Quenched steel plate shape detector

Abstract

The utility model relates to the technical field of steel plate quenching detection, and discloses a quenched steel plate shape detector which comprises a movable roller way, a portal frame and an imaging system, the moving roller way is used for conveying steel plates, and the portal frame is installed on the moving track and arranged in the width direction of the moving track. The imaging system is installed on the portal frame, comprises three sets of industrial cameras and is used for collecting images of the steel plates in three areas of the left side, the middle and the right side of the moving track in real time, the image collection mode has high resolution, and shooting can be conducted in each small area with the higher resolution through segmented collection, so that clearer details are obtained; the size and position of each segment can be adjusted according to actual needs, the method is suitable for target areas of different shapes and sizes, and the flexibility is high; small-size image files are easier to manage and transmit, and the requirements for storage and network resources are reduced; and a plurality of segments can be processed at the same time, so that the processing speed and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel plate quenching detection technical field more specifically, relate to a kind of quenching steel plate plate shape detector. BACKGROUND

[0002] In modern industrial production, steel plate is widely used in construction, machinery manufacturing, automobile manufacturing, shipbuilding and other industries as an important basic material, and the quality of steel plate directly affects the performance and service life of the final product. Among them, the plate shape quality of steel plate (including flatness, waviness, edge warping, etc.) is one of the important indicators to measure the quality of steel plate. Good plate shape not only improves the use performance of steel plate, but also reduces the scrap rate in the subsequent processing process and reduces production cost.

[0003] At present, some steel plate plate shape detection equipment based on photoelectric, ultrasonic wave, laser and other technologies have appeared on the market. These devices improve the detection accuracy and efficiency to some extent. For example, the invention patent application with publication number CN113819841A discloses a plate shape detection device based on machine vision. The upper side of the strip steel is provided with a detection laser emitter, and the side away from the rolling direction of the strip steel is provided with an image acquisition device and a standard laser emitter. The standard laser emitter and the image acquisition device are installed at the same position. The detection laser emitter, the standard laser emitter and the image acquisition device are all connected to the image processing device.

[0004] Although the existing steel plate plate shape detection equipment improves the detection accuracy and efficiency to some extent, it uses a single image acquisition device and a standard laser emitter to analyze and process the surface of the whole steel plate, which has the defects of low processing speed and efficiency, low resolution and inability to obtain clearer details. UTILITY MODEL CONTENTS

[0005] The utility model aims to overcome at least one of the defects in the prior art, and provides a quenching steel plate plate shape detector to solve the technical problems of low resolution and inability to obtain clearer details when using a single image acquisition device and a standard laser emitter.

[0006] The technical scheme adopted by the utility model is a quenching steel plate plate shape detector. The plate shape detector includes a moving roller, a gantry and an imaging system. The moving roller is used to convey the steel plate. The gantry is installed on the moving track and is arranged along the width direction of the moving track. The imaging system is installed on the gantry and includes three groups of industrial cameras. The imaging system is used to collect the images of the steel plate in the left, middle and right areas of the moving track in real time. Each group of industrial cameras is not less than one.

[0007] The present scheme monitors the images of the steel plates in the left, middle and right areas of the moving track in real time through three groups of industrial cameras. The three groups of industrial cameras have high resolution, and through segmented acquisition, higher resolution can be used for shooting in each small area to obtain clearer details. The size and position of each segment can be adjusted according to actual needs, which is suitable for target areas of different shapes and sizes, and has high flexibility. Small size image files are easier to manage and transmit, reducing the demand for storage and network resources. Moreover, multiple segments can be processed simultaneously to improve processing speed and efficiency.

[0008] Further, each group of industrial cameras is three, and the direction of the connection of the three groups of industrial cameras is parallel to the width direction of the moving roller. The design ensures uniform coverage of the entire width range of the steel plate, avoiding detection blind spots caused by uneven distribution of cameras. In addition, this layout makes the detection results more comprehensive and accurate, improving the reliability and accuracy of the detection system.

[0009] Further, each group of industrial cameras can shoot the visible area within 0.5m in the length direction of the roller. The visible area within 0.5m helps to improve the resolution and clarity of the image, so that more detailed image information can be obtained in a smaller area, thereby improving the detection capability of the steel plate surface defects.

[0010] Further, the imaging system further comprises a laser, the laser is provided with three, the direction of the connection of the three lasers is parallel to the width direction of the moving roller, each laser corresponds to a group of industrial cameras, each laser can emit three infrared laser lines, and each industrial camera can shoot a reflected infrared laser line of the steel plate. By introducing the laser and cooperating with the industrial camera, the design can use the laser line as a reference to enhance the recognition of the surface features of the steel plate, especially in poor light conditions, the detection accuracy can also be maintained. Each laser emits three infrared laser lines, which can provide more reference information and further improve the reliability of detection.

[0011] Further, it further comprises a cooling system for cooling the imaging system. By setting the cooling system, the present design effectively solves the problem that the imaging system may overheat after a long time of work, prolongs the service life of the equipment, and at the same time ensures the continuity and stability of the detection process.

[0012] Further, the cooling system comprises a water cooling tank, a cooling pipeline and a water pump, one end of the cooling pipeline is connected with a water outlet of the water cooling tank, the other end of the cooling pipeline is connected with a water return port of the water cooling tank in sequence through nine industrial cameras and three lasers, and the water pump is arranged in the water cooling tank. The cooling system specifically comprises the water cooling tank, the cooling pipeline and the water pump, forms a closed cooling cycle, ensures effective circulation of the cooling liquid, improves the cooling efficiency, and is convenient for maintenance and management.

[0013] Further, the cooling system further comprises temperature sensors and a control unit, the temperature sensors are arranged on the industrial cameras and the lasers, the control unit is electrically connected with the temperature sensors and the water pump, the control unit receives temperature signals of the temperature sensors, and whether the water pump is started or stopped is judged according to a preset temperature threshold. Through the arrangement of the temperature sensors on the industrial cameras and the lasers and the combination of the control unit, temperature monitoring and automatic adjustment are realized, the working state of the equipment can be monitored in real time, the overheating phenomenon is prevented, and the stability and safety of the system are further improved.

[0014] Further, support legs are arranged below the gantry, and straight ladders are arranged on the support legs. The support legs are arranged below the gantry, and the straight ladders are arranged on the support legs, so that the maintenance and inspection of the equipment by workers are facilitated, and the maintainability and operability of the equipment are improved.

[0015] Further, guardrails are arranged at two ends of the gantry, and roller guard plates are arranged around the movable roller way. The guardrails are arranged at the two ends of the gantry, and the roller guard plates are arranged around the movable roller way, the safety of operation is improved, the occurrence of accidents is prevented, and the personal safety of the operators is protected.

[0016] Compared with the prior art, the beneficial effects of the present application are that: the present application uses three groups of industrial cameras to monitor the images of the steel plates in the three regions on the left side, the middle and the right side of the movable track in real time, has high resolution, can use higher resolution to take pictures in each small area through segmented acquisition, and can obtain clearer details; the size and position of each segment can be adjusted according to actual needs, is suitable for target areas of different shapes and sizes, and has high flexibility; small-size image files are easier to manage and transmit, and the demand for storage and network resources is reduced; and multiple segments can be processed simultaneously, improving processing speed and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a schematic diagram of the overall structure of the present application.

[0018] Fig. 2 It is a schematic diagram of the structure of the quenching machine of the present application.

[0019] Fig. 3 The figure is a zoning schematic diagram of the steel plate in the utility model.

[0020] In the figure: 1, first nozzle; 2, second nozzle; 3, third nozzle; 4, fourth nozzle; 5, fifth nozzle; 6, sixth nozzle; 7, seventh nozzle; 8, eighth nozzle; 9, first area; 10, second area; 11, third area; 12, fourth area; 13, fifth area; 14, steel plate; 15, lower roller way; 16, upper roller way; 17, straight ladder; 18, beam frame; 19, guardrail; 20, laser box; 21, door frame; 22, camera box; 23, roller way guard plate; 24, water cooling box; 25, gas distribution pipe; 26, cooling pipe; 27, inclined support. DETAILED DESCRIPTION

[0021] The drawings of the utility model are only used for exemplary illustration and cannot be understood as the limitation of the utility model. In order to better illustrate the following embodiments, some components of the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it can be understood that some well-known structures in the drawings and their descriptions can be omitted.

[0022] As shown in Figs. 1-3 A steel plate automatic quenching plate shape adjusting equipment, comprising a shot blasting machine, a heat treatment furnace, a quenching machine, a plate shape detector, a quenching machine system and a plate shape detector system;

[0023] The shot blasting machine is provided with a shot blasting roller way, and the shot blasting roller way is used for conveying the steel plate 14 to perform shot blasting treatment on the steel plate 14; the heat treatment furnace is used for heating the steel plate 14; the quenching machine adopts cooling water to quench the steel plate 14; the plate shape detector is used for detecting the plate shape of the quenched steel plate 14; the quenching machine system is used for controlling the quenching of the quenching machine; and the plate shape detector system can adjust the quenching process parameters according to the plate shape detection result of the plate shape detector on the steel plate 14.

[0024] In the scheme, the thickness of the steel plate 14 is 6mm-20mm, the width is 1500mm-4100mm, the speed of the shot blasting roller way is 1.5m / min-4.5m / min, the diameter of the shot blasting shot is 1.0mm-1.2mm; the heat treatment furnace is a roller bottom type continuous heat treatment furnace, the furnace temperature of the heat treatment furnace is set to 910℃-930℃, the quenching temperature of the heat treatment furnace is 890℃-910℃, the heating time of the heat treatment furnace is 1.1min / mm-1.5min / mm, the furnace time of the steel plate 14 is 25min-55min, and the time for the steel plate 14 to be kept warm after heating in the heat treatment furnace is 5-15min.

[0025] The quenching machine is a roller gap type quenching machine, which comprises an upper roller 16 and a lower roller 15, the lower roller 15 is arranged below the upper roller 16, and a roller gap for the steel plate 14 to pass through is arranged between the upper roller 16 and the lower roller 15; the upper roller 16 and the lower roller 15 are oppositely arranged to form a plurality of pairs of rollers, a plate shape detector is arranged at the rear of the quenching machine, a detection grating is installed at the entrance of the quenching machine, and an encoder is installed on the roller of the quenching machine; the detection grating and the encoder cooperate and can calculate the position of the steel plate 14 in the quenching machine according to the roller speed of the quenching machine.

[0026] The quenching machine is provided with a high-pressure section and a low-pressure section, the length of the high-pressure section is 3.4 m, and the length of the low-pressure section is 15.6 m; the high-pressure section comprises a first part and a second part, the first part of the high-pressure section comprises a first nozzle 1, a second nozzle 2, a third nozzle 3 and a fourth nozzle 4, a group of first nozzles 1 is arranged above the steel plate 14, a group of second nozzles 2 is arranged below the steel plate 14, the first nozzle 1 and the second nozzle 2 are oppositely arranged, a group of third nozzles 3 is arranged above the steel plate 14, a group of fourth nozzles 4 is arranged below the steel plate 14, the third nozzle 3 and the fourth nozzle 4 are oppositely arranged, and the first nozzle 1, the second nozzle 2, the third nozzle 3 and the fourth nozzle 4 are all slit nozzles; the second part of the high-pressure section comprises a fifth nozzle 5 and a sixth nozzle 6, four groups of fifth nozzles 5 are arranged above the steel plate 14, and four groups of sixth nozzles 6 are arranged below the steel plate 14, the fifth nozzle 5 and the sixth nozzle 6 are oppositely arranged; the low-pressure section is provided with a seventh nozzle 7 and an eighth nozzle 8, twelve groups of seventh nozzles 7 are arranged above the steel plate 14, twelve groups of eighth nozzles 8 are arranged below the steel plate 14, and the seventh nozzle 7 and the eighth nozzle 8 are oppositely arranged; the fifth nozzle 5, the sixth nozzle 6, the seventh nozzle 7 and the eighth nozzle 8 are all high-density nozzles; the number of each group is not less than two, all the nozzles are provided with a flow meter for detecting flow and an air valve for controlling the size of flow, the water pressure of the nozzles of the high-pressure section is 0.79-0.81 MPa, and the flow is 1550-2650 m3 / h, the water pressure of the nozzles of the low-pressure section is 0.3-0.5 MPa, and the flow is 1550-2050 m3 / h; the roller speed of the quenching machine is 6-13 m / min, the roller speed of the plate shape detector through which the steel plate 14 passes is 1.5-24 m / min, and the distance between the upper roller 16 of the quenching machine and the upper surface of the steel plate 14 is 0.2-0.6 mm.

[0027] The quenching machine system comprises a tertiary system, a secondary system and a primary system, the tertiary system stores information of the steel plate 14, the information of the steel plate 14 comprises steel grade, plate number, plate thickness, plate width, plate length and plate heating temperature of the steel plate 14; the secondary system stores quenching processes corresponding to different kinds of steel plates 14, and the primary system controls the roller speed, the cooling water flow of the nozzle, the number of open air valves of the nozzle and other quenching process parameters of the quenching machine in real time according to the quenching process of the secondary system.

[0028] The quenching machine and the system thereof are involved in the present application, and the present application mainly discloses a quenching steel plate shape detector, which has a plate shape detector system, stores the judgment standard of whether the steel plate 14 is qualified and the quenching process adjustment strategy corresponding to the unqualified plate shape of the steel plate 14, sends the corresponding quenching process adjusted to the secondary system according to the detection result of the plate shape detector on the plate shape of the steel plate 14, and then controls the roller speed, the cooling water flow of the nozzle, the number of open air valves of the nozzle and other quenching process parameters of the quenching machine according to the adjusted quenching process in the secondary system, so as to realize real-time adjustment. If the plate shape of the steel plate 14 produced by the quenching process is qualified, the quenching process adjusted is used to cover the quenching process before adjustment in the secondary system, and the subsequent steel plate 14 is quenched by using the adjusted quenching process.

[0029] The plate shape detector comprises a moving roller, a gantry, an imaging system and a cooling system, the steel plate 14 passes through the plate shape detector along the length direction of the moving roller, the speed of the moving roller is 1.5 m / min-24 m / min; the gantry is arranged above the moving roller and is erected along the width direction of the moving roller; the imaging system is arranged on the gantry and is used for collecting the image of the steel plate 14, and the steel plate information obtained by converting the image of the steel plate 14 collected by the imaging system and the steel plate information in the tertiary system are compared. If the judgment standard of the steel plate 14 is met, the steel plate 14 is qualified and the solidification process is continued. If the judgment standard of the steel plate 14 is not met, the steel plate 14 is unqualified, and the unqualified area and the specific defects on the steel plate 14 are automatically identified as follows: first, a partition is established on the steel plate 14, the partition area on the steel plate 14 is as follows: the head and tail of the steel plate 14 are the first area 9 and the second area 10, the two sides of the steel plate 14 are the third area 11 and the fourth area 12, and the remaining middle part is the fifth area 13; the defects existing in the unqualified area are as follows: the defects existing in the head and tail of the steel plate 14 are head warping and tail warping, the head warping of the first area 9 is defined as area one warping, the tail warping of the first area 9 is defined as area one warping, the head warping of the second area 10 is defined as area two warping, and the tail warping of the second area 10 is defined as area two warping; the defects existing in the two sides of the steel plate 14 are edge warping, which are defined as area three edge warping and area four edge warping respectively; the defects existing in the middle part of the steel plate 14 are concave and convex, which are defined as area five concave and area five convex respectively.

[0030] The cooling system is used for cooling the imaging system, the gantry is provided with support legs below, the support legs are provided with four, the four support legs are connected with the bottom of the two sides of the gantry respectively, the support legs are provided with straight ladders 17, the two ends of the gantry are provided with guardrails 19; the moving roller is provided with roller guard plates 23.

[0031] The imaging system comprises industrial cameras and lasers, the industrial cameras are provided with three groups, each group comprises three industrial cameras, the connecting direction of the nine industrial cameras is parallel to the width direction of the moving roller, the nine industrial cameras are evenly distributed above the moving roller, each group of industrial cameras can shoot the visible area of 0.5m on the length direction of the steel plate 14 (i.e. the length direction of the moving roller); the laser is a linear laser, the laser is provided with three, the direction of the center connecting line of the three lasers is parallel to the width direction of the moving roller, the three lasers are evenly distributed above the moving roller, each laser corresponds to a group of industrial cameras, each laser can emit three infrared laser lines, each industrial camera can shoot a reflected infrared laser line of the steel plate 14. Specifically, the gantry comprises a lower door frame 21, the door frame 21 is provided with inclined supports 27 to improve the structural strength, the upper part is a beam frame 18, the beam frame 18 is provided with a laser box 20 and a camera box 22, the industrial cameras are arranged in the camera box 22, the lasers are arranged in the laser box 20, the cooling pipeline 26 is laid on the beam frame 18, the beam frame 18 is also provided with a gas distribution pipe 25, the gas distribution pipe is used for controlling the opening and closing of some pneumatic valves.

[0032] The plate shape detector has a plate shape detector system, the plate shape detector detects the plate shape of the steel plate 14 and feeds back the detection result to the plate shape detector system, the plate shape detector system stores the judgment standard of whether the steel plate 14 is qualified, according to the information of the steel grade, the thickness of the steel plate, the width of the steel plate and the like sent by the three-level system, whether the plate shape of the steel plate 14 is qualified is automatically judged, the plate shape detector system stores the quenching process adjustment strategy corresponding to various unqualified plate shapes, the plate shape detector system judges which area of the steel plate 14 does not conform to what standard according to the detection condition, automatically retrieves the corresponding process adjustment strategy, and sends the adjusted process to the quenching machine two-level system. If the plate shape is qualified, the solidification process is produced.

[0033] The working principle of the quenching process adjustment strategy is that before the steel plate 14 leaves the heat treatment furnace, the heat treatment furnace sends the information of the steel plate 14, such as the steel plate number, the steel grade, the steel plate thickness, the steel plate width and the plate shape qualified standard, to the plate shape instrument detection system. After the steel plate 14 is quenched by the quenching machine, the plate shape of the steel plate 14 is automatically detected when the head of the steel plate 14 reaches the plate shape detector. After the plate shape detection is completed, the plate shape detector feeds back the detection result to the plate shape instrument detection system. According to the detection result, the plate shape instrument detection system automatically judges whether the plate shape of the steel plate 14 is qualified. If the plate shape of the steel plate 14 is qualified, the steel grade, the thickness and the width of the next steel plate 14 are automatically retrieved. If the information of the steel plate 14 is the same as that of the last qualified steel plate 14, the process is fixed, and the production is continuous. If the plate shape of the steel plate 14 is unqualified, the position of the unqualified plate shape is automatically judged, and the corresponding process adjustment strategy is automatically retrieved. At the same time, the plate shape instrument detection system sends the adjustment strategy to the quenching machine secondary system. According to the quenching model strategy given by the plate shape detector, the quenching machine secondary system automatically adjusts the flow of the cooling water of the nozzle, the roller speed of the quenching machine and other quenching process parameters. After the adjustment is completed, the plate shape of the subsequent steel plate 14 is detected by the plate shape detector. If the plate shape of the steel plate 14 is qualified, the steel plate 14 is quenched by the adjusted process. If the plate shape is unqualified, the quenching process parameters are adjusted by the quenching machine secondary system until the plate shape of the steel plate 14 is qualified. In this way, the online automatic real-time adjustment of the plate shape of the wide and heavy plate heat treatment quenching is realized. In the case that the plate shape of the previous steel plate 14 is unqualified, the subsequent steel plate 14 can use the adjusted quenching process parameters in time.

[0034] When the plate shape detector judges whether the information of the current steel plate 14 and the last steel plate 14, such as the steel grade, the width and the thickness, is consistent, if only one of the steel grade, the width and the thickness is different, the quenching machine does not adjust the quenching process, but quenches according to the corresponding process in the original database of the quenching machine secondary system.

[0035] The cooling system comprises a water cooling box 24, a cooling pipeline 26 and temperature sensors. The industrial cameras and the lasers are each provided with a temperature sensor. One end of the cooling pipeline 26 is connected with a water outlet of the water cooling box 24. The other end of the cooling pipeline 26 is connected with a water inlet of the water cooling box 24 in sequence after passing through nine industrial cameras and three lasers. A water pump is arranged in the water cooling box 24 to provide water circulation power. The industrial cameras and the lasers can be cooled through the cooling pipeline 26.

[0036] An example of unqualified plate shape process adjustment is shown in Table 1, which comprises the following steps:

[0037] (1) The steel grades of the three steel plates 14 are all NM400, the thicknesses are all 6 mm, and the widths are all 2500 mm.

[0038] (2) Steel plate 14 is subjected to shot blasting before quenching, the shot blasting roller speed is 2.0 m / min, and the shot blasting shot diameter is 1.0 mm-1.2 mm.

[0039] (3) The heating process control of the heat treatment furnace: the quenching temperature of the heat treatment furnace is 910℃, and the furnace time of the steel plate 14 is 20 min.

[0040] (4) The quenching cooling process control: the water pressure of the high-pressure section is set to 0.8 MPa, the water pressure of the low-pressure section is set to 0.4 MPa, the roller gap is set to 6.6 mm, the roller speed of the quenching machine is 12 m / min, the flow of the first nozzle 1 and the second nozzle 2 is 650 m 3 / h, the flow of the third nozzle 3 and the fourth nozzle 4 is 650 m 3 / h, the flow of the fifth nozzle 5, the sixth nozzle 6, the seventh nozzle 7 and the eighth nozzle 8 is 400 m 3 / h, and the total flow of all nozzles is 1700 m 3 / h.

[0041] (5) After the first steel plate 14 is quenched, it enters the plate shape detector, and the detection result of the first steel plate 14 by the plate shape detector is that the head is warped in region one, and the unevenness is 17 mm / 2 m. Before the head of the second steel plate 14 exits the heat treatment furnace, the heat treatment furnace sends the information of the thickness, width and length of the steel plate to the quenching machine and the plate shape detector (while checking the information sending time). The plate shape detector judges the information of the steel grade, width and thickness of the steel plate 14, the plate shape detector system adjusts the corresponding quenching process according to the detection result of the first steel plate 14, and sends the adjusted process to the quenching machine secondary system. The quenching machine secondary system automatically increases the roller speed of the quenching machine by 2% based on the existing speed, and sends the adjusted process to the quenching machine primary system, and the primary system controls the roller to speed up by 2%. The second steel plate 14 enters the quenching machine and is quenched according to the adjusted process. After the steel plate 14 is quenched, it enters the plate shape detector, and the detection result of the plate shape detector is that the head is warped in region one, and the unevenness is 8 mm / 2 m, which meets the national standard.

[0042] (6) Before the head of the third steel plate 14 exits the furnace, the heat treatment furnace sends the information of the thickness, width and length of the steel plate to the quenching machine and the plate shape detector (checks the information sending time). The plate shape detector judges the information of the steel plate 14, and because the detection result of the second steel plate 14 is qualified, the plate shape detector system does not send an adjustment command to the secondary system, and the quenching machine automatically retrieves the quenching process of the second steel plate 14 for quenching, and automatically covers the process in the original quenching machine secondary database.

[0043] Table 1: Detection results of three steel plates of Example 1

[0044]

[0045] Example 2

[0046] (1) The steel grade of the first steel plate 14 is NM360, the thickness is 8 mm, and the width is 3600 mm. The steel grade of the second steel plate 14 and the third steel plate 14 is NM400, the thickness is 10 mm, and the width is 2500 mm.

[0047] (2) Before quenching, the steel plate 14 is subjected to shot blasting treatment, the shot blasting roller speed is 2.0 m / min, and the diameter of the shot blasting shot is 1.0 mm-1.2 mm.

[0048] (3) The heating process control of the hot treatment furnace: the quenching temperature is 910℃, and the furnace time of the steel plate 14 is 30 min.

[0049] (4) The quenching cooling process control of the first steel plate 14: the water pressure of the high-pressure section is set to 0.8 MPa, the water pressure of the low-pressure section is set to 0.4 MPa, the roller gap is set to 8.8 mm, the roller speed of the quenching machine is 10 m / min, the flow rate of the first nozzle 1, the second nozzle 2, the third nozzle 3, and the fourth nozzle 4 is 760 m 3 / h, the flow rate of the fifth nozzle 5, the sixth nozzle 6, the seventh nozzle 7, and the eighth nozzle 8 is 800 m 3 / h, and the total flow rate of all nozzles is 2320 m 3 / h.

[0050] (5) After the first steel plate 14 is quenched, it enters the plate shape detector, and the plate shape detector detects that the head of the first steel plate 14 is in area one, and the unevenness is 16 mm / 2 m. Before the second steel plate 14 is discharged from the furnace, the hot treatment furnace sends the thickness, width, and length information of the steel plate 14 of the second steel plate 14 to the quenching machine and the plate shape detector system. The plate shape detector system judges that the steel grade and thickness of the second steel plate 14 are inconsistent with those of the first steel plate 14, and automatically quenches according to the corresponding process in the secondary original database of the quenching machine.

[0051] (6) The quenching cooling process control of the second steel plate 14: the water pressure of the high-pressure section is set to 0.8 MPa, the water pressure of the low-pressure section is set to 0.4 MPa, the roller gap is set to 11 mm, the roller speed of the quenching machine is 8.6 m / min, the flow rate of the first nozzle 1, the second nozzle 2, the third nozzle 3, and the fourth nozzle 4 is 800 m 3 / h, the flow rate of the fifth nozzle 5, the sixth nozzle 6, the seventh nozzle 7, and the eighth nozzle 8 is 860 m 3 / h, and the total flow rate of all nozzles is 2460 m 3 / h.

[0052] (7) the second steel plate 14 enters the plate shape detector after quenching, and the detection result of the plate shape detector is area one head, and the unevenness is 14mm / 2m. Before the head of the third steel plate 14 is discharged, the heat treatment furnace sends the information of the thickness, width and length of the third steel plate 14 to the quenching machine and the plate shape detector. The steel grade, width and thickness are all the same as those of the second steel plate, the quenching machine automatically increases the roller speed of the quenching machine by 5% on the basis of the existing speed, and the third steel plate 14 enters the plate shape detector after quenching, and the detection result of the plate shape detector is area one head, and the unevenness is 5mm / 2m, which meets the national standard.

[0053] Table 2: detection results of three steel plates of example 2

[0054]

[0055]

[0056] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0057] The above-mentioned embodiments of the present application solve the problem of batch plate shape inconsistency caused by seasonal temperature changes and unstable equipment state of the 6mm-100mm thick wide and thick plate, effectively reduce manual intervention and adjustment, greatly improve the quenching plate shape qualification rate of the steel plate, and reduce the number of steel plates that are straightened or quenched again after quenching. It can effectively improve the production efficiency and save a lot of power consumption and coal consumption cost.

[0058] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the technical solutions of the present application, and are not a limitation on the specific embodiments of the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plate shape detector for quenched steel plates, characterized by: The plate detector comprises a moving roller, a gantry and an imaging system; The moving roller is used for conveying the steel plate, the gantry is installed on the moving track and arranged along the width direction of the moving track, and the imaging system is installed on the gantry and comprises three groups of industrial cameras, which are used for collecting images of the steel plate in three regions on the left, middle and right of the moving track in real time, and each group of industrial cameras is not less than one.

2. The plate shape detector for quenched steel plates according to claim 1, characterized in that: Each group of industrial cameras is three, and the connecting direction of the three groups of industrial cameras is parallel to the width direction of the moving roller.

3. The strip shape detector for quenched steel strip as recited in claim 2, characterized in that: Each group of industrial cameras can shoot the visible area within 0.5.m in the length direction of the roller.

4. The strip shape detector for quenched steel strip as recited in claim 2, characterized by: The imaging system further comprises three lasers, the connecting direction of the three lasers is parallel to the width direction of the moving roller, each laser corresponds to a group of industrial cameras, each laser can emit three infrared laser lines, and each industrial camera can shoot one of the infrared laser lines reflected by the steel plate.

5. The strip shape detector for quenched steel strip as recited in claim 4, characterized in that: The cooling system is further provided, and the cooling system is used for cooling the imaging system.

6. The strip shape detector for quenched steel strip as recited in claim 5, characterized by: The cooling system comprises a water cooling box, a cooling pipeline and a water pump, one end of the cooling pipeline is connected with the water outlet of the water cooling box, the other end of the cooling pipeline is connected with the water inlet of the water cooling box in sequence through the industrial camera and the laser, and the water pump is arranged in the water cooling box.

7. The strip shape detector for quenched steel strip as recited in claim 6, characterized in that: The cooling system further comprises a temperature sensor and a control unit, the temperature sensor is arranged on the industrial camera and the laser, the control unit is electrically connected with the temperature sensor and the water pump, the control unit receives the temperature signal of the temperature sensor, and whether to start or stop the water pump is determined according to the preset temperature threshold.

8. The strip shape detector according to any one of claims 1 to 7, characterized in that: The gantry is provided with supporting legs below, and the supporting legs are provided with straight ladders.

9. The strip shape detector according to any one of claims 1 to 7, characterized in that: The gantry is provided with guardrails at both ends, and the moving roller is provided with roller guard plates.

Images