Steel billet dephosphorization device
By setting four phosphorus roller devices at the exit of the billet connection machine, the tip and the surface of the steel billet are used to contact the crushing iron oxide skin, which solves the problem of difficulty removing the iron oxide skin after the billet. Surface quality.
Patent Information
- Application Number
- CN202420263926.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-03
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-02-03
AI Technical Summary
After continuous casting of steel billets, the lack of phosphorus removal device causes the iron oxide on the surface of the steel billet to be effectively removed, which affects the subsequent rolling process and leads to defects in the surface quality of the finished steel.
Design a kind of billet removal device, including the four phosphorus roller devices of the upper, lower, left, and right in the exit of the billet exit of the continuous casting machine. Each roller device is driven by supporting triangle, pulling spring columns, and chain sprocket mechanisms. Elementary phosphorus roller is composed, and the surface of the tip and the surface of the billet is crushed.
The efficient removal of four -faced iron oxide skin of the billet is achieved, the phosphorus removal effect is improved, the risk of iron oxide skin is pressed into the finished product during the subsequent rolling process, and the surface quality of the finished steel is improved.
Smart Images
Figure CN222402814U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to dephosphorization of steel billets in steelmaking plants and steel rolling mills, in particular to a steel billet dephosphorization device. Background Art
[0002] During steel smelting production, the continuous casting billet is cooled from high temperature to low temperature during the steelmaking process, which causes iron oxide scale (phosphorus scale) to form on the surface of the billet during the continuous oxidation process. The iron oxide scale structure (phosphorus scale) is not easy to fall off.
[0003] However, the original continuous casting billet production area does not have a billet dephosphorization device, which results in the billet being sent to the heating furnace before the oxide scale is removed when it is subsequently heated for rolling. After being sent to the heating furnace, oxide scale will be generated again, causing the surface oxide scale of the billet to increase again. As a result, the thickness of the oxide scale on the surface of the billet increases again.
[0004] When leaving the heating furnace, although there is a water dephosphorization device to remove the iron oxide scale, the original thick iron oxide scale will seriously affect the effect of water dephosphorization. Therefore, during the subsequent rolling of the billet, some of the iron oxide scale that has not been completely removed will be pressed into the finished steel, eventually causing defects in the surface quality of the bars and steel sections. Therefore, it is necessary to add a dephosphorization device (iron oxide removal) after the continuous casting of the billet to remove the iron oxide scale brought by the corresponding process production. Summary of the invention
[0005] The utility model aims at the defects of the prior art and provides a steel billet dephosphorization device, which is used for dephosphorization after continuous casting of steel billets and has good dephosphorization effect.
[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme, including a dephosphorization roller device arranged at the billet outlet of the continuous casting machine (i.e. after the billet is continuously cast); the dephosphorization roller device includes four parts: an upper dephosphorization roller device located above the billet leaving the machine, a lower dephosphorization roller device located below the billet leaving the machine, a left dephosphorization roller device located on the left side of the billet leaving the machine, and a right dephosphorization roller device located on the right side of the billet leaving the machine.
[0007] The left dephosphorization roller device and the right dephosphorization roller device have the same structure and are arranged in a mirror image relative to the steel billet leaving the machine; both include: a horizontally arranged supporting tripod fixed to the side of the lower dephosphorization roller device, the top of the supporting tripod is hinged to a vertical frame through a swing shaft, a vertical dephosphorization roller is hinged on the vertical frame, and the vertical dephosphorization roller is in contact with the steel billet leaving the machine; the vertical dephosphorization roller is driven to rotate by a chain sprocket mechanism.
[0008] A vertical tension spring column is arranged on the supporting tripod, the tension spring column is connected to the frame via a tension spring, and a stop column for limiting the swing position of the frame is arranged on the supporting tripod and between the tension spring column and the frame.
[0009] Furthermore, the upper dephosphorization roller device includes a mounting seat installed on the top of the billet outlet side of the continuous casting machine, and the mounting seat is hinged to an upper dephosphorization roller through a swing arm; the upper dephosphorization roller has a plurality of upper dephosphorization tips on its periphery.
[0010] Furthermore, one end of the swing arm is hinged to the mounting seat via a mounting shaft, and the upper dephosphorization roller shaft of the upper dephosphorization roller is rotatably connected to the other end of the swing arm.
[0011] Furthermore, the upper dephosphorization tip of the upper dephosphorization roller is in contact with the steel billet leaving the machine.
[0012] Furthermore, the lower dephosphorization roller device includes a conveyor line frame fixed to the bottom of the billet outlet side of the continuous casting machine, and a plurality of lower dephosphorization rollers are installed inside the conveyor line frame, and the plurality of lower dephosphorization rollers are rotatably connected to the conveyor line frame through respective lower dephosphorization roller shafts; and a plurality of lower dephosphorization roller tips are arranged on the periphery of each lower dephosphorization roller.
[0013] Furthermore, the tip of the lower dephosphorization roller of the lower dephosphorization roller is in contact with the steel billet leaving the machine.
[0014] Furthermore, the supporting tripod is a right-angle tripod, and one right-angle side of the right-angle tripod is welded to the outside of the conveyor line frame; the tension spring column is arranged on the hypotenuse of the right-angle tripod, the swing shaft is rotatably connected to the other right-angle side of the right-angle tripod away from one end of the conveyor line frame, and the bottom of the barrier column is welded to the other right-angle side of the right-angle tripod close to one end of the conveyor line frame.
[0015] Furthermore, one end of the tension spring is connected to the top of the tension spring column, and the other end of the tension spring is connected to the stand.
[0016] Furthermore, the stand comprises an upper vertical plate, a lower vertical plate, and a baffle plate sandwiched between the upper and lower vertical plates, the swing shaft passes through the lower vertical plate and the upper vertical plate, and a shoulder is provided at the bottom of the swing shaft, and the lower vertical plate is located on the shoulder; and the stand can rotate relative to the swing shaft; the end of the tension spring is connected to the baffle plate.
[0017] Furthermore, the chain and sprocket mechanism includes a chain and sprocket assembly installed on the top of the upper vertical plate, and the chain and sprocket assembly is driven to rotate by a motor.
[0018] Specifically, the chain sprocket assembly includes a driving sprocket, a passive sprocket, and a chain connected to the two sprockets. The sprocket shaft of the driving sprocket is driven to rotate by a motor, and the passive sprocket is installed outside the vertical dephosphorization roller. The motor drives the driving sprocket to rotate, and the chain drives the passive sprocket to rotate, thereby driving the vertical dephosphorization roller to rotate, thereby achieving dephosphorization of the steel billet.
[0019] Compared with the prior art, the utility model has beneficial effects.
[0020] The utility model adopts the method of arranging the dephosphorization devices on the four surfaces of the steel billet, so that the dephosphorization work on the four surfaces of the steel billet can be realized at the same time, and the dephosphorization is carried out in a through-type manner, so the efficiency is high.
[0021] The dephosphorization device of the utility model adopts the tip portion arranged on the dephosphorization roller to crush the oxide scale on the surface of the steel billet to remove the phosphorus, and the dephosphorization effect is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the utility model is not limited to the following descriptions.
[0023] Figure 1 The three-dimensional image of the steel billet dephosphorization device in the embodiment Figure 1 ;
[0024] Figure 2 The three-dimensional image of the steel billet dephosphorization device in the embodiment Figure 2 ;
[0025] Figure 3 1. is a top view of a steel billet dephosphorization device in an embodiment;
[0026] Figure 4 1 is a left view of the steel billet dephosphorization device in the embodiment;
[0027] Figure 5 This is a front view of the lower dephosphorization roller of the steel billet dephosphorization device in the embodiment.
[0028] In the figure, 1 is the billet outlet of the continuous casting machine, 2 is the upper dephosphorization roller device, 3 is the right dephosphorization roller device, 4 is the left dephosphorization roller device, 5 is the lower dephosphorization roller device, 6 is the billet, and 7 is the continuous casting machine;
[0029] 201 is a mounting seat, 202 is a mounting shaft, 203 is a swing arm, 204 is an upper dephosphorization roller, 205 is an upper dephosphorization roller shaft, and 206 is an upper dephosphorization tip;
[0030] 401 is a supporting tripod, 402 is a tension spring column, 403 is a stop column, 404 is a swing shaft, 405 is a vertical dephosphorization roller, 406 is a chain sprocket mechanism, 407 is a baffle, 408 is a motor, 409 is an upper plate, 410 is a lower plate, 411 is a stand, and 412 is a tension spring;
[0031] 501 is a conveyor line frame, 502 is a lower dephosphorization roller shaft, 503 is a lower dephosphorization roller, and 504 is a lower dephosphorization roller tip. DETAILED DESCRIPTION
[0032] like Figure 1-5As shown, the dephosphorization device of the embodiment includes: a dephosphorization roller device arranged at the outlet of the continuous casting machine billet; the dephosphorization roller device includes four parts: an upper dephosphorization roller device located above the billet discharged from the machine, a lower dephosphorization roller device located below the billet discharged from the machine, a left dephosphorization roller device located on the left side of the billet discharged from the machine, and a right dephosphorization roller device located on the right side of the billet discharged from the machine; the left dephosphorization roller device and the right dephosphorization roller device have the same structure and are mirror-imaged relative to the billet discharged from the machine; both include: a horizontally arranged supporting tripod fixed to the side of the lower dephosphorization roller device, the top of the supporting tripod is hinged to a vertical frame through a swing shaft, a vertical dephosphorization roller is hinged on the vertical frame, and the vertical dephosphorization roller is in contact with the billet discharged from the machine; the vertical dephosphorization roller is driven to rotate by a chain sprocket mechanism; a vertical tension spring column is arranged on the supporting tripod, the tension spring column and the vertical frame are connected by a tension spring, and a stop column for limiting the swing position of the vertical frame is arranged on the supporting tripod and between the tension spring column and the vertical frame.
[0033] Specifically, the upper dephosphorization roller device is used to clean the oxidized iron scale on the top of the steel billet leaving the machine, the lower dephosphorization roller device is used to clean the oxidized iron scale on the bottom of the steel billet leaving the machine, the left dephosphorization roller device is used to clean the left side of the steel billet leaving the machine, and the right dephosphorization roller device is used to clean the right side of the steel billet leaving the machine.
[0034] The preferred solution of the upper dephosphorization roller device: specifically includes a mounting seat installed on the top of the billet outlet side of the continuous casting machine, the mounting seat is hinged to an upper dephosphorization roller through a swing arm; the upper dephosphorization roller has a plurality of upper dephosphorization tips, i.e., upper dephosphorization tips, on the outer periphery. Specifically, the mounting seat is fixed to the billet outlet side of the continuous casting machine by fasteners. One end of the swing arm is hinged to the mounting seat through a mounting shaft, and the upper dephosphorization roller shaft of the upper dephosphorization roller is rotatably connected to the other end of the swing arm. The upper dephosphorization tip of the upper dephosphorization roller contacts the billet leaving the machine.
[0035] The preferred scheme of the lower dephosphorization roller device: the lower dephosphorization roller device comprises a conveyor frame fixed to the bottom of the billet outlet side of the continuous casting machine, a plurality of lower dephosphorization rollers are installed inside the conveyor frame, and the plurality of lower dephosphorization rollers are rotatably connected to the conveyor frame through their respective lower dephosphorization roller shafts; and a plurality of lower dephosphorization roller tips (i.e., lower dephosphorization tips) are arranged on the periphery of each lower dephosphorization roller. The lower dephosphorization roller tips of the lower dephosphorization rollers are in contact with the billet leaving the machine.
[0036] Optimal solution for left and right dephosphorization roller devices.
[0037] 1. The supporting tripod is a right-angled tripod, and one of the right-angled sides of the right-angled tripod is welded to the outside of the conveyor frame; the tension spring column is set on the hypotenuse of the right-angled tripod, and the swing shaft is rotatably connected to the other right-angled side of the right-angled tripod away from the end of the conveyor frame, and the bottom of the baffle column is welded to the other right-angled side of the right-angled tripod close to the end of the conveyor frame. One end of the tension spring is connected to the top of the tension spring column, and the other end of the tension spring is connected to the stand. The stand includes an upper plate, a lower plate, and a baffle sandwiched between the upper and lower plates. The swing shaft passes through the lower plate and the upper plate, and a shaft shoulder is set at the bottom of the swing shaft, and the lower plate is located on the shaft shoulder; and the stand can rotate relative to the swing shaft; the end of the tension spring is connected to the baffle.
[0038] 2. The chain sprocket mechanism includes a chain sprocket assembly installed on the top of the upper vertical plate, and the chain sprocket assembly is driven to rotate by a motor. The chain sprocket assembly includes a driving sprocket, a passive sprocket, and a chain connected to the two sprockets. The sprocket shaft of the driving sprocket is driven to rotate by the motor, and the passive sprocket is installed outside the vertical dephosphorization roller. The motor drives the driving sprocket to rotate, and the chain drives the passive sprocket to rotate, which in turn drives the vertical dephosphorization roller to rotate, thereby realizing the dephosphorization of the steel billet.
[0039] Working process and operation steps.
[0040] When the billet is conveyed out from the billet outlet of the continuous casting machine, it passes through the dephosphorization device.
[0041] The upper part of the steel billet will touch the upper dephosphorization roller of the upper dephosphorization roller device, so that the upper dephosphorization roller contacts the upper surface of the steel billet, specifically, the tip of the upper dephosphorization roller contacts the upper surface of the steel billet. Due to the relatively large weight of the upper dephosphorization roller, it will continue to press on the upper surface of the steel billet during the conveying process of the steel billet and give the steel billet a downward pressure. Due to the friction between the contacts, the upper dephosphorization roller rotates during the continuous conveying of the steel billet, crushing the iron oxide scale on the upper surface of the steel billet and separating it from the surface of the steel billet, thereby dephosphorizing the upper surface of the steel billet.
[0042] During the conveying process, the left and right parts of the steel billet will touch the dephosphorization rollers of the left and right dephosphorization roller devices. The forward force of the steel billet causes the dephosphorization rollers of the left and right dephosphorization roller devices to rotate outward at a certain angle about their respective swing axes (so that the tension spring is stretched). Since the tension spring always has a reset tension, the dephosphorization rollers of the left and right dephosphorization roller devices are pressed on the left and right surfaces of the steel billet with a certain pressure. Due to the friction between the contact surfaces, the dephosphorization rollers rotate during the continuous conveying of the steel billet, crushing the iron oxide scale on the left and right surfaces of the steel billet and separating it from the surface of the steel billet, thereby dephosphorizing the upper surface of the steel billet.
[0043] The surfaces of the dephosphorization rollers of the left dephosphorization roller device and the right dephosphorization roller device are also provided with spikes (points) to destroy the iron oxide layer on the surface of the steel billet.
[0044] The left dephosphorization roller device and the right dephosphorization roller device are each provided with a baffle plate, which is used to block the lower vertical plate and control the rotation angle of the swing shaft.
[0045] The left dephosphorization roller device and the right dephosphorization roller device are provided with a motor and a chain sprocket mechanism. The motor is used to drive the dephosphorization roller. By controlling the rotation speed and rotation direction of the dephosphorization roller, the friction mode with the surface of the steel billet is changed, thereby achieving a better dephosphorization effect.
[0046] During the conveying process, the lower part of the steel billet touches the lower phosphorus roller device, and the steel billet is tightly pressed on the lower dephosphorization roller by its own weight. The steel billet drives the lower dephosphorization roller to rotate as it moves forward. During the rotation, the tip of the lower dephosphorization roller crushes the iron oxide scale on the upper surface of the steel billet and separates it from the surface of the steel billet, thereby dephosphorizing the upper surface of the steel billet.
[0047] The setting method of the upper dephosphorization roller device can realize the dephosphorization of steel billets with different specifications. The setting method of the left dephosphorization roller device and the right dephosphorization roller device can realize the dephosphorization of steel billets with different specifications (adapting to steel billets of different widths by adjusting the elongation size of the tension spring).
[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. Therefore, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope defined by the claims of the present invention.
Claims
1. A steel billet dephosphorization device, comprising a dephosphorization roller device arranged at a steel billet outlet of a continuous casting machine; characterized in that: The dephosphorization roller device comprises four parts: an upper dephosphorization roller device located above the outgoing steel billet, a lower dephosphorization roller device located below the outgoing steel billet, a left dephosphorization roller device located on the left side of the outgoing steel billet, and a right dephosphorization roller device located on the right side of the outgoing steel billet; The left dephosphorization roller device and the right dephosphorization roller device have the same structure and are mirror-imaged relative to the steel billet discharged from the machine; both of them include: a horizontally arranged supporting tripod fixed to the side of the lower dephosphorization roller device, the top of the supporting tripod is hinged to a vertical frame through a swing shaft, a vertical dephosphorization roller is hinged to the vertical frame, and the vertical dephosphorization roller is in contact with the steel billet discharged from the machine; the vertical dephosphorization roller is driven to rotate by a chain sprocket mechanism; A vertical tension spring column is arranged on the supporting tripod, the tension spring column is connected to the frame via a tension spring, and a stop column for limiting the swing position of the frame is arranged on the supporting tripod and between the tension spring column and the frame.
2. A steel billet dephosphorization device according to claim 1, characterized in that: The upper dephosphorization roller device comprises a mounting seat mounted on the top of the billet outlet side of the continuous casting machine, the mounting seat is hinged to an upper dephosphorization roller through a swing arm; the upper dephosphorization roller has a plurality of upper dephosphorization tips on its periphery.
3. A steel billet dephosphorization device according to claim 2, characterized in that: One end of the swing arm is hinged to the mounting seat through a mounting shaft, and the upper dephosphorization roller shaft of the upper dephosphorization roller is rotatably connected to the other end of the swing arm.
4. A steel billet dephosphorization device according to claim 2, characterized in that: The upper dephosphorization tip of the upper dephosphorization roller is in contact with the steel billet leaving the machine.
5. The steel billet dephosphorization device according to claim 1, characterized in that: The lower dephosphorization roller device includes a conveyor line frame fixed to the bottom of the billet outlet side of the continuous casting machine, and multiple lower dephosphorization rollers are installed inside the conveyor line frame, and the multiple lower dephosphorization rollers are rotatably connected to the conveyor line frame through their own lower dephosphorization roller shafts; and multiple lower dephosphorization roller tips are arranged on the periphery of each lower dephosphorization roller.
6. A steel billet dephosphorization device according to claim 1, characterized in that: The tip of the lower dephosphorization roller of the lower dephosphorization roller is in contact with the steel billet leaving the machine.
7. A steel billet dephosphorization device according to claim 5, characterized in that: The supporting tripod is a right-angle tripod, and one right-angle side of the right-angle tripod is welded to the outside of the conveyor line frame; the tension spring column is arranged on the hypotenuse of the right-angle tripod, the swing shaft is rotatably connected to the other right-angle side of the right-angle tripod away from the end of the conveyor line frame, and the bottom of the blocking column is welded to the other right-angle side of the right-angle tripod close to the end of the conveyor line frame.
8. A steel billet dephosphorization device according to claim 7, characterized in that: One end of the tension spring is connected to the top of the tension spring column, and the other end of the tension spring is connected to the stand.
9. A steel billet dephosphorization device according to claim 7, characterized in that: The stand comprises an upper plate, a lower plate, and a baffle plate sandwiched between the upper and lower plates; the swing shaft passes through the lower plate and the upper plate, and a shoulder is provided at the bottom of the swing shaft, and the lower plate is located on the shoulder; the stand can rotate relative to the swing shaft; and the end of the tension spring is connected to the baffle plate.
10. A steel billet dephosphorization device according to claim 9, characterized in that: The chain sprocket mechanism comprises a chain sprocket assembly installed on the top of the upper vertical plate, and the chain sprocket assembly is driven to rotate by a motor.