Phosphorus-removing hot-rolled steel bar system

Abstract

The utility model discloses a dephosphorization hot-rolled steel bar system, including dephosphorization mechanism, heating mechanism, reducing machine in proper order, dephosphorization mechanism includes first support, dephosphorization subassembly, dephosphorization subassembly installs in the top of first support, steel bar passes through dephosphorization subassembly and is dephosphorized, heating mechanism includes second support and heating subassembly, the heating assembly is arranged on the top of the second support, the dephosphorized steel bar penetrates through the heating assembly to be heated at high temperature, the steel bar heated at high temperature enters the diameter reducing machine to be subjected to diameter reducing treatment, and a tensile machine used for pulling the steel bar to move transversely is arranged at the rear end of the diameter reducing machine. The steel bar dephosphorization device not only can meet the production requirements of steel bars, but also has the advantages of no pollution and good dephosphorization effect.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar processing, in particular to a phosphorus removal hot-rolled steel bar system. Background Art

[0002] Steel bars are prone to rust after being placed for a long time, and dephosphorization is required before the subsequent production process can be carried out. There are many existing methods for dephosphorization of steel bars, including wire brush dephosphorization, pickling dephosphorization and fixed wheel dephosphorization. Although these dephosphorization methods can meet the use requirements to a certain extent, wire brush dephosphorization has the disadvantage of incomplete dephosphorization, and pickling dephosphorization has wastewater pollution. Utility Model Content

[0003] The utility model aims to provide a dephosphorization hot-rolled steel bar system, which can not only meet the production requirements of steel bars, but also has the advantages of no pollution and good dephosphorization effect.

[0004] In order to solve the above technical problems, the utility model adopts the following solutions:

[0005] A dephosphorization hot-rolled steel bar system comprises a dephosphorization mechanism, a heating mechanism and a diameter reducing machine which are arranged in sequence. The dephosphorization mechanism comprises a first bracket and a dephosphorization component, the dephosphorization component is installed on the top of the first bracket, the steel bar passes through the dephosphorization component to be dephosphorized, the heating mechanism comprises a second bracket and a heating component, the heating component is arranged on the top of the second bracket, the dephosphorized steel bar passes through the heating component to be heated at high temperature, the steel bar heated at high temperature enters the diameter reducing machine to be reduced in diameter, and a tensile machine for pulling the steel bar to move horizontally is arranged at the rear end of the diameter reducing machine.

[0006] Due to the adoption of the above technical solution, the first bracket provides a stable support structure for the dephosphorization component, the dephosphorization component is installed on the top of the first bracket, and is the component that actually performs the dephosphorization operation. The heating mechanism heats the steel bar after dephosphorization at high temperature to make it reach a temperature suitable for diameter reduction treatment. The second bracket provides support and positioning for the heating component, and the heating component is arranged on the top of the second bracket. The design and configuration of the heating component need to ensure that the steel bar can be evenly heated to avoid temperature gradients. The diameter reduction machine performs diameter reduction treatment on the steel bar after high temperature heating, changes its diameter and cross-sectional shape to meet specific usage requirements. The diameter reduction machine compresses and shapes the steel bar by mechanical force or hydraulic pressure. During the diameter reduction process, it is necessary to strictly control pressure and temperature to ensure the quality and performance of the steel bar. The tensile machine is located at the rear end of the diameter reduction machine, and is used to pull the steel bar for lateral movement to ensure the continuous flow and processing of the steel bar in the system. The tensile machine provides power through a motor, a hydraulic motor or other power source to drive the steel bar to move forward steadily in the system. At the same time, the tensile machine can also adjust the pulling speed of the steel bar as needed to meet different processing requirements. The utility model can not only meet the production requirements of steel bars, but also has the advantages of no pollution and good dephosphorization effect.

[0007] Optionally, the dephosphorization assembly includes a first fixed plate and a second fixed plate symmetrically distributed up and down, a first dephosphorization block and a second dephosphorization block are respectively provided on opposite surfaces of the first fixed plate and the second fixed plate, and a dephosphorization cavity allowing steel bars to pass through is formed between the first dephosphorization block and the second dephosphorization block.

[0008] Optionally, the second dephosphorization block is located below the first dephosphorization block, and the second dephosphorization block is embedded in the top surface of the second fixed plate. The bottom surface of the first fixed plate is provided with an installation cavity for installing the first dephosphorization block. The second dephosphorization block is arranged in the installation cavity, and the second dephosphorization block can move vertically. A spring is provided between the first dephosphorization block and the second dephosphorization block, and an adjustment screw is provided through the top of the first fixed plate for adjusting the distance between the first dephosphorization block and the second dephosphorization block.

[0009] Optionally, sliders are provided on both sides of the first dephosphorization block, and slide grooves adapted to the sliders are provided on the side walls of the installation cavity. The sliders are spaced apart along the length direction of the first dephosphorization block, and the slide grooves correspond to the sliders and extend along the height direction of the installation cavity.

[0010] Optionally, a threaded hole connected to the installation cavity is provided on the top of the first fixing plate, an adjusting screw is threadedly connected in the threaded hole, and an adjusting handle is provided on the top of the adjusting screw.

[0011] Optionally, connecting plates are provided on both sides of the first fixing plate and the second fixing plate, and the upper and lower connecting plates are connected by anchor bolts.

[0012] Optionally, the heating assembly includes an annular frame fixed to the top of the second bracket, the middle of the annular frame allows steel bars to pass through, and heating elements for heating the steel bars are distributed in a cross shape on the inner side of the annular frame.

[0013] Optionally, the heating element is a nozzle having independent gas flow channels and oxygen flow channels inside the nozzle, a gas injection port and an oxygen injection port respectively connected to the gas flow channel and the oxygen flow channel are provided at one end of the nozzle, the oxygen injection port is distributed in a ring shape around the gas injection port, and the other end of the nozzle is connected to a gas pipe connected to the gas flow channel and an oxygen pipe connected to the oxygen flow channel.

[0014] Optionally, the fuel gas flow channel is located inside the oxygen flow channel.

[0015] The utility model has the beneficial effects:

[0016] 1. In the utility model, the first bracket provides a stable support structure for the dephosphorization component. The dephosphorization component is installed on the top of the first bracket and is the component that actually performs the dephosphorization operation. The heating mechanism heats the dephosphorized steel bar at a high temperature to make it reach a temperature suitable for diameter reduction treatment. The second bracket provides support and positioning for the heating component. The heating component is arranged on the top of the second bracket. The design and configuration of the heating component must ensure that the steel bar can be heated evenly to avoid temperature gradients. The diameter reduction machine reduces the steel bar after high-temperature heating to change its diameter and cross-sectional shape to meet specific usage requirements. The utility model can not only meet the production requirements of steel bars, but also has the advantages of no pollution and good dephosphorization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the phosphorus removal component;

[0019] Figure 3 is a schematic diagram of the three-dimensional structure of the first fixing plate;

[0020] Figure 4 is a structural diagram of a first fixing plate viewed from above;

[0021] Figure 5 is a schematic diagram of the top view of the structure of the second fixing plate;

[0022] Figure 6 is a structural diagram of the heating mechanism;

[0023] Figure 7 This is a top view of the nozzle structure.

[0024] Figure markings: 1-rebar, 2-dephosphorization assembly, 3-first bracket, 4-heating assembly, 5-second bracket, 6-reducing machine, 7-tensile testing machine, 8-ring frame, 9-nozzle, 10-oxygen flow channel, 11-gas flow channel, 12-gas injection port, 13-oxygen injection port, 14-first fixed plate, 15-installation cavity, 16-adjustment handle, 17-adjustment screw, 18-first dephosphorization block, 19-dephosphorization cavity, 20-slider, 21-second fixed plate, 22-second dephosphorization block, 23-connecting plate, 24-anchor bolt, 25-spring, 26-positioning groove, 27-positioning block, 28-slide groove. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0026] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example

[0029] like Figure 1 As shown, a dephosphorization hot-rolled steel bar system includes a dephosphorization mechanism, a heating mechanism, and a diameter reducing machine 6 which are arranged in sequence. The dephosphorization mechanism includes a first bracket 3 and a dephosphorization component 2. The dephosphorization component 2 is installed on the top of the first bracket 3. The steel bar 1 passes through the dephosphorization component 2 to be dephosphorized. The heating mechanism includes a second bracket 5 and a heating component 4. The heating component 4 is arranged on the top of the second bracket 5. The dephosphorized steel bar 1 passes through the heating component 4 to be heated at high temperature. The steel bar 1 after high-temperature heating enters the diameter reducing machine 6 to be reduced in diameter. A tensile machine 7 for pulling the steel bar 1 to move horizontally is provided at the rear end of the diameter reducing machine 6.

[0030] In this embodiment, the first bracket 3 provides a stable support structure for the dephosphorization component 2. The dephosphorization component 2 is installed on the top of the first bracket 3 and is the component that actually performs the dephosphorization operation. The heating mechanism heats the dephosphorized steel bar 1 at a high temperature to make it reach a temperature suitable for diameter reduction treatment. The second bracket 5 provides support and positioning for the heating component 4. The heating component 4 is arranged on the top of the second bracket 5. The design and configuration of the heating component 4 must ensure that the steel bar 1 can be heated evenly to avoid temperature gradients. The diameter reducing machine 6 performs diameter reduction treatment on the steel bar 1 after high-temperature heating to change its diameter and cross-sectional shape to meet specific usage requirements. The diameter reducing machine 6 uses mechanical force or hydraulic pressure to reduce the steel bar 1. The steel bar 1 is compressed and shaped. During the diameter reduction process, the pressure and temperature need to be strictly controlled to ensure the quality and performance of the steel bar 1. The tensile machine 7 is located at the rear end of the diameter reduction machine 6 (existing equipment) and is used to pull the steel bar 1 for lateral movement to ensure the continuous flow and processing of the steel bar 1 in the system. The tensile machine 7 (existing equipment) is powered by a motor, a hydraulic motor or other power sources to drive the steel bar 1 to move forward steadily in the system. At the same time, the tensile machine 7 can also adjust the pulling speed of the steel bar 1 as needed to adapt to different processing requirements. The utility model can not only meet the production requirements of the steel bar 1, but also has the advantages of being pollution-free and having a good dephosphorization effect.

[0031] Furthermore, the dephosphorization assembly 2 includes a first fixed plate 14 and a second fixed plate 21 which are symmetrically distributed up and down, and a first dephosphorization block 18 and a second dephosphorization block 22 are respectively provided on the opposite surfaces of the first fixed plate 14 and the second fixed plate 21, and a dephosphorization cavity 19 allowing the steel bar 1 to pass through is formed between the first dephosphorization block 18 and the second dephosphorization block 22.

[0032] Specifically, Figure 2 As shown, the dephosphorization component 2 includes a first fixed plate 14 and a second fixed plate 21 which are symmetrically distributed up and down. This symmetrical design ensures stability and uniformity during the dephosphorization process. A first dephosphorization block 18 and a second dephosphorization block 22 are respectively provided on the opposite surfaces of the first fixed plate 14 and the second fixed plate 21. The two dephosphorization blocks are the main components for performing the dephosphorization operation. The two dephosphorization blocks can be made of sand and gravel of the same material as the grinding wheel, or sandpaper can be fixed on the opposite surfaces of the two dephosphorization blocks. A dephosphorization cavity 19 is formed between the first dephosphorization block 18 and the second dephosphorization block 22 to allow the steel bar 1 to pass through. The dephosphorization cavity 19 is the space through which the steel bar 1 passes during the dephosphorization process. After the steel bar 1 enters the dephosphorization cavity 19, its surface contacts the first dephosphorization block 18 and the second dephosphorization block 22, and the phosphide and other impurities on the surface are removed by friction and scraping. When the steel bar 1 passes through the dephosphorization chamber 19, due to the close fit and appropriate pressure of the first dephosphorization block 18 and the second dephosphorization block 22, the phosphide and other impurities on the surface of the steel bar 1 are effectively removed. This dephosphorization method belongs to physical dephosphorization, which has the advantages of simple operation, high efficiency and little environmental pollution.

[0033] Furthermore, the second dephosphorization block 22 is located below the first dephosphorization block 18, and the second dephosphorization block 22 is embedded in the top surface of the second fixed plate 21. The bottom surface of the first fixed plate 14 is provided with an installation cavity 15 for installing the first dephosphorization block 18. The second dephosphorization block 22 is arranged in the installation cavity 15, and the second dephosphorization block 22 can move vertically. A spring 25 is provided between the first dephosphorization block 18 and the second dephosphorization block 22. An adjusting screw 17 which can adjust the distance between the first dephosphorization block 18 and the second dephosphorization block 22 is penetrated through the top of the first fixed plate 14.

[0034] Specifically, Figure 2 As shown, the dephosphorization assembly 2 includes a first fixed plate 14 and a second fixed plate 21 symmetrically distributed up and down, a first dephosphorization block 18 is installed in the bottom mounting cavity 15 of the first fixed plate 14, and a second dephosphorization block 22 is embedded in the top surface of the second fixed plate 21, and the second dephosphorization block 22 is located below the first dephosphorization block 18 and can move vertically relative to the first dephosphorization block 18. This design allows the spacing between the two dephosphorization blocks to be adjusted to accommodate steel bars 1 of different diameters, and the adjustment is achieved by an adjustment screw 17 that runs through the top of the first fixed plate 14. By rotating the adjustment screw 17, the position of the first dephosphorization block 18 in the mounting cavity 15 can be changed, thereby adjusting the spacing between the two dephosphorization blocks. A spring 25 is provided between the first dephosphorization block 18 and the second dephosphorization block 22. The function of the spring 25 is to provide a certain pressure when the steel bar 1 passes through, to ensure good contact between the dephosphorization block and the steel bar 1, thereby improving the dephosphorization effect. At the same time, the spring 25 can also buffer the impact force generated when the steel bar 1 passes through, protecting the dephosphorization block from damage. When the steel bar 1 passes through the dephosphorization chamber 19, the first dephosphorization block 18 and the second dephosphorization block 22 are tightly pressed on both sides of the steel bar 1 under the action of the spring 25. The phosphide and other impurities on the surface of the steel bar 1 are removed through the friction and scraping between the dephosphorization blocks and the steel bar 1. The adjusting screw 17 can adjust the spacing between the dephosphorization blocks as needed to adapt to steel bars 1 of different diameters and ensure the stability and durability of the dephosphorization effect.

[0035] Furthermore, sliders 20 are provided on both sides of the first dephosphorization block 18, and slide grooves 28 adapted to the sliders 20 are provided on the side walls of the installation cavity 15. The sliders 20 are spaced apart along the length direction of the first dephosphorization block, and the slide grooves 28 correspond to the sliders 20 and extend along the height direction of the installation cavity 15.

[0036] Specifically, Figure 3-5As shown, sliders 20 are provided on both sides of the first dephosphorization block 18, and these sliders 20 are spaced apart along the length direction of the first dephosphorization block 18 to ensure the stable movement and precise positioning of the first dephosphorization block 18 in the installation cavity 15. The installation cavity 15 is located on the bottom surface of the first fixed plate 14 and is specially designed for the first dephosphorization block 18. The side walls of the installation cavity 15 are provided with slide grooves 28 adapted to the sliders 20. These slide grooves 28 correspond to the sliders 20 one by one and extend along the height direction of the installation cavity 15. The design of the slide grooves 28 allows the first dephosphorization block 18 to move vertically along the height direction of the installation cavity 15 when necessary. The sliders 20 and the slide grooves 28 are arranged on the side walls of the installation cavity 15. The adaptation design of 8 ensures the smooth movement of the first dephosphorization block 18 in the installation cavity 15. When the position of the first dephosphorization block 18 needs to be adjusted, the slider 20 will slide along the slide groove 28 to adjust the height of the dephosphorization block. This design allows the spacing between the first dephosphorization block 18 and the second dephosphorization block 22 to be precisely controlled by adjusting the screw 17 to adapt to steel bars 1 of different diameters and ensure the consistency and efficiency of the dephosphorization effect. The structure of the slider 20 and the slide groove 28 ensures the stability and accuracy of the dephosphorization block during movement, avoids the deviation or shaking of the dephosphorization block during the dephosphorization process, and further improves the dephosphorization effect and the stability of the system.

[0037] Furthermore, a threaded hole connected to the installation cavity 15 is provided on the top of the first fixing plate 14 , an adjusting screw 17 is threadedly connected in the threaded hole, and an adjusting handle 16 is provided on the top of the adjusting screw 17 .

[0038] Specifically, Figure 2 As shown, an adjusting handle 16 is provided at the top of the adjusting screw 17, which is convenient for the operator to manually rotate the adjusting screw 17. The threaded portion of the adjusting screw 17 matches the threaded hole at the top of the first fixing plate 14, ensuring that the adjusting screw 17 can be stably and accurately rotated and lifted along the threaded hole. A threaded hole connected to the mounting cavity 15 is provided at the top of the first fixing plate 14. This threaded hole not only connects the mounting cavity 15 and the adjusting screw 17, but also provides a rotation and lifting track for the adjusting screw 17. The design of the threaded hole ensures that the adjusting screw 17 can be stably lifted and lowered when rotating, thereby pushing the first dephosphorization block 18 in the mounting cavity 15. When the operator rotates the adjusting screw 17, the screw will move up and down along the threaded hole. Since the first dephosphorization block 18 is in contact with the adjusting screw 17, a countersunk hole adapted to the lower end of the adjusting screw 17 can be provided on the top of the first dephosphorization block 18. The lower end of the adjusting screw 17 is located in the countersunk hole, which can play a role in lateral limitation of the adjusting screw 17. Under the action of the spring 25, the first dephosphorization block 18 will move up and down with the lifting and lowering of the adjusting screw 17. In this way, the operator can accurately adjust the distance between the first dephosphorization block 18 and the second dephosphorization block 22 to adapt to steel bars 1 of different diameters.

[0039] Furthermore, connecting plates 23 are provided on both sides of the first fixing plate 14 and the second fixing plate 21 , and the upper and lower connecting plates 23 are connected by anchor bolts 24 .

[0040] Specifically, Figure 2 As shown, both sides of the first fixing plate 14 and the second fixing plate 21 are provided with connecting plates 23, which are specially designed to connect the upper and lower fixing plates. They are usually perpendicular to the fixing plates and are used to provide additional support and stability. The size, shape and material of the connecting plates 23 are carefully designed to ensure that they can withstand the operating pressure and external impact of the system while maintaining sufficient strength and rigidity. The upper and lower connecting plates 23 on the same side are connected by anchor bolts 24, which pass through the corresponding holes of the upper and lower connecting plates 23 and are fastened by tightening nuts. The selection of anchor bolts 24 should be based on actual working conditions and system The requirements are determined to ensure that its strength, corrosion resistance and service life can meet the needs of long-term operation. During the installation process, it is necessary to ensure that the tightening force of the bolts is moderate, neither too tight to cause damage to the components, nor too loose to cause loose connections. The connection method using the connecting plate 23 and the anchor bolt 24 can ensure the overall stability and rigidity of the dephosphorization component 2, and reduce the loosening or damage of the components caused by vibration or impact during the dephosphorization process. This connection method is also convenient for disassembly and maintenance. When the dephosphorization component 2 needs to be inspected or replaced, the anchor bolt 24 can be easily removed, and the upper and lower fixed plates can be separated, which is convenient for subsequent maintenance work. At the same time, a positioning block 27 and a positioning groove 26 are respectively provided on the bottom surface of the first fixed plate 14 and the top surface of the second fixed plate 21. The positioning block 27 corresponds to the positioning groove 26, and the positioning block 27 can be inserted into the positioning groove 26. When the two fixed plates are closed, the cooperation of the positioning block 27 and the positioning groove 26 makes the connection of the two fixed plates faster and more efficient.

[0041] Furthermore, the heating assembly 4 includes an annular frame 8 fixed to the top of the second bracket 5, the middle of the annular frame 8 allows the steel bar 1 to pass through, and heating elements for heating the steel bar 1 are distributed in a cross shape on the inner side of the annular frame 8 in a circumferential direction.

[0042] Furthermore, the heating element is a nozzle 9, which has a mutually independent gas flow channel 11 and oxygen flow channel 10 inside. One end of the nozzle 9 is provided with a gas injection port 12 and an oxygen injection port 13 which are respectively connected to the gas flow channel 11 and the oxygen flow channel 10. The oxygen injection port 13 is distributed in a ring shape around the gas injection port 12. The other end of the nozzle 9 is connected to a gas pipe connected to the gas flow channel 11 and an oxygen pipe connected to the oxygen flow channel 10.

[0043] Furthermore, the fuel gas flow channel 11 is located inside the oxygen flow channel 10 .

[0044] Specifically, Figure 6 and Figure 7 As shown, the core part of the heating assembly 4 is an annular frame 8 fixed to the top of the second bracket 5. A gap is left in the middle part of the annular frame 8 to allow the steel bar 1 to pass smoothly. The structure of the annular frame 8 is stable and can withstand high temperature and mechanical stress to ensure that it will not be deformed or damaged during the heating process. On the inner side of the annular frame 8, the heating elements are distributed in a circumferential cross shape. This layout ensures that the steel bar 1 can be evenly heated from multiple directions when passing through. Each heating element is a nozzle 9. These nozzles 9 are the key parts of the heating assembly 4 and are responsible for generating high-temperature flames to heat the steel bar 1. Each nozzle 9 has two independent flow channels: a gas flow channel 11 and an oxygen flow channel 10. The two flow channels are used to transport gas and oxygen respectively. A gas injection port 12 and an oxygen injection port 13 are provided at one end of the nozzle 9. The two injection ports are connected to the gas flow channel 11 and the oxygen flow channel 10 respectively. When the gas and oxygen pass through their respective flow channels and are ejected, they will mix and burn outside the nozzle 9 to produce a high-temperature flame. The oxygen injection port 13 is distributed in a ring around the gas injection port 12. This design helps to form a more stable and uniform flame and improve the heating efficiency. The gas flow channel 11 is located in the oxygen flow channel 10. This design helps to better control the mixing ratio of gas and oxygen, thereby adjusting the temperature and stability of the flame. The gas pipe and the oxygen pipe are connected to the gas flow channel 11 and the oxygen flow channel 10 of the nozzle 9 respectively, and are used to supply gas and oxygen to the nozzle 9. These pipes usually have high high temperature resistance to ensure stable operation in a high temperature environment. After the heated steel bar 1 passes through the diameter reducing machine 6, the diameter reduction efficiency is higher. At the same time, after the high-temperature heated steel bar 1 passes through the diameter reducing machine 6 to squeeze and reduce the diameter, impurities in the steel bar 1 can also be removed to improve the strength of the steel bar 1.

[0045] The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. According to the technical essence of the utility model, within the spirit and principles of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the utility model.

Claims

1. A dephosphorization hot-rolled steel bar system, characterized in that: The invention comprises a dephosphorization mechanism, a heating mechanism and a diameter reducing machine (6) which are arranged in sequence. The dephosphorization mechanism comprises a first bracket (3) and a dephosphorization component (2). The dephosphorization component (2) is installed on the top of the first bracket (3). The steel bar (1) passes through the dephosphorization component (2) to be dephosphorized. The heating mechanism comprises a second bracket (5) and a heating component (4). The heating component (4) is arranged on the top of the second bracket (5). After the dephosphorization, the steel bar (1) passes through the heating component (4) to be heated at a high temperature. After the high temperature heating, the steel bar (1) enters the diameter reducing machine (6) to be reduced in diameter. A tensile machine (7) for pulling the steel bar (1) to move horizontally is arranged at the rear end of the diameter reducing machine (6).

2. A dephosphorization hot-rolled steel bar system according to claim 1, characterized in that: The dephosphorization assembly (2) comprises a first fixing plate (14) and a second fixing plate (21) which are symmetrically distributed in an upper and lower direction; a first dephosphorization block (18) and a second dephosphorization block (22) are respectively arranged on the surfaces opposite to each other of the first fixing plate (14) and the second fixing plate (21); and a dephosphorization cavity (19) is formed between the first dephosphorization block (18) and the second dephosphorization block (22) to allow the steel bar (1) to pass through.

3. A dephosphorization hot-rolled steel bar system according to claim 2, characterized in that: The second dephosphorization block (22) is located below the first dephosphorization block (18), and the second dephosphorization block (22) is embedded in the top surface of the second fixed plate (21); the bottom surface of the first fixed plate (14) is provided with an installation cavity (15) for installing the first dephosphorization block (18); the second dephosphorization block (22) is arranged in the installation cavity (15), and the second dephosphorization block (22) can move vertically; a spring (25) is provided between the first dephosphorization block (18) and the second dephosphorization block (22); and an adjusting screw (17) is provided through the top of the first fixed plate (14) for adjusting the distance between the first dephosphorization block (18) and the second dephosphorization block (22).

4. A dephosphorization hot-rolled steel bar system according to claim 3, characterized in that: Slide blocks (20) are provided on both sides of the first dephosphorization block (18), and slide grooves (28) adapted to the slide blocks (20) are provided on the side walls of the installation cavity (15). The slide blocks (20) are spaced apart along the length direction of the first dephosphorization block, and the slide grooves (28) correspond to the slide blocks (20) and extend along the height direction of the installation cavity (15).

5. A dephosphorization hot-rolled steel bar system according to claim 3, characterized in that: A threaded hole connected to the mounting cavity (15) is provided at the top of the first fixing plate (14), an adjusting screw (17) is threadedly connected in the threaded hole, and an adjusting handle (16) is provided at the top of the adjusting screw (17).

6. A phosphorus removal hot-rolled steel bar system according to claim 2, characterized in that: Connecting plates (23) are provided on both sides of the first fixing plate (14) and the second fixing plate (21), and the upper and lower connecting plates (23) are connected by anchor bolts (24).

7. A phosphorus removal hot-rolled steel bar system according to claim 1, characterized in that: The heating assembly (4) comprises an annular frame (8) fixed to the top of the second bracket (5), the middle of the annular frame (8) allows the steel bars (1) to pass through, and heating elements for heating the steel bars (1) are distributed in a cross shape on the inner side of the annular frame (8) in the circumferential direction.

8. A phosphorus removal hot-rolled steel bar system according to claim 7, characterized in that: The heating element is a nozzle (9), the nozzle (9) having a mutually independent gas flow channel (11) and an oxygen flow channel (10) inside, one end of the nozzle (9) being provided with a gas injection port (12) and an oxygen injection port (13) respectively connected to the gas flow channel (11) and the oxygen flow channel (10), the oxygen injection port (13) being distributed in a ring shape around the gas injection port (12), and the other end of the nozzle (9) being connected to a gas pipe connected to the gas flow channel (11) and an oxygen pipe connected to the oxygen flow channel (10).

9. A dephosphorization hot-rolled steel bar system according to claim 8, characterized in that: The fuel gas flow channel (11) is located inside the oxygen flow channel (10).

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