Dynamic segmental control method of annealing temperature of tin-plated products
A technology of segmental control and annealing temperature, which is applied in the direction of heat treatment process control, manufacturing tools, furnaces, etc., can solve the problems of inability to apply the same coil of strip feedforward control, in the hot bending furnace, long heating time, etc. The effect of market competitiveness, good heating uniformity, yield and performance improvement
Active Publication Date: 2021-08-13
SHANGHAI MEISHAN IRON & STEEL CO LTD
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
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, and the length of each coil of strip steel is more than 10,000 meters. The heating time in the furnace is relatively long, and the "one-stage" temperature control is likely to cause "stringing" of the strip steel in the furnace. ", "hot ladle song" and other quality accidents caused by broken belts in the furnace, the existing technology has not solved this technical problem
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0089] 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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a dynamic segmental control method for the annealing temperature of tin-plated products, which is characterized in that the control method includes the following steps: 1) temperature setting and calculation of the first heating section of the strip steel in the furnace; 2) strip steel in the furnace Calculate the temperature setting of the Nth heating section (N>1). This technology can apply the "dynamic segmented" control idea to the existing continuous annealing automatic control system, dynamically set the strip temperature and furnace heating temperature in the strip length direction, and use high-efficiency numerical values Calculation method, the "genetic factor" of each temperature control is used in the feed-forward control of the strip, and the power of the radiant tube is dynamically fine-tuned through the feed-forward calculation results to adjust the surface temperature of the strip, which can make the temperature control of the strip more efficient. precision.
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
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