Television tower derrick high building steel processing technology

Abstract

The invention provides a television tower derrick high building steel machining process which comprises the steps of steel pretreatment, steel blanking, hole machining, assembling and installing, welding seam welding machining, welding seam inspection, surface cleaning, acid pickling and galvanization. High building steel parts are high in hardness, high in strength and poor in heat conductivity in the welding process, and the high building steel parts are not prone to deformation in the welding process; for high-rise building steel parts with specific sizes and material characteristics, adverse factors such as deformation of the parts and weld joint cracking should be controlled by controlling welding parameters and a heat treatment method, the welding quality is guaranteed, the high-rise building steel parts are galvanized through a hot-dip galvanizing method, and due to the fact that the high-rise building steel parts are complex, the production cost is low. And the thickness and the galvanization uniformity of a galvanization layer need to be strictly controlled.

Description

Technical Field

[0001] The invention belongs to the field of high-rise steel processing, and in particular relates to a high-rise steel processing technology for a TV tower derrick. Background Art

[0002] With the continuous advancement of urbanization, the demand for the construction of basic communication facilities in cities is also increasing. As an important part of urban landmarks and communication infrastructure, the market demand for TV towers is also increasing. With the development of technology, more functions and higher safety and stability requirements are required for TV towers. The TV tower derrick is one of the key components of the TV tower structure. It undertakes the important task of supporting and stabilizing TV antennas, wireless communication equipment and other signal transmission equipment. The safety and stability of the TV tower structure are closely related to the structural performance of the TV tower derrick. Therefore, it is very important to study the quality, strength and durability of the TV tower derrick.

[0003] At present, in the production and manufacturing process of TV tower derrick, high-strength steel has become one of the preferred materials, mainly because it has excellent strength, corrosion resistance and lightweight characteristics, which can effectively reduce the weight of the derrick and improve the bearing capacity and wind resistance of the derrick. In the derrick column materials, the TV tower mainly chooses Φ351*20 and Φ351*16 steel pipes, made of Q355GJC seamless steel pipes and Q355GJC steel plates. Compared with traditional steel, Q355GJC seamless steel pipes have good toughness, plasticity, welding performance and seismic resistance. In recent years, it has been more and more widely used in steel structure buildings. For high-rise steel structures such as TV towers, they must have sufficient structural strength and stability to withstand their own weight, wind loads, and external loads of seismic forces. The application of high-strength steel not only meets the requirements of structural strength, but also meets the lightweight design of the structure, which perfectly meets the needs of high-rise steel structures. The construction efficiency and quality control factors in the manufacturing process of TV tower derricks also put forward higher requirements for high-strength steel processing technology.

[0004] However, high-rise steel has higher yield strength and tensile strength, which makes it more difficult to process. Due to the high-strength characteristics of high-rise steel, plastic deformation is prone to occur during processing. High-rise steel structures often involve welding processes, which are prone to deformation during welding, increased residual stress, weld embrittlement and hardening, which are factors that affect welding quality. High-rise steel structures require surface treatment and anti-corrosion treatment during use.

[0005] Therefore, in view of the shortcomings of the above-mentioned scheme in actual production and implementation, it is revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the present invention is created to provide a TV tower derrick high-rise steel processing technology to solve the problem. Summary of the invention

[0006] The present invention proposes a processing technology for high-rise steel of a TV tower derrick, which solves the problem that the high-strength characteristics of high-rise steel in the prior art are prone to plastic deformation during processing. High-rise steel structures often involve welding processes, which are prone to deformation, increased residual stress, weld embrittlement and hardening during welding, which are factors affecting welding quality. High-rise steel structures need to be surface treated and anti-corrosion treated during use, and high-rise steel structures usually have high precision and size requirements.

[0007] The technical solution of the present invention is implemented as follows: a TV tower derrick high-rise steel processing technology, the high-rise steel processing technology comprises the following steps: S1. Steel pretreatment: Before the formal processing of high-rise steel, the steel should be pretreated to ensure the quality of processing and welding. The steel surface should be cleaned with solvent to remove surface oil and other pollutants to ensure the surface is clean. For steel with obvious rust, it should be rust-removed; S2. Cutting of steel materials: When processing steel components, the steel plates should be laid out and cut. The processing allowance and welding shrinkage compensation should be increased according to the requirements of parts processing and welding. The cut plates should be aligned and the surface should be cleaned with a leveler. The welded edges of the steel pipes should be processed with a planer. The steel to be cut should be placed on the cutting table or fixture, and positioned and fixed to ensure stability and accuracy during the cutting process. S3. Hole processing: According to the specific design requirements, mark the position of the hole on the steel, and select the corresponding hole processing method. Use measuring tools and rulers for precise positioning to ensure that the position of the hole is accurate. According to the requirements of the hole size, depth and shape, select the appropriate cutting tool; S4. Assembly and installation: Mark and assemble according to the central axis and busbar of the steel pipe. In order to effectively prevent excessive angular deformation during steel welding, it is necessary to use internal partitions to reinforce the components. The spacing of the diagonal braces should be appropriately adjusted according to the diameter of the components. The welding materials used in the assembly and positioning of the high-rise steel should be consistent with the formal welding materials. After the positioning and assembly of the rods are completed, they are hoisted into the gantry submerged arc automatic welding machine and welded according to the welding sequence. The high-rise steel of the TV tower derrick can be assembled into a 12-sided shape to ensure the overall stability of the high-rise steel. S5. Welding processing: In order to provide an appropriate welding area and meet the requirements of the first-level weld, the welding materials should be chamfered and grooved. The welding parameters mainly include welding current, welding speed and welding gas protection. Relevant welding tests should be carried out to determine the appropriate welding parameters on the premise of meeting the first-level weld quality requirements. Post-welding processing refers to the processing and processing of the welded joint or weld after welding is completed to ensure the welding quality, performance and appearance; S6. Weld inspection: Weld joints are inspected and evaluated to ensure that they meet the specifications and required welding procedures. During weld inspection, weld inspection methods and sampling methods should be determined to ensure that the weld quality is a first-class weld. S7. Surface cleaning: Clean the surface of components to remove oil, dust and impurities to ensure a smooth and pollution-free surface. S8, pickling: remove the oxides on the surface of steel parts by pickling to facilitate the adhesion of zinc liquid during subsequent galvanizing; S9, Galvanizing: The TV tower derrick high-rise steel is processed by hot-dip galvanizing.

[0008] As a preferred implementation mode, the rust removal treatment in the S1 steel pretreatment includes mechanical rust removal, chemical rust removal and sandblasting rust removal. For flat-plate high-rise steel, mechanical rust removal can be selected, and for round-tube high-rise steel, chemical rust removal can be selected. In actual production, the pretreatment of TV tower derrick high-rise steel parts and components should be formulated according to the shape, size, degree of rust and process efficiency of the specific steel.

[0009] As a preferred embodiment, the hole processing method in the S3 hole processing needs to control the cutting speed, feed speed and cutting depth parameters to ensure that the size and quality of the hole meet the requirements. After the hole processing is completed, the size of the hole is measured using a caliper and a micrometer measuring tool to check whether it meets the design requirements and tolerance requirements.

[0010] As a preferred implementation, the steel positioning and assembly in the S4 assembly and installation is performed by preheating the steel pipe with a ceramic electric heater before welding. In order to reasonably control the deformation generated during the welding process, it is necessary to strengthen quality inspection and adjust the welding parameters and welding deformation at any time. After welding is completed, the weld is checked, the temporary support to prevent deformation is removed, the traces are polished clean, and the arc pit is repaired by manual arc welding and smoothing.

[0011] As a preferred embodiment, after the detection and evaluation in the S6 weld inspection is completed after welding, a preliminary welding quality evaluation method should be established through appearance inspection to determine whether deburring, polishing, annealing or heat treatment, weld filling and repair post-weld processing work is required, and to preliminarily control the welding appearance, quality and shape of the welded parts after welding.

[0012] As a preferred embodiment, the pickling solution in the S8 pickling is generally hydrochloric acid or sulfuric acid, wherein hydrochloric acid has the advantage of friendly operating conditions and can be carried out at room temperature. Compared with hydrochloric acid, sulfuric acid has higher acidity and better dehydrogenation ability, and the cleaning effect is more obvious. At the same time, there is also excessive corrosion to the metal, so the pickling time needs to be strictly controlled. When using sulfuric acid for pickling, the pickling temperature needs to be ensured to be 60°~80°. Therefore, for the two pickling solvents, it is necessary to comprehensively consider the influence of various aspects and select a more suitable pickling method. In order to avoid excessive corrosion and promote the interaction between components and zinc liquid, corrosion inhibitors should be added to the pickling tank. Common slow-release agent components include phosphates and nitrates.

[0013] As a preferred embodiment, the hot-dip galvanizing processing method in the S9 galvanizing, the zinc liquid temperature control, penetration time control and leakage point control are the key factors determining the quality of galvanizing. In the galvanizing process, the zinc liquid temperature is very critical for obtaining a uniform and dense coating. Too low a temperature will lead to an uneven coating, and too high a temperature may cause deformation of the steel. Under the same conditions, the penetration time also has a key influence on the coating quality. If the penetration time is too short, the coating is too thin or cannot completely cover the surface of the structure. If the galvanizing time is too long, it may lead to an overly thick coating. The dew point phenomenon will also affect the quality of galvanizing. In a high temperature environment, moisture and air in the plating solution will adhere to the surface of the steel structure to form a dew point phenomenon. To ensure that the steel is galvanized without a dew point, ventilation and heating measures should be taken to control and prevent the formation of dew points to improve the quality of galvanizing and reduce the number of reworks and product failure rates.

[0014] After adopting the above technical solution, the beneficial effects of the present invention are: 1. The thickness of the high-rise steel parts of the derrick structure is relatively large, and the requirements for the dimensional accuracy and cutting quality of the high-rise steel parts are high. For the processing of high-rise steel parts, it is necessary to fully consider the characteristics and dimensional requirements of the high-rise steel materials and select appropriate equipment and process methods.

[0015] 2. During the welding process, high-rise steel parts have high hardness, high strength and poor thermal conductivity. Therefore, for high-rise steel parts with specific sizes and material properties, the welding parameters and heat treatment methods should be controlled to control the deformation of the parts and the adverse factors of weld cracking to ensure the welding quality.

[0016] 3. The main function of zinc is to increase its corrosion resistance and extend its service life. High-rise steel parts are galvanized by hot-dip galvanizing. Since high-rise steel parts are relatively complex, the thickness of the galvanizing layer and the uniformity of the galvanizing need to be strictly controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the processing technology of the present invention; DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, a TV tower derrick high-rise steel processing technology, the high-rise steel processing technology includes the following steps: S1. Steel pretreatment: Before the formal processing of high-rise steel, the steel should be pretreated to ensure the quality of processing and welding. The steel surface should be cleaned with solvent to remove surface oil and other pollutants to ensure the surface is clean. For steel with obvious rust, it should be rust-removed; S2. Cutting of steel materials: When processing steel components, the steel plates should be laid out and cut. The processing allowance and welding shrinkage compensation should be increased according to the requirements of parts processing and welding. The cut plates should be aligned and the surface should be cleaned with a leveler. The welded edges of the steel pipes should be processed with a planer. The steel to be cut should be placed on the cutting table or fixture, and positioned and fixed to ensure stability and accuracy during the cutting process. S3. Hole processing: According to the specific design requirements, mark the position of the hole on the steel, and select the corresponding hole processing method. Use measuring tools and rulers for precise positioning to ensure that the position of the hole is accurate. According to the requirements of the hole size, depth and shape, select the appropriate cutting tool; S4. Assembly and installation: Mark and assemble according to the central axis and busbar of the steel pipe. In order to effectively prevent excessive angular deformation during steel welding, it is necessary to use internal partitions to reinforce the components. The spacing of the diagonal braces should be appropriately adjusted according to the diameter of the components. The welding materials used in the assembly and positioning of the high-rise steel should be consistent with the formal welding materials. After the positioning and assembly of the rods are completed, they are hoisted into the gantry submerged arc automatic welding machine and welded according to the welding sequence. The high-rise steel of the TV tower derrick can be assembled into a 12-sided shape to ensure the overall stability of the high-rise steel. S5. Welding processing: In order to provide an appropriate welding area and meet the requirements of the first-level weld, the welding materials should be chamfered and grooved. The welding parameters mainly include welding current, welding speed and welding gas protection. Relevant welding tests should be carried out to determine the appropriate welding parameters on the premise of meeting the first-level weld quality requirements. Post-welding processing refers to the processing and processing of the welded joint or weld after welding is completed to ensure the welding quality, performance and appearance; S6. Weld inspection: Weld joints are inspected and evaluated to ensure that they meet the specifications and required welding procedures. During weld inspection, weld inspection methods and sampling methods should be determined to ensure that the weld quality is a first-class weld. S7. Surface cleaning: Clean the surface of components to remove oil, dust and impurities to ensure a smooth and pollution-free surface. S8, pickling: remove the oxides on the surface of steel parts by pickling to facilitate the adhesion of zinc liquid during subsequent galvanizing; S9, Galvanizing: The TV tower derrick high-rise steel is processed by hot-dip galvanizing.

[0021] Furthermore, the rust removal treatment in the S1 steel pretreatment includes mechanical rust removal, chemical rust removal and sandblasting rust removal. For flat-plate high-rise steel, mechanical rust removal can be selected, and for round tube high-rise steel, chemical rust removal can be selected. In actual production, the pretreatment of TV tower derrick high-rise steel parts and components should be formulated according to the shape, size, degree of rust and process efficiency of the specific steel.

[0022] Furthermore, the hole processing method in the S3 hole processing needs to control the cutting speed, feed speed and cutting depth parameters to ensure that the size and quality of the hole meet the requirements. After the hole processing is completed, the size of the hole is measured using calipers and micrometer measuring tools to check whether it meets the design requirements and tolerance requirements.

[0023] Furthermore, the steel positioning and assembly in the S4 assembly and installation are performed by preheating the steel pipe with a ceramic electric heater before welding. In order to reasonably control the deformation generated during the welding process, it is necessary to strengthen quality inspection and adjust the welding parameters and welding deformation at any time. After welding is completed, the weld is checked, the temporary support to prevent deformation is removed, the traces are polished clean, and the arc pit is repaired by manual arc welding and smoothing.

[0024] Furthermore, after the inspection and evaluation in the S6 weld inspection is completed after welding, a preliminary welding quality evaluation method should be established through appearance inspection to determine whether deburring, polishing, annealing or heat treatment, weld filling and repair post-welding processing is required, and to preliminarily control the welding appearance, quality and shape of the welded parts after welding.

[0025] Furthermore, the pickling solution in the S8 pickling is generally hydrochloric acid or sulfuric acid, wherein hydrochloric acid has the advantage of friendly operating conditions and can be carried out at room temperature. Compared with hydrochloric acid, sulfuric acid has higher acidity and better dehydrogenation ability, and the cleaning effect is more obvious. At the same time, there is also excessive corrosion to the metal, so the pickling time needs to be strictly controlled. When using sulfuric acid for pickling, the pickling temperature needs to be ensured to be 60°~80°. Therefore, for the two pickling solvents, it is necessary to comprehensively consider the influence of various aspects and select a more suitable pickling method. In order to avoid excessive corrosion and promote the interaction between components and zinc liquid, corrosion inhibitors should be added to the pickling tank. Common slow-release agent components include phosphates and nitrates.

[0026] Furthermore, in the hot-dip galvanizing processing method in the S9 galvanizing, the zinc liquid temperature control, penetration time control and leakage point control are key factors determining the quality of galvanizing. During the galvanizing process, the zinc liquid temperature is very critical for obtaining a uniform and dense coating. Too low a temperature will lead to an uneven coating, and too high a temperature may cause deformation of the steel. Under the same conditions, the penetration time also has a key influence on the coating quality. If the penetration time is too short, the coating is too thin or cannot completely cover the surface of the structure. If the galvanizing time is too long, it may result in an overly thick coating. The dew point phenomenon will also affect the quality of galvanizing. In a high temperature environment, moisture and air in the plating solution will adhere to the surface of the steel structure to form a dew point phenomenon. To ensure that the steel is galvanized without a dew point, ventilation and heating measures should be taken to control and prevent the formation of dew points to improve the quality of galvanizing and reduce the number of reworks and product failure rates.

[0027] The present invention can use solvents to clean the surface of steel, remove surface oil and other pollutants, and ensure that the surface is clean. For steel with obvious rust, a steel pretreatment method based on the steel components of the TV tower derrick high-rise building should be formulated according to the shape, size, degree of rust and process efficiency factors of the specific steel. The steel to be cut is then placed on a cutting table or fixture, and positioned and fixed to ensure stability and accuracy during the cutting process. Appropriate cutting parameters are set according to the type, thickness and cutting method of the steel. During the cutting process, it is necessary to control the movement of the cutting equipment and the supply of cutting gas to ensure stable cutting quality. Measuring tools and rulers are used for precise positioning to ensure that the position of the hole is accurate. The cutting speed, feed speed and cutting depth parameters are controlled according to the requirements of the aperture size, depth and shape. The steel pipe is marked and assembled according to the central axis and generatrix. In order to effectively prevent excessive angular deformation during steel welding, it is hoisted into the gantry submerged arc Automatic welding machine and welding in welding sequence can assemble the TV tower derrick high-rise steel into 12-sided shape to ensure the overall stability of high-rise steel. Under the premise of meeting the first-level weld quality requirements, the high-rise steel determines the appropriate welding parameters. Post-welding treatment refers to the treatment and processing of welding joints or welds after welding is completed to ensure welding quality, performance and appearance. A preliminary welding quality evaluation method should be established through appearance inspection to determine whether to perform burr removal, polishing, annealing or heat treatment, weld filling and repair post-welding treatment to ensure that the weld quality is a first-level weld. Hydrochloric acid or sulfuric acid method is selected. In order to avoid excessive corrosion, phosphate and nitrate slow-release agents should be added to promote the interaction between components and zinc liquid. In the galvanizing process, zinc liquid temperature control, penetration time control and leak point control are the key factors affecting the quality of galvanizing. In order to ensure that the steel is galvanized without dew point, ventilation and heating measures should be taken to control and prevent the formation of dew point to improve the quality of galvanizing.

[0028] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A TV tower derrick high-rise steel processing technology, characterized in that: The high-rise steel processing technology comprises the following steps: S1. Steel pretreatment: Before the formal processing of high-rise steel, the steel should be pretreated to ensure the quality of processing and welding. The steel surface should be cleaned with solvent to remove surface oil and other pollutants to ensure the surface is clean. For steel with obvious rust, it should be rust-removed; S2. Cutting of steel materials: When processing steel components, the steel plates should be laid out and cut. The processing allowance and welding shrinkage compensation should be increased according to the requirements of parts processing and welding. The cut plates should be aligned and the surface should be cleaned with a leveler. The welded edges of the steel pipes should be processed with a planer. The steel to be cut should be placed on the cutting table or fixture, and positioned and fixed to ensure stability and accuracy during the cutting process. S3. Hole processing: According to the specific design requirements, mark the position of the hole on the steel, and select the corresponding hole processing method. Use measuring tools and rulers for precise positioning to ensure that the position of the hole is accurate. According to the requirements of the hole size, depth and shape, select the appropriate cutting tool; S4. Assembly and installation: Mark and assemble according to the central axis and busbar of the steel pipe. In order to effectively prevent excessive angular deformation during steel welding, it is necessary to use internal partitions to reinforce the components. The spacing of the diagonal braces should be appropriately adjusted according to the diameter of the components. The welding materials used in the assembly and positioning of the high-rise steel should be consistent with the formal welding materials. After the positioning and assembly of the rods are completed, they are hoisted into the gantry submerged arc automatic welding machine and welded according to the welding sequence. The high-rise steel of the TV tower derrick can be assembled into a 12-sided shape to ensure the overall stability of the high-rise steel. S5. Welding processing: In order to provide an appropriate welding area and meet the requirements of the first-level weld, the welding materials should be chamfered and grooved. The welding parameters mainly include welding current, welding speed and welding gas protection. Relevant welding tests should be carried out to determine the appropriate welding parameters on the premise of meeting the first-level weld quality requirements. Post-welding processing refers to the processing and processing of the welded joint or weld after welding is completed to ensure the welding quality, performance and appearance; S6. Weld inspection: Weld joints are inspected and evaluated to ensure that they meet the specifications and required welding procedures. During weld inspection, weld inspection methods and sampling methods should be determined to ensure that the weld quality is a first-class weld. S7. Surface cleaning: Clean the surface of components to remove oil, dust and impurities to ensure a smooth and pollution-free surface. S8, pickling: remove the oxides on the surface of steel parts by pickling to facilitate the adhesion of zinc liquid during subsequent galvanizing; S9, Galvanizing: The TV tower derrick high-rise steel is processed by hot-dip galvanizing.

2. A TV tower derrick high-rise steel processing technology according to claim 1, characterized in that: The rust removal treatment in the S1 steel pretreatment includes mechanical rust removal, chemical rust removal and sandblasting rust removal. For flat-plate high-rise steel, mechanical rust removal can be selected, and for round tube high-rise steel, chemical rust removal can be selected. In actual production, the pretreatment of TV tower derrick high-rise steel parts and components should be formulated according to the shape, size, degree of rust and process efficiency of the specific steel.

3. The TV tower derrick high-rise steel processing technology according to claim 1 is characterized in that: The hole processing method in the S3 hole processing needs to control the cutting speed, feed speed and cutting depth parameters to ensure that the size and quality of the hole meet the requirements. After the hole processing is completed, the size of the hole is measured using calipers and micrometer measuring tools to check whether it meets the design requirements and tolerance requirements.

4. A TV tower derrick high-rise steel processing technology according to claim 1, characterized in that: The steel positioning and assembly in the S4 assembly and installation is performed by preheating the steel pipe with a ceramic electric heater before welding. In order to reasonably control the deformation generated during the welding process, it is necessary to strengthen quality inspection and adjust the welding parameters and welding deformation at any time. After welding is completed, the weld is checked, the temporary support to prevent deformation is removed, the traces are polished clean, and the arc pit is repaired by manual arc welding and smoothing.

5. The TV tower derrick high-rise steel processing technology according to claim 1 is characterized in that: After the inspection and evaluation in the S6 weld inspection is completed after welding, a preliminary welding quality evaluation method should be established through appearance inspection to determine whether deburring, polishing, annealing or heat treatment, weld filling and repair post-weld processing is required, and to preliminarily control the welding appearance, quality and shape of the welded parts after welding.

6. The TV tower derrick high-rise steel processing technology according to claim 1 is characterized in that: The pickling solution in the S8 pickling is generally hydrochloric acid or sulfuric acid, wherein hydrochloric acid has the advantage of friendly operating conditions and can be carried out at room temperature. Compared with hydrochloric acid, sulfuric acid has higher acidity and better dehydrogenation ability, and the cleaning effect is more obvious. At the same time, there is also excessive corrosion to the metal, so the pickling time needs to be strictly controlled. When using sulfuric acid for pickling, the pickling temperature needs to be ensured to be 60°~80°. Therefore, for the two pickling solvents, it is necessary to comprehensively consider the influence of various aspects and select a more suitable pickling method. In order to avoid excessive corrosion and promote the interaction between components and zinc liquid, corrosion inhibitors should be added to the pickling tank. Common slow-release agent components include phosphates and nitrates.

7. The TV tower derrick high-rise steel processing technology according to claim 1 is characterized in that: In the hot-dip galvanizing processing method in the S9 galvanizing, the zinc liquid temperature control, penetration time control and leakage point control are key factors determining the quality of galvanizing. During the galvanizing process, the zinc liquid temperature is very critical for obtaining a uniform and dense coating. Too low a temperature will lead to an uneven coating, and too high a temperature may cause deformation of the steel. Under the same conditions, the penetration time also has a key influence on the coating quality. If the penetration time is too short, the coating is too thin or cannot completely cover the surface of the structure. If the galvanizing time is too long, it may lead to an overly thick coating. The dew point phenomenon will also affect the quality of galvanizing. In a high temperature environment, moisture and air in the plating solution will adhere to the surface of the steel structure to form a dew point phenomenon. In order to ensure that the steel is galvanized without a dew point, ventilation and heating measures should be taken to control and prevent the formation of dew points to improve the quality of galvanizing and reduce the number of reworks and product failure rates.

Images