then rapidly cooled to obtain a supersaturated solid solution. [0003] The traditional solution heat treatment of steel plate 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 many processes and a long production cycle, which leads to an increase in the cost of steel, which cannot meet the fast-paced production of large quantities, and greatly restricts t...
Claims
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IPC IPC(8): B21B37/44C21D11/00
Inventor 吴建峰王笑波刘晔朱健桦张庆峰张爱文
Owner BAOSHAN IRON & STEEL CO LTD