A billet surface defect repair device and its repair process

Abstract

The present invention discloses a device for repairing surface defects of steel billets and a repair process thereof, comprising a slide rail and an induction heating machine, two sets of propulsion devices are arranged above the slide rail, a fixing device is arranged above the propulsion device, the fixing device comprises a clamping structure and a lifting structure, the lifting structure is located on the propulsion device, and an induction heating machine and an induction coil are arranged between the propulsion devices. The device for repairing surface defects of steel billets and a repair process thereof described in the present invention belong to the technical field of surface repair of steel billets, so that the induction coil heats the steel billet, the surface quality is good, the yield rate is high, and the work efficiency is high, the steel billet is moved to a suitable position or heated while moving by the propulsion device, so as to obtain a better repair effect, no manual work is required to push the steel billet, which is relatively time-saving and labor-saving, and has low labor intensity, and the steel billet in a molten state can be repaired, so as to ensure a perfect fit between them, and the surface quality is better.

Description

Technical Field

[0001] The invention relates to the technical field of steel billet surface repair, and in particular to a steel billet surface defect repairing device and a repairing process thereof. Background Art

[0002] In order to prevent the surface defects of steel billets from continuing to expand and eliminate the impact of surface defects of steel billets on the surface quality of hot-rolled coils, it is required to inspect and process the slabs before hot rolling, which can effectively reduce the surface defects of hot-rolled coils and improve the quality of hot-rolled coils. Surface defects of steel billets often occur during continuous casting, and the usual method to improve such defects is grinding. However, there are certain disadvantages in the existing surface repair of steel billets. First, in order to protect the equipment, the grinding machine needs to wait until the steel billet cools to a certain temperature before grinding, which affects efficiency; secondly, grinding is a removal process that reduces the yield rate, has low work efficiency and high labor intensity; finally, the surface of the steel billet is rough after grinding, which affects the surface quality of the steel plate after hot rolling. For some special steels, due to the fluctuation of steelmaking and continuous casting parameters, the steel billet structure is uneven, and defects are easily generated on the surface of the plate after hot rolling, such as residual and unevenly distributed high-temperature ferrite in the steel billet, which is easy to produce peeling defects after hot rolling. Summary of the invention

[0003] The main purpose of the present invention is to provide a steel billet surface defect repairing device and its repairing process, which can effectively solve the problem in the background technology that in order to protect the equipment, the grinding machine needs to wait until the steel billet is cooled to a certain temperature before grinding, which affects the efficiency; secondly, grinding is a removal process, which reduces the yield rate, has low work efficiency and high labor intensity; finally, the surface of the steel billet is rough after grinding, which affects the surface quality of the steel plate after hot rolling. For some special steels, due to the fluctuations in steelmaking and continuous casting process parameters, the steel billet structure is uneven, and defects are easily generated on the plate surface after hot rolling, such as residual high-temperature ferrite in the steel billet and uneven distribution, which is easy to produce peeling defects after hot rolling.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A steel billet surface defect repair device and a repair process thereof, comprising a slide rail and an induction heating machine, wherein two sets of propulsion devices are arranged above the slide rail, a moving wheel is arranged at the bottom end of the propulsion device, a fixing device is arranged above the propulsion device, the fixing device comprises a clamping structure and a lifting structure, the lifting structure is located on the propulsion device, and an induction heating machine and an induction coil are arranged between the propulsion devices.

[0006] Preferably, the clamping structure includes a clamping seat, a knob, a movable clamping block, a transmission gear, a transmission groove, a fastening nut, a toothed groove, and a fixed clamping plate. The clamping seat is provided with a movable clamping block and a fixed clamping plate. A transmission groove is arranged inside the movable clamping block. A set of transmission gears is arranged inside the transmission groove. A knob is arranged on one of the transmission gears. A fastening nut is arranged on the knob. Toothed grooves are arranged on both sides of the movable clamping block on the clamping seat.

[0007] Preferably, the knob penetrates through the movable clamping block and is fixed to the transmission gear. The transmission gear meshes with the toothed groove. The movable clamping block is slidably connected to the clamping seat. The fastening nut is fixed to the movable clamping block.

[0008] Preferably, the lifting structure includes a lifting plate, a fixing plate, an adjusting stud, and an adjusting nut. The propulsion device is provided with a fixing plate. A lifting plate is arranged above the fixing plate. An adjusting stud is arranged between the lifting plate and the fixing plate. Two adjusting nuts are arranged on the adjusting stud. The adjusting nuts are located between the lifting plate and the fixing plate. The adjusting stud penetrates through the lifting plate and the fixing plate and is screwed to the propulsion device.

[0009] Preferably, the propulsion device includes a sliding seat, a threaded rod, a motor, a sliding block, and a sliding groove. A sliding groove is arranged on the surface of the sliding seat. A threaded rod is arranged inside the sliding groove. A motor is arranged at one end of the threaded rod. A fixing device is arranged on the threaded rod inside the sliding groove. A sliding block is arranged at the bottom end of the fixing device.

[0010] Preferably, the sliding block is slidably connected to the sliding groove. The threaded rod is connected to the sliding block by a thread. The motor is installed on the side wall of the sliding seat.

[0011] Preferably, a moving wheel is arranged at the bottom end of the propulsion device. A position sensor is arranged on the slide rail. A magnetic block matched with the position sensor is arranged at the bottom end of the propulsion device. And the position sensor is attracted to the magnetic block of the propulsion device. The induction coil is attached to the surface of the steel billet.

[0012] A repair process of a steel billet surface defect repair device includes the following steps:

[0013] S1. Prepare the required materials in advance, prepare the steel billet to be repaired, and then conduct preliminary debugging of the equipment to meet the operating conditions.

[0014] S2. Place the steel billet between the induction coils. Put the steel billet into the induction heating machine through the fixing device and the propulsion device, so that the steel billet penetrates through the induction coil.

[0015] S3, using induction heating and high-frequency vibration to repair the steel billet, the steel billet is induction heated by an induction coil so that the surface of the steel billet is heated to a certain temperature, and the steel billet is shaken by a vibrator so that the surface is smooth after heating;

[0016] S4, taking out the steel billet to inspect the repair status, inspecting whether the repaired steel billet meets the requirements, ensuring that the repaired steel billet can be used, and finally transporting it to the steel billet stacking place;

[0017] S5. After processing the steel billet, you can shut down the equipment, turn off the induction heating machine, and remove the propulsion device.

[0018] Preferably, in S3, the steel billet is hoisted to a transport rail car, the scarred part is pushed to the induction coil by a propulsion device, the induction heating machine is turned on, and when the surface of the steel billet is about to melt, the vibrator is turned on, and the vibrator and the induction heating machine are turned off for 1-5 minutes, the steel billet is pushed out by a propulsion device, and finally transported to the steel billet stack.

[0019] Preferably, the steel billet in S3 is an abnormal billet in the continuous casting process, and the steel billet is hoisted to the transport rail car, and the vibrator and induction heating machine are turned on at the same time. The steel billet is passed through the induction coil at a speed of 1-2 m / min by the propulsion device. After passing through, the vibrator and induction heating machine are turned off, and the steel billet is pushed out by the propulsion device, and finally transported to the steel billet stack.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] A fixing device is provided, and the steel billet can be fixed by a clamping structure, so that the steel billet can be fixed, and it is suitable for fixing steel billets of different thicknesses, which is more practical. The position of the steel billet can be adjusted by a lifting structure, so that the steel billet is located in the position of the induction coil, so that the induction coil heats the steel billet, with good surface quality, high yield rate and high work efficiency;

[0022] A propulsion device is provided, through which the steel billet is moved to a suitable position or heated while moving, so as to obtain a better repair effect. There is no need for manual pushing of the steel billet, which is time-saving, labor-saving and low in labor intensity.

[0023] Induction heating and high-frequency vibration are used to repair the steel billet. The steel billet is repaired at high temperature. The steel billet in a molten state can be repaired to ensure a perfect fit and better surface quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2It is the front view of the present invention;

[0026] Figure 3 It is a schematic diagram of the fixing device of the present invention;

[0027] Figure 4 It is a schematic diagram of the lifting structure of the present invention;

[0028] Figure 5 It is the present invention Figure 4 Enlarged view of part A;

[0029] Figure 6 It is a schematic diagram of the propulsion device of the present invention.

[0030] In the figure: 1, fixing device; 110, clamping structure; 111, clamping seat; 112, knob; 113, movable clamping block; 114, transmission gear; 115, transmission groove; 116, fastening nut; 117, tooth-shaped groove; 118, fixed clamping plate; 120, lifting structure; 121, lifting plate; 122, fixed plate; 123, adjusting stud; 124, adjusting nut; 2, propulsion device; 201, sliding seat; 202, threaded rod; 203, motor; 204, sliding block; 205, sliding groove; 3, transporting rail vehicle; 4, slide rail; 5, vibrator; 6, induction heating machine; 7, induction coil; 8, moving wheel; 9, position sensor. Specific embodiments

[0031] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0032] As Figure 1-6 shown, a billet surface defect repair device and its repair process include a slide rail 4 and an induction heating machine 6. Two groups of propulsion devices 2 are arranged above the slide rail 4. Moving wheels 8 are arranged at the bottom ends of the propulsion devices 2. A fixing device 1 is arranged above the propulsion devices 2. The fixing device 1 includes a clamping structure 110 and a lifting structure 120. The lifting structure 120 is located on the propulsion devices 2. An induction heating machine 6 and an induction coil 7 are arranged between the propulsion devices 2.

[0033] In this embodiment, the clamping structure 110 includes a clamping seat 111, a knob 112, a movable clamping block 113, a transmission gear 114, a transmission groove 115, a fastening nut 116, a toothed groove 117 and a fixed clamping plate 118. The clamping seat 111 is provided with a movable clamping block 113 and a fixed clamping plate 118. The movable clamping block 113 is provided with a transmission groove 115 inside. A group of transmission gears 114 are provided inside the transmission groove 115. A knob 112 is provided on the transmission gear 114, a fastening nut 116 is provided on the knob 112, and toothed grooves 117 are provided on both sides of the movable clamping block 113 on the clamping seat 111; the knob 112 passes through the movable clamping block 113 and is fixed to the transmission gear 114, the transmission gear 114 is meshed with the toothed groove 117, the movable clamping block 113 is slidably connected to the clamping seat 111, and the fastening nut 116 is fixed to the movable clamping block 113.

[0034] In this embodiment, the lifting structure 120 includes a lifting plate 121, a fixed plate 122, an adjusting stud 123 and an adjusting nut 124. The propulsion device 2 is provided with a fixed plate 122, and a lifting plate 121 is provided above the fixed plate 122. An adjusting stud 123 is provided between the lifting plate 121 and the fixed plate 122, and two adjusting nuts 124 are provided on the adjusting stud 123. The adjusting nut 124 is located between the lifting plate 121 and the fixed plate 122. The adjusting stud 123 passes through the lifting plate 121 and the fixed plate 122 and is screwed with the propulsion device 2. The steel billet can be fixed by the clamping structure 110, so that the steel billet can be fixed, and it is suitable for fixing steel billets of different thicknesses. It is more practical, and the position of the steel billet can be adjusted by the lifting structure 120, so that the steel billet is located in the position of the induction coil 7, so that the induction coil 7 heats the steel billet, and the surface quality is good, the yield rate is high, and the working efficiency is high.

[0035] In this embodiment, the propulsion device 2 includes a sliding seat 201, a threaded rod 202, a motor 203, a sliding block 204 and a sliding groove 205. The sliding groove 205 is arranged on the surface of the sliding seat 201, and the threaded rod 202 is arranged inside the sliding groove 205. The motor 203 is arranged at one end of the threaded rod 202. The interior of the sliding groove 205 is provided with a fixing device 1 located on the threaded rod 202, and the bottom end of the fixing device 1 is provided with a sliding block 204; the sliding block 204 is slidably connected to the sliding groove 205, the threaded rod 202 is connected to the sliding block 204 through a thread, and the motor 203 is installed on the side wall of the sliding seat 201. The steel billet is moved to a suitable position or heated while moving by the propulsion device 2, so as to obtain a better repair effect, and there is no need to manually push the steel billet, which is more time-saving and labor-saving, and has low labor intensity.

[0036] Preferably, a moving wheel 8 is provided at the bottom end of the propulsion device 2, a position sensor 9 is provided on the slide rail 4, a magnetic block cooperating with the position sensor 9 is provided at the bottom end of the propulsion device 2, and the position sensor 9 is attracted to the magnetic block of the propulsion device 2, and the induction coil 7 is attached to the surface of the billet.

[0037] A repair process for a surface defect repair device of a steel billet includes the following steps:

[0038] S1. Prepare the required materials in advance, prepare the steel billet to be repaired, and then conduct preliminary debugging of the equipment to meet the operating conditions.

[0039] S2. Place the steel billet between the induction coils 7, and place the steel billet at the induction heating machine 6 through the fixing device 1 and the propulsion device 2, so that the steel billet passes through the induction coil 7.

[0040] S3. Repair the steel billet by induction heating and high-frequency vibration. The steel billet is inductively heated through the induction coil 7, so that the surface of the steel billet is heated to a certain temperature, and the steel billet is shaken by the vibrator 5 to make the surface smooth after heating.

[0041] S4. Take out the steel billet to detect the repair situation, detect whether the repaired steel billet meets the requirements, ensure that all the repaired steel billets can be used, and finally transport them to the steel billet stacking area.

[0042] S5. After processing the steel billet, the equipment can be shut down, the induction heating machine 6 can be shut down, and the propulsion device 2 can be removed.

[0043] Preferably, in S3, the steel billet is hoisted to the transport rail car 3, the scarred part is pushed to the induction coil 7 through the propulsion device 2, the induction heating machine 6 is started, the vibrator 5 is started when the surface of the steel billet is about to melt, the vibrator 5 and the induction heating machine 6 are turned off after 1 - 5 minutes, the steel billet is pushed out through the propulsion device 2, and finally transported to the steel billet stacking area.

[0044] Preferably, in S3, the steel billet is a continuous casting process parameter abnormal billet. The steel billet is hoisted to the transport rail car 3, the vibrator 5 and the induction heating machine 6 are started simultaneously, the steel billet passes through the induction coil 7 at a speed of 1 - 2 m / min through the propulsion device 2, the vibrator 5 and the induction heating machine 6 are turned off after passing through, the steel billet is pushed out through the propulsion device 2, and finally transported to the steel billet stacking area. The steel billet can be repaired at high temperature, and the molten steel billet can be repaired to ensure a tight fit and better surface quality.

[0045] It should be noted that the present invention is a device for repairing surface defects of a steel billet and a repair process thereof. The required materials are prepared in advance, the steel billet to be repaired is prepared, and then the equipment is preliminarily debugged so as to meet the conditions for operation. The steel billet is placed between the induction coils 7, and the steel billet is placed in the induction heating machine 6 through the fixing device 1 and the pushing device 2. Specifically, since the adjusting nut 124 is located between the lifting plate 121 and the fixing plate 122, the adjusting stud 123 penetrates the lifting plate 121 and the fixing plate 122 and is screwed together with the pushing device 2, the lifting plate 121 is lifted and lowered, and the adjusting screw The column 123 is screwed with the adjusting nut 124 to fix the lifting plate 121 on the fixed plate 122 to make the height appropriate, and then the steel billet is placed between the movable clamping block 113 and the fixed clamping plate 118. By turning the knob 112, the transmission gear 114 and the toothed groove 117 are transmitted, so that the movable clamping block 113 is lifted and lowered and the steel billet is clamped, so that the clamping structure 110 and the lifting structure 120 fix the steel billet, with good surface quality, high yield rate and high work efficiency. The motor 203 of the propulsion device 2 is started, so that the motor 203 drives the threaded rod 202 in the sliding groove 205 to rotate , so that the sliding block 204 in the sliding groove 205 is transmitted with the threaded rod 202, so that the fixing device 1 can be moved, and the billet can be lifted to the transport rail car 3. Since the sliding block 204 is provided at the bottom of the fixing device 1; the sliding block 204 is slidably connected with the sliding groove 205, and the threaded rod 202 is connected with the sliding block 204 through a thread, the scarred part is pushed to the induction coil 7 by the propulsion device 2, and the induction heating machine 6 is turned on. When the surface of the billet is about to melt, the vibrator 5 is turned on, and the vibrator 5 and the induction heating machine 6 are turned off for 1-5 minutes, and the billet is pushed out by the propulsion device 2. The billet is The continuous casting worker picks up an abnormal billet, lifts it to the transport rail car 3, turns on the vibrator 5 and the induction heater 6 at the same time, and uses the propulsion device 2 to make the billet pass through the induction coil 7 at a speed of 1-2 m / min. After passing through, turn off the vibrator 5 and the induction heater 6, push the billet out through the propulsion device 2, and finally transport it to the billet stack so that the billet passes through the induction coil 7. The billet is induction heated by the induction coil 7 so that the surface of the billet is heated to a certain temperature. The billet is shaken by the vibrator 5 so that the surface is smoother after heating. Then the induction heater 6 is turned off and the propulsion device 2 is removed.

[0046] Although illustrative embodiments of the present invention have been described herein with reference to the accompanying drawings, as long as they do not violate the spirit of the present invention, they should also be regarded as the contents disclosed by the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for repairing surface defects of steel billets, characterized in that: It includes a slide rail (4) and an induction heating machine (6). Above the slide rail (4), there are two groups of propulsion devices (2). At the bottom of the propulsion device (2), there are moving wheels (8). Above the propulsion device (2), there is a fixing device (1). The fixing device (1) includes a clamping structure (110) and a lifting structure (120). The lifting structure (120) is located on the propulsion device (2). Between the propulsion devices (2), there are the induction heating machine (6) and the induction coil (7); The clamping structure (110) includes a clamping seat (111), a knob (112), a movable clamping block (113), a transmission gear (114), a transmission slot (115), a fastening nut (116), a toothed slot (117), and a fixed clamping plate (118). On the clamping seat (111), there are the movable clamping block (113) and the fixed clamping plate (118). Inside the movable clamping block (113), there is the transmission slot (115). Inside the transmission slot (115), there is a set of transmission gears (114). On one of the transmission gears (114), there is the knob (112). On the knob (112), there is the fastening nut (116). On both sides of the movable clamping block (113) on the clamping seat (111), there are the toothed slots (117); The knob (112) passes through the movable clamping block (113) and is fixed to the transmission gear (114). The transmission gear (114) meshes with the toothed slot (117). The movable clamping block (113) is slidably connected to the clamping seat (111). The fastening nut (116) is fixed to the movable clamping block (113); The lifting structure (120) includes a lifting plate (121), a fixing plate (122), an adjusting stud (123), and an adjusting nut (124). On the propulsion device (2), there is the fixing plate (122). Above the fixing plate (122), there is the lifting plate (121). Between the lifting plate (121) and the fixing plate (122), there is the adjusting stud (123). On the adjusting stud (123), there are two adjusting nuts (124). The adjusting nuts (124) are located between the lifting plate (121) and the fixing plate (122). The adjusting stud (123) passes through the lifting plate (121) and the fixing plate (122) and is screwed with the propulsion device (2); The propulsion device (2) comprises a sliding seat (201), a threaded rod (202), a motor (203), a sliding block (204) and a sliding groove (205); the sliding groove (205) is arranged on the surface of the sliding seat (201); the threaded rod (202) is arranged inside the sliding groove (205); the motor (203) is arranged at one end of the threaded rod (202); the fixing device (1) is arranged inside the sliding groove (205) on the threaded rod (202); and the sliding block (204) is arranged at the bottom end of the fixing device (1).

2. The surface defect repair device for steel billets according to claim 1, characterized in that: The sliding block (204) is slidably connected to the sliding groove (205), the threaded rod (202) is connected to the sliding block (204) via threads, and the motor (203) is mounted on a side wall of the sliding seat (201).

3. The surface defect repair device for steel billets according to claim 2, characterized in that: A moving wheel (8) is arranged at the bottom end of the propulsion device (2), a position sensor (9) is arranged on the slide rail (4), a magnetic block matching the position sensor (9) is arranged at the bottom end of the propulsion device (2), and the position sensor (9) is attracted to the magnetic block of the propulsion device (2), and the induction coil (7) is attached to the surface of the steel billet.

4. Repair process of a repair device for surface defects of steel billets, which is repaired by using a repair device for surface defects of steel billets as described in claim 3, characterized in that: The following steps are involved: S1. Prepare the required materials in advance, prepare the steel billets to be repaired, and then conduct preliminary debugging of the equipment to meet the conditions for operation; S2, placing the steel billet between the induction coils (7), and placing the steel billet into the induction heating machine (6) through the fixing device (1) and the pushing device (2), so that the steel billet passes through the induction coils (7); S3, using induction heating and high-frequency vibration to repair the steel billet, the steel billet is induction heated by an induction coil (7) so that the surface of the steel billet is heated to a certain temperature, and the steel billet is shaken by a vibrator (5) so that the surface is smooth after heating; S4, take out the steel billet to inspect the repair status, inspect whether the repaired steel billet meets the requirements, ensure that the repaired steel billet can be used, and finally transport it to the steel billet stacking place; S5. After processing the steel billet, the equipment can be turned off, the induction heating machine (6) can be turned off, and the propulsion device (2) can be removed.

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