Method and device for preventing strip steel from deviation in vertical annealing furnace
A vertical annealing furnace and strip steel technology, applied in the field of iron and steel smelting, can solve problems such as deviation, unit shutdown, and reduced production efficiency
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Embodiment 1
[0043] This embodiment provides a method for preventing strip steel from deviating in a vertical annealing furnace, such as figure 1 As shown, the method includes:
[0044] S110: Obtain the deviation data of the strip in the vertical annealing furnace, and determine the first deviation factor of the serpentine deviation and the second deviation factor of the instantaneous deviation according to the deviation data;
[0045] In this step, the deviation of the strip at the exit of the heating section of the vertical annealing furnace can be divided into serpentine deviation and instantaneous deviation. In order to quantitatively analyze the deviation, the deviation of the strip in the vertical annealing furnace can be obtained. The deviation data is used to determine the first deviation factor of the serpentine deviation and the second deviation factor of the instant deviation according to the deviation data.
[0046] Here, the first deviation factor includes: the exit temperature of t...
Embodiment 2
[0080] Corresponding to the first embodiment, this embodiment also provides a device for preventing strip steel from deviating in the vertical annealing furnace, such as figure 2 As shown, the device includes: an acquisition unit 21, a first determination unit 22, a second determination unit 23, a third determination unit 24, a judgment unit 25, a first adjustment unit 26, and a second adjustment unit 27; wherein,
[0081] The deviation of the strip at the exit of the heating section of the vertical annealing furnace can be divided into snake deviation and instant deviation. In order to quantitatively analyze the deviation, the acquisition unit 21 is used to obtain the strip steel in the vertical annealing furnace. The deviation data, the first deviation factor of the snake-like deviation and the second deviation factor of the instant deviation are determined according to the deviation data. Here, the first deviation factor includes: the exit temperature of the heating section in...
Embodiment 3
[0106] In actual application, when the method provided in Example 1 and the device provided in Example 2 are used in a certain unit, it is determined that the unit has a serpentine deviation, then the temperature at the outlet area of the vertical furnace roll heating section is changed from 920°C ( Normal mode) is reduced to 900°C (proportional mode), successfully avoiding the "snake" deviation of the strip at the exit of the heating section, such as image 3 As shown, the heating mode of the heating section before the optimization is the normal mode, and the correction cylinder acts periodically, which indicates that the strip is "snake-shaped" at the exit (pointed by the arrow on the left). The heating mode of the heating section after the optimization is the proportional mode. , The correction cylinder has no periodic action, and presents a straight line (pointed by the arrow on the right), which indicates that the strip has no “snake deviation” at the exit, and the effect...
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