Rolling temperature control device and control method thereof
A technology of coiling temperature and control device, applied in the direction of temperature control, etc., can solve the problem that the steel plate cannot be cooled at the same speed
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no. 1 approach
[0042]
[0043] The control system S of the first embodiment controls the cooling rate of the steel plate 151 of the rolled object rolled by the steel rolling machine 152 and the temperature of the steel plate 151 when coiled by the down coiler 154 to obtain uniform metallurgical properties and desired mechanical properties.
[0044] The coiling temperature control device 100 in the control system S is provided with a cooling head priority calculation means 114. The cooling head priority calculation means 114 reads the set steel plate target cooling rate of the rolled steel plate 151, and based on this value and On the basis of the steel plate (151) speed calculation of the water-cooling necessary distance, the cooling heads 160 (160a, 160b) included in the water-cooling necessary distance are preferentially turned on, and the priority order is given to each cooling head 160 so as to satisfy the target cooling speed. This information is output to the cooling head priority st...
no. 2 approach
[0264] In the first embodiment, the case where the priority order of the cooling head 160 is determined in association with the highest speed of the steel plate 151 is exemplified. However, in the case of this method, there occurs a phenomenon that when the speed of the steel plate (151) is not the highest speed, the achieved cooling speed becomes faster than the target value corresponding to the speed of the steel plate (151).
[0265] In the second embodiment, the priority order of the cooling heads 160 is switched according to the speed of the steel plate 151 for the purpose of accurately achieving the target cooling speed with respect to various steel plate (151) speeds achieved in speed patterns.
[0266] Figure 15 It is a flowchart of processing executed by the cooling head priority calculation means 114 of the second embodiment.
[0267] exist Figure 15 In S151, the target cooling rate and the speed pattern of the steel plate 151 are read from the target cooling rat...
no. 3 approach
[0301] In the third embodiment, due to the cooling capacity of the coiling cooling device 153, the target cooling rate cannot be satisfied, or the necessary distance for water cooling satisfying the target cooling rate is ensured, and the setting calculation is performed. figure 1 In the algorithm executed by the control command calculation means 111 shown, processing when the coiling temperature fails to reach the target temperature is added.
[0302] Figure 19 It is a flowchart showing the processing of the control command calculation unit 111 of the third embodiment to which such processing is added.
[0303] Figure 19 S191-196 of the first embodiment and Figure 10 The processing of the control command calculation mechanism 111 shown in is the same, but otherwise, after the setting calculation is completed, Figure 19 In S197, it is judged whether the target coiling temperature and the target cooling rate are reached.
[0304] In the case of both ( Figure 19 S197 ...
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