A control method of a hot-rolled steel coil inner ring tower type defect repairing instrument

Abstract

The application discloses a control method of a hot-rolled steel coil inner ring tower type defect repairing instrument, wherein a heavy load side oil cylinder and a light load side oil cylinder drive to move through a pipeline hydraulic system, a butt joint formed steel coil tower type is repaired by being aligned, according to L2 coil width information, the heavy load side oil cylinder and the light load side oil cylinder are driven to move at high speed, a push rod aligns the steel coil by beating a plate, the two side oil cylinders respectively reach a preparation position and stop at a position 150 mm away from the steel coil. In the application, the heavy load side oil cylinder and the light load side oil cylinder are arranged on the left and right sides of the hot-rolled steel coil and respectively drive a beating plate to the left and right sides of the steel coil, a slow forward movement of the oil cylinder is controlled by detecting a difference value of two side pressure relays, butt joint formed steel coil tower type is repaired by being aligned, and the tower type of the steel coil meets user requirements.

Description

Technical Field

[0001] This invention relates to the field of hot-rolled steel coil repair, and in particular to a control method for a hot-rolled steel coil inner ring tower-shaped defect repair instrument. Background Technology

[0002] During the production of hot-rolled steel coils, uneven material deformation during the hot rolling process can lead to the formation of a tower-shaped steel coil during coiling. Therefore, it is necessary to align and repair the left and right sides of the steel coil to structurally modify the tower-shaped steel coil and make it meet the user's requirements. Based on the above-mentioned hot-rolled steel coil production process, this solution provides a control method for a hot-rolled steel coil inner ring tower-shaped defect repair instrument. By detecting the pressure difference between the hydraulic cylinders on both sides of the steel coil, the aligning and repair effect of the steel coil is achieved by the clapping plate. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a control method for a hot-rolled steel coil inner ring tower-shaped defect repair instrument.

[0004] This invention provides the following technical solution:

[0005] This invention provides a control method for a hot-rolled steel coil inner ring tower-shaped defect repair device. The device is driven by a heavy-load side cylinder and a light-load side cylinder via a pipeline hydraulic system to align and repair the steel coil tower shape formed by the butt joint. The alignment action control process is as follows:

[0006] (1) Based on the roll width information of L2, drive the heavy-load side cylinder and the light-load side cylinder to move at high speed. The push rod and the plate are used to align the steel roll. The two cylinders reach the ready position and stop 150mm away from the steel roll.

[0007] (2) After the push rods of the hydraulic cylinders on both sides of the steel coil are driven to the ready position, the hydraulic cylinders on both sides are driven to advance at a low speed of 20%. During this process, the value of the pressure relays on both sides is checked in real time. When the pressure reaches 0.15MPa, the hydraulic cylinder on that side is stopped to prevent the small coil from being pushed when the tower shapes on both sides are different. After both sides stop, the proportional pressure reducing valve gives the set value of 5MPa for the clamping force. When the detected pressure does not reach 0.15MPa, the hydraulic cylinders on both sides advance slowly at a speed of 10%. When the pressure of each hydraulic cylinder reaches 0.15MPa after advancing 200mm.

[0008] (21) If the pressure value is not reached, the operation of both hydraulic cylinders will stop and an alarm will be triggered.

[0009] (22) When the pressure value is reached, control both cylinders to stop, give the pressure reduction ratio threshold setting pressure of 5MPa, and proceed to the next step;

[0010] (3) Both hydraulic cylinders advance simultaneously to begin aligning the core of the steel coil. During this process, the difference between the pressure relays on both sides is compared (to prevent the steel coil from being pushed). If the pressure difference between the two sides is greater than 0.15MPa, the high-pressure side stops and the low-pressure side continues to advance until the pressure difference is not greater than 0.15MPa. Both hydraulic cylinders continue to advance until the pressure relays reach the alignment setting value, at which point the alignment action ends.

[0011] If the stroke exceeds 80mm and the pressure has not reached 5MPa, the movement of both cylinders will stop and an alarm will be triggered.

[0012] (4) Both hydraulic cylinders return to their initial positions at high speed;

[0013] (5) The proportional pressure reducing valve setting value returns to the initial value, and the process ends.

[0014] As a preferred technical solution of the present invention, L2 is a process control system, which includes two parts: process control of the entire steel coil production line and basic automation of individual equipment. Its main function is to perform process control of each process according to the production orders issued by the MES system, set specific action parameters of various equipment, perform various model calculations and control calculations, and collect actual performance data during the execution process and upload it to the MES and ERP systems.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] In this invention, heavy-load side cylinders and light-load side cylinders are set on the left and right sides of the hot-rolled steel coil, respectively. The cylinders are driven to the left and right sides of the steel coil by a driving plate. The slow forward movement of the cylinders is controlled by detecting the pressure difference between the two sides of the pressure relay, so as to align and repair the tower shape of the steel coil formed by docking, so that the tower shape of the steel coil meets the user's requirements. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the steps of the present invention. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. In the accompanying drawings, all the same reference numerals refer to the same parts.

[0021] Example 1

[0022] like Figure 1-2 This invention provides a control method for a hot-rolled steel coil inner ring tower-shaped defect repair device. The device is driven by a heavy-load side cylinder and a light-load side cylinder via a pipeline hydraulic system to align and repair the steel coil tower shape formed by the butt joint. The alignment action control process is as follows:

[0023] (1) Based on the roll width information of L2, drive the heavy-load side cylinder and the light-load side cylinder to move at high speed. The push rod and the plate are used to align the steel roll. The two cylinders reach the ready position and stop 150mm away from the steel roll.

[0024] (2) After the push rods of the hydraulic cylinders on both sides of the steel coil are driven to the ready position, the hydraulic cylinders on both sides are driven to advance at a low speed of 20%. During this process, the value of the pressure relays on both sides is checked in real time. When the pressure reaches 0.15MPa, the hydraulic cylinder on that side is stopped to prevent the small coil from being pushed when the tower shapes on both sides are different. After both sides stop, the proportional pressure reducing valve gives a setting value of 5MPa for the clamping force. When the detected pressure does not reach 0.15MPa, the hydraulic cylinders on both sides advance slowly at a speed of 10%. After advancing 200mm, the detected pressure of each hydraulic cylinder reaches 0.15MPa.

[0025] (21) If the pressure value is not reached, the operation of both hydraulic cylinders will stop and an alarm will be triggered.

[0026] (22) When the pressure value is reached, control both cylinders to stop, give the pressure reduction ratio threshold setting pressure of 5MPa, and proceed to the next step;

[0027] (3) Both hydraulic cylinders advance simultaneously to begin aligning the core of the steel coil. During this process, the difference between the pressure relays on both sides is compared (to prevent the steel coil from being pushed). If the pressure difference between the two sides is greater than 0.15MPa, the high-pressure side stops and the low-pressure side continues to advance until the pressure difference is not greater than 0.15MPa. Both hydraulic cylinders continue to advance until the pressure relays reach the alignment setting value, at which point the alignment action ends.

[0028] If the stroke exceeds 80mm and the pressure has not reached 5MPa, the movement of both cylinders will stop and an alarm will be triggered.

[0029] (4) Both hydraulic cylinders return to their initial positions at high speed;

[0030] (5) The proportional pressure reducing valve setting value returns to the initial value, and the process ends.

[0031] In this invention, heavy-load side cylinders and light-load side cylinders are set on the left and right sides of the hot-rolled steel coil, respectively. The cylinders are driven to the left and right sides of the steel coil by a driving plate. The slow forward movement of the cylinders is controlled by detecting the pressure difference between the two sides of the pressure relay, so as to align and repair the tower shape of the steel coil formed by docking, so that the tower shape of the steel coil meets the user's requirements.

[0032] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A control method for a hot-rolled steel coil inner ring tower-shaped defect repair instrument, characterized in that, The heavy-load and light-load side cylinders are driven by a pipeline hydraulic system to align and repair the steel coil tower shape formed by the docking. The alignment action control process is as follows: (1) Based on the roll width information of L2, drive the heavy-load side cylinder and the light-load side cylinder to move at high speed. The push rod will align the steel rolls through the clapper. The two cylinders will reach the ready position and stop 150mm away from the steel roll. (2) After the push rods of the hydraulic cylinders on both sides of the steel coil are driven to the ready position, the hydraulic cylinders on both sides are driven to advance at a low speed of 20%. During this process, the value of the pressure relays on both sides is checked in real time. When the pressure reaches 0.15MPa, the hydraulic cylinder on that side is stopped to prevent the small coil from being pushed when the tower shapes on both sides are different. After both sides stop, the proportional pressure reducing valve gives the set value of 5MPa for the clamping force. When the detected pressure does not reach 0.15MPa, the hydraulic cylinders on both sides advance slowly at a speed of 10%. When the pressure of each hydraulic cylinder reaches 0.15MPa after advancing 200mm, the pressure of each hydraulic cylinder reaches 0.15MPa. (21) If the pressure value is not reached, the operation of both hydraulic cylinders will stop and an alarm will be triggered; (22) When the pressure value is reached, control both cylinders to stop, give the pressure reduction ratio threshold setting pressure of 5MPa, and proceed to the next step; (3) Both hydraulic cylinders advance simultaneously to begin aligning the core of the steel coil. During this process, the difference between the pressure relays on both sides is compared to prevent the steel coil from being pushed. If the pressure difference between the two sides is greater than 0.15MPa, the high-pressure side stops and the low-pressure side continues to advance until the pressure difference is not greater than 0.15MPa. Both hydraulic cylinders continue to advance until the pressure relays reach the alignment setting value, at which point the alignment action ends. If the stroke exceeds 80mm and the pressure has not reached 5MPa, the movement of both cylinders will stop and an alarm will be triggered. (4) Both hydraulic cylinders return to their initial positions at high speed; (5) The proportional pressure reducing valve setpoint returns to the initial value, and the process ends; L2 is a process control system, which includes two parts: process control of the entire steel coil production line and basic automation of individual equipment. Its main function is to control the process of each process according to the production orders issued by the MES system, set the specific action parameters of various equipment, perform various model calculations and control calculations, and collect the actual performance data during the execution process and upload it to the MES and ERP systems.

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