阅读说明：本技术 带钢热连轧精轧机组的精轧质量控制方法 (Finish rolling quality control method for strip steel hot continuous rolling finishing mill group ) 是由 张世厚 闫峥嵘 宗子期 华江红 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种带钢热连轧精轧机组的精轧质量控制方法。该方法包括：利用精轧机组出口设置的两个厚度检测设备、两个宽度检测设备和两个温度检测设备,以对带钢的厚度、宽度和温度进行实时检测；利用计算控制模块获取厚度偏差值、宽度偏差值和温度偏差值的绝对值；根据带钢质量要求设定厚度偏差范围、宽度偏差范围和温度偏差范围；将计算控制模块与显示模块连接,利用计算控制模块分别对厚度偏差值和厚度偏差范围、宽度偏差值和宽度偏差范围、温度偏差值和温度偏差范围进行实时比较,并根据比较结果进行显示报警。本发明的方法能够消除了因检测设备的检测值出现异常或者检测设备本身产生异常波动而导致大量带钢轧制成品出现质量不佳的问题。(The invention discloses a finish rolling quality control method for a strip steel hot continuous rolling finishing mill group. The method comprises the following steps: two thickness detection devices, two width detection devices and two temperature detection devices are arranged at the outlet of the finishing mill group to detect the thickness, the width and the temperature of the strip steel in real time; acquiring absolute values of the thickness deviation value, the width deviation value and the temperature deviation value by using a calculation control module; setting a thickness deviation range, a width deviation range and a temperature deviation range according to the quality requirement of the strip steel; and the calculation control module is connected with the display module, and is used for comparing the thickness deviation value and the thickness deviation range, the width deviation value and the width deviation range, and the temperature deviation value and the temperature deviation range in real time respectively, and displaying and alarming according to the comparison result. The method can solve the problem of poor quality of a large number of strip steel rolled finished products caused by abnormal detection values of detection equipment or abnormal fluctuation of the detection equipment.)

1. A finish rolling quality control method of a hot continuous rolling finish rolling unit for strip steel is characterized by comprising the following steps:

two thickness detection devices, two width detection devices and two temperature detection devices are arranged at the outlet of the finishing mill group to detect the thickness, the width and the temperature of the strip steel in real time;

respectively comparing two thickness detection values, two width detection values and two temperature detection values in real time by using a calculation control module to obtain a thickness deviation value, a width deviation value and a temperature deviation value, wherein the thickness deviation value, the width deviation value and the temperature deviation value are absolute values;

setting a thickness deviation range, a width deviation range and a temperature deviation range according to the quality requirement of the strip steel;

and connecting the calculation control module with a display module, comparing the thickness deviation value and the thickness deviation range, the width deviation and the width deviation range, and the temperature deviation value and the temperature deviation range in real time by using the calculation control module, and displaying and alarming according to a comparison result.

2. The finish rolling quality control method of the hot continuous strip rolling finishing mill unit according to claim 1, wherein the displaying and alarming according to the comparison result includes:

and displaying the thickness detection value, the width detection value and the temperature detection value on a display interface of the display module in different display modes according to the comparison result, and starting an alarm according to the comparison result.

3. The finish rolling quality control method for the hot continuous rolling finishing mill group for strip steel according to claim 2, wherein the displaying the thickness detection value, the width detection value and the temperature detection value on the display interface of the display module in different display modes according to the comparison result and the starting of an alarm according to the comparison result comprises:

when the thickness deviation value is smaller than the lower limit value of the thickness deviation range, displaying the thickness detection value by adopting a first set color; when the thickness deviation value belongs to the thickness deviation range, displaying the thickness detection value by adopting a second set color, and starting an alarm; when the thickness deviation value is larger than the upper limit value of the thickness deviation range, displaying the thickness detection value by adopting a third set color, and starting an alarm;

when the width deviation value is smaller than the lower limit value of the width deviation range, displaying the width detection value by adopting the first set color; when the width deviation value belongs to the width deviation range, displaying the width detection value by adopting the second set color, and starting an alarm; when the width deviation value is larger than the upper limit value of the width deviation range, displaying the width detection value by adopting the third set color, and starting an alarm;

when the temperature deviation value is smaller than the lower limit value of the temperature deviation range, displaying the temperature detection value by adopting the first set color; when the temperature deviation value belongs to the temperature deviation range, displaying the temperature detection value by adopting the second set color, and starting an alarm; and when the temperature deviation value is larger than the upper limit value of the temperature deviation range, displaying the temperature detection value by adopting the third set color, and starting an alarm.

4. The finish rolling quality control method of the hot continuous strip rolling finishing mill unit according to claim 1, wherein the calculation control module connects the thickness detection device, the width detection device, and the temperature detection device in a point-to-point communication manner.

5. The finish rolling quality control method for the hot continuous strip rolling finishing mill unit according to claim 1, wherein the calculation control module is connected to the display module in a network communication manner.

6. The finish rolling quality control method of the hot strip mill train according to claim 1, wherein the two thickness detection devices are a crown gauge and/or a thickness gauge.

7. The finish rolling quality control method of the hot strip mill train according to claim 1, wherein the two width detection devices are a flatness meter and/or a width meter.

8. The finish rolling quality control method of the hot continuous strip rolling finishing mill unit according to claim 1, wherein both of the two temperature detection devices are thermometers.

9. The finish rolling quality control method of the hot continuous strip rolling finishing mill unit according to claim 1, wherein the calculation control module is a process and transmission controller.

10. The finish rolling quality control method of the hot continuous strip rolling finishing mill unit according to claim 1, wherein the display module is a display.

Technical Field

The invention relates to the technical field of automatic control of hot continuous rolling equipment, in particular to a finish rolling quality control method of a strip steel hot continuous rolling finishing mill group.

Background

The finishing mill group is a finished product mill group and is a core part of hot continuous rolling strip steel production, and the quality of strip steel rolling products mainly depends on the technical equipment level and the control level of the finishing mill group. Generally, in order to ensure the quality of a rolled finished strip, different detection devices are provided at the outlet of a finishing mill group in a finishing rolling process to monitor the thickness of the strip, the width of the strip and the temperature of the strip in real time. The existing detection equipment only starts alarming when the equipment fails, and the detection equipment does not start alarming when the detection value of the detection equipment is abnormal or the detection equipment generates abnormal fluctuation; at the moment, if field workers cannot find out abnormal detection problems in time, quality problems of a large number of strip steel rolled finished products can be caused.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides a finish rolling quality control method for a hot continuous rolling finishing mill group of strip steel, which can display the detection value of detection equipment in real time and give an alarm in time when the detection value of the detection equipment is abnormal or the detection equipment generates abnormal fluctuation.

Therefore, the invention discloses a finish rolling quality control method of a hot continuous rolling finishing mill group for strip steel, which comprises the following steps:

two thickness detection devices, two width detection devices and two temperature detection devices are arranged at the outlet of the finishing mill group to detect the thickness, the width and the temperature of the strip steel in real time;

respectively comparing two thickness detection values, two width detection values and two temperature detection values in real time by using a calculation control module to obtain a thickness deviation value, a width deviation value and a temperature deviation value, wherein the thickness deviation value, the width deviation value and the temperature deviation value are absolute values;

setting a thickness deviation range, a width deviation range and a temperature deviation range according to the quality requirement of the strip steel;

and connecting the calculation control module with a display module, comparing the thickness deviation value and the thickness deviation range, the width deviation value and the width deviation range, and the temperature deviation value and the temperature deviation range in real time by using the calculation control module, and displaying and alarming according to a comparison result.

Further, in the finish rolling quality control method of the hot continuous rolling finishing mill group for strip steel, the displaying and alarming according to the comparison result includes:

and displaying the thickness detection value, the width detection value and the temperature detection value on a display interface of the display module in different display modes according to the comparison result, and starting an alarm according to the comparison result.

Further, in the method for controlling the finish rolling quality of the hot continuous rolling finishing mill group for strip steel, the displaying the thickness detection value, the width detection value and the temperature detection value on the display interface of the display module by adopting different display modes according to the comparison result, and starting an alarm according to the comparison result includes:

when the thickness deviation value is smaller than the lower limit value of the thickness deviation range, displaying the thickness detection value by adopting a first set color; when the thickness deviation value belongs to the thickness deviation range, displaying the thickness detection value by adopting a second set color, and starting an alarm; when the thickness deviation value is larger than the upper limit value of the thickness deviation range, displaying the thickness detection value by adopting a third set color, and starting an alarm;

when the width deviation value is smaller than the lower limit value of the width deviation range, displaying the width detection value by adopting the first set color; when the width deviation value belongs to the width deviation range, displaying the width detection value by adopting the second set color, and starting an alarm; when the width deviation value is larger than the upper limit value of the width deviation range, displaying the width detection value by adopting the third set color, and starting an alarm;

when the temperature deviation value is smaller than the lower limit value of the temperature deviation range, displaying the temperature detection value by adopting the first set color; when the temperature deviation value belongs to the temperature deviation range, displaying the temperature detection value by adopting the second set color, and starting an alarm; and when the temperature deviation value is larger than the upper limit value of the temperature deviation range, displaying the temperature detection value by adopting the third set color, and starting an alarm.

Further, in the finish rolling quality control method of the strip steel hot continuous rolling finishing mill group, the calculation control module is connected with the thickness detection device, the width detection device and the temperature detection device in a point-to-point communication mode.

Further, in the finish rolling quality control method of the strip steel hot continuous rolling finishing mill group, the calculation control module is connected with the display module in a network communication mode.

Further, in the finish rolling quality control method of the hot continuous rolling finishing mill group for strip steel, the two thickness detection devices are a crown gauge and/or a thickness gauge.

Further, in the finish rolling quality control method of the strip hot continuous rolling finishing mill group, the two width detection devices are a flatness meter and/or a width meter.

Further, in the finish rolling quality control method of the hot continuous rolling finishing mill group for strip steel, the two temperature detection devices are both temperature measuring instruments.

Further, in the finish rolling quality control method of the strip steel hot continuous rolling finishing mill group, the calculation control module is a process and transmission controller.

Further, in the finish rolling quality control method of the strip steel hot continuous rolling finishing mill group, the display module is a display.

The technical scheme of the invention has the following main advantages:

according to the finish rolling quality control method of the strip steel hot continuous rolling finishing mill unit, the plurality of detection devices, the calculation control module and the display module are utilized, the parameters of the strip steel finished product can be displayed in real time, whether the detection abnormity problem exists or not can be judged according to the detection result, real-time alarm can be performed, the problem that the quality of a large number of strip steel rolled finished products is poor due to abnormity of the detection value of the detection device or abnormal fluctuation of the detection device is effectively solved, and the qualification rate of the strip steel products is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a flowchart of a finish rolling quality control method of a hot strip rolling finishing mill group according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present invention provides a finish rolling quality control method for a hot continuous rolling finishing mill group for strip steel, where the finish rolling quality control method includes the following steps:

two thickness detection devices, two width detection devices and two temperature detection devices are arranged at the outlet of the finishing mill group to detect the thickness, the width and the temperature of the strip steel in real time;

the two thickness detection values, the two width detection values and the two temperature detection values are respectively compared in real time by utilizing a calculation control module to obtain a thickness deviation value, a width deviation value and a temperature deviation value, and the thickness deviation value, the width deviation value and the temperature deviation value are absolute values;

setting a thickness deviation range, a width deviation range and a temperature deviation range according to the quality requirement of the strip steel;

and the calculation control module is connected with the display module, and is used for comparing the thickness deviation value and the thickness deviation range, the width deviation value and the width deviation range, and the temperature deviation value and the temperature deviation range in real time respectively, and displaying and alarming according to the comparison result.

The finish rolling quality control method provided by the embodiment of the invention is used for solving the problem of poor quality of a large number of strip steel rolled finished products caused by abnormal detection values of detection equipment or abnormal fluctuation of the detection equipment, and preferably, two thickness detection equipment detect the thickness of the strip steel at the same position in order to avoid thickness difference existing at different positions of the strip steel; similarly, the two width detection devices detect the width of the same position of the strip steel, and the two temperature detection devices detect the temperature of the same position of the strip steel.

Further, in the embodiment of the present invention, the displaying and alarming according to the comparison result includes: and displaying the thickness detection value, the width detection value and the temperature detection value on a display interface of a display module in different display modes according to the comparison result, and starting an alarm according to the comparison result.

Further, in the embodiment of the present invention, the displaying the thickness detection value, the width detection value, and the temperature detection value on the display interface of the display module in different display manners according to the comparison result, and starting an alarm according to the comparison result includes:

when the thickness deviation value is smaller than the lower limit value of the thickness deviation range, displaying the thickness detection value by adopting a first set color; when the thickness deviation value belongs to the thickness deviation range, displaying the thickness detection value by adopting a second set color, and starting an alarm; when the thickness deviation value is larger than the upper limit value of the thickness deviation range, displaying the thickness detection value by adopting a third set color, and starting an alarm;

when the width deviation value is smaller than the lower limit value of the width deviation range, displaying the width detection value by adopting a first set color; when the width deviation value belongs to the width deviation range, displaying the width detection value by adopting a second set color, and starting an alarm; when the width deviation value is larger than the upper limit value of the width deviation range, displaying the width detection value by adopting a third set color, and starting an alarm;

when the temperature deviation value is smaller than the lower limit value of the temperature deviation range, displaying the temperature detection value by adopting a first set color; when the temperature deviation value belongs to the temperature deviation range, displaying the temperature detection value by adopting a second set color, and starting an alarm; and when the temperature deviation value is larger than the upper limit value of the temperature deviation range, displaying the temperature detection value by adopting a third set color, and starting an alarm.

Wherein, the alarm function can be realized by the calculation control module;

the first set color, the second set color and the third set color can be specifically selected according to actual conditions; for example, the first setting color may be black, the second setting color may be yellow, and the third setting color may be red.

Furthermore, in the embodiment of the present invention, the calculation control module may be connected to the thickness detection device, the width detection device, and the temperature detection device in a point-to-point communication manner, and the calculation control module may be connected to the display module in a network communication manner; so set up, can be convenient for calculation control module to receive and transmit data.

Preferably, one of the two thickness detection devices is a convexity meter, and the other is a thickness meter; of course, both the two can be convexity meters or thickness meters, as long as the real-time detection of the thickness of the strip steel can be realized.

Preferably, one of the two width detection devices is a flatness meter and the other is a width meter; of course, both the two can be a flatness meter or a width meter, as long as the real-time detection of the width of the strip steel can be realized.

Preferably, both temperature detection devices are thermometers.

Preferably, the calculation control module may be a process and drive controller (TDC).

Preferably, the display module is a display.

In order to make the technical solutions of the present invention more clear, the following will clearly and completely describe the technical solutions of the present invention with reference to the specific embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments.

Example 1

Suppose that: the target thickness of a rolled stainless steel strip finished product is 3.0mm, the target width is 1250mm, the finish rolling outlet temperature is 900 ℃, the thickness deviation range is 50-100 um, the width deviation range is 3-5 mm, and the temperature deviation range is 3-5 ℃;

when the thickness deviation value of the TDC, which is obtained based on the thickness detection values detected by the convexity meter and the thickness gauge, is less than 50um, the thickness detection value is displayed on a display interface of the display in black; when the thickness deviation value is within the range of 50-100 um, the thickness detection value is displayed on a display interface of a display in yellow, and the TDC starts alarming; when the thickness deviation value is larger than 100um, the thickness detection value is displayed on a display interface of the display in red, and the TDC starts to alarm;

when the TDC is less than 3mm in width deviation value obtained based on the width detection values detected by the flatness meter and the width gauge, the width detection value is displayed on a display interface of the display in black; when the width deviation value is within the range of 3-5 mm, displaying the width detection value on a display interface of a display in yellow, and starting an alarm by a TDC; when the width deviation value is larger than 5mm, the width detection value is displayed on a display interface of the display in red, and the TDC starts to alarm;

when the temperature deviation value of the TDC, which is obtained based on the thickness detection values detected by the two thermometers, is less than 3 ℃, the temperature detection value is displayed on a display interface of the display in black; when the temperature deviation value is within the range of 3-5 ℃, the temperature detection value is displayed on a display interface of a display in yellow, and the TDC starts to alarm; when the temperature deviation value is more than 5 ℃, the temperature detection value is displayed on a display interface of the display in red, and the TDC starts to alarm.

The display interface of the display can display two thickness detection values, two width detection values and two temperature detection values; of course, only one of the two thickness detection values, one of the two width detection values, and one of the two temperature detection values may be displayed; preferably, in order to facilitate data viewing, in the embodiment of the present invention, only one thickness detection value, one width detection value, and one temperature detection value are displayed on a display interface of the display.

Therefore, the finish rolling quality control method of the strip steel hot continuous rolling finishing mill unit provided by the embodiment of the invention can display the parameters of the finished strip steel product in real time by utilizing the plurality of detection devices, the calculation control module and the display module, can judge whether the detection abnormity problem exists according to the detection result, and can give an alarm in real time, thereby effectively eliminating the problem of poor quality of a large number of strip steel rolled products caused by abnormity of the detection values of the detection devices or abnormal fluctuation of the detection devices, and ensuring the qualification rate of the strip steel products.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.