Rolling mill precision management system

Abstract

The invention provides a rolling mill precision management system, which comprises a measurement item information management module used for managing a production line, an area and equipment to which measurement items belong and a plurality of precision indexes associated with the measurement items, the measurement items comprising window type measurement items in a rolling mill and channel type measurement items in a rolling line; the precision standard management module is used for managing the upper limit value and the lower limit value of each precision index; the measurement data management module is used for managing a plurality of measurement values of each precision index; and the precision evaluation module is used for comparing the plurality of measurement values, the upper limit value and the lower limit value of each precision index to obtain an evaluation result of each precision index. Through the arrangement of the rolling mill precision management system, the comprehensive coverage, efficient processing and trend tracking of all measurement items can be realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel production, and particularly relates to a rolling mill precision management system. BACKGROUND

[0002] In a hot rolling production line, the size exceeding the standard caused by the installation or wear of the rolling line equipment directly affects the stability of the steel rolling, and the deterioration of the rolling mill precision causes the rolling piece blocking, abnormal deformation and other problems; the number of channel type precision measurement projects is huge and the standards are different, and manual management is difficult to cover all control points and track the wear trend, and the rolling mill window type measurement needs to collect a large amount of data (such as 180 measuring points of 7 finishing mills), and the efficiency of manual management is low, and it is difficult to realize the comprehensive coverage, efficient processing and trend tracking of all measurement projects. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a rolling mill precision management system for solving the above-mentioned problems.

[0004] The rolling mill precision management system provided by the present application comprises:

[0005] A measurement project information management module is used for managing the production line, area and equipment to which the measurement project belongs and a plurality of precision indexes associated with the measurement project, the measurement project comprising a window type measurement project in a rolling mill and a channel type measurement project in a rolling line;

[0006] A precision standard management module is used for managing the upper limit value and the lower limit value of each precision index;

[0007] A measurement data management module is used for managing a plurality of measurement values of each precision index;

[0008] A precision evaluation module is used for comparing the plurality of measurement values, the upper limit value and the lower limit value of each precision index to obtain an evaluation result of each precision index.

[0009] In an embodiment of the present application, the measurement data management module is further used for generating an average measurement value according to the plurality of measurement values of each precision index.

[0010] In an embodiment of the present application, the precision evaluation module is specifically used for comparing the average measurement value, the upper limit value and the lower limit value of each precision index to obtain the evaluation result of each precision index.

[0011] In an embodiment of the present application, the measurement data management module is further used for managing the gasket number of the inlet and outlet of each rolling mill, the compensation thickness of the inlet and outlet, the deviation of the upper operating side and the upper driving side and the deviation of the lower operating side and the lower driving side.

[0012] In an embodiment of the present application, the precision evaluation module is further configured to:

[0013] determine a gasket deduction for each of the rolling mills according to the gasket numbers at the inlet and outlet of each of the rolling mills;

[0014] determine a compensation thickness deduction for each of the rolling mills according to the compensation thicknesses at the inlet and outlet of each of the rolling mills;

[0015] determine a deviation deduction for each of the rolling mills according to the deviations between the upper operating side and the upper driving side and between the lower operating side and the lower driving side of each of the rolling mills;

[0016] determine a uniformity deduction for each of the rolling mills according to the multiple measurement values and the corresponding average measurement values of each of the precision indexes in each of the rolling mills;

[0017] determine a comprehensive precision score of each of the rolling mills in the selected period based on the gasket deduction, the compensation thickness deduction, the deviation deduction and the uniformity deduction of each of the rolling mills in the selected period.

[0018] In an embodiment of the present application, the system further comprises:

[0019] a measurement time reminding module configured to generate a time length to the next measurement of each of the precision indexes according to the last measurement time and the measurement period of each of the precision indexes.

[0020] In an embodiment of the present application, the measurement time reminding module is further configured to alarm if the time length to the next measurement of any of the precision indexes is less than a preset threshold.

[0021] In an embodiment of the present application, the system further comprises:

[0022] a trend correction module configured to correct the measurement period and the processing plan according to the measurement value change trend of each of the precision indexes.

[0023] In an embodiment of the present application, the precision standard management module is further configured to manage the standard values of each of the precision indexes.

[0024] The technical solution has the following beneficial effects: the measurement item information management module is configured to uniformly manage the information of the window type measurement items and the channel type measurement items, the precision standard management module is configured to uniformly manage the upper limit values and the lower limit values of each of the precision indexes, the measurement data management module is configured to uniformly manage the multiple measurement values of each of the precision indexes, and the precision evaluation module is configured to automatically generate the evaluation results of each of the precision indexes. It can be seen that the rolling mill precision management system is configured to comprehensively cover, efficiently process and track the trends of all the measurement items.

[0025] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application. It is

[0027] In the drawings:

[0028] Figure 1 is a structural diagram of a rolling mill precision management system according to an exemplary embodiment of the present application.

[0029] Figure 2 is a measurement item data management diagram of a rolling mill window according to an exemplary embodiment of the present application.

[0030] Figure 3 is a measurement item data management diagram of a rolling mill passage according to an exemplary embodiment of the present application.

[0031] Figure 4 is a measurement item data management diagram of a rolling mill passage according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0032] While the application has been shown and described with reference to certain specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should be determined not by the embodiments disclosed herein, but by the broadest language of the appended claims and their equivalents, and the foregoing description is

[0033] It is to be understood that the drawings are to be used only as a illustrative purpose and that they do not represent according to the number, shape and size of components in actual implementation, and the type, number and proportion of components in actual implementation can be changed arbitrarily, and the layout type of components can be more complex.

[0034] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring the embodiments of the present invention.

[0035] For ease of understanding, the relevant contents of the present invention are first described below.

[0036] Rolling mill precision is the basis for ensuring efficient and stable production. Wear of rolling line equipment or excessive precision will cause the rolled piece to become stuck, affecting the deformation of the rolling mill and causing the rolled piece's external dimensions to exceed the standard, thereby affecting the passability of the rolled piece and causing abnormal deformation of the rolled piece, which will directly affect the rolling efficiency and product quality.

[0037] There are many channel-type precision control points, and the measurement methods, cycles and standards are different. Through manual management, it is difficult to accurately track each point, cover the wear conditions of all control points, and achieve accuracy recovery before exceeding the standard.

[0038] Mill window accuracy requires periodic measurement of mill window dimensions and adjustments based on the measured data. Because multiple mill stands are involved, the amount of window data required is large, and multiple measurements are required for each plane. This makes it difficult to accurately track the dimensions of each window and the changing trends in precision dimensions.

[0039] It can be seen that there are many rolling mills in the existing hot coil production line, and there are many precision points (i.e. measurement items, i.e. control points) that need to be controlled. Usually, a few key points are selected for control. It is impossible to fully cover all control points. The most common hot rolling mill group includes 2 roughing mills and 7 finishing mills. Each stand needs to measure the upper and lower working sides, and the upper and lower transmission sides, a total of 4 surfaces, and each surface needs to measure 5 points, a total of 180 data need to be recorded; the original manual data processing is labor-intensive and inefficient;

[0040] See also Figure 1 , Figure 1 FIG. 1 is a structural diagram of a rolling mill precision management system according to an exemplary embodiment of the present invention. Figure 1 As shown, in an exemplary embodiment, the rolling mill precision management system includes:

[0041] The measurement item information management module 110 is used to manage the production line, area, and equipment (e.g., rolling mill number, F1) to which the measurement items belong, as well as multiple accuracy indicators associated with the measurement items. The measurement items include window-type measurement items in the rolling mill and channel-type measurement items in the rolling line.

[0042] The precision standard management module 120 is used to manage the upper limit and lower limit of each precision indicator;

[0043] The measurement data management module 130 is used to manage the multiple measurement values ​​of each of the accuracy indicators;

[0044] The accuracy evaluation module 140 is configured to compare the multiple measurement values, upper limit values, and lower limit values ​​of each of the accuracy indicators to obtain an evaluation result of each of the accuracy indicators.

[0045] The rolling mill precision management system in the embodiment of the present invention can record the measurement data and evaluation results of each cycle, so the multiple measurement values ​​of each precision indicator mentioned above can be multiple measurement values ​​of each precision indicator in each measurement cycle. The number of the above measurement values ​​can be defined, for example, five.

[0046] In some embodiments, as Figures 2 to 4 As shown, the accuracy standard management module 120 is also used to manage the standard value of each accuracy indicator.

[0047] The present invention, by providing a measurement item information management module 110, can centrally manage information on window-type measurement items and channel-type measurement items. The accuracy standard management module 120 can centrally manage the upper and lower limits of each accuracy indicator. The measurement data management module 130 can centrally manage multiple measurement values ​​for each accuracy indicator. The accuracy evaluation module 140 can automatically generate evaluation results for each accuracy indicator. Thus, the present invention, by providing a rolling mill accuracy management system, facilitates comprehensive coverage, efficient processing, and trend tracking of all measurement items.

[0048] In one embodiment of the present invention, the measurement data management module 130 is further configured to generate an average measurement value according to multiple measurement values ​​of each accuracy indicator.

[0049] In one embodiment of the present invention, the accuracy evaluation module 140 is specifically configured to compare the average measurement value, the upper limit value, and the lower limit value of each of the accuracy indicators to obtain an evaluation result of each of the accuracy indicators.

[0050] like Figure 4 As shown, if the average value exceeds the limit, it can be directly determined as unqualified.

[0051] In one embodiment of the present invention, the measurement data management module 130 is also used to manage the number of gaskets at the entrance and exit of each rolling mill, the compensation thickness of the entrance and exit, the deviation between the upper operating side and the upper transmission side, and the deviation between the lower operating side and the lower transmission side.

[0052] The measurement data management module 130 of the embodiment of the present application can record the measurement time while recording the above data.

[0053] In an embodiment of the present application, the precision evaluation module 140 is further configured to:

[0054] determine a gasket deduction for each rolling mill according to the number of gaskets at the inlet and outlet of each rolling mill;

[0055] determine a compensation thickness deduction for each rolling mill according to the compensation thickness at the inlet and outlet of each rolling mill;

[0056] determine a deviation deduction for each rolling mill according to the deviation between the upper operating side and the upper driving side and the deviation between the lower operating side and the lower driving side of each rolling mill;

[0057] determine a uniformity deduction for each rolling mill according to the multiple measurement values of each precision index and the corresponding average measurement value in each rolling mill;

[0058] determine a comprehensive precision score of each rolling mill in the selected period based on the gasket deduction, the compensation thickness deduction, the deviation deduction and the uniformity deduction of each rolling mill in the selected period.

[0059] The following provides a specific example to illustrate how to determine the comprehensive precision score.

[0060] a. Gasket deduction: increase 1 gasket block (inlet + outlet), deduct 1 point. If one side increases n blocks more than the other side, deduct n points in addition.

[0061] b. Compensation thickness deduction: increase 1 mm of compensation thickness (inlet + outlet), deduct 1 point, and less than 1 mm is calculated as 1 point.

[0062] c. Deviation deduction: deviation from the operating side to the driving side ≥0.5 mm, deduct 2 points, and the upper and lower deductions are added together.

[0063] d. Uniformity deduction: any one measurement value of the same precision index - average measurement value ≥0.5 mm, deduct 1 point.

[0064] e. Rolling mill score: one rolling mill full score is 100 points, and the actual score = 100 - sum of deductions.

[0065] f. Data query: the corresponding deduction can be queried according to the time period, and the comprehensive precision score of the rolling mill is automatically generated.

[0066] In an embodiment of the present application, the system further comprises:

[0067] The measurement time reminder module 150 is configured to generate the time until the next measurement of each accuracy indicator according to the last measurement time and measurement period of each accuracy indicator.

[0068] like Figure 4 As shown, the last measurement time (ie, measurement date) and the time until the next measurement (days) can be automatically recorded.

[0069] In one embodiment of the present invention, the measurement time reminder module 150 is further configured to generate an alarm when the time from any of the accuracy indicators to the next measurement is less than a preset threshold.

[0070] In one embodiment of the present invention, the system further includes:

[0071] The trend correction module 160 is used to correct the measurement cycle and processing plan according to the change trend of the measurement value of each accuracy indicator.

[0072] The present invention can achieve full coverage of all precision control points of the rolling line, ensure that all control points are measured and evaluated within the cycle range, provide technical management personnel with dimensional change trends, and formulate reasonable precision maintenance plans; through the precision quantitative evaluation of the rolling mill, the state of the rolling mill can be effectively grasped, basically eliminating the stability of the rolling mill. The transformation of steel piling has been realized from tracking equipment status to all-weather rolling of difficult-to-roll products.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A rolling mill precision management system, characterized in that: include: Measurement project information management module: used to manage the production lines, areas, and equipment to which the measurement projects belong, as well as multiple accuracy indicators associated with the measurement projects. The measurement projects include window-type measurement projects in rolling mills and channel-type measurement projects in rolling lines. Precision standard management module: used to manage the upper limit and lower limit of each precision indicator; Measurement data management module: used for managing multiple measurement values ​​of each of the accuracy indicators; The accuracy evaluation module is used to compare the multiple measurement values, upper limit values ​​and lower limit values ​​of each of the accuracy indicators to obtain the evaluation results of each of the accuracy indicators.

2. The rolling mill precision management system according to claim 1, characterized in that: The measurement data management module is further configured to generate an average measurement value based on multiple measurement values ​​of each of the accuracy indicators.

3. The rolling mill precision management system according to claim 2, characterized in that: The accuracy evaluation module is specifically used to compare the average measurement value, the upper limit value and the lower limit value of each accuracy indicator to obtain an evaluation result of each accuracy indicator.

4. The rolling mill precision management system according to any one of claims 1 to 3, characterized in that: The measurement data management module is also used to manage the number of gaskets at the entrance and exit of each rolling mill, the compensation thickness of the entrance and exit, the deviation between the upper operating side and the upper transmission side, and the deviation between the lower operating side and the lower transmission side.

5. The rolling mill precision management system according to claim 4, characterized in that: The accuracy evaluation module is also used to: Determining the shim deduction points for each rolling mill according to the number of shims at the inlet and outlet of each rolling mill; Determining the compensation thickness deduction points for each rolling mill according to the compensation thickness at the inlet and outlet of each rolling mill; Determining the deviation deduction points for each rolling mill according to the deviation between the upper operating side and the upper transmission side and the deviation between the lower operating side and the lower transmission side of each rolling mill; Determining a uniformity deduction for each rolling mill based on a plurality of measured values ​​of each precision indicator in each rolling mill and a corresponding average measured value; Based on the shim deduction points, the compensation thickness deduction points, the deviation deduction points and the uniformity deduction points of each rolling mill in the selected time period, a comprehensive accuracy score of each rolling mill in the selected time period is determined.

6. The rolling mill precision management system according to claim 1, characterized in that: The system further comprises: The measurement time reminder module is used to generate the time from the last measurement of each precision indicator to the next measurement according to the last measurement time and measurement cycle of each precision indicator.

7. The rolling mill precision management system according to claim 6, characterized in that: The measurement time reminder module is further configured to issue an alarm when the time between any of the accuracy indicators and the next measurement is less than a preset threshold.

8. The rolling mill precision management system according to claim 1, characterized in that: The system further comprises: The trend correction module is used to correct the measurement cycle and processing plan according to the change trend of the measurement value of each accuracy indicator.

9. The rolling mill precision management system according to claim 1, characterized in that: The accuracy standard management module is also used to manage the standard value of each accuracy indicator.

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