Stopper rod flow control system control method for improving stability of liquid level of crystallizer
A control method and crystallizer technology, which are applied in the direction of manufacturing tools, casting melt containers, casting equipment, etc., to achieve the effects of reducing the size of liquid level fluctuations, the incidence of slag inclusion defects and surface cracks, and improving sensitivity
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[0043] Example 1: see figure 1 , a control method for a plug rod flow control system for improving the stability of the liquid level of the crystallizer, the control method comprising the following steps:
[0044] Step 1: The method for determining the typical amount of steel passing through the submerged nozzle in the actual production process;
[0045] Theoretically, the determination of the typical amount of steel passing through the immersion nozzle in the actual production process is usually calculated by the estimated production volume of steel grades and the pouring cycle, but in the actual production process, the production volume of steel grades and the pouring cycle are quite different from the design. In order to obtain the accurate production volume of steel grades and the casting cycle, the present invention obtains an arrangement diagram of the proportion of the through-steel volume by performing big data analysis on the nozzle through-steel volume in the actual...
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[0071] Specific embodiment: a control method for a plug rod flow control system for improving the stability of the liquid level of a crystallizer, the control method includes the following steps:
[0072] It is aimed at slabs with casting speeds ranging from 0.8 to 1.8 m / min (the cross section of the mold is 230 × 900 to 1650 mm). 2 ).
[0073] Step 1: determine the typical amount of steel passing through the submerged nozzle;
[0074] The amount of steel passing through the nozzle = the nominal width of the slab × the nominal thickness of the slab × the density of the slab × the pulling speed of the continuous casting machine Formula (1)
[0075] Typical steel throughput (Q typ )=MAX{annual steel throughput ratio i}, where i is a natural number that is generally a multiple of 0.5t / min steel throughput. Formula (2)
[0076] Table 1 Distribution of main steel grades in a factory
[0077] Throughput of steel, t / min 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 ...
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