CN116550578A - Marine climate environment steel structural member and bolt corrosion prevention construction process thereof - Google Patents
Marine climate environment steel structural member and bolt corrosion prevention construction process thereof Download PDFInfo
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- CN116550578A CN116550578A CN202310502918.5A CN202310502918A CN116550578A CN 116550578 A CN116550578 A CN 116550578A CN 202310502918 A CN202310502918 A CN 202310502918A CN 116550578 A CN116550578 A CN 116550578A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 72
- 239000010959 steel Substances 0.000 title claims abstract description 72
- 238000010276 construction Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005536 corrosion prevention Methods 0.000 title claims abstract description 24
- 239000003973 paint Substances 0.000 claims abstract description 60
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 26
- 238000005260 corrosion Methods 0.000 claims abstract description 26
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000004381 surface treatment Methods 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims abstract description 11
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 11
- 239000004814 polyurethane Substances 0.000 claims abstract description 11
- 229920002635 polyurethane Polymers 0.000 claims abstract description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000007797 corrosion Effects 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000005422 blasting Methods 0.000 claims abstract description 3
- 238000005498 polishing Methods 0.000 claims abstract description 3
- 239000003292 glue Substances 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000005246 galvanizing Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004587 polysulfide sealant Substances 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000000016 photochemical curing Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 11
- 238000010422 painting Methods 0.000 description 4
- 230000037452 priming Effects 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
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- 239000007769 metal material Substances 0.000 description 1
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- 238000002156 mixing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2503/00—Polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a marine climate environment steel structural member and a bolt corrosion prevention construction process thereof, wherein the process comprises the following steps: s1, cleaning the surface of a steel structural member: 1) Removing surface attachments; 2) Blasting or polishing and rust removing on the surface; 3) The high pressure gas sweeps the surface; s2, coating the steel structure primer: spraying at least one low surface treatment pure epoxy resin primer within 4-6 hours after finishing the surface treatment in the step S1 to form a primer film on the surface of the steel structure, wherein in the drying process of the film, the surrounding air is kept clean, and if dust flies upwards, the coating cannot be performed; s3, coating the steel structure finish paint: at least one acrylic polyurethane weather-resistant finish paint is sprayed on the primer paint film to form a finish paint film on the surface of the steel structure, and the process is simple, the design is reasonable, the binding force between the anti-corrosion coating and the steel structure substrate is strong, the construction quality of the anti-corrosion coating is ensured, the engineering progress is improved, and the difficult problem of corrosion resistance of the steel structure in coastal areas is solved.
Description
Technical Field
The invention relates to the technical field of steel structure corrosion prevention, in particular to a marine climate environment steel structure member and a bolt corrosion prevention construction process thereof.
Background
At present, a large number of steel structures are needed in basic facilities such as coastal power plants or wharfs, bridges, offshore operation platforms and the like in China, the steel structures are exposed to the atmospheric environment for a long time and are corroded to different degrees under the influence of severe environments such as coastal high temperature, high humidity and high salt mist, the mechanical properties such as strength, plasticity and toughness of metal materials are obviously reduced by corrosion, and local corrosion such as pitting corrosion or sudden stress corrosion cracking is extremely easy to cause safety accidents, so that corrosion prevention of the steel structures is necessary in marine climate environments.
Disclosure of Invention
The invention aims to provide a marine climate environment steel structural member and a bolt anti-corrosion construction process thereof, so as to solve the problems in the background technology.
In order to achieve the above purpose, the invention provides the following technical scheme: an anticorrosive construction process for a steel structural member in a marine climate environment comprises the following steps:
s1, cleaning the surface of a steel structural member: 1) Removing surface attachments; 2) Blasting or polishing and rust removing on the surface; 3) The high pressure gas sweeps the surface;
s2, coating the steel structure primer: spraying at least one low surface treatment pure epoxy resin primer within 4-6 hours after finishing the surface treatment in the step S1 to form a primer film on the surface of the steel structure, wherein in the drying process of the film, the surrounding air is kept clean, and if dust flies upwards, the coating cannot be performed;
s3, coating the steel structure finish paint: and spraying at least one acrylic polyurethane weather-resistant finish paint on the primer paint film to form a finish paint film on the surface of the steel structure.
Furthermore, the step S2 is preceded by blocking the area where the rust removal work cannot be performed (the narrow gap or the surface of the steel structure or the equipment where the rust removal cannot be performed due to the narrow space in the construction area) by adopting measures such as welding, polysulfide sealant or putty; and pre-coating at least one primer on the steel structure parts (such as the original rust parts, steel structure corners, connecting parts, special-shaped structures and the like) which are easy to rust in time after rust removal.
In step S1, the steel structure surface is sandblasted to remove rust to level 2.5, and the area incapable of being removed by spraying (such as all non-covered heat-insulating metal pipes, hanging frame manual operation, etc.) is manually removed to level more than level St 2.
Further, in the step S2, the first primer is applied within 4 to 6 hours after the surface treatment is qualified, and the surface is treated again for more than the predetermined time.
Further, in the step S2, at least two low-surface-treatment pure epoxy resin primers are sprayed on the surface of the steel structure in the common area, and the thickness of a dry film of the primer paint film is more than or equal to 240 mu m; at least three low surface treatment pure epoxy resin primer coats the surface of the steel structure in the high salt spray and condensation area, and the thickness of a primer film dry film is more than or equal to 320 mu m.
Furthermore, the paint is coated by high-pressure airless spraying in principle, and for components with the maximum width of less than 50mm in a single direction, the mode of brushing or rolling coating is adopted, the viscosity, the consistency and the dilution of the paint are well controlled during the coating, and the paint is fully stirred during the blending, so that the color and the viscosity of the paint are uniform. The colors should be completely consistent, and the color uniformity is maintained. When in coating, the paint is not coated by mistake and is not leaked, and the coating is free from peeling and rust returning. The coating should be even, no obvious wrinkling, no bubbles, good adhesion, clear and clean color separation lines.
In the step S3, at least two acrylic polyurethane weather-resistant top coats are sprayed on the primer paint film, and the thickness of the top coat paint film dry film is more than or equal to 80 mu m; the total paint film thickness of the steel structure surface in the common area is more than or equal to 320 mu m, and the total paint film thickness of the steel structure surface in the high salt spray and condensation area is more than or equal to 400 mu m.
Furthermore, the volume solid content of the low surface treatment pure epoxy resin primer is not less than 70%, the adhesive force is not less than 5Mpa, the bending property is not more than 2mm, the impact resistance is not less than 50cm, the surface drying time of a paint film is not more than 4 hours, and the real drying time is not more than 24 hours; the acrylic polyurethane weather-resistant finishing paint is required to have the volume solid content not lower than 55%, the adhesive force not lower than 5Mpa, the bending property not lower than 2mm, the impact resistance not lower than 50cm, the weather resistance not lower than 1000 hours, the grade 1, the paint film surface drying time not higher than 2 hours and the real drying time not higher than 24 hours.
Furthermore, in the process, the steel structure below the grating plate needs to be removed firstly and then subjected to rust removal and corrosion prevention, and after the corrosion prevention is qualified, the grating plate is assembled back by hot galvanizing or stainless steel mounting, and the grating plate is not assembled back by welding.
The marine climate environment steel structure bolt corrosion prevention construction process comprises the following steps:
s1, cleaning the surface of a bolt base material;
s2, covering the surface of the bolt with anti-corrosion glue;
and S3, photo-curing the anti-corrosion adhesive.
Further, the step S2 specifically comprises the steps of injecting a proper amount of anti-corrosion glue into a mold matched with the bolt by using a glass glue gun; and then directly reversely buckling the die after glue injection into the bolt and rotating the die left and right to uniformly cover the bolt with the anti-corrosion glue.
Further, the construction environment requirements of all the above processes are as follows: 1) The temperature is at least 4 ℃ below zero and at least 3 ℃ above the dew point;
2) Relative humidity: up to 80%, coating is not required when dew condensation exists on the treated surface;
3) The construction is not allowed in rainy days or in high wind days with more than five levels; the construction method can not meet rain within 8 hours after the construction is finished (weather forecast is attended, construction period is reasonably arranged, and the construction needs to be reworked if meeting rain within 8 hours after the construction is finished), and the construction can be carried out again after the base material is dried within 1-2 days after the construction is finished.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a technical approach for the on-site construction of the anti-corrosion composite coating in the marine environment, adopts the low-surface treatment of the pure epoxy resin primer and the aliphatic acrylic polyurethane finish paint, does not need intermediate paint, has simple construction process, good corrosion resistance, good weather resistance and long protection life;
2. the rust removal construction process and the rust removal grade are strictly adhered to, different painting schemes, the number of painting channels and the thickness requirement of paint films of all channels are designed according to the steel structure in different areas, the adhesion between the primer and the steel structure surface is enhanced, and the combination of the primer and the steel structure surface is firmer;
3. according to the marine climate environment characteristics, the construction time, construction environment and coating quality of the on-site anti-corrosion coating are specified in detail, the construction quality of the anti-corrosion coating is guaranteed, the engineering progress is improved, the maintenance cost of the steel structure is saved, and the reference significance is provided for the anti-corrosion construction of the steel structure in coastal areas.
Drawings
FIG. 1 is a flow chart of an anti-corrosion construction process of a steel structural member in marine climate environment;
fig. 2 is a flow chart of the marine climate environment steel structure bolt corrosion prevention construction process.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, based on the embodiments of the invention, which would be apparent to one of ordinary skill in the art without making any inventive effort are intended to be within the scope of the invention.
As shown in fig. 1, the corrosion prevention construction process for the steel structural member in the marine climate environment comprises the following steps:
s1, cleaning the surface of a steel structural member: 1) Removing attachments such as surface grease, dirt and the like;
2) Adopting sand blasting to remove rust to achieve Sa2.5 level, and removing finishing paint in other areas with perfect paint surfaces and ensuring that the surface roughness meets the technical requirement of coating; the areas which cannot be derusted by spraying, such as (all non-covered heat-preserving metal pipelines and hangers), are derusted manually to reach St2 level or above;
3) Thoroughly sweeping the surface of the steel structure by compressed air, and removing surface dust, salt and the like;
4) Sealing the areas where rust removal cannot be performed by adopting measures such as welding, polysulfide sealant or putty;
5) After rust removal, the original rust-rusted parts, steel structure corners, connecting parts, special-shaped structures and other parts which are easy to rust are painted and pre-coated with at least one primer.
S2, coating the steel structure primer: after the surface treatment is qualified, a first low-surface treatment pure epoxy resin primer is sprayed by adopting high-pressure airless spraying within 4-6 hours, so that the steel structure is prevented from being rusted back in marine climate environment, and the surface is treated for the second time beyond the time; after the first priming paint is dried, spraying a second priming paint, wherein the thickness of a dry film of a priming paint film is more than or equal to 240 mu m; if the steel structure is in a special area with high salt fog and condensation, a third primer is required to be sprayed, and the thickness of a primer film dry film is more than or equal to 320 mu m.
S3, coating the steel structure finish paint: and (3) adopting high-pressure airless spraying at least one acrylic polyurethane weather-resistant finish paint to the primer paint film so as to form a finish paint film on the surface of the steel structure, and spraying 1 acrylic polyurethane weather-resistant finish paint after the first finish paint is dried, wherein the dry film thickness of the finish paint film is more than or equal to 80 mu m.
In this example, the paint used above requires (1) a low surface treatment pure epoxy primer: the low surface treatment epoxy primer applied to the manual mechanical rust removal ST2 level or the sand blasting rust removal Sa2 level has the volume solid content not lower than 70 percent (detection standard GB/T1725), the adhesive force (pull-open method) not lower than 5Mpa (detection standard GB 5210), the bending property not lower than 2mm (detection standard GB/T6742), the impact resistance not lower than 50cm (detection standard GB/T1732), the paint film surface drying time not longer than 4 hours, and the real drying time not longer than 24 hours (25 ℃ detection standard GB/T1728);
(2) Acrylic polyurethane weather-resistant finishing paint: the volume solid content is not lower than 55% (detection standard GB/T1725), the adhesive force (pull-open method) is not less than 5Mpa (detection standard GB 5210), the bending property is not more than 2mm (detection standard GB/T6742), the impact resistance is not lower than 50cm (detection standard GB/T1732), the weather resistance (artificial accelerated aging experiment and matched coating) is 1000 hours, the grade 1 (detection standard GB/T1865), the paint film surface dry time is not more than 2 hours, the real dry time is not more than 24 hours (25 ℃ detection standard GB/T1728), and the recoating property is realized: recoating is unobstructed.
In the embodiment, the steel structure positioned below the grating plate in the process needs to remove the grating plate first and then perform rust removal and corrosion prevention work, and after the corrosion prevention is qualified, the grating plate is assembled back by hot galvanizing or stainless steel mounting clips, the grating plate is not assembled back by welding, and the paint film is prevented from being damaged by welding
In the embodiment, the dry film thickness of the primer paint film is more than or equal to 240 mu m, the dry film thickness of the top paint film is more than or equal to 80 mu m, the total paint film thickness is more than or equal to 320 mu m, the total painting is more than 3-4 times, the dry film thickness of the primer paint film in special areas (such as high salt fog and condensation areas) is more than or equal to 320 mu m, the dry film thickness of the top paint film is more than or equal to 80 mu m, the total paint film thickness is more than or equal to 400 mu m, and the total painting is more than 4-5 times.
As shown in fig. 2, the marine climate environment steel structure bolt corrosion prevention construction process comprises the following steps:
1) Cleaning greasy dirt and dust on the surface of the substrate;
2) Injecting a proper amount of anti-corrosion glue into a matched mold by using a glass glue gun;
3) Directly reversely buckling the die after glue injection into the bolt and rotating the die left and right to uniformly cover the bolt with the anti-corrosion glue;
4) Outdoor direct sunlight irradiation curing, and indoor sunlight-free positions can be cured by using matched ultraviolet lamps;
5) After curing is completed, the steel structural member can be assembled.
Although the invention has been described with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the invention.
Claims (10)
1. The marine climate environment steel structure member corrosion prevention construction process is characterized by comprising the following steps of:
s1, cleaning the surface of a steel structural member: 1) Removing surface attachments; 2) Blasting or polishing and rust removing on the surface; 3) The high pressure gas sweeps the surface;
s2, coating the steel structure primer: spraying at least one low surface treatment pure epoxy resin primer within 4-6 hours after finishing the surface treatment in the step S1 so as to form a primer paint film on the surface of the steel structure;
s3, coating the steel structure finish paint: and spraying at least one acrylic polyurethane weather-resistant finish paint on the primer paint film to form a finish paint film on the surface of the steel structure.
2. The marine climate environment steel structural member corrosion prevention construction process according to claim 1, wherein: the step S2 is preceded by plugging the areas which cannot be derusted by adopting measures such as welding, polysulfide sealant or putty; and pre-coating at least one primer on the steel structure part easy to rust in time after rust removal.
3. The marine climate environment steel structural member corrosion prevention construction process according to claim 1, wherein: in the step S1, the surface of the steel structure is subjected to sand blasting and rust removal to reach the Sa2.5 level, and the area incapable of being subjected to spray rust removal is subjected to manual rust removal to reach the St2 level or above.
4. The marine climate environment steel structural member corrosion prevention construction process according to claim 1, wherein: in the step S2, a first primer is applied within 4 to 6 hours after the surface treatment is qualified, and the surface is treated again after the prescribed time is exceeded.
5. The marine climate environment steel structural member corrosion prevention construction process according to claim 1, wherein: in the step S2, at least two low-surface-treatment pure epoxy resin primers are sprayed on the surface of the steel structure in a common area, and the thickness of a dry film of the primer paint film is more than or equal to 240 mu m; at least three low surface treatment pure epoxy resin primer coats the surface of the steel structure in the high salt spray and condensation area, and the thickness of a primer film dry film is more than or equal to 320 mu m.
6. The marine climate environment steel structural member corrosion prevention construction process according to claim 5, wherein: in the step S3, at least two acrylic polyurethane weather-resistant top coats are sprayed on the primer paint film, and the dry film thickness of the top coat paint film is more than or equal to 80 mu m; the total paint film thickness of the steel structure surface in the common area is more than or equal to 320 mu m, and the total paint film thickness of the steel structure surface in the high salt spray and condensation area is more than or equal to 400 mu m.
7. The marine climate environment steel structural member corrosion prevention construction process according to claim 6, wherein: the low-surface-treatment pure epoxy resin primer has the required volume solid content not lower than 70%, the adhesive force not lower than 5Mpa, the flexibility not lower than 2mm, the impact resistance not lower than 50cm, the paint film surface drying time not longer than 4 hours and the real drying time not longer than 24 hours;
the acrylic polyurethane weather-resistant finishing paint is required to have the volume solid content not lower than 55%, the adhesive force not lower than 5Mpa, the bending property not lower than 2mm, the impact resistance not lower than 50cm, the weather resistance not lower than 1000 hours, the grade 1, the paint film surface drying time not higher than 2 hours and the real drying time not higher than 24 hours.
8. The marine climate environment steel structural member corrosion prevention construction process according to claim 1, wherein: in the process, the steel structure below the grating plate needs to be removed, then rust removal and corrosion prevention work is carried out, and hot galvanizing or stainless steel mounting clamps are adopted to mount the grating plate after corrosion prevention is qualified.
9. A process for the corrosion protection construction of bolts on steel structural members in marine climate environment according to any one of claims 1 to 8, comprising the steps of:
s1, cleaning the surface of a bolt base material;
s2, covering the surface of the bolt with anti-corrosion glue;
and S3, photo-curing the anti-corrosion adhesive.
10. The bolt corrosion protection construction process according to claim 9, wherein: the step S2 is specifically operated to inject a proper amount of anti-corrosion glue into a mould matched with the bolt by using a glass glue gun; and then directly reversely buckling the die after glue injection into the bolt and rotating the die left and right to uniformly cover the bolt with the anti-corrosion glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310502918.5A CN116550578A (en) | 2023-05-06 | 2023-05-06 | Marine climate environment steel structural member and bolt corrosion prevention construction process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310502918.5A CN116550578A (en) | 2023-05-06 | 2023-05-06 | Marine climate environment steel structural member and bolt corrosion prevention construction process thereof |
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| CN116550578A true CN116550578A (en) | 2023-08-08 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609071A (en) * | 2018-12-07 | 2019-04-12 | 石狮华宝新材料工程有限公司 | A kind of light binding, preparation method and bolt anti-corrosion technique protected for the anti-corrosion leak-proof of bolt, enhancing |
| CN114591667A (en) * | 2020-12-04 | 2022-06-07 | 沈阳化工研究院有限公司 | High-performance, high-solid and low-surface-treatment-tolerance epoxy primer and preparation method thereof |
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2023
- 2023-05-06 CN CN202310502918.5A patent/CN116550578A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609071A (en) * | 2018-12-07 | 2019-04-12 | 石狮华宝新材料工程有限公司 | A kind of light binding, preparation method and bolt anti-corrosion technique protected for the anti-corrosion leak-proof of bolt, enhancing |
| CN114591667A (en) * | 2020-12-04 | 2022-06-07 | 沈阳化工研究院有限公司 | High-performance, high-solid and low-surface-treatment-tolerance epoxy primer and preparation method thereof |
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