CN214361629U - Anticorrosive environment-friendly composite coating structure of steel construction - Google Patents
Anticorrosive environment-friendly composite coating structure of steel construction Download PDFInfo
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- CN214361629U CN214361629U CN202023253860.6U CN202023253860U CN214361629U CN 214361629 U CN214361629 U CN 214361629U CN 202023253860 U CN202023253860 U CN 202023253860U CN 214361629 U CN214361629 U CN 214361629U
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Abstract
The utility model discloses an anticorrosive environment-friendly composite coating structure of steel construction, including steel construction base memberThe surface of (a) outwards in sequence is: thermally spraying a metal coating and a water-based paint coating; the cleanliness of the surface of the steel structure substrate is not lower than Sa21/2Grade and roughness of 40-100 μm; the thickness of the thermal spraying metal coating is 60-180 mu m; the water-based paint coating is a coating formed by coating a single water-based paint or a water-based paint composite coating formed by coating a water-based paint, and the thickness of the water-based paint coating is 60-120 mu m. The optimization of the design of the protective structure is realized by optimizing and matching the metal type and the coating thickness thereof, the optimization and matching of the water-based coating and the coating structure, the design life requirement, the corrosion environment and the like, and better economic and social benefits are formed. The thickness of the thermal spraying metal coating is designed to be 60-180 mu m, and the thickness of the water-based coating is designed to be 60-120 mu m, so that the innovation and optimization are carried out on the basis of combining the research and application results of the prior art, and the construction cost is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of the corrosion protection engineering, specifically be a steel construction anticorrosion environment-friendly composite coating structure.
Background
On the surface of the existing research and engineering application, the thermal spraying metal coating and the composite coating protection technology thereof have longer and more reliable protection performance than the traditional coating heavy-duty anticorrosive coating system, and have been rapidly popularized and applied to coal mines, ports and docks, civil large-scale steel structure buildings, bridges, high-speed railways, large ships and other large-scale industrial projects (such as petrifaction, electric power and ocean) as an excellent long-term anticorrosive technology.
CN200810190124.5 discloses a method and a process for arc spraying a composite anticorrosion coating system on a steel structure, wherein the anticorrosion coating system comprises the steps of removing rust and roughening the surface of the steel structure, then arc spraying an anodic metal coating, sequentially coating a nano modified epoxy seal coating on the metal coating as a primer coating, an epoxy micaceous iron coating or a nano modified epoxy micaceous iron coating as an intermediate coating, and a nano modified fluorine-containing polyurethane coating or a fluorine-containing polysiloxane coating or a siloxane modified acrylic polyurethane coating as a finish coating. CN200920102415.4 provides a corrosion-resistant support, and cast steel main part outer wall is provided with the electric arc and spouts the aluminium lamination, and the electric arc spouts the aluminium lamination outside spraying has heavy anticorrosive paint layer. Therefore, the surface of the existing thermal spraying metal coating is sealed and the coating is generally formed by coating solvent type coating, so that the solvent type coating can cause obvious environmental pollution when being used for coating, and the solvent type coating also needs to be used for maintenance and repair, so that the environment can be polluted and damaged again in the maintenance and repair process; if the water-based paint coating system is repaired and replaced, the adhesive force between the two coating interfaces with different properties is greatly reduced, and the protective performance and the service life of the whole repairing coating system are greatly reduced.
CN201922002801.2 discloses a thermal spraying rare earth alloy composite coating steel bar, the thermal spraying rare earth alloy composite coating comprises a thermal spraying rare earth alloy coating, a sealing coating and a finish coating from inside to outside in sequence, the sealing coating uses a water-based polyurethane primer, a sealing agent can permeate into the thermal spraying rare earth alloy coating, and a coating film of the sealing agent is not left as far as possible; the finish coat uses waterborne polyurethane finish with the thickness of 30-40 μm. The technology is used for preventing the corrosion of the steel bars inside the concrete, simultaneously, the good bonding strength of the coating steel bars and the concrete is kept under the consideration, the structural design of the whole waterproof coating is thinner, and the requirement of the long-term corrosion protection of the surface of a conventional steel structure cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steel construction anticorrosion environment-friendly composite coating structure adopts the durable reliable hot spraying metal coating of anticorrosive ability and water based paint coating complex, and is succinct high-efficient, and green is energy-conserving, has guaranteed the anticorrosive durable reliable of steel construction promptly, effectively solves the serious environmental protection problem that links such as current coating application and maintenance exist again.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a steel construction anticorrosion environment-friendly composite coating structure, includes the steel construction base member, the surface of steel construction base member outwards is in proper order: thermally spraying a metal coating and a water-based paint coating; the cleanliness of the surface of the steel structure substrate is not lower than Sa21/2 grade, and the roughness is 40-100 mu m; the thickness of the thermal spraying metal coating is 60-180 mu m; the water paint coating is a coating formed by coating a single water paint or a water paint composite coating formed by coating a water paint, and the thickness of the water paint coating is 60-120 mu m.
Preferably, when the water-based paint coating is formed by coating a single water-based paint, the water-based paint can be water-based epoxy paint or water-based weather-resistant paint, the water-based paint coating penetrates into the thermal spraying metal coating, and the thickness of the water-based paint coating above the surface of the thermal spraying metal coating is 60-90 μm.
Preferably, when the water-based paint coating is a water-based paint composite coating, the structure of the water-based paint composite coating from the surface of the thermal spraying metal coating to the outside sequentially comprises: waterborne epoxy primer coating, waterborne finish coating, wherein: the waterborne epoxy primer coating penetrates into the thermal spraying metal coating, and the thickness of the part of the waterborne epoxy primer coating above the surface of the thermal spraying metal coating is 10-50 mu m; the thickness of the water-based finish coat is 50-70 μm, and the thickness of the water-based paint coat is preferably 60-120 μm. The structural design is carried out aiming at the corrosion protection requirement and the design life of the steel structure service environment, an intermediate paint coating is omitted aiming at the general corrosion environment (such as indoor or inside a building), a matching system is formed by adopting a single water-based paint coating and a thermal spraying metal coating, the requirements of corrosion resistance and the design service life of the steel structure can be completely met, the follow-up maintenance can be directly carried out on-site maintenance coating operation by adopting the same type of water-based paint (such as water-based zinc-rich paint, water-based paint and the like) or the matching system thereof, and the steel structure is reliable in protection, clean and environment-friendly.
The water based paint scribbles the design and is water based paint composite biocoating structure, and water based finish paint coating can be according to the preferred ordinary finish paint of steel construction operation requirement or resistant finish paint of waiting, the utility model discloses can further improve the anticorrosive ability of steel construction anticorrosion environment-friendly composite biocoating structure entire system, satisfy under large-scale steel construction engineering long-life (like 100a) or the harsh corrosive environment (like marine environment) steel construction engineering long-life design and operation requirement, the utility model discloses water based paint composite biocoating structure can not cause harmful pollution influence for the environment at engineering site operation first, and the engineering can adopt close water based paint composite biocoating supporting system to carry out the site operation completely in subsequent maintenance process, accords with present and harsh environmental protection legal requirements from now on the future completely, forms good social economic benefits.
Preferably, the thermal spray metal coating is any one of a zinc coating, an aluminum coating, a zinc-aluminum alloy coating, a zinc-aluminum pseudo alloy coating, and a rare earth alloy coating.
Preferably, when the thermal spray metal coating is any one of a zinc coating, a zinc-aluminum alloy coating, and a zinc-aluminum pseudo alloy coating, the thermal spray metal coating preferably has a thickness of 60 to 120 μm.
Preferably, the thermal sprayed metal coating is a rare earth alloy coating, preferably 100-.
Preferably, the thermal spray metal coating is an aluminum or aluminum alloy coating, preferably having a thickness of 120-.
The metal type and the thickness of the thermal spraying metal coating are selected according to the design life of an actual steel structure and the corrosion type and grade of the service environment, so that the corrosion resistance of the coating is ensured to be reliable, and the cost performance of the coating is improved.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses steel construction anticorrosion environment-friendly composite coating structural design adopts hot spraying metal coating and water based paint coating to be compound, through metal type and coating thickness and water based paint and coating structure preferred, supporting, can upgrade to different service environment of steel construction, design life requirement, corrosive environment etc. and advance further preferred, realizes the optimization of protective structure design, forms better economic and social benefit. The thickness of the thermal spraying metal coating is designed to be 60-180 mu m, and the thickness of the water-based coating is designed to be 60-120 mu m, so that innovation and optimization are performed on the basis of combining research and application results of the prior art, and the construction cost is greatly reduced while the high corrosion resistance and high efficiency are ensured.
The water based paint coating saves the intermediate coat in the conventional composite coating structure, the utility model discloses the composite coating structure can further improve whole composite coating structure economic nature when guaranteeing the anticorrosive needs of steel construction.
The utility model adopts the structural design of the steel structure anti-corrosion environment-friendly composite coating, the scheme is simple, and the processes of thermal spraying, water-based paint coating operation and the like are environment-friendly and controllable; the scheme design is also beneficial to the maintenance and the maintenance of the anticorrosion coating of the steel structure to continue adopting the matched water-based paint and coating system, the anticorrosion is durable and reliable, the operation is green, energy-saving and environment-friendly, and the problems in the prior art are effectively solved.
Drawings
FIG. 1 is a first structural diagram of the corrosion-resistant environment-friendly composite coating of the steel structure of the utility model;
fig. 2 is the structural schematic diagram of the steel structure corrosion-resistant environment-friendly composite coating layer of the utility model II.
In the figure: 1-steel structure substrate, 2-thermal spraying metal coating, 3-water-based paint coating, 301-water-based epoxy primer coating and 302-water-based finish coating.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, a steel structure corrosion-resistant environment-friendly composite coating structure can be used for indoor steel structure corrosion protection and maintenance, and a thermal spraying metal coating 2 and a water-based paint coating 3 are sequentially arranged on the surface of a steel structure substrate 1 outwards;
after the surface of the steel structure substrate 1 is subjected to mechanical spray cleaning treatment, the cleanliness Sa21/2 grade and the roughness 40-80 mu m are achieved; the thermal spraying metal coating 2 is a thermal spraying zinc coating, and the thickness is 60-100 mu m; the water-based paint coating 3 is water-based polyurethane paint, the paint penetrates into the interior of the thermal spray zinc coating, and the thickness of the water-based polyurethane paint coating above the surface of the thermal spray zinc coating, namely the thickness of the water-based paint coating 3, is 60-70 mu m.
Refer to current anticorrosive design system and domestic and abroad hot spraying coating system engineering actual effect, the utility model discloses the design of steel construction anticorrosive environment-friendly composite coating structural design can satisfy indoor steel construction more than 70 years design life requirement, can realize 30a non-maintaining, has good economic social.
Example 2
As shown in FIG. 2, the steel structure anti-corrosion environment-friendly composite coating structure can be used for corrosion protection and maintenance of outdoor steel structures, and the surface of a steel structure substrate 1 is outwards provided with a thermal spraying metal coating 2 and a water-based paint coating 3 in sequence; the water-based paint coating 3 is a water-based paint composite coating structure and consists of a water-based epoxy primer coating 301 and a water-based finish coating 302.
After the surface of the steel structure substrate 1 is subjected to mechanical spray cleaning treatment, the cleanliness Sa3 grade and the roughness 40-100 mu m are achieved; the thermal spraying metal coating 2 is a thermal spraying aluminum coating with the thickness of 120-;
the surface of the thermal spraying metal coating 2 is coated with a water-based epoxy primer coating 301, the water-based epoxy primer penetrates into the thermal spraying aluminum coating, and the thickness of the water-based epoxy primer coating above the surface of the thermal spraying aluminum coating is 10-50 mu m. The surface of the water-based epoxy primer coating 301 is coated with a water-based finish coating 302 which can be formed by water-based polyurethane coating, the thickness of the water-based finish coating 302 is 50-70 mu m, and the thickness of the whole water-based coating composite coating structure, namely the water-based coating 3, is 60-120 mu m.
Refer to current anticorrosive design system and domestic and abroad hot spraying coating system engineering actual effect, the utility model discloses the design of steel construction anticorrosive environment-friendly composite coating structural design can satisfy outdoor steel construction more than 50 years design life-span requirements, can realize 30a non-maintaining, has good economic social.
Example 3
As shown in fig. 2, the steel structure corrosion-resistant environment-friendly composite coating structure can be used for indoor steel structure corrosion protection and maintenance, and the surface of a steel structure substrate 1 is outwards provided with a thermal spraying metal coating 2 and a water-based paint coating 3 in sequence; the water-based paint coating 3 is a water-based paint composite coating structure and consists of a water-based epoxy primer coating 301 and a water-based finish coating 302.
After the surface of the steel structure substrate 1 is subjected to mechanical spray cleaning treatment, the cleanliness Sa3 grade and the roughness 40-100 mu m are achieved; the thermal spraying metal coating 2 is a thermal spraying Ac aluminum rare earth alloy coating, and the thickness is 100-;
the surface of the thermal spraying metal coating 2 is a water-based epoxy primer coating 301, the water-based epoxy primer penetrates into the thermal spraying rare earth alloy coating, and the thickness of the water-based epoxy primer coating on the surface of the thermal spraying alloy coating, which can be measured, is 10-30 mu m. The surface of the water-based epoxy primer coating 301 is coated with a water-based finish coating 302 which can be formed by water-based epoxy resin paint, the thickness of the water-based finish coating 302 is 50-70 mu m, and the thickness of the whole water-based paint composite coating structure, namely the water-based paint coating 3, is 60-100 mu m.
Refer to current anticorrosive design system and domestic and abroad hot spraying coating system engineering actual effect, the utility model discloses the design of steel construction anticorrosive environment-friendly composite coating structural design can satisfy outdoor steel construction design life requirement more than 100 years, can realize 30a non-maintaining, has good economic and social.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a steel construction anticorrosion environment-friendly composite coating structure which characterized in that: including steel structure base member (1), the surface of steel structure base member (1) outwards is in proper order: a thermal spray metal coating (2) and a water-based paint coating (3);
the surface cleanliness of the steel structure substrate (1) is not lower than Sa21/2 grade, and the roughness is 40-100 mu m; the thickness of the thermal spraying metal coating (2) is 60-180 mu m; the water paint coating (3) is a coating formed by coating a single water paint or a water paint composite coating formed by coating a water paint, and the thickness is 60-120 mu m.
2. The steel structure corrosion-resistant environment-friendly composite coating structure according to claim 1, characterized in that: when the water-based paint coating (3) is a coating formed by coating a single water-based paint, the water-based paint is a water-based epoxy paint or a water-based weather-resistant paint, the water-based paint coating (3) penetrates into the thermal spraying metal coating (2), and the thickness of the part, above the surface of the thermal spraying metal coating (2), of the water-based paint coating (3) is 60-90 mu m.
3. The steel structure corrosion-resistant environment-friendly composite coating structure according to claim 1, characterized in that: when the water-based paint coating (3) is a water-based paint composite coating, the structure of the water-based paint composite coating is formed by sequentially spraying the surface of the metal coating (2) outwards: a water-based epoxy primer coating (301), a water-based topcoat coating (302), wherein: the water-based epoxy primer coating (301) penetrates into the thermal spraying metal coating (2), and the thickness of the water-based epoxy primer coating (301) above the surface of the thermal spraying metal coating (2) is 10-50 mu m; the thickness of the water-based finish coating (302) is 50-70 μm, and the thickness of the water-based paint coating (3) is preferably 60-120 μm.
4. The steel structure corrosion-resistant environment-friendly composite coating structure according to claim 1, characterized in that: the thermal spraying metal coating (2) is any one of a zinc coating, an aluminum coating, a zinc-aluminum alloy coating, a zinc-aluminum pseudo alloy coating and a rare earth alloy coating.
5. The steel structure corrosion-resistant environment-friendly composite coating structure according to claim 1, characterized in that: when the thermal spraying metal coating (2) is any one of a zinc coating, a zinc-aluminum alloy coating and a zinc-aluminum pseudo alloy coating, the thickness of the thermal spraying metal coating (2) is preferably 60-120 μm.
6. The steel structure corrosion-resistant environment-friendly composite coating structure according to claim 1, characterized in that: the thermal spraying metal coating (2) is a rare earth alloy coating, and the thickness is preferably 100-140 mu m.
7. The steel structure corrosion-resistant environment-friendly composite coating structure according to claim 1, characterized in that: the thermal spraying metal coating (2) is an aluminum or aluminum alloy coating, and the thickness is preferably 120-180 mu m.
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| CN202023253860.6U CN214361629U (en) | 2020-12-29 | 2020-12-29 | Anticorrosive environment-friendly composite coating structure of steel construction |
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