A steel surface defect detection device and a surface defect detection method

Abstract

The application discloses a kind of steel surface defect detection devices, including machine table, working frame and corrosion detection component, the conveying platform is equipped on the machine table, the working frame is located on the machine table, the corrosion detection component is located on the working frame, and located above the conveying platform, the corrosion detection component includes detection frame, detection shaft, detection servo motor and multiple detection blocks, the detection frame is located on the working frame, the detection shaft and the detection servo motor are equipped on the detection frame, the detection servo motor is connected with the detection shaft, for driving the detection shaft rotation, the detection block is made of flexible material, detection strain gauge is equipped on the detection block, the detection shaft passes through the detection block, and is fixedly connected with the detection block.The application further discloses a kind of steel surface defect detection method.Compared with prior art, the application can realize the efficient identification of steel surface corrosion point.

Description

Technical Field

[0001] This invention relates to the field of steel surface treatment technology, and in particular to a steel surface defect detection device and a surface defect detection method. Background Technology

[0002] In the trade and sale of steel, the transit and storage stages are crucial. However, due to environmental factors, steel is highly susceptible to corrosion during transit and storage. Corrosion significantly reduces the quality of steel, affecting its mechanical properties such as strength and toughness, and consequently having adverse consequences for subsequent engineering applications.

[0003] Currently, the detection of steel corrosion mainly relies on manual observation. However, this method has many drawbacks. First, manual inspection is inefficient, requiring a significant amount of time and manpower. Second, manual inspection is prone to missed or false detections, making it difficult to guarantee accuracy. This is especially true for the initial stages of steel corrosion, where the signs of corrosion are often subtle and difficult to detect manually.

[0004] While some attempts have been made to use other technical means for detection in the existing technology, the results have not been ideal. For example, some traditional physical detection methods, such as ultrasonic testing and magnetic particle testing, can detect a certain degree of rust, but these methods usually require specialized equipment and technicians, are complex to operate, have high costs, and are not sensitive enough to detect the initial stage of rust.

[0005] For high-quality steel, identifying the initial stage of corrosion is particularly crucial. High-quality steel is typically used in engineering fields with extremely high quality requirements. Failure to detect and address the initial stage of corrosion in a timely manner can lead to a decline in project quality and even cause safety accidents.

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

[0007] The purpose of this invention is to provide a steel surface defect detection device and a surface defect detection method, which can achieve efficient identification of rust points on the steel surface.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0009] A steel surface defect detection device includes a machine base, a work frame, and a corrosion detection component. The machine base is equipped with a conveyor platform, the work frame is mounted on the machine base, and the corrosion detection component is mounted on the work frame and located above the conveyor platform. The corrosion detection component includes a detection frame, a detection shaft, a detection servo motor, and multiple detection blocks. The detection frame is mounted on the work frame, and the detection shaft and the detection servo motor are mounted on the detection frame. The detection servo motor is connected to the detection shaft and drives its rotation. The detection blocks are made of flexible material and have strain gauges mounted on them. The detection shaft passes through the detection blocks and is fixedly connected to them.

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

[0011] In a preferred embodiment, the detection block has a triangular portion with the tip of the triangular portion tilted downward and the tip of the triangular portion having a hook step.

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

[0013] In a preferred embodiment, the second strain gauge is configured as a filament.

[0014] In a preferred embodiment, the conveying platform includes a plurality of electrically driven conveying rollers.

[0015] A method for detecting surface defects in steel, using the aforementioned steel surface defect detection device, includes the following steps:

[0016] Step 1: The conveying platform includes multiple electrically driven conveying rollers;

[0017] Step 2: Convey the steel plate so that it can be quickly inspected 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 conveyed to the position where Step 1 was completed, and then the second inspection is carried out again.

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

[0019] Compared to existing technologies, this invention utilizes a servo motor to drive the detection shaft during the detection process, thereby rotating the detection block. The detection block rotates in two states: contacting the steel plate and not contacting it. During detection, the detection block must contact the steel plate surface. As the steel plate is conveyed by the platform, relative movement occurs between the steel plate and the detection block. During this relative movement, when abnormal forces occur, the strain gauges can detect the corresponding signals. Specifically, the detection process mainly faces two scenarios. One scenario is the partial loss of anti-rust oil on the steel plate surface. In this case, the friction between the steel plate and the detection block increases, causing the detection block to stretch and thus enabling signal detection. In this case, the anti-rust oil can be replenished. The other scenario is the presence of rust spots on the steel plate surface. These rust spots exert force on the detection block, which can then detect and identify them. After detection and identification, the rust spots can be treated specifically. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a steel surface defect detection device according to the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of a steel surface defect detection device after removing the machine base and conveyor platform, which is related to the present invention.

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

[0023] Figure 4 This is a schematic diagram of the structure of the detection block of a steel surface defect detection device according to the present invention.

[0024] In the picture

[0025] Machine base 1; work frame 2; rust detection component 3; detection frame 4; detection servo motor 5; detection block 6; triangular part 7; first strain gauge 8; hook step 9; second strain gauge 10; conveying platform 11; electric conveying roller 12. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0028] Example 1:

[0029] like Figures 1 to 3As shown, a steel surface defect detection device includes a machine base 1, a work frame 2, and a corrosion detection component 3. The machine base 1 is equipped with a conveying platform 11, the work frame 2 is mounted on the machine base 1, and the corrosion detection component 3 is mounted on the work frame 2 and located above the conveying platform 11. The corrosion detection component 3 includes a detection frame 4, a detection shaft, a detection servo motor 5, and multiple detection blocks 6. The detection frame 4 is mounted on the work frame 2, and the detection shaft and the detection servo motor 5 are mounted 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 blocks 6 are made of flexible material and are equipped with detection strain gauges. The detection shaft passes through the detection blocks 6 and is fixedly connected to the detection blocks 6.

[0030] In this embodiment, a steel surface defect detection device uses a detection servo motor 5 to drive the detection shaft to rotate, thereby rotating the detection block 6. The detection block 6 rotates in two states: contacting the steel plate and not contacting it. During detection, the detection block 6 must contact the steel plate surface. When the steel plate is conveyed by the conveying platform 11, relative movement occurs between the steel plate and the detection block 6. During this relative movement, when abnormal force occurs, the strain gauge can detect the corresponding signal. Specifically, the detection process mainly faces two situations. One situation is that the anti-rust oil on the steel plate surface is partially missing. In this case, the friction between the steel plate and the detection block 6 increases, and the detection block 6 is stretched, thus achieving signal detection. In this case, the anti-rust oil can be replenished. The other situation is that the steel plate surface has rust spots. These rust spots exert force on the detection block 6, which can then be detected and identified. After detection and identification, the rust spots can be treated specifically.

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

[0032] Furthermore, the detection block 6 has a triangular portion 7, the tip of which is inclined downwards, and a hook step 9 is provided at the tip of the triangular portion 7. The shape of the triangular portion 7 allows the detection block 6 to easily switch between contacting and not contacting the steel plate. When testing is required, the triangular portion 7 of the detection block 6 can smoothly contact the steel plate, and when testing is not required, it can relatively easily leave the surface of the steel plate, improving the flexibility and efficiency of the testing. The hook step 9 is of significant importance. During the testing process, when a rust spot on the surface of the steel plate passes through the hook step 9, it will be hooked by the hook step 9. At this time, the rust spot will exert a large force on the detection block 6, and the strain gauge on the detection block 6 can sensitively capture this abnormal force, thereby achieving accurate detection of the rust spot. Compared with traditional testing methods, this design can more accurately locate the rust spot and avoid missed detections.

[0033] Furthermore, the detection strain gauge includes a first strain gauge 8 and a second strain gauge 10. The first strain gauge 8 is disposed on the lower surface of the triangular portion 7, and the second strain gauge 10 is disposed in the hook step 9. The first strain gauge 8, disposed on the lower surface of the triangular portion 7, is mainly used to detect the situation when the detection block 6 is stretched. For example, when the anti-rust oil on the steel plate surface is partially missing, resulting in increased friction and stretching of the detection block 6, the first strain gauge 8 can detect the signal in time. The second strain gauge 10, disposed in the hook step 9, is mainly used to detect when the hook 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, both the absence of anti-rust oil and the presence of rust points can be accurately detected, providing an accurate basis for subsequent targeted treatment and ensuring the quality and efficiency of steel surface treatment.

[0034] Furthermore, the second strain gauge 10 is configured as a wire to facilitate its rust point detection function.

[0035] Furthermore, the conveying platform 11 includes multiple electrically driven conveying rollers 12. The arrangement of these multiple rollers 12 ensures stable movement of the steel plate during processing, allowing for smooth operation at each stage, from the rust detection component 3 to the rust treatment component. The multiple rollers 12 work collaboratively to provide continuous and uniform power to the steel plate, enabling it to pass through each processing area at an appropriate speed. At the same time, the flexibility of the conveying platform 11 is not limited to the arrangement of multiple electrically driven rollers 12; other methods that achieve the design objectives can also be adopted.

[0036] Example 2:

[0037] A method for detecting surface defects in steel, using the steel surface defect detection device described in Embodiment 1, includes the following steps:

[0038] Step 1: The conveying platform includes multiple electrically driven conveying rollers;

[0039] Step 2: Convey the steel plate so that it can be quickly inspected 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 conveyed to the position where Step 1 was completed, and then the second inspection is carried out again.

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

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Unless otherwise specified, an element defined by the phrase "comprising..." or "including..." does not exclude the presence of additional elements in the process, method, article, or terminal device that includes said element. Additionally, in this document, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number.

[0042] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be easily made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. 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, The system includes a machine base, a work frame, and a corrosion detection component. The machine base has a conveyor platform, the work frame is mounted on the machine base, and the corrosion detection component is mounted on the work frame and located above the conveyor platform. The corrosion detection component includes a detection frame, a detection shaft, a detection servo motor, and multiple detection blocks. The detection frame is mounted on the work frame, and the detection shaft and the detection servo motor are mounted on the detection frame. The detection servo motor is connected to the detection shaft to drive its rotation. The detection blocks are made of flexible material and have strain gauges. The detection shaft passes through the detection blocks and is fixedly connected to them. Each detection block has a triangular portion with its tip angled downwards and a hook step at the tip. The strain gauges include a first strain gauge and a second strain gauge. The first strain gauge is located on the lower surface of the triangular portion, and the second strain gauge is located within the hook step.

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

3. The steel surface defect detection device according to claim 1, characterized in that, The second strain gauge is configured as a filament.

4. The steel surface defect detection device according to claim 1, characterized in that, The conveying platform includes multiple electric conveying rollers.

5. A method for detecting surface defects in steel, characterized in that, The application of the steel surface defect detection device according to any one of claims 1 to 4 includes the following steps: Step 1: The conveying platform includes multiple electrically driven conveying rollers; Step 2: Convey the steel plate so that it can be quickly inspected 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 conveyed to the position where Step 1 was completed and then the second inspection is carried out again. Step 3: Treat the rust spots detected during the second inspection.

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