Dynamic subsection control method of tinned product annealing temperature

A technology of annealing temperature and subsection control, applied in the direction of heat treatment process control, manufacturing tools, heat treatment equipment, etc., can solve the problems of long heating time, inability to apply feedforward control of the same coil of strip steel, and hot bending furnace.

Active Publication Date: 2018-12-18
SHANGHAI MEISHAN IRON & STEEL CO LTD
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AI Technical Summary

Problems solved by technology

[0003] In the current "one-stage" temperature control system, the "genetic factor" of strip temperature control can only be applied to the feedback control of the next strip of the same specification, but cannot be applied to the feedforward control of the same strip. Moreover, generally tin-plated products are relatively thin, with an average thickness of less than 0.25mm,

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  • Dynamic subsection control method of tinned product annealing temperature
  • Dynamic subsection control method of tinned product annealing temperature
  • Dynamic subsection control method of tinned product annealing temperature

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Embodiment 1

[0091] Embodiment 1: see figure 1 , figure 2 , a dynamic segmental control method for the annealing temperature of tin-plated products, see Figure 5 , Figure 5 For marking the dynamic segmentation of the strip. Generally, the length of Section I is the length of unstable rolling of strip steel. The setting of this length is generally obtained through a large number of field test data, and then the data is analyzed and screened; according to the test analysis of field collected data, the general strip The steel first undergoes fluctuating rolling of about 300 meters at the head, and then basically enters a relatively stable rolling process, and the reliability of various index values ​​obtained after 600 meters is relatively high. Before heating the strip steel at high temperature, the temperature and "genetic factor" of the strip steel section I in the furnace are calculated according to the strip steel temperature in the preheating section and the temperature in the fur...

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Abstract

The invention relates to a dynamic subsection control method of a tinned product annealing temperature. The dynamic subsection control method is characterized by comprising the following steps: 1, setting and calculating the temperature of a first heating section of strip steel in a furnace; and 2, setting and calculating the temperature of the nth heating section of strip steel in the furnace, wherein n is greater than 1. According to the technical scheme, the dynamic subsection type control thinking can be applied to the existing continuous annealing automatic control system, the strip steeltemperature and the heating temperature in the furnace are set in a dynamic subsection manner in the length direction of strip steel, the high-efficiency numerical computation method is adopted to apply the genetic factor of control of each section to the feedforward control of the strip steel, and the power of a radiant tube is subjected to dynamic fine adjustment through the feedforward calculation result to adjust the surface temperature of strip steel, so that the temperature control of the strip steel is more precise.

Description

technical field [0001] The invention relates to a control method, in particular to a dynamic segmental control method for the annealing temperature of tin-plated products, and belongs to the technical field of continuous annealing automatic control. Background technique [0002] In the operation control of the continuous annealing unit, the temperature control of the strip is the most critical and the most complicated. The strip heating process is a complex working condition system with large inertia hysteresis and multiple variables. Conventional, fixed, A single control method cannot achieve the control goal at all. Therefore, advanced enterprises have introduced automatic annealing control systems, using computer simulation technology, through functions such as feedforward, feedback, and self-learning, to conduct multivariate analysis of the temperature of the strip steel in the annealing furnace, and finally Realize the smooth transition of strip temperature and the smoo...

Claims

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Application Information

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IPC IPC(8): C21D11/00C21D9/52C21D1/26
CPCC21D1/26C21D9/52C21D11/00
Inventor 李灿珍贾银芳王宏学
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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