Anticorrosion treatment process for waveform guardrail plate used on highway

Abstract

The invention relates to the technical field of corrugated guardrail plate treatment processes, in particular to an anti-corrosion treatment process for a used corrugated guardrail plate of a highway. According to the technical scheme, the anti-corrosion treatment process further comprises treatment equipment, the treatment equipment comprises pretreatment equipment, hot galvanizing equipment and plastic spraying equipment which are sequentially arranged, and conveying equipment used for conveying the wave-shaped guardrail plate is arranged among the pretreatment equipment, the hot galvanizing equipment and the plastic spraying equipment. The pretreatment equipment is used for pretreating the wave-shaped guardrail plate and improving the adhesion capacity of the wave-shaped guardrail plate; the hot galvanizing equipment receives the waveform guardrail plate and then carries out hot galvanizing treatment on the surface of the waveform guardrail plate; and the plastic spraying equipment is used for carrying out plastic spraying processing on the wave-shaped guardrail plate subjected to hot galvanizing treatment. According to the corrugated guardrail plate processing equipment, integration of corrugated guardrail plate processing equipment is achieved, then the technology before spraying of an anti-corrosion layer of the corrugated guardrail plate is completed, the adhesive force of the anti-corrosion layer is enhanced, the anti-corrosion effect of the corrugated guardrail plate is further improved, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated guardrail plate processing technology, and in particular to an anti-corrosion processing technology for corrugated guardrail plates used in highways. Background Art

[0002] Highway guardrails, also known as "corrugated beam guardrails", are the main form of rigid guardrails. They are a continuous structure in which corrugated steel guardrail panels are spliced ​​together and supported by main columns. They are composed of two corrugated steel guardrail panels and two columns fixedly clamped between them. The two columns are fixedly clamped between the two corrugated steel guardrail panels. Since the corrugated guardrail material is exposed to the outside for a long time, in order to achieve safety and reliability, the corrugated guardrail material is required to have strong hardness and corrosion resistance; therefore, the anti-corrosion layer of the corrugated guardrail material is required to have good corrosion resistance and not easy to fall off during processing. In the patent document with the publication number CN110142192A, a two-in-one composite coating spraying method for highway guardrail columns and corrugated guardrail panels is disclosed. In this scheme, the workpiece to be sprayed can be effectively degreased, rusted and impurities removed by spraying pre-treatment during spraying, which then helps to improve the spraying of the workpiece surface. However, the existing pre-treatment process is realized by a variety of equipment, so the integration of the equipment is not high, and there is room for improvement in the processing technology of the corrugated guardrail panel. Therefore, the present application proposes a process for anti-corrosion treatment of corrugated guardrail panels used in highways. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the background technology and to propose a highly comprehensive anti-corrosion treatment process for corrugated guardrails used on highways.

[0004] The technical solution of the present invention is: a process for anti-corrosion treatment of corrugated guardrails used in highways, the process also includes treatment equipment, the treatment equipment includes a pre-treatment equipment, a hot-dip galvanizing equipment and a plastic spraying equipment arranged in sequence, and a conveying equipment for conveying corrugated guardrails is arranged between the pre-treatment equipment, the hot-dip galvanizing equipment and the plastic spraying equipment;

[0005] The pretreatment equipment is used for pretreatment of the corrugated guardrail plate to improve the adhesion ability of the corrugated guardrail plate;

[0006] The hot-dip galvanizing equipment performs hot-dip galvanizing treatment on the surface of the corrugated guardrail plate after receiving the corrugated guardrail plate;

[0007] The spraying equipment is used for spraying the corrugated guardrail plate after hot-dip galvanizing.

[0008] The pretreatment equipment includes a cleaning component and a grinding component arranged thereon for degreasing and derusting the corrugated guardrail plate;

[0009] The cleaning assembly includes a collection tank arranged on the inner wall of the bottom of the pretreatment device and a storage cavity opened on the inner wall of the top of the pretreatment device. Two groups of infusion plates arranged opposite to each other are arranged above the collection tank. Multiple groups of nozzles are arranged in an array on one side of the infusion plates arranged opposite to each other. A driving assembly for driving the infusion plates and located on the outer wall of the pretreatment device is also arranged on one side of the infusion plates.

[0010] A transfer assembly is also provided below the polishing assembly and is connected to the inner walls of both sides of the pretreatment equipment. The transfer assembly also includes a transfer plate and an electric guide roller rotatably installed in the transfer plate and protruding from the transfer plate.

[0011] A mounting plate matching the shape of the corrugated guardrail plate is also provided above the transfer assembly, and a plurality of electric grinding wheels for grinding the corrugated guardrail plate are installed on the upper surfaces of the mounting plate and the transfer plate. A pulling assembly for clamping and pulling the corrugated guardrail plate is also provided on one side of the grinding assembly.

[0012] Optionally, the side wall of the pretreatment equipment is also provided with a guide slide passing through it, and a clamping member is slidably arranged in the guide slide, and the clamping member includes a sliding block passing through the guide slide and an electric clamping plate for clamping the side of the corrugated guardrail plate.

[0013] Optionally, a cylinder is provided on one side of the sliding block, and a base end of the cylinder is fixedly connected to a side surface of the pretreatment equipment.

[0014] Optionally, the transfer plate includes a horizontal section arranged parallel to the conveying device, and the length of the horizontal section is greater than the length of the corrugated guardrail plate;

[0015] The transfer plate also includes inclined sections obliquely arranged at both ends of the horizontal section, the inclined section has an inclination angle less than 3° relative to the conveying plane of the conveying device, and the bottom end of the inclined section contacts the conveying plane of the conveying device.

[0016] Optionally, both ends of the two groups of infusion plates are fixedly connected with connecting shafts, the connecting shaft on one side is rotatably mounted on the inner wall of the pretreatment device through a bearing, and the connecting shaft on the other side passes through the pretreatment device.

[0017] Optionally, the driving assembly further comprises a dual-shaft motor mounted on the outer side wall of the pre-processing device, and a connecting shaft penetrating the pre-processing device is connected to one side output end of the dual-shaft motor;

[0018] A pulley 1 is fixedly mounted on the outer ring of the output end of the other side of the dual-axis motor, a pulley 2 is arranged below the pulley 1, and a belt for linkage between the pulley 1 and the pulley 2 is arranged between the pulley 1 and the pulley 2;

[0019] The inner ring of the second pulley is fixedly connected to a connecting shaft connected to one side of the infusion plate below.

[0020] Optionally, a water pump is provided at the bottom of one of the infusion plates, and the water pump comprises a soft water pipe and a water pump;

[0021] A connecting hose is arranged between the top infusion plate and the receiving chamber, and a liquid circulation system is arranged between the receiving chamber and the collecting tank, and between the receiving chamber and the top infusion plate.

[0022] Furthermore, the present invention also proposes an anti-corrosion treatment process for a highway corrugated guardrail plate, which specifically includes the following treatment steps:

[0023] Pretreatment: Combined with pretreatment equipment, the corrugated guardrail plate is degreased, rusted and passivated to enhance the adhesion of the anti-corrosion layer on the outer surface of the corrugated guardrail plate;

[0024] Hot-dip galvanizing treatment: The corrugated guardrail is transported to the hot-dip galvanizing equipment by the conveying equipment, and the plating agent is initially treated. The treated guardrail is immersed in the high-temperature molten zinc liquid. After hot-dip galvanizing, the corrugated guardrail is taken out from the zinc liquid and forcedly cooled by natural cooling, air cooling, and water cooling to make the zinc layer solidify quickly. After cooling, secondary passivation is performed;

[0025] Plastic spraying treatment: The corrugated guardrail plate after hot-dip galvanizing is surface polished, electrostatically sprayed and cured.

[0026] Preferably, the plating assistant is a mixed solution of ammonium chloride and zinc chloride, the plating assistant temperature is controlled at 60° C.-80° C., and the immersion time is 1-3 minutes.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] The present invention pre-treats the corrugated guardrail plate by setting a pre-treatment device, and continuously transports the corrugated guardrail plate in combination with the setting of a conveying device, so as to continuously advance the anti-corrosion layer treatment process. The overall process equipment has a high degree of integration, and the treatment process of the corrugated guardrail plate is improved;

[0029] Further, the outer surface of the corrugated guardrail plate being transported is cleaned by setting the driving assembly and the nozzles. The oil, grease and other pollutants on the surface of the corrugated guardrail plate are thoroughly removed by using cleaning agents such as organic solvents or alkaline solutions to ensure the surface cleanliness, so as to enhance the adhesion between the anti-corrosion layer and the substrate. The two sets of nozzles are also continuously swung and rotated for cleaning by the driving assembly. During the swaying process, the impact force between the liquid and the corrugated guardrail plate is constantly changed, thereby achieving sufficient multi-pressure cleaning of the surface of the corrugated guardrail plate, thereby improving the cleaning effect.

[0030] Furthermore, by setting the pulling component, the transfer component and the grinding component, the conveying and grinding of the specific position of the corrugated guardrail plate is realized, and the corrugated guardrail plate is fully ground by combining the setting of the shape of the mounting plate. The pulling of the pulling component is combined to assist the pulling and grinding of the corrugated guardrail plate. The grinding of the corrugated guardrail plate increases the contact area with the anti-corrosion layer, and further improves the adhesion of the anti-corrosion layer of the corrugated guardrail plate.

[0031] In summary, the present invention realizes the integration of corrugated guardrail plate processing equipment, thereby improving the process before spraying the anti-corrosion layer of the corrugated guardrail plate, enhancing the adhesion of the anti-corrosion layer, further improving the anti-corrosion effect of the corrugated guardrail plate, and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the process equipment of the present invention is provided;

[0033] Figure 2 for Figure 1 A front view schematic diagram of

[0034] Figure 3 A cross-sectional front view structural diagram of the pretreatment equipment in the present invention is provided;

[0035] Figure 4 A schematic structural diagram of a cleaning component in a pretreatment device of the present invention is provided;

[0036] Figure 5 A schematic structural diagram of a transfer component in a pretreatment device of the present invention is given;

[0037] Figure 6 for Figure 5 Schematic diagram of the structure of the transfer component and the grinding component.

[0038] Reference numerals:

[0039] 1. Pretreatment equipment; 11. Guide slide;

[0040] 2. Hot dip galvanizing equipment;

[0041] 3. Plastic spraying equipment;

[0042] 4. Conveying equipment;

[0043] 5. Cleaning assembly; 51. Collection tank; 52. Storage chamber; 53. Infusion plate; 54. Connecting shaft; 55. Nozzle; 56. Liquid circulation system; 57. Driving assembly; 571. Dual-axis motor; 572. Pulley 1; 573. Pulley 2; 574. Belt; 58. Water pump;

[0044] 6. Transfer assembly; 61. Transfer plate; 61a. Inclined section; 61b. Horizontal section; 62. Electric guide roller;

[0045] 7. Grinding assembly; 71. Mounting plate; 72. Electric grinding wheel;

[0046] 8. Pulling assembly; 81. Cylinder; 82. Clamping part. DETAILED DESCRIPTION

[0047] The technical solution of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0048] The components of the embodiments of the present disclosure generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure claimed, but merely represents selected embodiments of the present disclosure.

[0049] Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present disclosure.

[0050] In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0052] Example

[0053] like Figure 1-Figure 6 As shown, the present invention proposes an anti-corrosion treatment process for a corrugated guardrail plate used in a highway, the anti-corrosion treatment process also includes a treatment device, the treatment device includes a pre-treatment device 1, a hot-dip galvanizing device 2 and a plastic spraying device 3 which are arranged in sequence, and a conveying device 4 for conveying the corrugated guardrail plate is arranged between the pre-treatment device 1, the hot-dip galvanizing device 2 and the plastic spraying device 3;

[0054] The pretreatment equipment 1 is used for the pretreatment of corrugated guardrail plates to improve the adhesion of the corrugated guardrail plates. Cleaning agents such as organic solvents or alkaline solutions are used to thoroughly remove pollutants such as oil and grease on the surface of the guardrail plates to ensure the surface is clean to enhance the adhesion between the anti-corrosion layer and the substrate. The corrugated guardrail plates are also conveyed and polished through the transfer component 6 and the polishing component 7 provided in the pretreatment equipment 1.

[0055] After receiving the corrugated guardrail plate, the hot-dip galvanizing equipment 2 performs hot-dip galvanizing on its surface; the hot-dip galvanizing treatment includes: plating agent treatment: before hot-dip galvanizing, the pre-treated guardrail plate is immersed in a plating agent solution to allow the surface to adsorb a layer of plating agent to improve the wettability and adhesion of the zinc liquid to the guardrail plate. A mixed solution of common plating agents ammonium chloride and zinc chloride is used. The concentration, temperature and immersion time of the plating agent should be reasonably controlled according to actual conditions. Generally, the plating agent temperature is controlled at 70°C and the immersion time is about 3 minutes; hot-dip galvanizing operation: The treated guardrail plate is immersed in a high-temperature molten zinc liquid with a temperature of about 480°C and maintained for a certain period of time to allow the zinc liquid to fully react with the surface of the guardrail plate to form a uniform and uniform layer. The immersion time is usually determined according to factors such as the thickness and material of the guardrail plate, and is generally between 1 and 5 minutes. In the present embodiment, the immersion time is 4 minutes. During the immersion process, the composition and temperature of the zinc liquid must be controlled to be stable to avoid unstable quality of the galvanized layer due to fluctuations in the zinc liquid. Cooling and post-treatment: After hot-dip galvanizing, the guardrail plate is taken out of the zinc liquid and subjected to natural cooling or forced cooling treatment such as air cooling and water cooling to rapidly solidify the zinc layer and obtain a good organizational structure and performance. The cooled guardrail plate can be passivated as needed to further improve the corrosion resistance and surface quality of the zinc layer. The passivation solution generally uses chromate, phosphate and other solutions. After passivation treatment, rinse with clean water and dry.

[0056] The spray equipment 3 is used for spraying the corrugated guardrail board after hot-dip galvanizing; the spraying treatment includes: surface pretreatment: before spraying the surface of the hot-dip galvanized guardrail board, the surface of the zinc layer needs to be properly treated, specifically by grinding and degreasing to enhance the bonding strength between the spray coating and the zinc layer. The grinding adopts a light grinding method to remove impurities and oxide layers on the surface of the zinc layer to roughen the surface; the degreasing treatment uses organic solvent wiping or soaking cleaning to ensure that the surface is free of oil and other pollutants; electrostatic spraying: using electrostatic spraying equipment, the plastic powder is evenly sprayed on the surface of the guardrail board. Under the action of static electricity, the powder particles can be better adsorbed on the guardrail board to form a uniform powder coating. When spraying, the spraying voltage, current, powder flow rate, Parameters such as the distance between the spray gun and the guardrail board. Generally, the spraying voltage is 85kV, the current is 15μA, the powder flow rate is 260g / min, and the distance between the spray gun and the guardrail board is about 240mm to ensure the thickness and quality uniformity of the spray coating; Curing treatment: The sprayed guardrail board is sent to the curing furnace for high-temperature curing to melt, level and cross-link the powder coating to form a hard, smooth and corrosion-resistant spray coating. The curing temperature and time should be reasonably selected according to the type and performance of the powder coating. Generally, the curing temperature is 180℃-220℃, and the curing time is 10min-30min; during the curing process, the uniformity of temperature and time must be strictly controlled to prevent the coating performance from deteriorating due to local overheating or incomplete curing.

[0057] The pretreatment equipment 1 includes a cleaning component 5 and a grinding component 7 arranged thereon for degreasing and derusting the corrugated guardrail plate;

[0058] Among them, the cleaning component 5 includes a collecting tank 51 arranged on the inner wall of the bottom of the pretreatment device 1 and a storage cavity 52 opened on the inner wall of the top of the pretreatment device 1. Two groups of infusion plates 53 are also arranged above the collecting tank 51. Both ends of the two groups of infusion plates 53 are fixedly connected with connecting shafts 54. The connecting shaft 54 ​​on one side is rotatably installed with the inner wall of the pretreatment device 1 through a bearing, and the connecting shaft 54 ​​on the other side penetrates the pretreatment device 1. The connecting shaft 54 ​​rotatably arranged on the inner wall of the pretreatment device 1 supports the infusion plate 53 and drives it to rotate; a plurality of groups of nozzles 55 are arranged in an array on one side of the infusion plate 53, and the nozzles 55 are high-pressure nozzles. A driving component 57 that drives it and is located on the outer wall of the pretreatment device 1 is also provided on one side of the infusion plate 53. The driving component 57 also It includes a dual-axis motor 571 installed on the outer wall of the pretreatment equipment 1, the dual-axis motor 571 and the outer wall of the pretreatment equipment 1 are installed through a base, a connecting shaft 54 ​​that penetrates the pretreatment equipment 1 is connected to one side output end of the dual-axis motor 571; a pulley 1 572 is fixedly mounted on the outer ring of the output end on the other side of the dual-axis motor 571, a pulley 2 573 is arranged below the pulley 1 572, and a belt 574 for linkage between the pulley 1 572 and the pulley 2 573 is arranged between the pulley 1 572 and the pulley 2 573; the inner ring of the pulley 2 573 is fixedly connected to the connecting shaft 54 ​​connected to one side of the infusion plate 53 below, and the pulley 2 573 is driven by the rotation of the output end of the other end of the dual-axis motor 571, and then the infusion plate 53 arranged below is rotated in combination with the rotation of the pulley 2 573.

[0059] Reference Figure 4 As shown, a water pump 58 is arranged at the bottom of a bottom infusion plate 53, and the water pump 58 includes a soft water pipe and a water pump for connecting with the bottom infusion plate 53; a connecting hose is arranged between a top infusion plate 53 and a storage chamber 52, and a plurality of liquid drop holes are opened on the conveying belt of the conveying device 4 located above the collection tank 51, so that the liquid drops and is collected in the collection tank 51, so as to realize the recycling of the liquid; a liquid circulation system 56 is arranged between the storage chamber 52 and a top infusion plate 53, and the arrangement of the liquid circulation system 56 can realize that the upper infusion plate 53 can also be supplied with liquid through the collection tank 51, so as to realize multiple modes of liquid supply and transportation, further improve the recycling of the liquid, and reduce waste; combined with the arrangement of the liquid circulation system 56 between the collection tank 51 and the storage chamber 52, another way of circulating the liquid is realized.

[0060] Reference Figure 5 and Figure 6As shown, a transfer assembly 6 is also provided below the grinding assembly 7, which is located below the grinding assembly 7 and connected to the inner walls on both sides of the pretreatment equipment 1. The transfer assembly 6 also includes a transfer plate 61 and an electric guide roller 62 rotatably installed in the transfer plate 61 and protruding from the transfer plate 61. The corrugated guardrail plate is rotated and transported by setting a plurality of sets of electric guide rollers 62. The transfer plate 61 includes a horizontal section 61b arranged parallel to the conveying device 4, and the length of the horizontal section 61b is greater than the length of the corrugated guardrail plate. The grinding assembly 7 is arranged above the horizontal section 61b, and the distance between the grinding assembly 7 and one end of the horizontal section 61b is greater than half the length of the corrugated guardrail plate. The specific distance is set according to the length of the corrugated guardrail plate; the transfer plate 61 also includes an inclined section 61a obliquely arranged at both ends of the horizontal section 61b, the inclined angle of the inclined section 61a relative to the conveying plane of the conveying device 4 is less than 3°, and the bottom end of the inclined section 61a is in contact with the conveying plane of the conveying device 4, and the length of the inclined section 61a is greater than the length of the corrugated guardrail plate. Figure 6 The diagram is for schematic illustration only.

[0061] Reference Figure 5 and Figure 6 As shown, a mounting plate 71 matching the shape of the corrugated guardrail plate is also provided above the transfer assembly 6, and a plurality of electric grinding wheels 72 for grinding the corrugated guardrail plate are installed on the upper surfaces of the mounting plate 71 and the transfer plate 61, and a plurality of electric grinding wheels 72 are also installed on the inner wall of the horizontal section 61b, and the structure of the electric grinding wheel 72 on the horizontal section 61b is arranged relative to the electric grinding wheel 72 installed on the mounting plate 71, forming a "W"-shaped structure matching the corrugated guardrail plate.

[0062] like Figure 5 As shown, a pulling assembly 8 for clamping and pulling the corrugated guardrail plate is also provided on one side of the grinding assembly 7. A guide slide 11 is also provided on the side wall of the pretreatment equipment 1, and a clamping member 82 is slidably provided in the guide slide 11. The clamping member 82 includes a slider penetrating the guide slide 11 and an electric clamping plate for clamping the side of the corrugated guardrail plate. The electric clamping plate is a cylinder-driven clamping plate for clamping one side of the corrugated protective plate. A cylinder 81 is provided on one side of the slider. Combined with the setting of the cylinder 81, the slider and the electric clamping plate are pulled to complete the pulling of the corrugated guardrail plate and the grinding of the grinding assembly 7. The base end of the cylinder 81 is fixedly connected to the side of the pretreatment equipment 1.

[0063] This embodiment also proposes a processing process for processing the device, which specifically includes the following processing steps:

[0064] Pretreatment: Combined with the pretreatment equipment 1, the corrugated guardrail plate is subjected to degreasing, rust removal and passivation treatment to enhance the adhesion of the anti-corrosion layer on the outer surface of the corrugated guardrail plate;

[0065] Hot-dip galvanizing treatment: The corrugated guardrail plate is transported to the hot-dip galvanizing equipment 2 by the conveying device 4, and the plating agent treatment is initially performed. The treated guardrail plate is immersed in a high-temperature molten zinc liquid. The plating agent is a mixed solution of ammonium chloride and zinc chloride. The plating agent temperature is controlled at 70°C and the immersion time is 3 minutes. After hot-dip galvanizing, the corrugated guardrail plate is taken out of the zinc liquid and forcedly cooled by natural cooling, air cooling, and water cooling to rapidly solidify the zinc layer. After cooling, secondary passivation is performed;

[0066] Plastic spraying treatment: The corrugated guardrail plate after hot-dip galvanizing is surface polished, electrostatically sprayed and cured.

[0067] The above specific embodiment is only an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A process for anti-corrosion treatment of corrugated guardrail panels used on highways, the process further comprising treatment equipment, the treatment equipment comprising a pre-treatment device (1), a hot-dip galvanizing device (2) and a plastic spraying device (3) arranged in sequence, a conveying device (4) for conveying corrugated guardrail panels being arranged between the pre-treatment device (1), the hot-dip galvanizing device (2) and the plastic spraying device (3), the characteristics of which are: The pretreatment device (1) is used for pretreatment of corrugated guardrail plates to improve the adhesion of the corrugated guardrail plates; The hot-dip galvanizing equipment (2) performs hot-dip galvanizing treatment on the surface of the corrugated guardrail plate after receiving the corrugated guardrail plate; The plastic spraying equipment (3) is used for plastic spraying the corrugated guardrail plate after hot-dip galvanizing; The pretreatment equipment (1) comprises a cleaning component (5) and a grinding component (7) arranged thereon for degreasing and derusting the corrugated guardrail plate; The cleaning component (5) comprises a collecting tank (51) arranged on the inner wall of the bottom of the pretreatment device (1) and a storage cavity (52) opened on the inner wall of the top of the pretreatment device (1); two groups of infusion plates (53) arranged opposite to each other are arranged above the collecting tank (51); a plurality of groups of nozzles (55) are arranged in an array on one side of the infusion plates (53) arranged opposite to each other; a driving component (57) for driving the infusion plates (53) and located on the outer wall of the pretreatment device (1) is also arranged on one side of the infusion plates (53); A transfer assembly (6) is also provided below the polishing assembly (7) and is located below the polishing assembly (7) and is connected to the inner walls of both sides of the pretreatment equipment (1). The transfer assembly (6) also includes a transfer plate (61) and an electric guide roller (62) rotatably mounted in the transfer plate (61) and protruding from the transfer plate (61). A mounting plate (71) matching the shape of the corrugated guardrail plate is also provided above the transfer assembly (6); a plurality of electric grinding wheels (72) for grinding the corrugated guardrail plate are installed on the upper surfaces of the mounting plate (71) and the transfer plate (61); and a pulling assembly (8) for clamping and pulling the corrugated guardrail plate is also provided on one side of the grinding assembly (7).

2. The anti-corrosion treatment process for used corrugated guardrail panels on highways according to claim 1 is characterized in that: The side wall of the pretreatment equipment (1) is also provided with a guide slot (11) passing through it, and a clamping member (82) is slidably arranged in the guide slot (11), and the clamping member (82) includes a slider passing through the guide slot (11) and an electric clamping plate for clamping the side of the corrugated guardrail plate.

3. The anti-corrosion treatment process for used corrugated guardrail panels on highways according to claim 2 is characterized in that: A cylinder (81) is provided on one side of the sliding block, and a base end of the cylinder (81) is fixedly connected to a side surface of the pretreatment equipment (1).

4. The anti-corrosion treatment process for used corrugated guardrail panels on highways according to claim 1 is characterized in that: The transfer plate (61) comprises a horizontal section (61b) arranged parallel to the conveying device (4), and the length of the horizontal section (61b) is greater than the length of the corrugated guardrail plate; The transfer plate (61) further comprises inclined sections (61a) arranged obliquely at both ends of the horizontal section (61b), wherein the inclined section (61a) has an inclination angle of less than 3° relative to the conveying plane of the conveying device (4), and the bottom end of the inclined section (61a) contacts the conveying plane of the conveying device (4).

5. The anti-corrosion treatment process for used corrugated guardrail panels on highways according to claim 1 is characterized in that: Both ends of the two groups of infusion plates (53) are fixedly connected with connecting shafts (54); the connecting shafts (54) on one side are rotatably mounted on the inner wall of the pretreatment device (1) via a bearing, and the connecting shafts (54) on the other side penetrate the pretreatment device (1).

6. The anti-corrosion treatment process for used corrugated guardrail panels on highways according to claim 5 is characterized in that: The driving assembly (57) further comprises a dual-shaft motor (571) mounted on the outer side wall of the pretreatment device (1), and a connecting shaft (54) passing through the pretreatment device (1) is connected to one side output end of the dual-shaft motor (571); A pulley 1 (572) is fixedly mounted on the outer ring of the output end of the other side of the dual-axis motor (571), a pulley 2 (573) is arranged below the pulley 1 (572), and a belt (574) is arranged between the pulley 1 (572) and the pulley 2 (573) for linkage between the two. The inner ring of the second pulley (573) is fixedly connected to a connecting shaft (54) connected to one side of the infusion plate (53) below.

7. The anti-corrosion treatment process for used corrugated guardrail panels on highways according to claim 6 is characterized in that: A water pump (58) is arranged at the bottom of the infusion plate (53), and the water pump (58) comprises a soft water pipe and a water pump; A connecting hose is provided between the top infusion plate (53) and the receiving chamber (52), and a liquid circulation system (56) is provided between the receiving chamber (52) and the collecting tank (51), and between the receiving chamber (52) and the top infusion plate (53).

8. A process for anti-corrosion treatment of used corrugated guardrail panels on highways according to any one of claims 1 to 7, characterized in that: The specific processing steps include: Pretreatment: combining the pretreatment equipment (1) to perform degreasing, rust removal and passivation treatment on the corrugated guardrail plate, so as to enhance the adhesion of the anti-corrosion layer on the outer surface of the corrugated guardrail plate; Hot dip galvanizing treatment: The corrugated guardrail plate is transported to the hot dip galvanizing equipment (2) by means of the conveying equipment (4), and a plating agent treatment is initially performed. The treated guardrail plate is immersed in a high temperature molten zinc liquid. After hot dip galvanizing, the corrugated guardrail plate is taken out from the zinc liquid and forcedly cooled by natural cooling, air cooling, or water cooling to rapidly solidify the zinc layer. After cooling, a secondary passivation is performed. Plastic spraying treatment: The corrugated guardrail plate after hot-dip galvanizing is surface polished, electrostatically sprayed and cured.

9. The anti-corrosion treatment process for used corrugated guardrail panels on highways according to claim 8 is characterized in that: The plating assistant is a mixed solution of ammonium chloride and zinc chloride, the plating assistant temperature is controlled at 60° C.-80° C., and the immersion time is 1-3 minutes.

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