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BMD production line speed control method based on strip steel surface brightness detection

A technology of line speed control and surface brightness, which is applied in the direction of rolling mill control devices, workpiece surface treatment equipment, metal rolling, etc., can solve the problems of poor reliability of the nozzle clamping mechanism, and achieve descaling effect, reliability, and The effect on production yield

Active Publication Date: 2020-11-27
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the harsh environment of the injection system, the reliability of the nozzle clamping mechanism that controls the tilt angle is poor

Method used

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  • BMD production line speed control method based on strip steel surface brightness detection
  • BMD production line speed control method based on strip steel surface brightness detection
  • BMD production line speed control method based on strip steel surface brightness detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] S1. Set the target gray value G set =200;

[0055] S2, the received actual gray value G act = 160;

[0056] S3. Gray value deviation ΔG=160-200=-40;

[0057] S4, the pinch roller speed S calculated last time old =0.3m / s, calculate the gain coefficient k G

[0058] S5. Calculate the pinch roller speed adjustment ΔS, ΔS=0.001125×(-40)=-0.045;

[0059] S6. Limit the adjustment amount, when ΔS>ΔS max , ΔS=ΔS max ; when ΔSmax , ΔS=-ΔS max ; where, ΔS max Indicates the maximum adjustment amount, unit: m / s;

[0060] S7, calculating the current pinch roller speed S new = 0.3-0.045 = 0.255m / s;

[0061] S8. Save the current pinch roller speed S old = 0.255m / s.

Embodiment 2

[0063] S1. Set the target gray value G set =200;

[0064] S2, the received actual gray value G act =130;

[0065] S3. Gray value deviation ΔG=130-200=-70;

[0066] S4, the pinch roller speed S calculated last time old =0.25m / s, calculate the gain coefficient k G

[0067] S5. Calculate the pinch roller speed adjustment ΔS, ΔS=0.0009375×(-70)=-0.065625;

[0068] S6. Limit the adjustment amount, when ΔS>ΔS max , ΔS=ΔS max ; when ΔSmax , ΔS=-ΔS max ; where, ΔS max Indicates the maximum adjustment amount, unit: m / s; because the calculation result is less than -ΔS max , after limiting ΔS=-0.05

[0069] S7, calculating the current pinch roller speed S new = 0.25-0.05 = 0.2m / s;

[0070] S8. Save the current pinch roller speed S old = 0.2m / s.

[0071] In summary, adopting the technical solution of the present invention, the BMD production line speed control method based on strip steel surface brightness detection first obtains the size of the gray value deviation and c...

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Abstract

The invention discloses a BMD production line speed control method based on strip steel surface brightness detection, and relates to the technical field of strip steel surface brightness detection. The method comprises the steps that firstly, the gray value deviation is obtained, and an automatic control gain coefficient is calculated; then, the gray value deviation is multiplied by the control gain coefficient to obtain the adjustment amount of the pinch roll speed, and the amplitude of the adjustment amount is limited; and finally, the amplitude-limited adjustment amount is added to the pinch roll speed calculated last time, and the current pinch roll speed is obtained and stored at the same time. According to the BMD production line speed control method based on strip steel surface brightness detection, the descaling, flushing, purging and drying functions of the whole BMD production line are comprehensively considered, the reliability and descaling effect of an injection system canbe guaranteed, and the production yield of the BMD production line can be guaranteed as well.

Description

technical field [0001] The invention relates to the technical field of strip steel surface brightness detection, and more specifically refers to a BMD production line speed control method based on strip steel surface brightness detection. Background technique [0002] Surface oxides (commonly known as scales) after hot-rolling of metal materials usually need to be effectively removed before post-processing, which is called descaling. Currently, the commonly used chemical pickling process always suffers from large pollution, high cost, and unstable quality. Many flaws. Through BMD technology (Baosteel Mechanical Descaling technology, referred to as BMD technology), this process adopts the mixed jet method of water + abrasive particles, and the descaling is realized by continuous beating and grinding of the jet medium on the metal surface. Schematic diagram of BMD process flow figure 1 As shown, A is the mixed jet injection system, B is the medium recovery system, C is the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/08B21B37/00
CPCB21B45/08B21B37/00
Inventor 徐江华段明南房鑫杨向鹏
Owner BAOSHAN IRON & STEEL CO LTD
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