Hot continuous rolled strip steel coiling dual detection method

Abstract

The invention discloses a hot continuous rolled strip steel coiling dual detection method and belongs to the field of automatic control over the coiling temperature of hot continuous rolled strip steel. The method is characterized in that two temperature detectors are arranged at an outlet of laminar cooling equipment and located between the laminar cooling equipment and a coiling machine, wherein the two temperature detectors meet the following conditions that (1) the distance between the detectors and a rolling center line in the horizontal direction is no larger than 4 meters, (2) the distance between the detectors and the rolling center line in the vertical height direction is no larger than 3 meters, and (3) the two temperature detectors have different detection angles, with the horizontal line as a reference, the detection angle of one temperature detector is 35-45 degrees, the detection angle of the other temperature detector is 35-40 degrees, and two temperature detection values T1 and T2 are input into a first-stage controller simultaneously. The situation that strip steel temperature detection is affected when water exists on the strip steel locally is eliminated, stability of control over strip steel coiling temperature is achieved, the product performance and the qualified rate are improved, and good benefits are gained.

Description

technical field

[0001] The invention belongs to the field of automatic control of coiling temperature of hot strip steel. Background technique

[0002] The hot strip is rolled by the finishing stand, and then enters the coiler after laminar flow cooling. After laminar cooling, there is a temperature detection instrument to detect the strip temperature, that is, the coiling temperature. Since the water sprayed on the laminar cooling side cannot ensure that the water falling on the surface of the strip is blown clean, the detection of the coiling temperature of the strip will be inaccurate, which will affect the control of the coiling temperature, and eventually lead to the failure of the performance of the strip. effective guarantee. Contents of the invention

[0003] The purpose of the invention is to solve the problem of inaccurate detection accuracy of the existing laminar cooling and coiling temperature, so as to ensure the control of the coiling temperature of the ho...

Examples

Embodiment 1

[0012] Embodiment 1: double detection method for hot rolling strip steel coiling, two temperature detectors are set at the exit of the laminar flow cooling equipment and between the laminar flow cooling equipment and the coiler, and the two temperature detectors meet the following conditions: (1) The horizontal distance from the rolling center line is 3 meters;

[0013] (2) The vertical height is 2 meters from the rolling center line;

[0014] (3) The detection angles of the two temperature detectors are different. Based on the horizontal line, the detection angle of one temperature detector is 42°, and the detection angle of the other temperature detector is 38°. The two temperature detection values ​​T1, T2 is input to the primary controller at the same time.

[0015] The channels of the temperature detector are U264 and U265 modules, the model is 57.806.2753.0 of Wieland Company; the temperature detector is Williamson Company of the United States, the model is PRO41-20-C-F...

Embodiment 2

[0016] Embodiment 2: double detection method for hot strip coiling, two temperature detectors are set at the outlet of the laminar flow cooling equipment and between the laminar flow cooling equipment and the coiler, and the two temperature detectors meet the following conditions: (1) The horizontal distance from the rolling center line is 2 meters;

[0017] (2) The vertical height is 1 meter from the rolling center line;

[0018] (3) The detection angles of the two temperature detectors are different. Based on the horizontal line, the detection angle of one temperature detector is 35°, and the detection angle of the other temperature detector is 35°. The two temperature detection values ​​T1, T2 is input to the primary controller at the same time.

[0019] The channels of the temperature detector are U264 and U265 modules, the model is 57.806.2753.0 of Wieland Company; the temperature detector is Williamson Company of the United States, the model is PRO41-20-C-FOV10FT / 35-A-W...

Embodiment 3

[0020] Embodiment 3: double detection method for hot strip coiling, two temperature detectors are set at the outlet of the laminar flow cooling equipment and between the laminar flow cooling equipment and the coiler, and the two temperature detectors meet the following conditions: (1) The horizontal distance from the rolling center line is 2 meters;

[0021] (2) The vertical height is 1 meter from the rolling center line;

[0022] (3) The detection angles of the two temperature detectors are different. Based on the horizontal line, the detection angle of one temperature detector is 35°, and the detection angle of the other temperature detector is 40°. The two temperature detection values ​​T1, T2 is input to the primary controller at the same time.

[0023] The channels of the temperature detector are U264 and U265 modules, the model is 57.806.2753.0 of Wieland Company; the temperature detector is Williamson Company of the United States, the model is PRO41-20-C-FOV10FT / 35-A-W...

technical field

[0001] The invention belongs to the field of automatic control of coiling temperature of hot strip steel. Background technique

[0002] The hot strip is rolled by the finishing stand, and then enters the coiler after laminar flow cooling. After laminar cooling, there is a temperature detection instrument to detect the strip temperature, that is, the coiling temperature. Since the water sprayed on the laminar cooling side cannot ensure that the water falling on the surface of the strip is blown clean, the detection of the coiling temperature of the strip will be inaccurate, which will affect the control of the coiling temperature, and eventually lead to the failure of the performance of the strip. effective guarantee. Contents of the invention

[0003] The purpose of the invention is to solve the problem of inaccurate detection accuracy of the existing laminar cooling and coiling temperature, so as to ensure the control of the coiling temperature of the ho...

Examples

Embodiment 1

[0012] Embodiment 1: double detection method for hot rolling strip steel coiling, two temperature detectors are set at the exit of the laminar flow cooling equipment and between the laminar flow cooling equipment and the coiler, and the two temperature detectors meet the following conditions: (1) The horizontal distance from the rolling center line is 3 meters;

[0013] (2) The vertical height is 2 meters from the rolling center line;

[0014] (3) The detection angles of the two temperature detectors are different. Based on the horizontal line, the detection angle of one temperature detector is 42°, and the detection angle of the other temperature detector is 38°. The two temperature detection values ​​T1, T2 is input to the primary controller at the same time.

[0015] The channels of the temperature detector are U264 and U265 modules, the model is 57.806.2753.0 of Wieland Company; the temperature detector is Williamson Company of the United States, the model is PRO41-20-C-F...

Embodiment 2

[0016] Embodiment 2: double detection method for hot strip coiling, two temperature detectors are set at the outlet of the laminar flow cooling equipment and between the laminar flow cooling equipment and the coiler, and the two temperature detectors meet the following conditions: (1) The horizontal distance from the rolling center line is 2 meters;

[0017] (2) The vertical height is 1 meter from the rolling center line;

[0018] (3) The detection angles of the two temperature detectors are different. Based on the horizontal line, the detection angle of one temperature detector is 35°, and the detection angle of the other temperature detector is 35°. The two temperature detection values ​​T1, T2 is input to the primary controller at the same time.

[0019] The channels of the temperature detector are U264 and U265 modules, the model is 57.806.2753.0 of Wieland Company; the temperature detector is Williamson Company of the United States, the model is PRO41-20-C-FOV10FT / 35-A-W...

Embodiment 3

[0020] Embodiment 3: double detection method for hot strip coiling, two temperature detectors are set at the outlet of the laminar flow cooling equipment and between the laminar flow cooling equipment and the coiler, and the two temperature detectors meet the following conditions: (1) The horizontal distance from the rolling center line is 2 meters;

[0021] (2) The vertical height is 1 meter from the rolling center line;

[0022] (3) The detection angles of the two temperature detectors are different. Based on the horizontal line, the detection angle of one temperature detector is 35°, and the detection angle of the other temperature detector is 40°. The two temperature detection values ​​T1, T2 is input to the primary controller at the same time.

[0023] The channels of the temperature detector are U264 and U265 modules, the model is 57.806.2753.0 of Wieland Company; the temperature detector is Williamson Company of the United States, the model is PRO41-20-C-FOV10FT / 35-A-W...