Steel structure surface anti-corrosion treatment spraying device and method
By designing a spraying device including pretreatment, clamping, flame spraying and laser remelting machine, the problem of difficulty in utilizing heat after flame spraying in the prior art is solved, and more efficient coating adhesion and performance improvements are achieved.
Patent Information
- Application Number
- CN202411948011.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
It is difficult for existing spraying devices to effectively utilize the heat after flame spraying between pretreatment and spraying stages, resulting in difficult monitoring and management of the surface status of steel.
A spraying device including a pretreatment unit, a clamping unit, a flame spray gun and a laser remelter are designed. By closely connecting the pretreatment and spraying stages, the laser remelter is used to process the post-spray coating to improve the heat utilization efficiency.
It achieves better adhesion of the coating, reduces coating loss, improves the density and performance of the coating, shortens production time and reduces energy consumption.
Smart Images
Figure CN119663162A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of spraying devices, and in particular to a spraying device and method for anti-corrosion treatment of the surface of a steel structure. Background Art
[0002] Steel structures are often used as load-bearing materials because of their good fatigue performance, wear resistance, low crack growth rate and excellent processing performance. Since steel structures are easily corroded and rusted by the surrounding environment such as moisture, oxygen, salt, etc., the surface of the steel structure is often coated to isolate these corrosive factors, protect the steel structure from corrosion, and extend its service life. Commonly used anti-corrosion coatings include paint, hot-dip galvanizing, etc.
[0003] As an advanced thermal spraying technology, flame spraying has the characteristics of low temperature and high speed. The sprayed particles can obtain greater impact kinetic energy in the high-speed flame flow, so that the particles can spread effectively during the deposition process on the substrate surface. The deposited coating has high density and is the preferred method for preparing cemented carbide coatings.
[0004] However, the existing spraying equipment separates the pretreatment stage from the spraying stage and uses manual transportation, which makes it difficult to monitor the surface condition of the steel during transportation. In addition, flame spraying requires cooling treatment, and during this process, the condition of the heat-affected zone of the steel is also difficult to confirm.
[0005] Therefore, it is necessary to provide a steel structure surface anti-corrosion treatment spraying device and method to solve the above problems. Summary of the invention
[0006] The purpose of the present invention is to provide a steel structure surface anti-corrosion treatment spraying device and method, so as to solve the problem that the existing device uses the steel after manual handling and is difficult to utilize the heat after flame spraying.
[0007] To achieve the above-mentioned objectives, the present invention provides a steel structure surface anti-corrosion spraying device, which includes a pretreatment unit, a clamping unit, a flame spray gun and a laser remelting machine; the pretreatment unit is arranged in front of the clamping unit, and two tracks are arranged behind the clamping unit, and the flame spray gun and the laser remelting machine are respectively arranged on the two tracks.
[0008] Preferably, the pretreatment unit comprises a polishing mechanism and a conveying mechanism, the polishing mechanism and the conveying mechanism are fixedly arranged inside the pretreatment unit, two polishing mechanisms are arranged, the two polishing mechanisms are respectively distributed horizontally and vertically inside the pretreatment unit, and the two polishing mechanisms are arranged behind the conveying mechanism; The polishing mechanism includes a polishing motor and a fixed shaft fixed on the inner wall of the pretreatment unit, and the fixed shaft is provided with a grinding disc for removing rust on the surface of the steel structure, the grinding discs are symmetrically arranged, and the material of the grinding discs is a chrome corundum grinding wheel; The conveying mechanism includes a transmission motor and a V-shaped conveying roller. The transmission motor is arranged on the inner wall of the pretreatment unit. The transmission motor is transmission-connected to a second bevel gear. The second bevel gear is transmission-connected to two first bevel gears. The first bevel gear and the V-shaped conveying roller are fixed by a transmission shaft. The V-shaped conveying roller is made of polyurethane.
[0009] Preferably, the clamping unit includes a chuck and a first rotating gear, a plurality of clamping blocks are arranged inside the chuck, the chuck is fixed to the first rotating gear through a threaded rod, the first rotating gear is meshed with the second rotating gear, and the second rotating gear is connected to the rotating motor.
[0010] Preferably, the wire arranged inside the flame spray gun is an aluminum wire, the aluminum wire contains trace zinc and nickel elements, the protective gas of the flame spray gun is argon, the fuel gas of the flame spray gun is any one of acetylene, hydrogen or natural gas, the speed of the particles emitted by the flame spray gun is 100-300 m / s, and the thickness of the sprayed coating is 50-100 μm.
[0011] Preferably, the laser remelting machine acts directly above the sprayed coating, the laser power of the laser remelting machine is 3-10 kW, and the scanning rate of the laser remelting machine is 200-350 mm / s.
[0012] The present invention also discloses a method for using a steel structure surface anti-corrosion treatment spraying device, comprising the following steps: S1: Put the steel pipe into the pretreatment unit, transport it inward by the V-shaped conveying roller, first grind the upper and lower surfaces of the steel pipe by the grinding disc, then grind the left and right surfaces of the steel pipe until there is no rust, then the steel pipe passes through the clamping unit, and after the tail of the steel pipe is grinded, the clamping block clamps the tail of the steel pipe; S2: starting the rotating motor to drive the second rotating gear to rotate, so that the first rotating gear drives the steel pipe on the chuck to rotate; S3: After the rotation speed of the steel pipe is stabilized, the flame spray gun sprays the surface of the steel pipe; S4: The laser remelting machine performs laser remelting on the coating of the steel pipe, and after the steel pipe is processed, manual spot check is performed.
[0013] Preferably, the laser remelting machine acts behind the flame spray gun.
[0014] Preferably, the surface roughness of the steel pipe after grinding in step S1 is 0.01-0.02 μm, and the volume ratio of the fuel gas to oxygen in the flame spray gun in step S3 is 1:1-1:1.5.
[0015] The advantages and positive effects of the steel structure surface anti-corrosion treatment spraying device and method described in the present invention are: 1. The present invention connects the pretreatment stage with the spraying stage, which helps the coating to adhere to the surface of the steel structure to the greatest extent, reduces the loss of the coating, and immediate spraying can reduce the time the workpiece is exposed to the air, reduce the risk of re-contamination, and ensure the quality of the coating; 2. Laser remelting is performed immediately after flame spraying. Since flame spraying has already made the coating material reach a higher temperature, less additional heat is required when laser remelting is performed immediately afterwards, which can shorten the heating time, improve production efficiency, and reduce energy consumption. In addition, the preheating process may expand the heat-affected zone and affect the microstructure and performance of the substrate. Direct laser remelting can more accurately control the heat treatment range and reduce thermal damage to the substrate. 3. Laser remelting can reduce the porosity inside the coating, promote good metallurgical bonding between the coating and the substrate and between coating layers, form a denser and more uniform coating, and improve the overall performance of the coating.
[0016] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of a steel structure surface anti-corrosion treatment spraying device of the present invention; Figure 2 A schematic diagram of a grinding disc of a steel structure surface anti-corrosion treatment spraying device according to the present invention; Figure 3 This is a schematic diagram of a conveying structure of a steel structure surface anti-corrosion treatment spraying device of the present invention; Figure 4 A schematic diagram of a clamping device of a steel structure surface anti-corrosion treatment spraying device according to the present invention; Figure 5 It is a schematic diagram of the rotating structure of a steel structure surface anti-corrosion treatment spraying device of the present invention; Reference numerals 1. Pretreatment unit; 11. Polishing motor; 12. Grinding disc; 13. Fixed shaft; 14. Transmission motor; 15. V-shaped conveyor roller; 16. Transmission shaft; 17. First bevel gear; 18. Second bevel gear; 2. Clamping unit; 21. Chuck; 22. Clamping block; 23. First rotating gear; 24. Second rotating gear; 25. Rotating motor; 26. Threaded pipe; 3. Flame spray gun; 4. Laser remelting machine; 5. Track; 6. Steel pipe. DETAILED DESCRIPTION
[0018] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.
[0019] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0020] The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.
[0021] According to the attached Figures 1 to 5 The present invention discloses a steel structure surface anti-corrosion spraying device, comprising a pretreatment unit 1, a clamping unit 2, a flame spray gun 3 and a laser remelting machine 4; the pretreatment unit 1 is arranged in front of the clamping unit 2, two tracks 5 are arranged behind the clamping unit 2, and the flame spray gun 3 and the laser remelting machine 4 are respectively arranged on the two tracks 5.
[0022] The pretreatment unit 1 includes a polishing mechanism and a conveying mechanism, which are fixedly arranged inside the pretreatment unit 1. Two polishing mechanisms are arranged, and the two polishing mechanisms are respectively distributed horizontally and vertically inside the pretreatment unit 1. The two polishing mechanisms are arranged behind the conveying mechanism. The polishing mechanism includes a polishing motor 11 and a fixed shaft 13 fixed on the inner wall of the pretreatment unit 1. The fixed shaft 13 is provided with a grinding disc 12 for removing rust from the surface of the steel structure. The grinding disc 12 is symmetrically arranged, so that two non-adjacent surfaces of the steel pipe 6 can be polished. The arrangement of two polishing mechanisms can polish its four surfaces. The material of the grinding disc 12 is a chrome corundum grinding wheel. The conveying mechanism includes a transmission motor 14 and a V-shaped conveying roller 15. The transmission motor 14 is arranged on the inner wall of the pretreatment unit 1. The transmission motor 14 is connected to the second bevel gear 18. The second bevel gear 18 is connected to the two first bevel gears 17. The first bevel gear 17 is fixed to the V-shaped conveying roller 15 through a transmission shaft 16. The transmission shaft 16 is fixed inside the pretreatment unit 1 by a conventional method. The V-shaped conveying roller 15 is made of polyurethane. There are 4 V-shaped conveying rollers 15, corresponding to the 4 corners of the cross section of the steel pipe 6, to ensure its smooth transportation, that is, in cooperation with the polishing mechanism, the steel pipe 6 can be polished and polished during the conveying process.
[0023] The clamping unit 2 includes a chuck 21 and a first rotating gear 23. A plurality of clamping blocks 22 are arranged inside the chuck 21. The clamping blocks 22 can clamp the ends of the steel pipe 6. The chuck 21 is fixed to the first rotating gear 23 through a threaded rod 22. The first rotating gear 23 is meshed with the second rotating gear 24. The second rotating gear 24 is connected to the rotating motor 25.
[0024] The wire material set inside the flame spray gun 3 is aluminum wire, which contains trace zinc and nickel elements. The fuel gas of the flame spray gun 3 is any one of acetylene, hydrogen or natural gas. The speed of the particles emitted by the flame spray gun 3 is 100-300 m / s, and the thickness of the sprayed coating is 50-100 μm. The mass ratio of zinc to nickel is 1:1~1:1.3. The volume ratio of fuel gas to oxygen in the flame spray gun 3 is 1:1-1:1.5 The laser remelting machine 5 acts on the sprayed coating, the laser power of the laser remelting machine 5 is 3-10kw, and the scanning rate of the laser remelting machine is 200-350mm / s.
[0025] A method for using a steel structure surface anti-corrosion treatment spraying device, comprising the following steps: S1: Put the steel pipe 6 into the pretreatment unit 1, transport it inward by the V-shaped conveying roller 15, first grind the left and right sides of the steel pipe 6 by the grinding disc 12, then grind the upper and lower sides of the steel pipe 6 until there is no rust, and the surface roughness of the steel pipe 6 is 0.01-0.02μm, then the steel pipe 6 passes through the clamping unit 2, and when the tail of the steel pipe 6 is grinded, the clamping block 2 clamps the tail of the steel pipe 6; S2: Start the rotating motor 25 to drive the second rotating gear 24 to rotate, so that the first rotating gear 23 drives the steel pipe 6 on the chuck 21 to rotate; S3: After the rotation speed of the steel pipe 6 is stabilized, the flame spray gun 3 sprays the surface of the steel pipe 6; S4: The laser remelting machine 4 performs laser remelting on the coating of the steel pipe 6. After the steel pipe 6 is processed, a manual spot check is performed.
[0026] Therefore, the present invention adopts a steel structure surface anti-corrosion spraying device and method of the above structure, which solves the problem that the existing device uses manually transported treated steel and is difficult to utilize the heat after flame spraying.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.
Claims
1. A steel structure surface anti-corrosion treatment spraying device, characterized in that: It includes a pretreatment unit, a clamping unit, a flame spray gun and a laser remelting machine; the pretreatment unit is arranged in front of the clamping unit, two tracks are arranged behind the clamping unit, and the flame spray gun and the laser remelting machine are respectively arranged on the two tracks.
2. The anti-corrosion spraying device for steel structure surface according to claim 1, characterized in that: The pretreatment unit comprises a polishing mechanism and a conveying mechanism, the polishing mechanism and the conveying mechanism are fixedly arranged inside the pretreatment unit, two polishing mechanisms are arranged, the two polishing mechanisms are respectively distributed horizontally and vertically inside the pretreatment unit, and the two polishing mechanisms are arranged behind the conveying mechanism; The polishing mechanism includes a polishing motor and a fixed shaft fixed on the inner wall of the pretreatment unit, and the fixed shaft is provided with a grinding disc for removing rust on the surface of the steel structure, the grinding discs are symmetrically arranged, and the material of the grinding discs is a chrome corundum grinding wheel; The conveying mechanism includes a transmission motor and a V-shaped conveying roller. The transmission motor is arranged on the inner wall of the pretreatment unit. The transmission motor is transmission-connected to a second bevel gear. The second bevel gear is transmission-connected to two first bevel gears. The first bevel gear and the V-shaped conveying roller are fixed by a transmission shaft. The V-shaped conveying roller is made of polyurethane.
3. The anti-corrosion spraying device for steel structure surface according to claim 1, characterized in that: The clamping unit includes a chuck and a first rotating gear. A plurality of clamping blocks are arranged inside the chuck. The chuck is fixed to the first rotating gear through a threaded rod. The first rotating gear is meshed with a second rotating gear. The second rotating gear is connected to a rotating motor.
4. The anti-corrosion spraying device for steel structure surface according to claim 1, characterized in that: The wire arranged inside the flame spray gun is aluminum wire, which contains trace zinc and nickel elements. The fuel gas of the flame spray gun is any one of acetylene, hydrogen or natural gas. The speed of the particles emitted by the flame spray gun is 100-300 m / s, and the thickness of the sprayed coating is 50-100 μm.
5. The anti-corrosion spraying device for steel structure surface according to claim 4, characterized in that: The laser remelting machine acts on the sprayed coating, the laser power of the laser remelting machine is 3-10kw, and the scanning rate of the laser remelting machine is 200-350mm / s.
6. The method for using the anti-corrosion spraying device for steel structure surface according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: Put the steel pipe into the pretreatment unit, transport it inward by the V-shaped conveying roller, first grind the upper and lower surfaces of the steel pipe by the grinding disc, then grind the left and right surfaces of the steel pipe until there is no rust, then the steel pipe passes through the clamping unit, and after the tail of the steel pipe is grinded, the clamping block clamps the tail of the steel pipe; S2: starting the rotating motor to drive the second rotating gear to rotate, so that the first rotating gear drives the steel pipe on the chuck to rotate; S3: After the rotation speed of the steel pipe is stabilized, the flame spray gun sprays the surface of the steel pipe; S4: The laser remelting machine performs laser remelting on the coating of the steel pipe, and after the steel pipe is processed, manual spot check is performed.
7. The method for using the anti-corrosion spraying device for steel structure surface according to claim 6, characterized in that: The laser remelting machine acts behind the flame spray gun.
8. The method for using the anti-corrosion spraying device for steel structure surface according to claim 6, characterized in that: The surface roughness of the steel pipe after grinding in step S1 is 0.01-0.02 μm, and the volume ratio of the fuel gas to oxygen in the flame spray gun in step S3 is 1:1-1:1.5.