Integrated process for heating, rolling and finishing of alloy steel

Abstract

The present application relates to steel processing technical field, and disclose alloy steel production in heating, rolling and finishing integrated process, including the following specific process steps: S1 raw material pretreatment, S2 heating temperature and time accurate control, S3 quality monitoring in heating process, S4 rolling process, S5 finishing process, S6 surface treatment and quality inspection and S7 cutting, packaging and identification: wherein, S4 rolling process includes S401 preparation before rolling, S402 rolling process control and S403 rolling quality detection and feedback;Wherein, S5 finishing process includes S501 cooling and straightening, the process guarantees the quality of raw materials: the process improves product quality, raw material quality guarantee: in the raw material pretreatment stage, the size is detected by using high-precision laser measuring instrument, the internal defects are checked by industrial endoscope, the targeted repair measures are taken for different depth surface defects, the defects are effectively avoided to expand in subsequent processing, the blank quality is ensured from the source, and a solid foundation is laid for producing high-quality alloy steel.

Description

Technical Field

[0001] This invention relates to the field of steel processing technology, specifically to an integrated process for heating, rolling and finishing in the production of alloy steel. Background Technology

[0002] With the rapid development of modern industry, various fields have placed extremely stringent requirements on the performance and quality of alloy steel. In the aerospace field, alloy steel is required to possess high strength and low density to reduce aircraft weight and improve safety; in the automotive manufacturing industry, to achieve energy conservation and emission reduction, the demand for high-strength, lightweight, and easily formable alloy steel is increasing; in the construction field, facing complex building structures and harsh operating environments, high-quality alloy steel has become crucial to ensuring building safety and durability.

[0003] Traditional alloy steel production processes suffer from numerous limitations. In the raw material pretreatment stage, insufficient precision in inspection methods makes it difficult to detect minute internal defects in the billet, leading to their amplification during subsequent processing and impacting product quality. During heating, temperature and time control are rudimentary, resulting in low heating efficiency, high energy consumption, and a susceptibility to oxidation and decarburization in the billet. In the rolling process, poor equipment precision and stability make it difficult to guarantee dimensional accuracy and surface quality, and the delayed detection of internal defects fails to meet the demands of high-quality production. Finishing processes are also outdated, with ineffective cooling and straightening, and limited surface treatment and quality inspection methods, resulting in final product quality that fails to meet high-end market demands. These problems severely restrict the development of the alloy steel industry, urgently requiring an innovative, integrated production process to address them. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an integrated process for heating, rolling, and finishing in the production of alloy steel. This process offers advantages such as ensuring the quality of raw materials and solves the problem of lacking effective handling measures for abnormal situations during the production process, which can easily lead to overheating of steel billets, wasting energy, and reducing product quality.

[0005] (II) Technical Solution To achieve the aforementioned goal of ensuring raw material quality, this invention provides the following technical solution: an integrated process for heating, rolling, and finishing in alloy steel production, comprising the following specific process steps: S1 raw material pretreatment, S2 precise control of heating temperature and time, S3 quality monitoring during heating, S4 rolling process, S5 finishing process, S6 surface treatment and quality inspection, and S7 cutting, packaging, and labeling. The S4 rolling process includes S401 pre-rolling preparation, S402 rolling process control, and S403 rolling quality inspection and feedback. The S5 finishing process includes S501 cooling and straightening. S1 raw material pretreatment: Before heating, a comprehensive inspection of the billet's dimensions, weight, appearance, and surface quality is conducted. Dimensions are measured using a high-precision laser measuring instrument with an accuracy of ±0.05mm, and internal defects are inspected using an industrial endoscope. For billets with minor surface defects, if the defect depth is within 0.5mm, mechanical grinding is used for repair; if the defect depth is between 0.5 and 1mm, chemical treatment is used for repair to prevent the defects from expanding during subsequent heating and rolling processes. S2 heating temperature and time are precisely controlled: Based on the material, size, and production plan of the billet, an intelligent control system is used to precisely set the heating temperature and time. In the preheating stage, for cold billets, the temperature is first slowly increased to 500-600℃ with a power of 50-80kW, and the heating rate is controlled at 5-8℃ / min, and then the heating power is gradually increased. Hot-charged billets can skip the preheating stage or shorten the preheating time to 30%-50% of the original. In the high-temperature section, the temperature fluctuation range is strictly controlled within ±15℃. Multi-point temperature monitoring technology is used to collect temperature data every 3-5 minutes. Once an abnormal temperature is detected, the power of the heating element is adjusted immediately. Quality monitoring during the S3 heating process: During the heating process, an infrared thermal imager is used to monitor the temperature distribution on the surface of the billet in real time, and a full scan is performed every 10-15 minutes. During this process, the surface of the billet should be checked every 2-3 hours for oxidation and decarburization defects. If the thickness of the iron oxide scale exceeds 0.1mm, the atmosphere in the heating furnace should be adjusted in time, such as controlling the oxygen content at 2%-3% and adding an appropriate amount of nitrogen as a protective gas to reduce the generation of defects. S6 Surface Treatment and Quality Inspection: A comprehensive quality inspection of the product surface is conducted. For products with minor surface defects, if the defect depth is within 0.2mm, they are repaired by grinding and polishing. For products with severe surface defects, they are marked and isolated. When using pickling for surface treatment, the acid concentration should be controlled between 15% and 20%, and the pickling time should be between 10 and 20 minutes. When using shot peening, the shot peening intensity should be controlled between 0.2 and 0.3 N / mm² to ensure that the surface treatment effect meets the quality requirements. S7 Cutting, Packaging and Labeling: According to the product specifications, high-precision cutting equipment is used. For example, when cutting with an abrasive wheel saw, the cutting size accuracy is controlled within ±1mm; when cutting with a flame cutter, the cutting kerf width is controlled within 3-5mm. During the cutting process, strict control is exercised over the cutting dimensions to ensure that the product length meets quality standards. After cutting, the ends of the products undergo end treatment, with the chamfer angle controlled between 30 and 45°, and the surface roughness after deburring controlled between Ra3.2 and Ra6.3 μm. Qualified products are then packaged and labeled. When using steel strapping, the steel strap thickness is 0.8-1.2 mm; when using plastic film packaging, the film thickness is 0.05-0.1 mm. The packaging includes information such as product specifications, model, batch number, and production date, facilitating product traceability and management.

[0006] Preferably, the S2 heating temperature and time are precisely controlled. By optimizing the structure of the heating furnace and the combustion system, the heating efficiency can be increased by 20% - 30%, the heating time can be shortened by 30 - 60 minutes, and energy consumption can be reduced by 15% - 20%.

[0007] Preferably, the S401 pre-rolling preparation includes: a comprehensive inspection and maintenance of the rolling mill, guides, and roller conveyor equipment. A roll profile measuring instrument is used to detect the wear condition of the rolls; when the wear depth on the roll surface exceeds 0.15mm, the roll is replaced promptly. Simultaneously, the guide device is precisely adjusted to ensure that the billet deviation during rolling is controlled within ±1mm, avoiding deviation and scratches.

[0008] Preferably, the S402 rolling process is controlled as follows: Based on the characteristics of the billet and the product specifications, reasonable rolling process parameters should be formulated. The rolling speed should be controlled between 2-5 m / s, the reduction should be adjusted between 5-15 mm according to different rolling stages, and the tension should be controlled between 50-100 kN. During the rolling process, the automatic thickness control system (AGC) of the rolling mill automatically adjusts the gap between the rolls according to the actual thickness changes of the billet, ensuring that the thickness accuracy of the product is controlled within ±0.1mm. During the rolling process, the high-pressure water descaling system is activated, with the water pressure controlled at 15-20 MPa. The nozzles and manifolds of the descaling system are checked regularly, and clogged nozzles are cleaned every 8 hours, while leaking manifolds are replaced weekly.

[0009] Preferably, the S403 rolling quality inspection and feedback: During the rolling process, online dimensional inspection equipment, such as laser diameter gauges, is used to monitor the dimensional changes of the product in real time. The measurement accuracy can reach ±0.08mm. Once the dimensional deviation is found to exceed the allowable range, the rolling parameters are immediately adjusted for correction. During the rolling process, a surface defect detection system, such as a machine vision inspection system, is used to monitor the product surface in real time at a rate of 5-10 frames per second. For internal quality, an ultrasonic flaw detector and a magnetic particle flaw detector are used for random inspection every 2-3 hours to ensure that there are no cracks or inclusions inside the product. The quality inspection data is fed back to the production control system in real time so that the rolling process parameters can be optimized and adjusted.

[0010] Preferably, the S501 cooling and straightening: According to the material and specifications of the product, select the appropriate cooling method. For alloy steel, the cooling rate is controlled at 10-15℃ / min when air cooling is used; when water cooling is used, the water temperature is controlled at 20-30℃, and the cooling time is adjusted between 10-30 minutes according to the product specifications. Use a multi-roller straightener to straighten the product. The pressure of the straightening rollers is adjusted between 5-10kN according to the curvature and material characteristics of the product. After straightening, the curvature of the product is controlled to be no more than 3mm per meter. During the cooling and straightening process, online detection equipment is used to monitor the straightening effect in real time, and products that fail to meet the straightening requirements are straightened a second time.

[0011] (III) Beneficial Effects Compared with the prior art, the present invention provides an integrated process for heating, rolling and finishing in the production of alloy steel, which has the following beneficial effects: 1. The integrated heating, rolling, and finishing process in the production of this alloy steel ensures the quality of raw materials. This process improves product quality and ensures the quality of raw materials: In the raw material pretreatment stage, a high-precision laser measuring instrument (accuracy up to ±0.05mm) is used to detect dimensions, and an industrial endoscope is used to inspect internal defects. Targeted repair measures are taken for surface defects of different depths to effectively prevent defects from expanding in subsequent processing. This ensures the quality of billets from the source and lays a solid foundation for the production of high-quality alloy steel. Heating quality control: The heating temperature and time are precisely set through an intelligent control system. During the preheating stage, cold-filled and hot-filled billets are treated differently. In the high-temperature section, the temperature fluctuation is strictly controlled within ±15℃. Multi-point temperature monitoring technology is used to collect temperature data every 3-5 minutes. Combined with an infrared thermal imager, the surface temperature distribution of the billet is monitored in real time. Surface defects are checked every 2-3 hours and the heating furnace atmosphere is adjusted in time. This greatly reduces defects such as oxidation and decarburization, ensures uniform and stable heating quality of the billet, and improves the internal quality of the product. Rolling accuracy and quality monitoring: Before rolling, the equipment is thoroughly inspected and maintained, and the guide device is precisely adjusted to ensure that the billet deviation is controlled within ±1mm. During the rolling process, parameters such as rolling speed, reduction, and tension are set reasonably. The automatic thickness control system (AGC) ensures that the product thickness accuracy is within ±0.1mm. The high-pressure water descaling system is turned on to ensure surface quality. At the same time, online dimensional detection equipment (measurement accuracy up to ±0.08mm) and surface defect detection system are used for real-time monitoring, as well as regular internal quality spot checks, to comprehensively ensure the dimensional accuracy and surface and internal quality of the product, significantly improving the consistency and reliability of product quality.

[0012] 2. The integrated heating, rolling and finishing process in the production of this alloy steel improves production efficiency and heating efficiency: by optimizing the structure of the heating furnace and the combustion system, the heating efficiency is increased by 20% - 30%, the heating time is shortened by 30 - 60 minutes, the production cycle is reduced, the output per unit time is increased, and thus the overall production efficiency is improved. Integrated process collaboration: The heating, rolling and finishing processes are closely integrated, and information is transmitted and fed back in real time between each link, reducing waiting time and human intervention in intermediate links, making the production process smooth and efficient, and greatly improving production efficiency; Reduced production costs and energy consumption: Through precise control and equipment optimization, the heating process reduces energy consumption by 15% - 20%, saving energy costs; Reduce scrap rate: Through strict quality control throughout the entire process, scrap caused by quality problems is effectively reduced, and waste of raw materials, energy and labor is reduced, thereby reducing production costs. Detailed Implementation

[0013] 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.

[0014] This invention provides a technical solution, specifically: an integrated process for heating, rolling, and finishing in the production of alloy steel, comprising the following specific process steps: S1 raw material pretreatment: Before heating, a comprehensive inspection of the billet's dimensions, weight, appearance, and surface quality is conducted. Dimensions are measured using a high-precision laser measuring instrument with an accuracy of ±0.05mm, and internal defects are inspected using an industrial endoscope. For billets with minor surface defects, if the defect depth is within 0.5mm, mechanical grinding is used for repair; if the defect depth is between 0.5 and 1mm, chemical treatment is used for repair to prevent the defects from expanding during subsequent heating and rolling processes. S2 heating temperature and time are precisely controlled: Based on the material, size, and production plan of the billet, an intelligent control system is used to precisely set the heating temperature and time. In the preheating stage, for cold billets, the temperature is first slowly increased to 500-600℃ with a power of 50-80kW, and the heating rate is controlled at 5-8℃ / min, and then the heating power is gradually increased. Hot-charged billets can skip the preheating stage or shorten the preheating time to 30%-50% of the original. In the high-temperature section, the temperature fluctuation range is strictly controlled within ±15℃. Multi-point temperature monitoring technology is used to collect temperature data every 3-5 minutes. Once an abnormal temperature is detected, the power of the heating element is adjusted immediately. The S2 heating temperature and time are precisely controlled. By optimizing the structure of the heating furnace and the combustion system, heating efficiency can be increased by 20% - 30%, heating time can be shortened by 30 - 60 minutes, and energy consumption can be reduced by 15% - 20%. Quality monitoring during the S3 heating process: During the heating process, an infrared thermal imager is used to monitor the temperature distribution on the surface of the billet in real time, and a full scan is performed every 10-15 minutes. During this process, the billet surface should be checked every 2-3 hours for defects such as oxidation and decarburization. If the iron oxide scale thickness exceeds 0.1mm, the atmosphere in the heating furnace should be adjusted in time, such as controlling the oxygen content at 2%-3% and adding an appropriate amount of nitrogen as a protective gas to reduce the generation of defects. S4 rolling process: Preparation before rolling S401: A comprehensive inspection and maintenance of equipment such as rolling mills, guides, and roller conveyors is conducted. Roll wear is detected using a roll profile measuring instrument; rolls are replaced promptly when the wear depth exceeds 0.15mm. Simultaneously, the guide devices are precisely adjusted to ensure that the billet deviation during rolling is controlled within ±1mm, preventing problems such as deviation and scratches. S402 Rolling Process Control: Based on the characteristics of the billet and the product specifications, reasonable rolling process parameters should be formulated. The rolling speed should be controlled between 2-5 m / s, the reduction should be adjusted between 5-15 mm according to different rolling stages, and the tension should be controlled between 50-100 kN. During the rolling process, the automatic thickness control system (AGC) of the rolling mill automatically adjusts the gap between the rolls according to the actual thickness changes of the billet, ensuring that the thickness accuracy of the product is controlled within ±0.1mm. During the rolling process, the high-pressure water descaling system is turned on, and the water pressure is controlled at 15-20MPa. The nozzles and manifolds of the descaling system are checked regularly, the clogged nozzles are cleaned every 8 hours, and the leaking manifolds are replaced weekly. S403 Rolling Quality Inspection and Feedback: During the rolling process, online dimensional inspection equipment, such as a laser diameter gauge, is used to monitor the dimensional changes of the product in real time. The measurement accuracy can reach ±0.08mm. Once the dimensional deviation is found to exceed the allowable range, the rolling parameters are immediately adjusted for correction. During the rolling process, a surface defect detection system, such as a machine vision inspection system, is used to monitor the product surface in real time at a rate of 5-10 frames per second. For internal quality, an ultrasonic flaw detector and a magnetic particle flaw detector are used for random inspection every 2-3 hours to ensure that there are no defects such as cracks or inclusions inside the product. The quality inspection data is fed back to the production control system in real time so that the rolling process parameters can be optimized and adjusted.

[0015] S5 finishing process: S501 Cooling and Straightening: According to the material and specifications of the product, select the appropriate cooling method. For alloy steel, the cooling rate is controlled at 10-15℃ / min when air cooling is used; when water cooling is used, the water temperature is controlled at 20-30℃, and the cooling time is adjusted between 10-30 minutes according to the product specifications. Use a multi-roller straightener to straighten the product. The pressure of the straightening rollers is adjusted between 5-10kN according to the curvature and material characteristics of the product. After straightening, the curvature of the product is controlled to be no more than 3mm per meter. During the cooling and straightening process, online detection equipment is used to monitor the straightening effect in real time, and products that fail to meet the straightening requirements are straightened a second time.

[0016] S6 Surface Treatment and Quality Inspection: A comprehensive quality inspection of the product surface is conducted. For products with minor surface defects, if the defect depth is within 0.2mm, they are repaired by grinding, polishing, or other methods. For products with severe surface defects, they are marked and isolated. When using pickling for surface treatment, the acid concentration should be controlled between 15% and 20%, and the pickling time should be between 10 and 20 minutes. When using shot peening, the shot peening intensity should be controlled between 0.2 and 0.3 N / mm² to ensure that the surface treatment effect meets the quality requirements. S7 Cutting, Packaging and Labeling: According to the product specifications, high-precision cutting equipment is used. For example, when cutting with an abrasive wheel saw, the cutting size accuracy is controlled within ±1mm; when cutting with a flame cutter, the cutting kerf width is controlled within 3-5mm. During the cutting process, strict control is exercised over the cutting dimensions to ensure that the product length meets quality standards. After cutting, the ends of the products undergo end treatment, with the chamfer angle controlled between 30 and 45°, and the surface roughness after deburring controlled between Ra3.2 and Ra6.3 μm. Qualified products are then packaged and labeled. When using steel strapping, the steel strap thickness is 0.8-1.2 mm; when using plastic film packaging, the film thickness is 0.05-0.1 mm. The packaging includes information such as product specifications, model, batch number, and production date, which facilitates product traceability and management. By implementing the integrated heating, rolling, and finishing process described above, the production efficiency and product quality of alloy steel can be effectively improved, meeting the market demand for high-quality alloy steel. Simultaneously, environmental protection and safe production are emphasized during the production process, employing advanced environmental protection equipment and safety measures to reduce environmental pollution and harm to employees.

[0017] Furthermore, this process enhances product quality and ensures raw material quality: during the raw material pretreatment stage, a high-precision laser measuring instrument (accuracy up to ±0.05mm) is used to detect dimensions, and an industrial endoscope is used to inspect internal defects. Targeted repair measures are taken for surface defects at different depths, effectively preventing defects from expanding in subsequent processing. This ensures the quality of billets from the source and lays a solid foundation for the production of high-quality alloy steel. Heating quality control: The heating temperature and time are precisely set through an intelligent control system. During the preheating stage, cold-filled and hot-filled billets are treated differently. In the high-temperature section, the temperature fluctuation is strictly controlled within ±15℃. Multi-point temperature monitoring technology is used to collect temperature data every 3-5 minutes. Combined with an infrared thermal imager, the surface temperature distribution of the billet is monitored in real time. Surface defects are checked every 2-3 hours and the heating furnace atmosphere is adjusted in time. This greatly reduces defects such as oxidation and decarburization, ensures uniform and stable heating quality of the billet, and improves the internal quality of the product. Rolling accuracy and quality monitoring: Before rolling, the equipment is thoroughly inspected and maintained, and the guide device is precisely adjusted to ensure that the billet deviation is controlled within ±1mm. During the rolling process, parameters such as rolling speed, reduction, and tension are set reasonably. The automatic thickness control system (AGC) ensures that the product thickness accuracy is within ±0.1mm. The high-pressure water descaling system is turned on to ensure surface quality. At the same time, online dimensional detection equipment (measurement accuracy up to ±0.08mm) and surface defect detection system are used for real-time monitoring, as well as regular internal quality spot checks, to comprehensively ensure the dimensional accuracy and surface and internal quality of the product, significantly improving the consistency and reliability of product quality.

[0018] Furthermore, this process improves production efficiency and heating efficiency: by optimizing the structure of the heating furnace and the combustion system, heating efficiency is increased by 20% - 30%, heating time is shortened by 30 - 60 minutes, the production cycle is reduced, and the output per unit time is increased, thereby improving overall production efficiency; Integrated process collaboration: The heating, rolling and finishing processes are closely integrated, and information is transmitted and fed back in real time between each link, reducing waiting time and human intervention in intermediate links, making the production process smooth and efficient, and greatly improving production efficiency; Reduced production costs and energy consumption: Through precise control and equipment optimization, the heating process reduces energy consumption by 15% - 20%, saving energy costs.

[0019] Reduce scrap rate: Through strict quality control throughout the entire process, scrap caused by quality problems is effectively reduced, and waste of raw materials, energy and labor is reduced, thereby reducing production costs.

[0020] 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 process for heating, rolling, and finishing in the production of alloy steel, characterized by: The specific process steps include: S1 raw material pretreatment, S2 precise control of heating temperature and time, S3 quality monitoring during heating, S4 rolling process, S5 finishing process, S6 surface treatment and quality inspection, and S7 cutting, packaging, and labeling. The S4 rolling process includes S401 pre-rolling preparation, S402 rolling process control, and S403 rolling quality inspection and feedback. The S5 finishing process includes S501 cooling and straightening. S1 raw material pretreatment: Before heating, a comprehensive inspection of the billet's dimensions, weight, appearance, and surface quality is conducted. Dimensions are measured using a high-precision laser measuring instrument with an accuracy of ±0.05mm, and internal defects are inspected using an industrial endoscope. For billets with minor surface defects, if the defect depth is within 0.5mm, mechanical grinding is used for repair; if the defect depth is between 0.5 and 1mm, chemical treatment is used for repair to prevent the defects from expanding during subsequent heating and rolling processes. S2 heating temperature and time are precisely controlled: Based on the material, size, and production plan of the billet, an intelligent control system is used to precisely set the heating temperature and time. In the preheating stage, for cold billets, the temperature is first slowly increased to 500-600℃ with a power of 50-80kW, and the heating rate is controlled at 5-8℃ / min, and then the heating power is gradually increased. Hot-charged billets can skip the preheating stage or shorten the preheating time to 30%-50% of the original. In the high-temperature section, the temperature fluctuation range is strictly controlled within ±15℃. Multi-point temperature monitoring technology is used to collect temperature data every 3-5 minutes. Once an abnormal temperature is detected, the power of the heating element is adjusted immediately. Quality monitoring during the S3 heating process: During the heating process, an infrared thermal imager is used to monitor the temperature distribution on the surface of the billet in real time, and a full scan is performed every 10-15 minutes. During this process, the surface of the billet should be checked every 2-3 hours for oxidation and decarburization defects. If the thickness of the iron oxide scale exceeds 0.1mm, the atmosphere in the heating furnace should be adjusted in time, such as controlling the oxygen content at 2%-3% and adding an appropriate amount of nitrogen as a protective gas to reduce the generation of defects. S6 Surface Treatment and Quality Inspection: A comprehensive quality inspection of the product surface is conducted. For products with minor surface defects, if the defect depth is within 0.2mm, they are repaired by grinding and polishing. For products with severe surface defects, they are marked and isolated. When using pickling for surface treatment, the acid concentration should be controlled between 15% and 20%, and the pickling time should be between 10 and 20 minutes. When using shot peening, the shot peening intensity should be controlled between 0.2 and 0.3 N / mm² to ensure that the surface treatment effect meets the quality requirements. S7 Cutting, Packaging and Labeling: According to the product specifications, high-precision cutting equipment is used. For example, when cutting with an abrasive wheel saw, the cutting size accuracy is controlled within ±1mm; when cutting with a flame cutter, the cutting kerf width is controlled within 3-5mm. During the cutting process, strict control is exercised over the cutting dimensions to ensure that the product length meets quality standards. After cutting, the ends of the products undergo end treatment, with the chamfer angle controlled between 30 and 45°, and the surface roughness after deburring controlled between Ra3.2 and Ra6.3 μm. Qualified products are then packaged and labeled. When using steel strapping, the steel strap thickness is 0.8 to 1.2 mm; when using plastic film packaging, the film thickness is 0.05 to 0.1 mm. The packaging includes information such as product specifications, model, batch number, and production date, facilitating product traceability and management.

2. The integrated heating, rolling, and finishing process for alloy steel production according to claim 1, characterized in that: The S2 heating temperature and time are precisely controlled. By optimizing the structure of the heating furnace and the combustion system, the heating efficiency can be increased by 20% - 30%, the heating time can be shortened by 30 - 60 minutes, and energy consumption can be reduced by 15% - 20%.

3. The integrated heating, rolling, and finishing process for alloy steel production according to claim 1, characterized in that: The S401 pre-rolling preparation includes a comprehensive inspection and maintenance of the rolling mill, guides, and roller conveyor equipment. A roll profile measuring instrument is used to detect roll wear; rolls with wear depths exceeding 0.15mm are replaced promptly. Simultaneously, the guide devices are precisely adjusted to ensure that billet deviation during rolling is controlled within ±1mm, preventing deviation and scratches.

4. The integrated heating, rolling, and finishing process for alloy steel production according to claim 1, characterized in that: The S402 rolling process control: Based on the characteristics of the billet and the product specifications, reasonable rolling process parameters are formulated. The rolling speed is controlled between 2 and 5 m / s, the reduction is adjusted between 5 and 15 mm according to different rolling stages, and the tension is controlled between 50 and 100 kN. During the rolling process, the automatic thickness control system (AGC) of the rolling mill automatically adjusts the gap between the rolls according to the actual thickness changes of the billet, ensuring that the thickness accuracy of the product is controlled within ±0.1mm. During the rolling process, the high-pressure water descaling system is activated, with the water pressure controlled at 15-20 MPa. The nozzles and manifolds of the descaling system are checked regularly, and clogged nozzles are cleaned every 8 hours, while leaking manifolds are replaced weekly.

5. The integrated heating, rolling, and finishing process for alloy steel production according to claim 1, characterized in that: S403 rolling quality inspection and feedback: During the rolling process, online dimensional inspection equipment, such as a laser diameter gauge, is used to monitor the dimensional changes of the product in real time. The measurement accuracy can reach ±0.08mm. Once the dimensional deviation is found to exceed the allowable range, the rolling parameters are immediately adjusted for correction. During the rolling process, a surface defect detection system, such as a machine vision inspection system, is used to monitor the product surface in real time at a rate of 5-10 frames per second. For internal quality, an ultrasonic flaw detector and a magnetic particle flaw detector are used for random inspection every 2-3 hours to ensure that there are no cracks or inclusions inside the product. The quality inspection data is fed back to the production control system in real time so that the rolling process parameters can be optimized and adjusted.

6. The integrated heating, rolling, and finishing process for alloy steel production according to claim 1, characterized in that: The S501 cooling and straightening: Based on the product's material and specifications, select an appropriate cooling method. For alloy steel, air cooling should be performed at a rate of 10-15℃ / min; water cooling should be performed at a rate of 20-30℃, with the cooling time adjusted between 10-30 minutes depending on the product specifications. A multi-roller straightener should be used to straighten the product, with the pressure of the straightening rollers adjusted between 5-10kN based on the product's curvature and material characteristics. After straightening, the curvature of the product should be controlled to be no more than 3mm per meter. During the cooling and straightening process, online detection equipment is used to monitor the straightening effect in real time, and products that fail to meet the straightening requirements are straightened a second time.