Online cooling and transporting integrated treatment method for rolled bars

Abstract

The invention relates to the technical field of bar rolling, and discloses an online cooling and transportation integrated treatment method after bar rolling, which comprises the steps of S1, preparation stage before cooling, S2, water cooling treatment after rolling, S3, temperature equalization treatment, S4, cooling bed conveying and cooling, S5, rolled piece grouping and transferring, S6, fixed-length shearing and S7, subsequent treatment and transportation. The size of the rolled piece is accurately detected through the diameter measuring instrument (the diameter measuring error does not exceed + / -0.02 mm), it is guaranteed that the specification of the rolled piece entering the subsequent link meets the technological requirement, and the product quality is guaranteed from the source; a temperature closed-loop control system is adopted for water cooling treatment after rolling, the water amount can be automatically adjusted according to the incoming material temperature of the rolled piece and the cooling effect, it is ensured that the outlet temperature of the rolled piece is stabilized within the target range, the product performance defect caused by improper cooling is avoided, and meanwhile the manual flow control mode can be switched according to requirements to adapt to different working conditions.

Description

Technical Field

[0001] This invention relates to the field of bar rolling technology, specifically to an integrated online cooling and transportation method for bar rolling. Background Technology

[0002] In the bar rolling process, the post-rolling processing has a significant impact on product quality and production efficiency. In traditional bar rolling post-processing, cooling and transportation are often independent processes lacking coordination, which can easily lead to the following problems: During the cooling process, the lack of precise temperature control and flexible water circuit switching may lead to uneven cooling of the rolled parts, generating internal stress, affecting the mechanical properties of the product, and even causing defects such as cracks. At the same time, the waste of cooling water is also quite serious.

[0003] In the transportation process, the conveying path of the rolled pieces is not optimized enough. Rolled pieces of different specifications and with different processing requirements are prone to confusion or collision during the transportation process, which affects the surface quality and dimensional accuracy of the products.

[0004] The connection between cooling and transportation is not smooth enough, often resulting in the accumulation of rolled parts or interruption of transportation, which reduces production efficiency and increases production costs.

[0005] For different types of bars, such as steel that requires high temperature and slow cooling, and non-standard length bars, there is a lack of targeted processing procedures, making it difficult to guarantee their special quality requirements.

[0006] To address these issues, an integrated processing method that combines cooling and transportation is needed to improve product quality and production efficiency while reducing energy consumption and costs. Summary of the Invention

[0007] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an integrated online cooling and transportation method for bar stock after rolling, which has advantages such as improving product quality and production efficiency, and solves the problem of product quality disclosure.

[0008] (II) Technical Solution To achieve the above-mentioned goals of improving product quality and production efficiency, the present invention provides the following technical solution: an integrated online cooling and transportation method for bar stock after rolling, including S1 pre-cooling preparation stage, S2 post-rolling water cooling treatment, S3 temperature equalization treatment, S4 cooling bed conveying and cooling, S5 rolling stock grouping and transfer, S6 fixed-length shearing and S7 subsequent processing and transportation, wherein the S1 pre-cooling preparation stage includes S101 rolling stock size detection and S102 water cooling parameter setting; Among them, the S2 post-rolling water cooling treatment includes the S201 water cooling device start-up, the S202 cooling temperature control and the S203 bypass conveying operation. Among them, S3 temperature equalization treatment includes S301 roller conveyor temperature equalization and S302 multiple length shearing preparation; Among them, S4 cooling bed conveying and cooling includes S401 cooling bed input conveying, S402 cooling bed cooling process and S403 rolling mill end trimming; Among them, S5 rolling mill grouping and transfer includes S501 rolling mill grouping operation and S502 rolling mill transfer to the output roller table; Among them, S6 fixed-length cutting includes S601 fixed-length cutting operation and S602 cutting quality inspection; The S7 subsequent processing and transportation includes S701 preparation of rolled pieces bundling, S702 stacking and transportation of finished products, S703 special steel processing and S704 finishing line processing.

[0009] Preferably, the S101 workpiece size inspection: after the workpiece comes out of the reducing and sizing mill, it is transported by conveyor rollers to the water cooling section after rolling. The diameter measuring instruments at the finishing mill and the outlet of the reducing and sizing mill are used to inspect the size of the workpiece. The diameter measurement error does not exceed ±0.02mm, ensuring that the workpiece specifications meet the process requirements, and the data is kept for more than 6 months. S102 Water Cooling Parameter Settings: Based on the steel grade and specifications of the rolled piece, open the water tank monitoring screen on the water tank control process computer of the main control console, select the corresponding pipe diameter channel, set the working pressure of the cooling water in the post-rolling water cooling section to ~0.75MPa, and set the valve opening of the water cooling box according to the process control regulations.

[0010] Preferably, the S201 water cooling device is started by starting the water cooling box of the post-rolling water cooling section, aligning the water cooling box with the rolling line, and the rolled piece enters the water cooling box for cooling. Circular slit nozzles are used, and the cooling pipes are sleeve-type. S202 Cooling Temperature Control: During the cooling process, the cooling temperature of the rolled piece is monitored in real time through the closed-loop temperature control system of the water tank. The system automatically adjusts the water volume according to the incoming material temperature and cooling effect to ensure that the outlet temperature of the rolled piece is stable within the target range. When the temperature detection instrument fails, it can be switched to manual flow control mode. S203 Bypass Conveying Operation: If water cooling is not required, operate the moving trolley to align the bypass roller conveyor with the rolling line. The rolled piece passes through the bypass roller conveyor. The rollers of the bypass roller conveyor are driven independently with frequency conversion speed regulation. The roller material is QT700-2.

[0011] Preferably, the S301 roller conveyor for uniform temperature conveying: the water-cooled rolled workpiece is conveyed by roller conveyor, and uniform temperature is carried out during the conveying process to make the temperature of the rolled workpiece uniform. The roller conveyor speed is adjusted according to the specifications of the rolled workpiece, generally 0.83-18m / s. S302 Multiple Length Shearing Preparation: After homogenization, the rolled workpiece is transported to the No. 5 flying shear, where it is sheared in multiple lengths. The average shearing temperature of the No. 5 flying shear is ≥650℃.

[0012] Preferably, the S401 cooling bed input conveyor: the sheared rolled piece is conveyed by the cooling bed input roller conveyor, the roller is cantilevered, the angle between the roller and the horizontal plane gradually transitions from 0° to 12°, the roller inclination angle is 12° within the range of the feeding block, and after being braked by the brake plate, it enters the walking cooling bed; S402 Cooling Bed Cooling Process: The rolled piece is cooled while being moved forward on the cooling bed. A straightening plate is provided at the entrance of the cooling bed to prevent the rolled piece from collapsing or bending in the high temperature zone. The cooling bed has a heat preservation function to ensure that the rolled piece cools slowly. S403 end-aligning treatment: The ends of the rolled pieces are aligned by the end-aligning roller conveyor at the exit area of ​​the cooling bed to ensure that the ends of the rolled pieces are neat.

[0013] Preferably, the S501 rolling mill grouping operation is as follows: when the rolling mill exits the cooling bed, it is grouped by a chain conveyor according to a certain number and a certain distance, and the running speed of the chain conveyor is adjusted according to the specifications of the rolling mill. The S502 rolled pieces are transferred to the output roller conveyor: the translating trolley then lifts the rolled pieces in groups and moves them to the output roller conveyor of the cooling bed. The translating trolley has a lifting height of 0.65m and a traveling speed of 11.68-116.8m / min. The pieces are then conveyed to the cold shear by the conveyor roller conveyor.

[0014] Preferably, the S601 fixed-length shearing operation: the fixed-length baffle works with the cold shear to perform fixed-length shearing on the rolled part, with a fixed-length range of 4-12m. After the cold shearing, two abrasive wheel saws are set up, which can produce bars with special requirements for the shearing head. S602 Shearing Quality Inspection: After shearing, the ends of the round steel should be straight, without collapsed edges, nodules, misaligned blades, or burrs. The shear blade gap should be controlled between 0.3mm and 0.4mm.

[0015] Preferably, the S701 rolled steel bar bundling preparation is as follows: the fixed-length steel bar is fed into the transverse conveyor by the conveyor roller, the transverse conveyor chain moves the bar forward into the finished product bay, and after counting, it is sent to the bundling station by the roller conveyor and bundled by the automatic bundling machine. S702 Finished Product Stacking and Transportation: After the bundled steel is weighed, recorded, and tagged, it is collected by a chain conveyor and then transported to the finished product warehouse by crane.

[0016] Preferably, the S703 special steel is processed as follows: some products are directly fed into the insulated frame via a transverse conveyor and then into the finishing line for finishing; for high-temperature slow-cooling materials, after automatic bundling, they are conveyed by roller conveyors into the slow-cooling pit for storage. The slow-cooling time is determined according to the steel grade, such as 36 hours for 35CrMo, 42CrMo, and 36Mn2V, and 24 hours for other steel grades. After slow cooling, they are output and hoisted into the warehouse by crane; for non-standard length materials, they are sent by roller conveyors to the short length collection device for collection, manually bundled, and then hoisted to the finished product warehouse for stacking.

[0017] Preferably, the S704 finishing line process is as follows: the steel of fixed length that directly enters the finishing line is straightened by two rollers, chamfered by grinding wheel, and subjected to joint flaw detection before being bundled, collected, weighed, and put into storage; the unqualified materials are repaired and ground to meet the standards before being bundled, collected, and put into storage.

[0018] (III) Beneficial Effects Compared with the prior art, the present invention provides an integrated online cooling and transportation method for bar stock after rolling, which has the following beneficial effects: 1. This integrated online cooling and transportation method for bar stock after rolling improves product quality. In the pre-cooling preparation stage, the dimensions of the rolled stock are accurately measured by a diameter gauge (diameter measurement error does not exceed ±0.02mm), ensuring that the specifications of the rolled stock entering the subsequent stages meet the process requirements, thus guaranteeing product quality from the source. The post-rolling water cooling treatment adopts a closed-loop temperature control system, which can automatically adjust the water volume according to the incoming temperature of the rolled piece and the cooling effect, ensuring that the outlet temperature of the rolled piece is stable within the target range, avoiding product performance defects caused by improper cooling. At the same time, it can be switched to manual flow control mode as needed to adapt to different working conditions.

[0019] The cooling bed has a heat preservation function, which allows the rolled workpiece to cool slowly and avoids stress caused by excessive cooling. The end-splitting treatment at the cooling bed exit ensures that the ends of the rolled workpiece are neat and improves the appearance quality of the product. When cutting to length, the blade gap is controlled at 0.3mm-0.4mm to ensure that the ends of the round steel are straight, without collapsed edges or nodules after cutting, thus improving the cutting quality of the product.

[0020] 2. The integrated online cooling and transportation method for bar stock after rolling improves production efficiency. The cooling and transportation links are closely connected. The rolled stock is transferred from the water cooling section to the cooling bed, and then to the subsequent grouping, transfer, and shearing links, forming a continuous production line. This reduces the accumulation and waiting time of the rolled stock and improves the overall production rhythm. The water cooling device can quickly switch between the water cooling box and the bypass roller conveyor via a mobile trolley, adapting to the cooling requirements of different rolled pieces and avoiding production interruptions caused by equipment adjustments. The coordinated operation of the chain conveyor and the translation trolley enables the orderly grouping and transfer of rolled pieces, improving the efficiency and accuracy of rolled piece transportation and laying a good foundation for subsequent shearing and processing.

[0021] 3. The integrated online cooling and transportation method for bar stock after rolling reduces energy consumption and costs. The closed-loop temperature control system of the water tank can accurately control the cooling water volume, avoiding waste of water resources and reducing production costs. The integrated processing flow reduces equipment idleness and energy consumption in intermediate links, improves equipment utilization, and reduces energy consumption per unit product. Targeted processing procedures are adopted for different types of bars, such as slow cooling of high-temperature slow-cooling materials and special collection of non-standard length materials, which reduces the scrap rate caused by improper handling and lowers production costs.

[0022] 4. This integrated online cooling and transportation method for bar stock after rolling enhances production flexibility. It allows for flexible setting of water cooling parameters and conveying speed according to the steel grade and specifications of the rolled stock, adapting to the production needs of different products. For products requiring finishing, they can be directly fed into the finishing line via a transverse transfer table, thus diversifying the production process and enhancing the company's ability to meet different order demands. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] This invention provides a technical solution, specifically, an integrated online cooling and transportation method for bar stock after rolling, including the following methods: S1 Pre-cooling preparation stage: S101 Rolled Slab Dimension Inspection: After the rolled slab comes out of the reducing and sizing mill, it is transported by conveyor rollers to the water cooling section after rolling. The diameter measuring instruments at the finishing mill and the exit of the reducing and sizing mill are used to inspect the dimensions of the rolled slab. The diameter measurement error does not exceed ±0.02mm to ensure that the rolled slab specifications meet the process requirements. The data is kept for more than 6 months. S102 Water Cooling Parameter Settings: Based on the steel grade and specifications of the rolled piece, open the water tank monitoring screen on the water tank control process computer of the main control console, select the corresponding pipe diameter channel, set the working pressure of the cooling water in the post-rolling water cooling section to ~0.75MPa, and set the valve opening of the water cooling box according to the process control regulations. S2 post-rolling water cooling treatment: S201 Water Cooling Unit Start-up: Start the water cooling box of the post-rolling water cooling section, align the water cooling box with the rolling line, and the rolled workpiece enters the water cooling box for cooling. Circumferential slit nozzles are used, and the cooling pipes are sleeve type. S202 Cooling Temperature Control: During the cooling process, the cooling temperature of the rolled piece is monitored in real time through the closed-loop temperature control system of the water tank. The system automatically adjusts the water volume according to the incoming material temperature and cooling effect to ensure that the outlet temperature of the rolled piece is stable within the target range. When the temperature detection instrument fails, it can be switched to manual flow control mode. S203 Bypass Conveying Operation: If water cooling is not required, operate the moving trolley to align the bypass roller conveyor with the rolling line. The rolled piece passes through the bypass roller conveyor. The rollers of the bypass roller conveyor are driven independently with frequency conversion speed regulation. The roller material is QT700-2. S3 temperature equalization treatment: S301 Roller Conveying for Uniform Temperature: Water-cooled rolled pieces are conveyed by roller conveyors, and uniform temperature is achieved during the conveying process to ensure that the temperature of the rolled pieces is uniform. The roller conveying speed is adjusted according to the specifications of the rolled pieces, and is generally 0.83-18m / s. S302 Multiple Length Shearing Preparation: After homogenization, the rolled piece is transported to the No. 5 flying shear and subjected to multiple length shearing by the No. 5 flying shear. The average shearing temperature of the No. 5 flying shear is ≥650℃. S4 Cooling Bed Conveying and Cooling: S401 Cooling Bed Input Conveying: The sheared rolled pieces are conveyed by the cooling bed input roller conveyor. The rollers are cantilevered, and the angle between the rollers and the horizontal plane gradually transitions from 0° to 12°. Within the range of the feeding block, the roller inclination angle is 12°. After being braked by the brake plate, the pieces enter the walking cooling bed. S402 Cooling Bed Cooling Process: The rolled piece is cooled while being moved forward on the cooling bed. A straightening plate is provided at the entrance of the cooling bed to prevent the rolled piece from collapsing or bending in the high temperature zone. The cooling bed has a heat preservation function to ensure that the rolled piece cools slowly. S403 end trimming treatment: The ends of the rolled pieces are trimmed by the end trimming roller conveyor at the exit area of ​​the cooling bed to ensure that the ends of the rolled pieces are neat; S5 rolled pieces grouping and transfer: S501 Rolled Strut Grouping Operation: When the rolled stretches exit the cooling bed, they are grouped by a chain conveyor according to a certain number and a certain distance. The running speed of the chain conveyor is adjusted according to the specifications of the rolled stretches. The S502 rolled pieces are transferred to the output roller conveyor: the rolled pieces are then lifted in groups by a translation trolley and moved to the output roller conveyor of the cooling bed. The lifting height of the translation trolley is 0.65m and the traveling speed is 11.68-116.8m / min. The pieces are then sent to the cold shear by the conveyor roller conveyor. S6 fixed-length cutting: S601 fixed-length shearing operation: The fixed-length baffle, together with the cold shear, performs fixed-length shearing on the rolled parts. The fixed-length range is 4-12m. After the cold shearing, two abrasive wheel saws are set up to produce bars with special requirements for the shearing head. S602 Shearing Quality Inspection: After shearing, the ends of the round steel should be straight, without collapsed edges, nodules, misaligned blades, or burrs. The shear blade gap should be controlled between 0.3mm and 0.4mm. S7 Post-Processing and Transportation: S701 Rolled Steel Bar Bundling Preparation: The steel bars of fixed length are fed into the transverse conveyor by the conveyor rollers. The transverse conveyor chain moves the bars forward into the finished product bay. After counting, they are sent to the bundling station by the rollers and bundled by the automatic bundling machine. S702 Finished Product Stacking and Transportation: After the bundled steel is weighed, recorded, and tagged, it is collected by a chain conveyor and then transported to the finished product warehouse by crane for stacking. S703 Special Steel Processing: Some products are directly fed into the insulated rack via a transverse conveyor before entering the finishing line for finishing; for high-temperature slow-cooling materials, after automatic bundling, they are conveyed by roller conveyors into the slow-cooling pit for storage. The slow-cooling time is determined according to the steel grade, such as 36 hours for 35CrMo, 42CrMo, and 36Mn2V, and 24 hours for other steel grades. After slow cooling, they are output and hoisted into the warehouse by crane; for non-standard length materials, they are conveyed by roller conveyors to the short length collection device for collection, manually bundled, and then hoisted to the finished product warehouse for stacking. S704 finishing line processing: Steel of fixed length that enters the finishing line is straightened by two rollers, chamfered by grinding wheel, and subjected to joint flaw detection before being bundled, collected, weighed and put into storage; unqualified materials are repaired and ground before being bundled, collected and put into storage. Furthermore, this processing method improves product quality. In the pre-cooling preparation stage, the dimensions of the rolled piece are accurately measured by a diameter gauge (diameter measurement error does not exceed ±0.02mm), ensuring that the specifications of the rolled piece entering the subsequent stages meet the process requirements, thus guaranteeing product quality from the source. The post-rolling water cooling treatment adopts a temperature closed-loop control system, which can automatically adjust the water volume according to the incoming temperature of the rolled piece and the cooling effect, ensuring that the outlet temperature of the rolled piece is stable within the target range, avoiding product performance defects caused by improper cooling. At the same time, it can be switched to manual flow control mode as needed to adapt to different working conditions. The cooling bed has a heat preservation function, which allows the rolled workpiece to cool slowly and avoids stress caused by excessive cooling. The end-splitting treatment at the cooling bed exit ensures that the ends of the rolled workpiece are neat and improves the appearance quality of the product. When cutting to length, the blade gap is controlled at 0.3mm-0.4mm to ensure that the ends of the round steel are straight, without collapsed edges or nodules after cutting, thus improving the cutting quality of the product. Furthermore, this processing method improves production efficiency, with the cooling and transportation links closely integrated. The rolled pieces move from the water-cooling section to the cooling bed, and then to the subsequent grouping, transfer, and shearing processes, forming a continuous production line. This reduces the accumulation and waiting time of the rolled pieces and improves the overall production rhythm. The water cooling device can quickly switch between the water cooling box and the bypass roller conveyor via a mobile trolley, adapting to the cooling requirements of different rolled pieces and avoiding production interruptions caused by equipment adjustments. The coordinated operation of the chain conveyor and the translation trolley enables the orderly grouping and transfer of rolled pieces, improving the efficiency and accuracy of rolled piece transportation and laying a good foundation for subsequent shearing and processing. Furthermore, this treatment method reduces energy consumption and costs. The closed-loop temperature control system of the water tank can accurately control the cooling water volume, avoiding waste of water resources and reducing production costs. The integrated processing flow reduces equipment idleness and energy consumption in intermediate links, improves equipment utilization, and reduces energy consumption per unit product. Targeted processing procedures are adopted for different types of bars, such as slow cooling of high-temperature slow-cooling materials and special collection of non-standard length materials, which reduces the scrap rate caused by improper handling and lowers production costs. Furthermore, this processing method enhances production flexibility, allowing for flexible setting of water cooling parameters and conveying speed according to the steel grade and specifications of the rolled pieces, adapting to the production needs of different products. For products requiring finishing, they can be directly fed into the finishing line via a transverse transfer table, achieving diversification of the production process and enhancing the company's ability to meet different order demands.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated online cooling and transportation method for bar stock after rolling, comprising S1 pre-cooling preparation stage, S2 post-rolling water cooling treatment, S3 temperature equalization treatment, S4 cooling bed conveying and cooling, S5 rolled stock grouping and transfer, S6 fixed-length shearing, and S7 subsequent processing and transportation, characterized in that: The S1 pre-cooling preparation stage includes S101 workpiece size inspection and S102 water cooling parameter setting; Among them, the S2 post-rolling water cooling treatment includes the S201 water cooling device start-up, the S202 cooling temperature control and the S203 bypass conveying operation. Among them, S3 temperature equalization treatment includes S301 roller conveyor temperature equalization and S302 multiple length shearing preparation; Among them, S4 cooling bed conveying and cooling includes S401 cooling bed input conveying, S402 cooling bed cooling process and S403 rolling mill end trimming; Among them, S5 rolling mill grouping and transfer includes S501 rolling mill grouping operation and S502 rolling mill transfer to the output roller table; Among them, S6 fixed-length cutting includes S601 fixed-length cutting operation and S602 cutting quality inspection. The S7 subsequent processing and transportation includes S701 preparation of rolled pieces bundling, S702 stacking and transportation of finished products, S703 special steel processing and S704 finishing line processing.

2. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The S101 workpiece size inspection: After the workpiece comes out of the sizing and reducing mill, it is transported to the water cooling section after rolling via conveyor rollers. The diameter measuring instruments at the finishing mill and the exit of the sizing and reducing mill measure the size of the workpiece. The diameter measurement error does not exceed ±0.02mm to ensure that the workpiece specifications meet the process requirements. The data is kept for more than 6 months. S102 Water Cooling Parameter Settings: Based on the steel grade and specifications of the rolled piece, open the water tank monitoring screen on the water tank control process computer of the main control console, select the corresponding pipe diameter channel, set the working pressure of the cooling water in the post-rolling water cooling section to ~0.75MPa, and set the valve opening of the water cooling box according to the process control regulations.

3. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The S201 water cooling device is started: the water cooling box of the post-rolling water cooling section is started, the water cooling box is aligned with the rolling line, the rolled workpiece enters the water cooling box for cooling, and the circumferential nozzle is used, and the cooling pipe is a sleeve type. S202 Cooling Temperature Control: During the cooling process, the cooling temperature of the rolled piece is monitored in real time through the closed-loop temperature control system of the water tank. The system automatically adjusts the water volume according to the incoming material temperature and cooling effect to ensure that the outlet temperature of the rolled piece is stable within the target range. When the temperature detection instrument fails, it can be switched to manual flow control mode. S203 Bypass Conveying Operation: If water cooling is not required, operate the moving trolley to align the bypass roller conveyor with the rolling line. The rolled piece passes through the bypass roller conveyor. The rollers of the bypass roller conveyor are driven independently with frequency conversion speed regulation. The roller material is QT700-2.

4. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The S301 roller conveyor for uniform temperature conveying: the water-cooled rolled pieces are conveyed by roller conveyors, and uniform temperature is achieved during the conveying process to ensure that the temperature of the rolled pieces is uniform. The roller conveyor speed is adjusted according to the specifications of the rolled pieces, and is generally 0.83-18m / s. S302 Multiple Length Shearing Preparation: After homogenization, the rolled piece is transported to the No. 5 flying shear, where it is sheared in multiple lengths. The average shearing temperature of the No. 5 flying shear is ≥650℃.

5. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The S401 cooling bed input conveyor: the sheared rolled piece is conveyed by the cooling bed input roller conveyor. The rollers are cantilevered, and the angle between the rollers and the horizontal plane gradually transitions from 0° to 12°. Within the range of the feeding block, the roller inclination angle of the roller conveyor is 12°. After being braked by the brake plate, it enters the walking cooling bed. S402 Cooling Bed Cooling Process: The rolled piece is cooled while being moved forward on the cooling bed. A straightening plate is provided at the entrance of the cooling bed to prevent the rolled piece from collapsing or bending in the high temperature zone. The cooling bed has a heat preservation function to ensure that the rolled piece cools slowly. S403 end-aligning treatment: The ends of the rolled pieces are aligned by the end-aligning roller conveyor at the exit area of ​​the cooling bed to ensure that the ends of the rolled pieces are neat.

6. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The S501 rolling mill grouping operation: When the rolling mill exits the cooling bed, it is grouped by a chain conveyor according to a certain number and a certain distance. The running speed of the chain conveyor is adjusted according to the specifications of the rolling mill. The S502 rolled pieces are transferred to the output roller conveyor: the translating trolley then lifts the rolled pieces in groups and moves them to the output roller conveyor of the cooling bed. The translating trolley has a lifting height of 0.65m and a traveling speed of 11.68-116.8m / min. The pieces are then conveyed to the cold shear by the conveyor roller conveyor.

7. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The S601 fixed-length shearing operation: the fixed-length baffle, together with the cold shear, performs fixed-length shearing on the rolled parts, with a fixed-length range of 4-12m. After the cold shearing, two abrasive wheel saws are set up to produce bars with special requirements for the shearing head. S602 Shearing Quality Inspection: After shearing, the ends of the round steel should be straight, without collapsed edges, nodules, misaligned blades, or burrs. The shear blade gap should be controlled between 0.3mm and 0.4mm.

8. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The S701 rolled steel bar bundling preparation: the fixed length steel bar is fed into the transverse conveyor by the conveyor roller, the transverse conveyor chain moves the bar bar forward into the finished product bay, and after counting, it is sent to the bundling station by the roller conveyor and bundled by the automatic bundling machine. S702 Finished Product Stacking and Transportation: After the bundled steel is weighed, recorded, and tagged, it is collected by a chain conveyor and then transported to the finished product warehouse by crane.

9. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The processing of S703 special steel is as follows: some products are directly fed into the insulated rack via a transverse conveyor and then into the finishing line for finishing; for high-temperature slow-cooling materials, after automatic bundling, they are conveyed by roller conveyor into the slow-cooling pit for storage. The slow-cooling time is determined according to the steel grade, such as 36 hours for 35CrMo, 42CrMo, and 36Mn2V, and 24 hours for other steel grades. After slow cooling, they are output and hoisted into the warehouse by crane; for non-standard length materials, they are sent to the short length collection device by roller conveyor, manually bundled, and then hoisted to the finished product warehouse for stacking.

10. The integrated online cooling and transportation method for bar stock after rolling according to claim 1, characterized in that: The S704 finishing line processes the following: steel of fixed length that directly enters the finishing line is straightened by two rollers, chamfered by grinding wheels, and subjected to joint flaw detection before being bundled, collected, weighed, and put into storage; unqualified materials are repaired and ground to meet the standards before being bundled, collected, and put into storage.