A wear-resistant steel plate impact test evaluation processing method and system

Abstract

The present application discloses a wear-resistant steel plate impact test evaluation and processing method and system, the method comprising: taking a photo of the wear-resistant steel plate to obtain a first photo, wherein the first photo is a photo of the wear-resistant steel plate before the impact test; taking a second photo of the wear-resistant steel plate after the impact test; identifying cracks added in the second photo based on the first photo and the second photo; and determining the impact resistance of the wear-resistant steel plate based on the cracks and the impact test that the wear-resistant steel plate has undergone. The present application solves the problem that there is no good solution in the prior art to test whether the wear-resistant steel plate in the mill can withstand the impact of the medium, so that the impact resistance of the steel plate can be obtained more accurately, and provides data support for the use and replacement of the steel plate in the mill.

Description

Technical Field

[0001] The present application relates to the field of steel testing, and in particular to a method and system for evaluating and processing impact testing of wear-resistant steel plates. Background Art

[0002] A grinding mill is a mining equipment for grinding ores. The raw materials are fed into a hollow cylinder (with end caps at both ends) through a hollow shaft neck for grinding. The cylinder is filled with grinding media of various diameters (steel balls, steel rods or gravel, etc.). The advantages are easy operation, easy self-flow of slurry and slurry distribution. There are several ways to classify grinding mills, among which the most practical classification method is based on the different grinding media: the medium is metal balls for ball mills, the medium is steel rods for rod mills, the medium is the ore itself for autogenous mills, and the medium is ore or gravel for gravel mills.

[0003] In a grinding mill, the height to which the grinding media is lifted and the trajectory of its fall are related to the drum speed, the amount of media, and the type of liner. Generally speaking, the media motion states can be divided into three types according to the drum speed of the grinding mill from low to high:

[0004] (1) Cascading state. When the mill is running at a low speed, it produces a cascading motion state, and the material is mainly crushed and ground by the sliding of the media against each other. Rod mills and tube mills generally work in this motion state.

[0005] (2) Dropping state. When the mill is running at a higher speed, it will produce a dropping motion state. At this time, the grinding process is mainly impact, followed by grinding. The ball mill generally works in this motion state.

[0006] (3) Centrifugal state. When the cylinder speed increases to a certain limit, that is, when it reaches or exceeds the critical speed, all the media rotate with the cylinder and will not fall. This is called the centrifugal motion state of the media. In the centrifugal state, generally no grinding effect occurs. Therefore, ordinary mills work in this state.

[0007] The lining of the grinding mill is made of steel, which must be wear-resistant and able to withstand impact. In the prior art, there is no good test method for whether the steel used as the lining can withstand impact, which will increase the cost of the grinding mill and bring some risks. Summary of the invention

[0008] The embodiments of the present application provide a wear-resistant steel plate impact test evaluation processing method and system to at least solve the problem that there is no good solution in the prior art to test whether the wear-resistant steel plate in the grinding mill can withstand the impact of the medium.

[0009] According to one aspect of the present application, a method for evaluating and processing an impact test of a wear-resistant steel plate is provided, comprising: photographing the wear-resistant steel plate to obtain a first photo, wherein the first photo is a photo of the wear-resistant steel plate before the impact test; photographing the wear-resistant steel plate after the impact test to obtain a second photo; identifying cracks added in the second photo based on the first photo and the second photo; and determining the impact resistance of the wear-resistant steel plate based on the cracks and the impact test that the wear-resistant steel plate has undergone.

[0010] Furthermore, the impact test is a test in which a medium of a predetermined weight is dropped from a predetermined height to hit the wear-resistant steel plate, wherein the test in which the medium of a predetermined weight is hit to the wear-resistant steel plate reaches a predetermined number of times in one impact test.

[0011] Furthermore, the medium includes at least one of the following: a spherical ball made of metal material, a heavy object of irregular shape, wherein the heavy object of irregular shape is used to simulate stones in a grinding mill.

[0012] Furthermore, taking a photo of the wear-resistant steel plate that has undergone the impact test to obtain the second photo includes: taking a photo of the wear-resistant steel plate that has experienced a predetermined time and a predetermined number of medium impacts within the predetermined time, wherein the predetermined time is the working time of the grinding mill in one day, and the predetermined number of times is the average number of times the wear-resistant steel plate is impacted by the medium during the working time in one day.

[0013] Furthermore, the working time and the average number of times are collected from data of the actual working grinding mill.

[0014] According to another aspect of the present application, a wear-resistant steel plate impact test evaluation and processing device is also provided, including: a first shooting module, used to take a photo of the wear-resistant steel plate to obtain a first photo, wherein the first photo is a photo of the wear-resistant steel plate before the impact test; a second shooting module, used to take a photo of the wear-resistant steel plate after the impact test to obtain a second photo; an identification module, used to identify the cracks added in the second photo based on the first photo and the second photo; and a determination module, used to determine the impact resistance of the wear-resistant steel plate based on the cracks and the impact test that the wear-resistant steel plate has undergone.

[0015] Furthermore, the impact test is a test in which a medium of a predetermined weight is dropped from a predetermined height to hit the wear-resistant steel plate, wherein the test in which the medium of a predetermined weight is hit to the wear-resistant steel plate reaches a predetermined number of times in one impact test.

[0016] Furthermore, the medium includes at least one of the following: a spherical ball made of metal material, a heavy object of irregular shape, wherein the heavy object of irregular shape is used to simulate stones in a grinding mill.

[0017] Furthermore, the second photographing module is used to take a photograph of the wear-resistant steel plate that has experienced a predetermined time period and a predetermined number of medium impacts within the predetermined time period, wherein the predetermined time period is the working time of the grinding mill in one day, and the predetermined number of times is the average number of times the wear-resistant steel plate is impacted by the medium during the working time in one day.

[0018] Furthermore, the working time and the average number of times are collected from data of the actual working grinding mill.

[0019] In the embodiment of the present application, a first photo is taken of the wear-resistant steel plate, wherein the first photo is a photo of the wear-resistant steel plate before the impact test; a second photo is taken of the wear-resistant steel plate after the impact test; cracks added in the second photo are identified based on the first photo and the second photo; and the impact resistance of the wear-resistant steel plate is determined based on the cracks and the impact test that the wear-resistant steel plate has undergone. The present application solves the problem that there is no good solution in the prior art to test whether the wear-resistant steel plate in the mill can withstand the impact of the medium, so that the impact resistance of the steel plate can be obtained more accurately, providing data support for the use and replacement of the steel plate in the mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a flow chart of the wear-resistant steel plate impact test evaluation processing method according to an embodiment of the present application. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0024] In this embodiment, a wear-resistant steel plate impact test evaluation processing method is provided. Figure 1 : is a flow chart of a wear-resistant steel plate impact test evaluation processing method according to an embodiment of the present application, such as Figure 1 As shown, the process includes the following steps:

[0025] Step S102, taking a photo of the wear-resistant steel plate to obtain a first photo, wherein the first photo is a photo of the wear-resistant steel plate before the impact test;

[0026] Step S104, taking a second photo of the wear-resistant steel plate that has undergone the impact test; for example, the impact test is a test in which a medium of a predetermined weight is dropped from a predetermined height to hit the wear-resistant steel plate, wherein the test in which the medium of a predetermined weight is hit to the wear-resistant steel plate reaches a predetermined number of times in one impact test.

[0027] There are many types of media. Optionally, the medium may include at least one of the following: a metal ball, an irregularly shaped weight, wherein the irregularly shaped weight is used to simulate stones in a grinding mill.

[0028] In this step, the wear-resistant steel plate that has been subjected to a predetermined time and a predetermined number of medium impacts within the predetermined time is photographed, wherein the predetermined time is the working time of the mill in one day, and the predetermined number is the average number of times the wear-resistant steel plate is impacted by the medium during the working time in one day. The working time and the average number of times are collected from data of the actual working mill.

[0029] Step S106, identifying cracks added in the second photo according to the first photo and the second photo;

[0030] In this step, the first photo and the second photo are both taken under the same lighting conditions and the same shooting parameters. The first photo and the second photo are processed into grayscale images, and the grayscale images are processed into binary images, wherein in the binary image, cracks are displayed as first pixel values ​​and non-cracks are displayed as second pixel values. The binary image is used to compare the first photo and the second photo to obtain the added cracks.

[0031] In another optional embodiment, the cracks existing in the first photo can also be obtained from the second photo to determine whether the cracks existing in the first photo have changed relative to the cracks in the second photo. If they have changed, the magnitude of the change is determined. The changes in the existing cracks can also be compared through binary images. The impact resistance of the wear-resistant steel plate is determined based on the added cracks and the changes in the existing cracks.

[0032] The greater the rate of increasing cracks and the greater the change of existing cracks, the greater the impact performance of the wear-resistant steel plate.

[0033] In another optional embodiment, after taking a second photo of the wear-resistant steel plate that has undergone the impact test, the wear-resistant steel plate can be placed statically for a predetermined time and then taken to obtain the third photo, and the second photo and the third photo can be compared. The comparison can still be performed by the above-mentioned binarization, by comparing the binarized third photo and the second photo. Determine whether the cracks of the wear-resistant steel plate increase or the existing cracks increase after the predetermined static time. If there is an increase or increase, it is determined that the expansion of the cracks in the static state of the wear-resistant steel plate affects the performance of the wear-resistant steel plate.

[0034] Step S108, determining the impact resistance of the wear-resistant steel plate according to the crack and the impact test that the wear-resistant steel plate has undergone.

[0035] This application solves the problem in the prior art that there is no good solution to test whether the wear-resistant steel plate in the mill can withstand the impact of the medium, so that the impact resistance of the steel plate can be obtained more accurately, providing data support for the use and replacement of the steel plate in the mill.

[0036] As another optional implementation, a wear-resistant steel plate that has been used can be obtained for the above test to obtain a first photo A, a second photo A and a third photo A, and the wear-resistant steel plate to be tested is subjected to the above test to obtain a first photo B, a second photo B and a third photo B, and the second photo A is compared with the second photo B. If the crack degree (the number of cracks and / or the length of cracks and / or the depth of cracks) of the second photo B is greater than the crack degree of the second photo A, or the crack degree of the third photo B is greater than the crack degree of the third photo A, it is determined that the performance of the wear-resistant steel plate to be tested is worse than that of the wear-resistant steel plate that has been used.

[0037] As another optional embodiment, the ratio of the crack degrees of the second photo B and the second photo A can be used as the first coefficient, and the ratio of the crack degrees of the third photo B and the third photo A can be used as the second coefficient, and a weighted sum can be performed based on the first coefficient and the second coefficient, wherein the weights are pre-configured, and the performance of the wear-resistant steel plate to be tested relative to the wear-resistant steel plate already in use can be determined based on the weighted sum.

[0038] In this embodiment, an electronic device is provided, including a memory and a processor. The memory stores a computer program, and the processor is configured to run the computer program to execute the method in the above embodiment.

[0039] The above program can be run in the processor, or it can be stored in the memory (or computer-readable medium), which includes permanent and non-permanent, removable and non-removable media. Information storage can be achieved by any method or technology. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined in this article, computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0040] These computer programs can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps of the functions specified in one or more blocks can be implemented by different modules corresponding to different steps.

[0041] Such a device or system is provided in this embodiment. The device is called a wear-resistant steel plate impact test evaluation and processing device, comprising: a first shooting module, used to take a photo of the wear-resistant steel plate to obtain a first photo, wherein the first photo is a photo of the wear-resistant steel plate before the impact test; a second shooting module, used to take a photo of the wear-resistant steel plate after the impact test to obtain a second photo; an identification module, used to identify the cracks added in the second photo based on the first photo and the second photo; and a determination module, used to determine the impact resistance of the wear-resistant steel plate based on the cracks and the impact test that the wear-resistant steel plate has undergone.

[0042] The system or device is used to implement the functions of the method in the above-mentioned embodiment. Each module in the system or device corresponds to each step in the method, which has been explained in the method and will not be repeated here.

[0043] For example, the impact test is a test in which a medium of a predetermined weight is dropped from a predetermined height to hit the wear-resistant steel plate, wherein the test in which the medium of the predetermined weight is hit to the wear-resistant steel plate reaches a predetermined number of times in one impact test. Optionally, the medium includes at least one of the following: a spherical ball made of metal material, a heavy object of an irregular shape, wherein the heavy object of the irregular shape is used to simulate a stone in a grinding mill.

[0044] For another example, the second camera module is used to take a photo of the wear-resistant steel plate that has been subjected to a predetermined time and a predetermined number of medium impacts within the predetermined time, wherein the predetermined time is the working time of the mill in one day, and the predetermined number is the average number of times the wear-resistant steel plate is subjected to the medium impacts during the working time in one day. Optionally, the working time and the average number of times are collected from data of an actual working mill.

[0045] This application solves the problem in the prior art that there is no good solution to test whether the wear-resistant steel plate in the mill can withstand the impact of the medium, so that the impact resistance of the steel plate can be obtained more accurately, providing data support for the use and replacement of the steel plate in the mill.

[0046] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A wear-resistant steel plate impact test evaluation and processing method, It is characterized in that include: Taking a photo of the wear-resistant steel plate to obtain a first photo, wherein the first photo is a photo of the wear-resistant steel plate before the impact test; A second photo is obtained by photographing the wear-resistant steel plate that has undergone the impact test; Identify the added cracks in the second photo according to the first photo and the second photo; wherein the first photo and the second photo are both taken under the same lighting conditions and the same shooting parameters, process the first photo and the second photo into grayscale images, and process the grayscale images into binary images, wherein in the binary image, cracks are displayed as first pixel values, and non-cracks are displayed as second pixel values, and use the binary image to compare the first photo and the second photo, so as to obtain the added cracks; obtain the cracks that already exist in the first photo from the second photo, determine whether the cracks that already exist in the first photo have changed relative to the cracks in the second photo, and if so, determine the size of the change, compare the changes of the existing cracks through the binary image. Compare; determine the impact resistance of the wear-resistant steel plate according to the increase of cracks and the change of existing cracks; wherein, the greater the speed of increasing cracks and the greater the change of existing cracks, the greater the impact resistance of the wear-resistant steel plate; after taking a second photo of the wear-resistant steel plate that has undergone the impact test, the wear-resistant steel plate is placed statically for a predetermined time and then a third photo is taken of the wear-resistant steel plate, and the second photo is compared with the third photo, and the comparison is performed by the above-mentioned binarization processing, by comparing the binarized third photo with the second photo; determine whether the cracks of the wear-resistant steel plate increase or whether the existing cracks increase after being placed statically for a predetermined time, and if there is an increase or increase, it is determined that the expansion of the cracks of the wear-resistant steel plate in the static state affects the performance of the wear-resistant steel plate; The impact resistance of the wear-resistant steel plate is determined based on the cracks and the impact test that the wear-resistant steel plate has been subjected to.

2. The method according to claim 1, It is characterized in that The impact test is a test in which a medium of a predetermined weight is dropped from a predetermined height and hits the wear-resistant steel plate, wherein the test in which the medium of a predetermined weight is hit against the wear-resistant steel plate reaches a predetermined number of times in one impact test.

3. The method according to claim 2, It is characterized in that The medium includes at least one of the following: a metal ball, an irregularly shaped weight, wherein the irregularly shaped weight is used to simulate stones in a grinding mill.

4. The method according to any one of claims 1 to 3, It is characterized in that The second photo obtained by taking a photo of the wear-resistant steel plate after the impact test includes: The wear-resistant steel plate that has experienced a predetermined time and a predetermined number of medium impacts within the predetermined time is photographed, wherein the predetermined time is the working time of the mill in one day, and the predetermined number of times is the average number of times the wear-resistant steel plate is impacted by the medium during the working time in one day.

5. The method according to claim 4, It is characterized in that The working time and the average number of times are collected from data of the actual working grinding mill.

6. A wear-resistant steel plate impact test evaluation and processing device, It is characterized in that include: A first shooting module is used to take a photo of the wear-resistant steel plate to obtain a first photo, wherein the first photo is a photo of the wear-resistant steel plate before the impact test; The second shooting module is used to take a second photo of the wear-resistant steel plate that has undergone the impact test; The recognition module is used to identify the added cracks in the second photo according to the first photo and the second photo; wherein the first photo and the second photo are both taken under the same lighting conditions and the same shooting parameters, the first photo and the second photo are processed into grayscale images, and the grayscale images are processed into binary images, wherein in the binary image, cracks are displayed as first pixel values, and non-cracks are displayed as second pixel values, and the binary image is used to compare the first photo and the second photo, so as to obtain the added cracks; the cracks already existing in the first photo are obtained from the second photo, and it is determined whether the cracks already existing in the first photo have changed relative to the cracks in the second photo, and if so, the magnitude of the change is determined, and the changes of the existing cracks are compared through the binary image. The second picture is used for comparison; the impact resistance of the wear-resistant steel plate is determined according to the changes of the increased cracks and the existing cracks; wherein, the greater the speed of increasing the cracks and the greater the changes of the existing cracks, the greater the impact resistance of the wear-resistant steel plate; after taking a second picture of the wear-resistant steel plate that has undergone the impact test, the wear-resistant steel plate is placed statically for a predetermined time and then a third picture is taken of the wear-resistant steel plate, and the second picture is compared with the third picture, and the comparison is performed by the above-mentioned binarization processing, and the binarized third picture is compared with the second picture; it is determined whether the cracks of the wear-resistant steel plate increase or the existing cracks increase after being placed statically for a predetermined time, and if there is an increase or increase, it is determined that the expansion of the cracks of the wear-resistant steel plate in the static state affects the performance of the wear-resistant steel plate; A determination module is used to determine the impact resistance of the wear-resistant steel plate according to the crack and the impact test that the wear-resistant steel plate has undergone.

7. The device according to claim 6, It is characterized in that The impact test is a test in which a medium of a predetermined weight is dropped from a predetermined height and hits the wear-resistant steel plate, wherein the test in which the medium of a predetermined weight is hit against the wear-resistant steel plate reaches a predetermined number of times in one impact test.

8. The device according to claim 7, It is characterized in that The medium includes at least one of the following: a metal ball, an irregularly shaped weight, wherein the irregularly shaped weight is used to simulate stones in a grinding mill.

9. The device according to any one of claims 6 to 8, It is characterized in that The second camera module is used for: The wear-resistant steel plate that has experienced a predetermined time and a predetermined number of medium impacts within the predetermined time is photographed, wherein the predetermined time is the working time of the mill in one day, and the predetermined number of times is the average number of times the wear-resistant steel plate is impacted by the medium during the working time in one day.

10. The device according to claim 9, It is characterized in that The working time and the average number of times are collected from data of the actual working grinding mill.

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