A highway used wave-shaped guardrail plate anti-corrosion treatment process

Abstract

The present application relates to the technical field of wave-shaped guardrail plate processing, and particularly relates to a highway used wave-shaped guardrail plate anti-corrosion processing technology. The anti-corrosion processing technology further comprises a processing device, the processing device comprises pretreatment equipment, hot galvanizing equipment and plastic spraying equipment arranged in sequence, and conveying equipment for conveying the wave-shaped guardrail plate is arranged between the pretreatment equipment, the hot galvanizing equipment and the plastic spraying equipment; the pretreatment equipment is used for pretreatment of the wave-shaped guardrail plate, and is used for improving the adhesion of the wave-shaped guardrail plate; the hot galvanizing equipment performs hot galvanizing treatment on the surface of the wave-shaped guardrail plate after receiving the wave-shaped guardrail plate; and the plastic spraying equipment is used for plastic spraying processing of the wave-shaped guardrail plate after the hot galvanizing treatment. The present application realizes integration of the wave-shaped guardrail plate processing device, and further perfects the process before the anti-corrosion layer of the wave-shaped guardrail plate is sprayed, enhances the adhesion of the anti-corrosion layer, further improves the anti-corrosion effect of the wave-shaped guardrail plate, and prolongs the service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wave-shaped guardrail processing, and particularly relates to a highway-used wave-shaped guardrail anticorrosion processing technology. BACKGROUND

[0002] The highway guardrail, also known as a wave-shaped beam guardrail, is a main form of a steel guardrail, which is a continuous structure formed by wave-shaped steel guardrail plates being spliced with each other and supported by main columns. The wave-shaped guardrail is composed of two wave-shaped steel guardrail plates and two stand columns fixedly clamped between the two wave-shaped steel guardrail plates. Since the wave-shaped guardrail material is exposed to the outside for a long time, in order to achieve safety and reliability, the wave-shaped guardrail material is required to have strong hardness and corrosion resistance. Therefore, the anticorrosion layer of the wave-shaped 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 highway guardrail stand column and wave-shaped guardrail plate two-in-one composite coating spraying method is disclosed. In the scheme, the workpiece to be sprayed can be effectively degreased, derusted and impurity-removed by spraying pretreatment, thereby helping to improve the spraying of the surface of the workpiece. However, the existing pretreatment process is realized by multiple devices, so the integration degree of the device is not high, and there is room for improvement in the processing technology of the wave-shaped guardrail plate. Therefore, the present application proposes a highway-used wave-shaped guardrail anticorrosion processing technology. SUMMARY

[0003] The purpose of the present application is to propose a highway-used wave-shaped guardrail anticorrosion processing technology with high comprehensiveness in view of the problems in the background art.

[0004] The technical scheme of the present application is a highway-used wave-shaped guardrail anticorrosion processing technology, which further comprises a processing device, the processing device comprises pretreatment equipment, hot galvanizing equipment and plastic spraying equipment arranged in sequence, and a conveying device for conveying the wave-shaped guardrail is arranged between the pretreatment equipment, the hot galvanizing equipment and the plastic spraying equipment.

[0005] The pretreatment equipment is used for pretreatment of the wave-shaped guardrail, and is used for improving the adhesion of the wave-shaped guardrail.

[0006] The hot galvanizing equipment performs hot galvanizing treatment on the surface of the wave-shaped guardrail after receiving the wave-shaped guardrail.

[0007] The plastic spraying equipment is used for plastic spraying processing of the wave-shaped guardrail after the hot galvanizing treatment.

[0008] The pretreatment equipment comprises a cleaning assembly and a polishing assembly arranged thereon and used for oil removal and rust removal treatment of the wave-shaped guardrail.

[0009] The cleaning assembly comprises a collecting groove arranged on the inner wall of the bottom of the pretreatment device and a receiving cavity arranged on the inner wall of the top of the pretreatment device, two groups of liquid delivery plates are arranged above the collecting groove, a plurality of groups of nozzles are arranged on the side of the liquid delivery plates arranged oppositely, and a driving assembly is arranged on one side of the liquid delivery plate and located outside the pretreatment device.

[0010] The polishing assembly is further provided with a transfer assembly located below the polishing assembly and connected with the inner walls of the two sides of the pretreatment device, the transfer assembly further comprises a transfer plate and an electric guide roller rotatably installed in the transfer plate and protruding from the transfer plate;

[0011] The transfer assembly is further provided with a mounting plate matched with the shape of the wave-shaped guardrail plate, a plurality of electric polishing wheels for polishing the wave-shaped guardrail plate are mounted on the upper surfaces of the mounting plate and the transfer plate, and a pulling assembly for clamping and pulling the wave-shaped guardrail plate is arranged on one side of the polishing assembly.

[0012] Optionally, a guide sliding port penetrating through the side wall of the pretreatment device is arranged on the side wall of the pretreatment device, and a clamping piece is slidably arranged in the guide sliding port, the clamping piece comprises a sliding block penetrating through the guide sliding port and an electric clamping plate for clamping the side of the wave-shaped guardrail plate.

[0013] Optionally, a gas cylinder is arranged on one side of the sliding block, and the base end of the gas cylinder is fixedly connected with the side of the pretreatment device.

[0014] Optionally, the transfer plate comprises a horizontal section arranged parallel to the conveying device, and the length of the horizontal section is greater than the length of the wave-shaped guardrail plate.

[0015] The transfer plate further comprises inclined sections arranged obliquely at the two ends of the horizontal section, the inclination angle of the inclined sections relative to the conveying plane of the conveying device is less than 3°, and the bottom end of the inclined section is in contact with the conveying plane of the conveying device.

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

[0017] Optionally, the driving assembly further comprises a double-shaft motor mounted on the outer side wall of the pretreatment device, and one connecting shaft penetrating through the pretreatment device is connected with one side output end of the double-shaft motor.

[0018] A belt pulley one is fixedly sleeved and mounted on the outer ring of the other side output end of the double-shaft motor, a belt pulley two is arranged below the belt pulley one, and a belt for linkage between the belt pulley one and the belt pulley two is arranged between the belt pulley one and the belt pulley two.

[0019] The inner ring of the belt pulley two is fixedly connected with the connecting shaft connected with one side of the liquid delivery plate.

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

[0021] A communication hose is arranged between the top one of the infusion plates and the receiving cavity, the receiving cavity is communicated with the collecting groove, and a liquid circulation system is arranged between the receiving cavity and the top one of the infusion plates.

[0022] Further, the application also proposes a highway corrugated guardrail plate anti-corrosion treatment process, which specifically comprises the following treatment steps:

[0023] Pretreatment: the pretreatment equipment is combined to realize oil removal, rust removal and passivation treatment of the corrugated guardrail plate, so as to enhance the adhesion of the anti-corrosion layer on the outer surface of the corrugated guardrail plate;

[0024] Hot galvanizing treatment: the corrugated guardrail plate is conveyed to the hot galvanizing equipment by combining the conveying of the conveying equipment, and the galvanizing aid is treated, the treated guardrail plate is immersed in high-temperature molten zinc liquid, after hot galvanizing, the corrugated guardrail plate is taken out from the zinc liquid, and natural cooling, air cooling and water cooling are used for forced cooling treatment, so that the zinc layer is rapidly solidified, and secondary passivation is carried out after cooling;

[0025] Plastic spraying treatment: the corrugated guardrail plate after hot galvanizing treatment is subjected to surface polishing, electrostatic plastic spraying and curing treatment.

[0026] Preferably, the galvanizing aid is a mixed solution of ammonium chloride and zinc chloride, the temperature of the galvanizing aid is controlled at 60-80 DEG C, and the soaking time is 1-3 minutes.

[0027] As described above, the application includes at least one of the following beneficial technical effects:

[0028] The application realizes pretreatment of the corrugated guardrail plate through the setting of the pretreatment equipment, and continuously conveys the corrugated guardrail plate by combining the setting of the conveying equipment, so that the anti-corrosion layer treatment process is continuously promoted, the overall process equipment has high integration degree, and the treatment process of the corrugated guardrail plate is improved;

[0029] Further, through the setting of the driving assembly and the spray head, the outer surface of the corrugated guardrail plate in conveying is cleaned, an organic solvent or an alkaline solution is used as a cleaning agent, and the oil stains, grease and other pollutants on the surface of the corrugated guardrail plate are completely removed, so that the surface is cleaned, the adhesion of the anti-corrosion layer and the base body is enhanced, and the two groups of spray heads are continuously swung and rotated for cleaning through the driving assembly, the impact force of the liquid on the corrugated guardrail plate is changed in the swinging process, so that the surface of the corrugated guardrail plate is fully and multi-pressuredly cleaned, and the cleaning effect is improved;

[0030] Furthermore, by setting up pulling components, transfer components, and grinding components, the corrugated guardrail panels can be conveyed and ground at specific locations. Combined with the shape of the mounting plate, the corrugated guardrail panels can be thoroughly ground. The pulling components assist in the grinding of the corrugated guardrail panels. The grinding of the corrugated guardrail panels increases the contact area with the anti-corrosion layer, further improving the adhesion of the anti-corrosion layer of the corrugated guardrail panels.

[0031] In summary, this invention integrates corrugated guardrail processing equipment, thereby improving the process before spraying the anti-corrosion layer of the corrugated guardrail, enhancing the adhesion of the anti-corrosion layer, further improving the anti-corrosion effect of the corrugated guardrail, and extending its service life. Attached Figure Description

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

[0033] Figure 2 for Figure 1 A frontal view diagram;

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

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

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

[0037] Figure 6 for Figure 5 A schematic diagram of the transfer and grinding components.

[0038] Figure label:

[0039] 1. Pre-treatment equipment; 11. Guide slide;

[0040] 2. Hot-dip galvanizing equipment;

[0041] 3. Powder coating 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. Drive assembly; 571. Dual-shaft 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, polishing assembly; 71, mounting plate; 72, electrically driven polishing wheel;

[0046] 8, pulling assembly; 81, air cylinder; 82, clamping piece. DETAILED DESCRIPTION

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

[0048] The components of the embodiments of the present disclosure generally described and shown in the drawings herein can be arranged and designed in various 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 claimed present disclosure, but merely represents selected embodiments of the present disclosure.

[0049] Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present disclosure.

[0050] In the description of the present disclosure, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "third" are only for descriptive purposes 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 explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0052] EMBODIMENT

[0053] As Figures 1-6 shown, the present application provides a highway used wave-shaped guardrail plate corrosion treatment process, the corrosion treatment process further comprises a treatment device, the treatment device comprises pretreatment equipment 1, hot galvanizing equipment 2 and plastic spraying equipment 3 arranged in sequence, and conveying equipment 4 for conveying wave-shaped guardrail plates is arranged between the pretreatment equipment 1, the hot galvanizing equipment 2 and the plastic spraying equipment 3.

[0054] The pretreatment device 1 is used for pretreatment of the corrugated guardrail plate, for improving the adhesion of the corrugated guardrail plate, using a cleaning agent such as an organic solvent or an alkaline solution, thoroughly removing contaminants such as oil stains and greases on the surface of the guardrail plate, ensuring the surface to be clean, so as to enhance the adhesion of the anticorrosive layer to the base body, and also conveying and polishing the corrugated guardrail plate through the transfer assembly 6 and the polishing assembly 7 arranged in the pretreatment device 1.

[0055] The hot galvanizing device 2 receives the corrugated guardrail plate and performs hot galvanizing treatment on the surface of the corrugated guardrail plate; the hot galvanizing treatment includes: fluxing agent treatment: before hot galvanizing, the pretreated guardrail plate is immersed in a fluxing agent solution, so that a layer of fluxing agent is adsorbed on the surface, so as to improve the wettability and adhesion of the zinc liquid to the guardrail plate, a common mixed solution of ammonium chloride and zinc chloride is used as the fluxing agent, and the concentration, temperature and soaking time of the fluxing agent and the like should be reasonably controlled according to the actual situation, generally the temperature of the fluxing agent is controlled at 70°C, and the soaking time is about 3 minutes; hot galvanizing operation: the treated guardrail plate is immersed in high-temperature molten zinc liquid with a temperature of about 480°C, and is kept for a certain time, so that the zinc liquid and the surface of the guardrail plate fully react, forming a uniform and dense zinc-iron alloy layer and a pure zinc layer, the immersion plating time is generally determined according to the thickness and material of the guardrail plate and the like, and is generally between 1-5 minutes, in this embodiment, the immersion plating time is 4 minutes, in the immersion plating process, the composition and temperature of the zinc liquid should be controlled to be stable, so as to avoid unstable quality of the galvanized layer due to fluctuation of the zinc liquid; cooling and post-treatment: after hot galvanizing, the guardrail plate is taken out of the zinc liquid and is subjected to natural cooling or forced cooling treatment such as air cooling and water cooling, so that the zinc layer is rapidly solidified to obtain good organizational structure and performance, the cooled guardrail plate can be subjected to passivation treatment according to needs, so as to further improve the corrosion resistance and surface quality of the zinc layer, the passivation liquid generally uses a chromate solution, a phosphate solution and the like, and the guardrail plate is washed clean and dried after the passivation treatment.

[0056] Powder coating equipment 3 is used for powder coating processing of corrugated guardrail panels after hot-dip galvanizing. The powder coating process includes: Surface pretreatment: Before powder coating, the zinc layer surface of the hot-dip galvanized guardrail panel needs appropriate treatment, specifically grinding and degreasing, to enhance the adhesion between the powder coating and the zinc layer. Grinding uses a light grinding method to remove impurities and oxide layers from the zinc layer surface, roughening the surface. Degreasing involves wiping or immersion cleaning with organic solvents to ensure the surface is free of oil and other contaminants. Electrostatic powder coating: Using electrostatic spraying equipment, plastic powder is evenly sprayed onto the guardrail panel surface. Under electrostatic action, the powder particles can better adhere to the guardrail panel, forming a uniform powder coating. During powder coating, the spraying voltage, current, and powder flow rate should be carefully controlled. Parameters such as the distance between the spray gun and the guardrail are generally as follows: spraying voltage is 85kV, current is 15μA, powder flow rate is 260g / min, and the distance between the spray gun and the guardrail is about 240mm to ensure the uniformity of the thickness and quality of the powder coating. Curing treatment: The powder-coated guardrail is sent to a curing oven for high-temperature curing, allowing the powder coating to melt, level, and cross-link, forming a hard, smooth, and corrosion-resistant powder 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 a decrease in coating performance due to localized overheating or incomplete curing.

[0057] Pretreatment equipment 1 includes a cleaning assembly 5 and a grinding assembly 7 disposed thereon for degreasing and derusting corrugated guardrail panels;

[0058] The cleaning assembly 5 comprises a collecting groove 51 arranged on the inner wall of the bottom of the pretreatment device 1 and a receiving cavity 52 arranged on the inner wall of the top of the pretreatment device 1. Two groups of liquid delivery plates 53 are arranged above the collecting groove 51. The two ends of the two groups of liquid delivery plates 53 are fixedly connected with connecting shafts 54. One side of the connecting shaft 54 is rotatably connected with the inner wall of the pretreatment device 1 through a bearing, and the other side of the connecting shaft 54 penetrates the pretreatment device 1. The connecting shaft 54 rotatably arranged on the inner wall of the pretreatment device 1 supports and drives the rotation of the liquid delivery plate 53. A plurality of groups of nozzles 55 are arranged on one side of the liquid delivery plate 53 in an array. The nozzles 55 are high-pressure nozzles. A driving assembly 57 is arranged on one side of the liquid delivery plate 53 and located outside the pretreatment device 1. The driving assembly 57 further comprises a double-shaft motor 571 mounted on the outer wall of the pretreatment device 1. The double-shaft motor 571 is mounted on the outer wall of the pretreatment device 1 through a base. One connecting shaft 54 penetrating the pretreatment device 1 is connected with one side of the output end of the double-shaft motor 571. A pulley one 572 is fixedly arranged on the outer circle of the other side of the output end of the double-shaft motor 571. A pulley two 573 is arranged below the pulley one 572. A belt 574 is arranged between the pulley one 572 and the pulley two 573 for linkage. The inner circle of the pulley two 573 is fixedly connected with the connecting shaft 54 connected with one side of the liquid delivery plate 53 below. The rotation of the output end of the other end of the double-shaft motor 571 drives the rotation of the pulley two 573, and the rotation of the pulley two 573 drives the rotation of the liquid delivery plate 53 arranged below.

[0059] Referring to Figure 4 The bottom of one of the liquid delivery plates 53 is provided with a water pump 58. The water pump 58 comprises a soft water pipe and a water pump for connecting with the bottom liquid delivery plate 53. A communication soft pipe is arranged between the top liquid delivery plate 53 and the receiving cavity 52. The receiving cavity 52 is communicated with the collecting groove 51. A plurality of liquid falling holes are arranged on the conveying belt of the conveying device 4 above the collecting groove 51 to realize the falling and collecting of the liquid in the collecting groove 51, realize the recycling of the liquid, and further improve the recycling of the liquid, reduce waste, and realize the recycling of the liquid in another way through the arrangement of the liquid circulation system 56 between the collecting groove 51 and the receiving cavity 52.

[0060] Referring to Figure 5 and Figure 6As shown, the lower part of the polishing assembly 7 is also provided with a transfer assembly 6 below it and connected with the inner walls of the two sides of the pretreatment device 1, the transfer assembly 6 also includes a transfer plate 61 and a motor guide roller 62 rotatably installed in the transfer plate 61 and protruding therefrom, the motor guide roller 62 is arranged in multiple groups to rotate and convey the wave-shaped guardrail plate, the transfer plate 61 includes a horizontal section 61b arranged parallel to the conveying device 4, the length of the horizontal section 61b is greater than the length of the wave-shaped guardrail plate, the polishing assembly 7 is arranged above the horizontal section 61b, the distance between the polishing assembly 7 and one end of the horizontal section 61b is greater than half the length of the wave-shaped guardrail plate, and the specific distance is set according to the length of the wave-shaped guardrail plate; the transfer plate 61 also includes an inclined section 61a arranged obliquely at both ends of the horizontal section 61b, the inclination 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, the length of the inclined section 61a is greater than the length of the wave-shaped guardrail plate, Figure 6 The figure is only a schematic diagram.

[0061] Referring to Figure 5 and Figure 6 As shown, the upper part of the transfer assembly 6 is also provided with a mounting plate 71 matched with the shape of the wave-shaped guardrail plate, a plurality of motor polishing wheels 72 for polishing the wave-shaped guardrail plate are mounted on the upper surface of the transfer plate 61 and the mounting plate 71, and a plurality of motor polishing wheels 72 are also mounted on the inner wall of the horizontal section 61b, the motor polishing wheels 72 on the horizontal section 61b are arranged opposite to the motor polishing wheels 72 mounted on the mounting plate 71, forming a "W" type structure matched with the wave-shaped guardrail plate.

[0062] As shown in Figure 5 One side of the polishing assembly 7 is also provided with a pulling assembly 8 for clamping and pulling the wave-shaped guardrail plate, and the side wall of the pretreatment device 1 is also provided with a guide sliding port 11 penetrating through it, a clamping piece 82 is slidingly arranged in the guide sliding port 11, the clamping piece 82 includes a sliding block penetrating through the guide sliding port 11 and an electric clamping plate for clamping the side surface of the wave-shaped guardrail plate, the electric clamping plate is a cylinder-driven clamping plate, which clamps one side of the wave-shaped guardrail plate, one side of the sliding block is provided with a cylinder 81, and the pulling of the sliding block and the electric clamping plate is combined with the arrangement of the cylinder 81, and then the pulling of the wave-shaped guardrail plate is completed in combination with the polishing of the polishing assembly 7, and the base end of the cylinder 81 is fixedly connected with the side surface of the pretreatment device 1.

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

[0064] Pretreatment: combined with the pretreatment device 1 to realize the oil removal, rust removal and passivation treatment of the wave-shaped guardrail plate, for enhancing the adhesion of the corrosion protection layer on the outer surface of the wave-shaped guardrail plate;

[0065] Hot-dip galvanizing treatment: The corrugated guardrail is conveyed to the hot-dip galvanizing equipment 2 by the conveying equipment 4. It is initially treated with flux. The treated guardrail is then immersed in the high-temperature molten zinc liquid. The flux is a mixed solution of ammonium chloride and zinc chloride. The flux temperature is controlled at 70℃ and the immersion time is 3 minutes. After hot-dip galvanizing, the corrugated guardrail is taken out of the zinc liquid and forced to cool by natural cooling, air cooling and water cooling to make the zinc layer solidify quickly. After cooling, a second passivation is performed.

[0066] Powder coating treatment: The corrugated guardrail panels after hot-dip galvanizing are then subjected to surface grinding, electrostatic powder coating, and curing.

[0067] The above specific embodiments are merely optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A corrosion protection process for existing corrugated guardrail panels used on highways, the corrosion protection process further comprising processing equipment, the processing equipment comprising a pretreatment device (1), a hot-dip galvanizing device (2), and a powder coating device (3) arranged sequentially, wherein a conveying device (4) for conveying the corrugated guardrail panels is provided between the pretreatment device (1), the hot-dip galvanizing device (2), and the powder coating device (3), characterized in that: The pretreatment equipment (1) is used for the pretreatment of the corrugated guardrail panel to improve its adhesion. The hot-dip galvanizing equipment (2) receives the corrugated guardrail plate and performs hot-dip galvanizing treatment on its surface; The powder coating equipment (3) is used for powder coating processing of corrugated guardrail panels after hot-dip galvanizing; The pretreatment equipment (1) includes a cleaning assembly (5) and a grinding assembly (7) disposed thereon for degreasing and rust removal of the corrugated guardrail panel; The cleaning component (5) includes a collection tank (51) disposed on the inner wall of the bottom of the pretreatment device (1) and a receiving cavity (52) opened on the inner wall of the top of the pretreatment device (1). Two sets of infusion plates (53) are also disposed above the collection tank (51). Multiple sets of nozzles (55) are arranged on one side of the infusion plates (53) that are opposite to each other. A driving component (57) that drives the infusion plate (53) and is located on the outer wall of the pretreatment device (1) is also disposed on one side of the infusion plate (53). Below the grinding assembly (7) is a transfer assembly (6) located below it and 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 installed in the transfer plate (61) and protruding therefrom. Above the transfer assembly (6) is a mounting plate (71) that matches the shape of the corrugated guardrail. Both the mounting plate (71) and the upper surface of the transfer plate (61) are equipped with multiple electric grinding wheels (72) for grinding the corrugated guardrail. On one side of the grinding assembly (7) is a pulling assembly (8) for clamping and pulling the corrugated guardrail.

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

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

4. The anti-corrosion treatment process for existing corrugated guardrail panels used on highways according to claim 1, characterized in that, 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 transfer plate (61) also includes inclined sections (61a) located at both ends of the horizontal section (61b). 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) is in contact with the conveying plane of the conveying device (4).

5. The anti-corrosion treatment process for existing corrugated guardrail panels used on highways according to claim 1, characterized in that, Both ends of the two sets of infusion plates (53) are fixedly connected to a connecting shaft (54). One side of the connecting shaft (54) is rotatably installed with the inner wall of the pretreatment equipment (1) through a bearing, and the other side of the connecting shaft (54) passes through the pretreatment equipment (1).

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

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

8. A corrosion protection process for existing corrugated guardrail panels used in highways according to any one of claims 1-7, characterized in that, Specifically, the processing steps include the following: Pretreatment: Combined with pretreatment equipment (1), the corrugated guardrail is degreased, derusted and passivated to enhance the adhesion of the anti-corrosion layer on the outer surface of the corrugated guardrail. Hot-dip galvanizing treatment: The corrugated guardrail is transported to the hot-dip galvanizing equipment (2) by the conveying equipment (4) and preliminarily treated with flux. The treated guardrail is then immersed in the high-temperature molten zinc liquid. After hot-dip galvanizing, the corrugated guardrail is taken out of the zinc liquid and forced to cool by natural cooling, air cooling, or water cooling to make the zinc layer solidify quickly. After cooling, it is then passivated a second time. Powder coating treatment: The corrugated guardrail panels after hot-dip galvanizing are then subjected to surface grinding, electrostatic powder coating, and curing.

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

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