Steel surface defect detection device and surface defect detection method

Abstract

The invention discloses a steel surface defect detection device which comprises a machine table, a working frame and a corrosion detection assembly, a conveying platform is arranged on the machine table, the working frame is arranged on the machine table, and the corrosion detection assembly is arranged on the working frame and located above the conveying platform. The corrosion detection assembly comprises a detection frame, a detection shaft, a detection servo motor and a plurality of detection blocks, the detection frame is arranged on the working frame, the detection shaft and the detection servo motor are arranged on the detection frame, the detection servo motor is connected with the detection shaft and used for driving the detection shaft to rotate, and the detection blocks are arranged on the detection frame. The detection block is made of a flexible material, a detection strain gauge is arranged on the detection block, and the detection shaft penetrates through the detection block and is fixedly connected with the detection block. The invention further discloses a steel surface defect detection method. Compared with the prior art, the method can achieve the efficient recognition of the corrosion points on the surface of the steel.

Description

Technical Field

[0001] The present invention relates to the technical field of steel surface treatment, and in particular to a steel surface defect detection device and a surface defect detection method. Background Art

[0002] In the process of steel trade and sales, the transportation and storage links are crucial. However, due to environmental factors, steel is very easy to rust during transportation and storage. Rust will significantly reduce the quality of steel and affect its mechanical properties, such as strength and toughness, which will have adverse consequences on subsequent engineering applications.

[0003] At present, the detection of steel corrosion mainly relies on manual observation. However, this method has many disadvantages. First, manual detection is inefficient and requires a lot of time and manpower costs. Second, manual detection is prone to missed detection and false detection, and it is difficult to ensure the accuracy of detection. Especially for the initial stage of steel corrosion, since the signs of corrosion are not obvious, manual detection is often difficult to detect.

[0004] In the prior art, although there are some attempts to use other technical means for detection, the results are not ideal. For example, some traditional physical detection methods, such as ultrasonic detection and magnetic particle detection, can detect a certain degree of corrosion, but these methods usually require professional equipment and technicians, are complicated to operate, are costly, and are not sensitive enough to detect the initial state of corrosion.

[0005] For high-quality steel, the identification of the initial state of corrosion is particularly critical. High-quality steel is usually used in engineering fields with extremely high quality requirements. If the initial state of corrosion cannot be discovered and treated in time, it may lead to a decline in engineering quality and even cause safety accidents.

[0006] In view of this, a steel surface defect detection device and a surface defect detection method are proposed. Summary of the invention

[0007] The object of the present invention is to provide a steel surface defect detection device and a surface defect detection method, which can realize efficient identification of rust spots on the steel surface.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions:

[0009] A steel surface defect detection device comprises a machine platform, a work frame and a rust detection component, wherein the machine platform is provided with a conveying platform, the work frame is arranged on the machine platform, the rust detection component is arranged on the work frame and is located above the conveying platform, the rust detection component comprises a detection frame, a detection shaft, a detection servo motor and a plurality of detection blocks, the detection frame is arranged on the work frame, the detection shaft and the detection servo motor are arranged on the detection frame, the detection servo motor is connected to the detection shaft and is used to drive the detection shaft to rotate, the detection block is made of flexible material, the detection block is provided with a detection strain gauge, the detection shaft passes through the detection block and is fixedly connected to the detection block.

[0010] In a preferred embodiment, the flexible material is a rubber material or a silicone material.

[0011] In a preferred embodiment, the detection block has a triangular portion, the tip of the triangular portion is inclined downward, and the tip of the triangular portion is provided with a hooking step.

[0012] In a preferred embodiment, the detection strain gauge includes a first strain gauge and a second strain gauge, the first strain gauge is arranged on the lower surface of the triangular portion, and the second strain gauge is arranged in the hooking step.

[0013] In a preferred embodiment, the second strain gauge is configured in a wire shape.

[0014] In a preferred embodiment, the conveying platform comprises a plurality of motorized conveying rollers.

[0015] A method for detecting surface defects of steel, which uses the above-mentioned device for detecting surface defects of steel, comprises the following steps:

[0016] Step 1: The conveying platform includes a plurality of electric conveying rollers;

[0017] Step 2: Transport the steel plate so that it can be quickly tested for the first time. If no abnormal signal is generated, the steel plate is qualified and no processing is required. If an abnormal signal is generated, the steel plate is transported to the position where step 1 is completed, and then re-tested for the second time.

[0018] Step 3: Treat the rust spots detected during the second test.

[0019] Compared with the prior art, in the present invention, during the detection process, the detection servo motor drives the detection shaft to rotate, thereby realizing the rotation of the detection block. The detection block has a state of contacting the steel plate and not contacting the steel plate during the rotation process. When performing the detection work, the detection block needs to contact the surface of the steel plate. When the steel plate is transported by the conveying platform, relative movement occurs between the steel plate and the detection block. During the relative movement, when abnormal force occurs, the detection strain gauge can realize the corresponding signal detection. Specifically, the detection process mainly faces two situations. One situation is that the anti-rust oil on the surface of the steel plate is partially missing. At this time, the friction between the steel plate and the detection block increases, and the detection block will be stretched, thereby realizing signal detection. Under this detection result, the anti-rust oil can be supplemented. Another situation is that there are rust spots on the surface of the steel plate, and the rust spots will exert force on the detection block, and the detection block can realize detection and identification. After detection and identification, the rust spots can be targeted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The invention relates to a structural schematic diagram of a steel surface defect detection device.

[0021] Figure 2 The present invention relates to a structural schematic diagram of a steel surface defect detection device with the machine table and the conveying platform removed.

[0022] Figure 3 The present invention is a partial structural schematic diagram of a steel surface defect detection device.

[0023] Figure 4 The invention relates to a structural schematic diagram of a detection block of a steel surface defect detection device.

[0024] In the picture

[0025] Machine 1; working frame 2; rust detection assembly 3; detection frame 4; detection servo motor 5; detection block 6; triangular part 7; first strain gauge 8; hooking step 9; second strain gauge 10; conveying platform 11; electric conveying roller 12. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0028] Embodiment 1:

[0029] like Figures 1 to 3As shown, a steel surface defect detection device includes a machine 1, a work frame 2 and a rust detection component 3. The machine 1 is provided with a conveying platform 11, the work frame 2 is arranged on the machine 1, the rust detection component 3 is arranged on the work frame 2, and is located above the conveying platform 11, the rust detection component 3 includes a detection frame 4, a detection shaft, a detection servo motor 5 and a plurality of detection blocks 6, the detection frame 4 is arranged on the work frame 2, the detection shaft and the detection servo motor 5 are arranged on the detection frame 4, the detection servo motor 5 is connected to the detection shaft, and is used to drive the detection shaft to rotate, the detection block 6 is made of flexible material, the detection block 6 is provided with a detection strain gauge, the detection shaft passes through the detection block 6, and is fixedly connected to the detection block 6.

[0030] In the detection process of a steel surface defect detection device of this embodiment, the detection servo motor 5 drives the detection shaft to rotate, thereby realizing the rotation of the detection block 6. The detection block 6 has a state of contacting the steel plate and not contacting the steel plate during the rotation process. When performing the detection work, the detection block 6 needs to contact the surface of the steel plate. When the steel plate is transported by the conveying platform 11, relative movement occurs between the steel plate and the detection block 6. During the relative movement, when abnormal force occurs, the detection strain gauge can realize the corresponding signal detection. Specifically, the detection process mainly faces two situations. One situation is that the anti-rust oil on the surface of the steel plate is partially missing. At this time, the friction between the steel plate and the detection block 6 increases, and the detection block 6 will be stretched, thereby realizing signal detection. Under this detection result, the anti-rust oil can be supplemented. Another situation is that there are rust spots on the surface of the steel plate, and the rust spots will exert force on the detection block 6, and the detection block 6 can realize detection and identification. After detection and identification, the rust spots can be targeted.

[0031] Specifically, the flexible material is a rubber material or a silicone material.

[0032] Furthermore, the detection block 6 has a triangular portion 7, the tip of the triangular portion 7 is inclined downward, and the tip of the triangular portion 7 is provided with a hooking step 9. The shape of the triangular portion 7 enables the detection block 6 to easily switch between the contact and non-contact states of the steel plate. When detection is required, the triangular portion 7 of the detection block 6 can contact the steel plate relatively smoothly, and when detection is not required, it can leave the surface of the steel plate relatively easily, thereby improving the flexibility and efficiency of detection. The setting of the hooking step 9 is of significant significance. During the detection process, when a rust spot on the surface of the steel plate passes through the hooking step 9, it will be hooked by the hooking step 9. At this time, the rust spot will exert a large force on the detection block 6, and the detection strain gauge on the detection block 6 can keenly capture this abnormal force condition, thereby realizing accurate detection of the rust spot. Compared with traditional detection methods, this design can locate the rust spot more accurately and avoid missed detection.

[0033] Furthermore, the detection strain gauge includes a first strain gauge 8 and a second strain gauge 10, wherein the first strain gauge 8 is arranged on the lower surface of the triangular portion 7, and the second strain gauge 10 is arranged in the hooking step 9. The first strain gauge 8 is arranged on the lower surface of the triangular portion 7, and is mainly used to detect the situation when the detection block 6 is stretched. For example, the local lack of anti-rust oil on the surface of the steel plate leads to increased friction, so that when the detection block 6 is stretched, the first strain gauge 8 can detect the signal in time. The second strain gauge 10 is arranged in the hooking step 9, and is mainly used for detection when the hooking step 9 interacts with the rust point. The first strain gauge 8 and the second strain gauge 10 complement each other and play a role in different detection scenarios, greatly improving the accuracy and reliability of the detection. Through this design, whether it is the lack of anti-rust oil or the existence of rust points, it can be accurately detected, providing an accurate basis for subsequent targeted treatment, ensuring the quality and efficiency of steel surface treatment.

[0034] Furthermore, the second strain gauge 10 is configured to be wire-shaped, so as to facilitate the detection of rust spots.

[0035] Furthermore, the conveying platform 11 includes a plurality of electric conveying rollers 12. The setting of the plurality of electric conveying rollers 12 ensures that the steel plate can move stably during the processing, and each link from the rust detection component 3 to the rust treatment component can proceed smoothly. The plurality of electric conveying rollers 12 work together to provide continuous and uniform power for the steel plate, so that it can pass through each processing area at a suitable speed. At the same time, the flexibility of the conveying platform 11 is not limited to the setting of the plurality of electric conveying rollers 12, and other methods that can achieve the design goals can also be adopted.

[0036] Embodiment 2:

[0037] A method for detecting surface defects of steel, which uses the device for detecting surface defects of steel described in the first embodiment, comprises the following steps:

[0038] Step 1: The conveying platform includes a plurality of electric conveying rollers;

[0039] Step 2: Transport the steel plate so that it can be quickly tested for the first time. If no abnormal signal is generated, the steel plate is qualified and no processing is required. If an abnormal signal is generated, the steel plate is transported to the position where step 1 is completed, and then re-tested for the second time.

[0040] Step 3: Treat the rust spots detected during the second test.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." or "comprise..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements. In addition, in this article, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself.

[0042] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A steel surface defect detection device, characterized in that: It includes a machine platform, a work frame and a rust detection component. The machine platform is provided with a conveying platform. The work frame is arranged on the machine platform. The rust detection component is arranged on the work frame and is located above the conveying platform. The rust detection component includes a detection frame, a detection shaft, a detection servo motor and multiple detection blocks. The detection frame is arranged on the work frame. The detection shaft and the detection servo motor are arranged on the detection frame. The detection servo motor is connected to the detection shaft and is used to drive the detection shaft to rotate. The detection block is made of flexible material. A detection strain gauge is arranged on the detection block. The detection shaft passes through the detection block and is fixedly connected to the detection block.

2. A steel surface defect detection device according to claim 1, characterized in that: The flexible material is a rubber material or a silicone material.

3. A steel surface defect detection device according to claim 1, characterized in that: The detection block has a triangular portion, the tip of which is inclined downward, and a hooking step is provided at the tip of the triangular portion.

4. A steel surface defect detection device according to claim 3, characterized in that: The detection strain gauge includes a first strain gauge and a second strain gauge, wherein the first strain gauge is arranged on the lower surface of the triangular portion, and the second strain gauge is arranged in the hooking step.

5. A steel surface defect detection device according to claim 4, characterized in that: The second strain gauge is configured in a wire shape.

6. A steel surface defect detection device according to claim 1, characterized in that: The conveying platform includes a plurality of motorized conveying rollers.

7. A method for detecting surface defects of steel, characterized in that: The steel surface defect detection device according to any one of claims 1 to 6 comprises the following steps: Step 1: The conveying platform includes a plurality of electric conveying rollers; Step 2: Transport the steel plate so that it can be quickly tested for the first time. If no abnormal signal is generated, the steel plate is qualified and no processing is required. If an abnormal signal is generated, the steel plate is transported to the position where step 1 is completed, and then re-tested for the second time. Step 3: Treat the rust spots detected during the second test.

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