CN115478276A - Coating corrosion prevention method for marine steel - Google Patents
Coating corrosion prevention method for marine steel Download PDFInfo
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- CN115478276A CN115478276A CN202211223474.3A CN202211223474A CN115478276A CN 115478276 A CN115478276 A CN 115478276A CN 202211223474 A CN202211223474 A CN 202211223474A CN 115478276 A CN115478276 A CN 115478276A
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- marine steel
- steel
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- marine
- detachable sleeve
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 125
- 239000010959 steel Substances 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011248 coating agent Substances 0.000 title claims abstract description 20
- 238000000576 coating method Methods 0.000 title claims abstract description 20
- 238000005536 corrosion prevention Methods 0.000 title claims description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 24
- 238000005260 corrosion Methods 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 29
- 239000004166 Lanolin Substances 0.000 claims description 20
- 229940039717 lanolin Drugs 0.000 claims description 20
- 235000019388 lanolin Nutrition 0.000 claims description 20
- 239000000344 soap Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 19
- 239000000654 additive Substances 0.000 claims description 15
- 230000000996 additive effect Effects 0.000 claims description 15
- 230000007797 corrosion Effects 0.000 claims description 15
- 238000005253 cladding Methods 0.000 claims description 11
- 239000003963 antioxidant agent Substances 0.000 claims description 10
- 230000003078 antioxidant effect Effects 0.000 claims description 10
- 230000018044 dehydration Effects 0.000 claims description 10
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 239000003208 petroleum Substances 0.000 claims description 9
- 230000003449 preventive effect Effects 0.000 claims description 8
- -1 alkenyl imidazoline succinate Chemical compound 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 150000001408 amides Chemical class 0.000 claims description 5
- 239000002199 base oil Substances 0.000 claims description 5
- 230000007123 defense Effects 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 239000013556 antirust agent Substances 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 3
- ICLYJLBTOGPLMC-KVVVOXFISA-N (z)-octadec-9-enoate;tris(2-hydroxyethyl)azanium Chemical compound OCCN(CCO)CCO.CCCCCCCC\C=C/CCCCCCCC(O)=O ICLYJLBTOGPLMC-KVVVOXFISA-N 0.000 claims description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 229940117013 triethanolamine oleate Drugs 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000003973 paint Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 235000011837 pasties Nutrition 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to the technical field of steel processing, in particular to a coating anti-corrosion method for marine steel, which comprises the marine steel, wherein a detachable sleeve is sleeved on the surface of the marine steel, a protective sleeve is arranged on the detachable sleeve, a fixing bulge is arranged between the detachable sleeve and the marine steel, a filling area is reserved between the detachable sleeve and the outer wall of the marine steel, and anti-rust oil is filled in the filling area. According to the invention, the detachable sleeve is sleeved on the surface of the marine steel, and the anti-rust oil is filled between the detachable sleeve and the outer wall of the marine steel, so that the anti-corrosion effect is good, the rust rate of the surface of the marine steel is lower than 1.5% after three years, the rust removal cost can be reduced, the environmental pollution can be reduced, the consumption of the marine steel can be saved, and the service life of the structure can be prolonged; can dismantle between sleeve pipe and the lag can dismantle, can change the detachable sleeve pipe of different models according to the size of ocean steel, practice thrift the cost, fixed protruding stability that improves ocean steel installation.
Description
Technical Field
The invention relates to the technical field of steel processing, in particular to a coating corrosion prevention method for marine steel.
Background
Steel pipe piles and steel sheet piles are generally used for foundation piles, docks, pier piles, revetments, and the like of platforms constructed in the ocean, the lake, and the river. Cathodic protection can be used for parts which are immersed under water for a long time to effectively prevent corrosion, but it is difficult to effectively prevent corrosion in the part of the tidal range and the spray splash zone where the tide rises and falls.
Publication (bulletin) No.: CN112934639A discloses a preparation method of an anticorrosive steel, which comprises the following steps: s1, cooling rolled steel on a factory production line; s2, cleaning the surface of the steel; s3, coating the anticorrosive paint on the surface of the steel and drying; and S4, carrying out finished product inspection on the steel and the coating thereof, packaging and warehousing, and leaving the factory. The invention immediately coats the anticorrosive paint on the steel produced on the production line, so that the steel is coated with an anticorrosive coating after leaving the factory, the coating has good performance, the steel cannot be corroded before use because of no protection, and cannot be corroded because of coating damage, the subsequent coating engineering can be directly carried out, the rust removal process is omitted, the rust removal cost can be reduced, the environmental pollution is reduced, the consumption of the steel can be saved, and the service life of a steel structure is prolonged.
Publication (bulletin) No.: CN100552089C discloses a method for cladding and corrosion prevention of marine steel installed in the sea, lake, river, etc. The surface of a steel material is coated with a pasty mineral oil type anticorrosive material, and a belt-shaped mineral oil type anticorrosive tape is wound thereon, and then the steel material is further covered with a cushion material composed of a protective cover and a foamed plastic material or rubber provided on the inner surface of the protective cover. The corrosion prevention method can protect steel structures in water bodies such as oceans, rivers, lakes and the like from being corroded efficiently and stably for a long time.
The coating anticorrosion method for the marine steel adopts the anticorrosion paint to carry out steel structure anticorrosion, which is a relatively environment-friendly method, but after the marine steel is used for a long time, the surface is not tightly coated by the anticorrosion paint and the pasty mineral lipid anticorrosion material, so that the marine steel still can be corroded and rusted, the service life is influenced, and the maintenance cost is increased.
Disclosure of Invention
The invention aims to provide a coating corrosion prevention method for marine steel so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a cladding anticorrosion method for marine steel comprises the marine steel, wherein a detachable sleeve is sleeved on the surface of the marine steel, a protective sleeve is mounted on the detachable sleeve, a fixed bulge is arranged between the detachable sleeve and the marine steel, a filling area is reserved between the detachable sleeve and the outer wall of the marine steel, and antirust oil is filled in the filling area;
the method specifically comprises the following steps:
s10: cooling the rolled marine steel on a factory production line;
s20: cleaning the surface of the marine steel;
s30: selecting a detachable sleeve with a proper size, inserting cleaned marine steel into the detachable sleeve, and sleeving a defense sheath outside the detachable sleeve filled with the marine steel;
s40: adding anti-rust oil into a filling area between the detachable sleeve and the steel, and completely immersing the marine steel into the anti-rust oil;
s50: and a sealing cover or a paraffin wax seal is arranged at the top.
Preferably, the thickness of the protective sleeve is 1-3cm, and the protective sleeve is made of PP or PVC materials.
Preferably, the width of the filling area is 1-3cm.
Preferably, the outer wall of the protective sleeve is provided with an anti-collision shell, the thickness of the anti-collision shell is one half or one third of the thickness of the protective sleeve, and the anti-collision shell is made of stainless steel or aluminum skin.
As preferred, can dismantle the sleeve pipe and adopt the plastics pipe box, fixed arch adopts the silica gel material and the surface is the arc structure, fixed arch is the integrated into one piece structure with can dismantle the sleeve pipe.
Preferably, the antirust oil is dehydrated antirust oil which is prepared from the following raw materials in parts by weight: 30-50 parts of lubricating oil base oil, 5-15 parts of lanolin soap, 0.5-1 part of antirust additive, 1-3 parts of dehydration additive and 0.5-1 part of antioxidant.
Preferably, the lanolin soap is selected from one or more mixtures of calcium lanolin soap, sodium lanolin soap and potassium lanolin soap.
Preferably, the antirust agent is selected from one or more of alkenyl imidazoline succinate, borate, barium petroleum sulfonate, sodium petroleum sulfonate and triethanolammonium oleate.
Preferably, the dehydration additive is oleic acid, isobutanol, ethanol or petroleum ether.
Preferably, the antioxidant is selected from one or more of alkenyl imidazoline succinate alcohol amine and amide.
Compared with the prior art, the invention has the beneficial effects that: according to the coating anticorrosion method for the marine steel, the detachable sleeve is sleeved on the surface of the marine steel, and the antirust oil is filled between the detachable sleeve and the outer wall of the marine steel, so that the surface anticorrosion effect is improved, the anticorrosion effect is good, the rusting rate of the surface of the marine steel is lower than 1.5% after three years, the rust removal cost can be reduced, the environmental pollution is reduced, the consumption of the marine steel can be saved, and the service life of the structure is prolonged; can dismantle between sleeve pipe and the lag, can change the sleeve pipe dismantled of different models according to the size of ocean steel, practice thrift the cost, fixed protruding stability that improves the installation of ocean steel, and fixed protruding surface is the arc, can improve the contact between antirust oil and the ocean steel, improves the anticorrosion effect.
Drawings
FIG. 1 is a schematic cross-sectional view of a square marine steel product according to the present invention;
FIG. 2 is a schematic cross-sectional view of the cylindrical marine steel according to the present invention.
The meaning of the reference symbols in the figures:
10. steel material;
20. a protective sleeve;
30. a detachable sleeve;
40. a filling area;
50. an impact shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A coating corrosion-resistant method for marine steel comprises the marine steel 10, wherein a detachable sleeve 30 is sleeved on the surface of the marine steel 10, a protective sleeve 20 is installed on the detachable sleeve 30, a fixing protrusion 40 is arranged between the detachable sleeve 30 and the marine steel 10, a filling area 60 is reserved between the detachable sleeve 30 and the outer wall of the marine steel 10, and rust-resistant oil is filled in the filling area 60;
the method specifically comprises the following steps:
s10: cooling the rolled marine steel 10 on the factory production line;
s20: cleaning the surface of the marine steel 10;
s30: selecting a detachable sleeve 30 with a proper size, inserting the cleaned marine steel 10 into the detachable sleeve 30, and sleeving a defense sheath 20 outside the detachable sleeve 30 filled with the marine steel 10;
s40: adding rust preventive oil into a filling area 60 between the detachable sleeve 30 and the steel material 10, and completely immersing the marine steel material 10 in the rust preventive oil;
s50: and a sealing cover or a paraffin wax seal is arranged at the top.
Further, the thickness of the protecting sleeve 20 is 2cm, the protecting sleeve 20 is made of PP materials, and the width of the filling area 60 is 1cm.
It should be noted that the protective cover 20 is provided with an anti-collision shell 50 on the outer wall thereof, the thickness of the anti-collision shell 50 is half of the thickness of the protective cover 20, and the anti-collision shell 50 is made of stainless steel.
Specifically, the detachable sleeve 30 is a plastic sleeve, the fixing protrusion 40 is made of silica gel and has an arc-shaped surface, and the fixing protrusion 40 and the detachable sleeve 30 are integrally formed.
In the embodiment, the antirust oil is dehydrated antirust oil which is prepared from the following raw materials in parts by weight: 40 parts of lubricating oil base oil, 12 parts of lanolin soap, 0.7 part of antirust additive, 2 parts of dehydration additive and 0.7 part of antioxidant.
Specifically, the lanolin soap is lanolin potassium soap, the antirust agent is a mixture of alkenyl imidazoline succinate and borate, the dehydration additive is petroleum ether, and the antioxidant is amide.
Example 2
A coating corrosion-resistant method for marine steel comprises the marine steel 10, wherein a detachable sleeve 30 is sleeved on the surface of the marine steel 10, a protective sleeve 20 is installed on the detachable sleeve 30, a fixing protrusion 40 is arranged between the detachable sleeve 30 and the marine steel 10, a filling area 60 is reserved between the detachable sleeve 30 and the outer wall of the marine steel 10, and rust-resistant oil is filled in the filling area 60;
the method specifically comprises the following steps:
s10: cooling the rolled marine steel 10 on the factory production line;
s20: cleaning the surface of the marine steel 10;
s30: selecting a detachable sleeve 30 with a proper size, inserting the cleaned marine steel 10 into the detachable sleeve 30, and sleeving a defense sheath 20 outside the detachable sleeve 30 filled with the marine steel 10;
s40: adding rust preventive oil into a filling area 60 between the detachable sleeve 30 and the steel material 10, and completely immersing the marine steel material 10 in the rust preventive oil;
s50: and a sealing cover or paraffin wax sealing is arranged at the top.
Further, the thickness of the protection cover 20 is 3cm, the protection cover 20 is made of PVC materials, and the width of the filling area 60 is 3cm.
It is worth to say that, the outer wall of lag 20 is installed and is had crashproof shell 50, and crashproof shell 50's thickness is the one third of lag 20 thickness, and crashproof shell 50 adopts the aluminium skin material to make.
Specifically, the detachable sleeve 30 is a plastic sleeve, the fixing protrusions 40 are made of silica gel and have an arc-shaped surface, and the fixing protrusions 40 and the detachable sleeve 30 are integrally formed.
In the embodiment, the antirust oil is dehydrated antirust oil which is prepared from the following raw materials in parts by weight: 50 parts of lubricating oil base oil, 15 parts of lanolin soap, 1 part of antirust additive, 3 parts of dehydration additive and 1 part of antioxidant.
Specifically, the lanolin soap is a mixture of sodium lanolin soap and potassium lanolin soap, the antirust agent is a mixture of barium petroleum sulfonate, sodium petroleum sulfonate and triethanolamine oleate, the dehydration additive is isobutanol, and the antioxidant is a mixture of alkenyl imidazoline succinate alcohol amine and amide.
Example 3
A coating corrosion-resistant method for marine steel comprises the marine steel 10, wherein a detachable sleeve 30 is sleeved on the surface of the marine steel 10, a protective sleeve 20 is installed on the detachable sleeve 30, a fixing protrusion 40 is arranged between the detachable sleeve 30 and the marine steel 10, a filling area 60 is reserved between the detachable sleeve 30 and the outer wall of the marine steel 10, and rust-resistant oil is filled in the filling area 60;
the method specifically comprises the following steps:
s10: cooling the rolled marine steel 10 on the factory production line;
s20: cleaning the surface of the marine steel 10;
s30: selecting a detachable sleeve 30 with a proper size, inserting the cleaned marine steel 10 into the detachable sleeve 30, and sleeving a defense sheath 20 outside the detachable sleeve 30 filled with the marine steel 10;
s40: adding rust preventive oil into a filling area 60 between the detachable sleeve 30 and the steel 10, and completely immersing the marine steel 10 in the rust preventive oil;
s50: and a sealing cover or a paraffin wax seal is arranged at the top.
Further, the thickness of the protective sleeve 20 is 1cm, the protective sleeve 20 is made of PP, and the width of the filling area 60 is 1cm.
It should be noted that the protective cover 20 is provided with an anti-collision shell 50 on the outer wall thereof, the thickness of the anti-collision shell 50 is half of the thickness of the protective cover 20, and the anti-collision shell 50 is made of stainless steel.
Specifically, the detachable sleeve 30 is a plastic sleeve, the fixing protrusions 40 are made of silica gel and have an arc-shaped surface, and the fixing protrusions 40 and the detachable sleeve 30 are integrally formed.
In the embodiment, the antirust oil is dehydrated antirust oil which is prepared from the following raw materials in parts by weight: 40 parts of lubricating oil base oil, 10 parts of lanolin soap, 0.8 part of antirust additive, 2 parts of dehydration additive and 0.6 part of antioxidant.
Specifically, in this embodiment, the lanolin soap is selected from calcium lanolin soap, the rust inhibitor is alkenyl imidazoline succinate, the dehydration additive is oleic acid, and the antioxidant is amide.
Comparative example 1
In this embodiment, a pasty mineral lipid corrosion inhibitor is directly applied to the surface of the marine steel 10.
Comparative example 2
In this embodiment, the sealing film is directly coated on the surface of the marine steel material 10.
After the coating corrosion prevention methods of the marine steel according to the three examples of the present invention and the coating corrosion prevention methods of the two comparative examples were used, the rust formation ratio of the steel surface after 30 days, after one year, and after three years is shown in the following table:
| ratio of rust formation after 30 days/%) | Ratio of rust formation after one year/%) | Three years later rusting ratio/% | |
| Example 1 | 0 | 0.35 | 1.4 |
| Example 2 | 0 | 0.42 | 1.5 |
| Example 3 | 0 | 0.39 | 1.0 |
| Comparative example 1 | 4.2 | 12.2 | 20.8 |
| Comparative example 2 | 10.9 | 20.8 | 35.9 |
According to the coating corrosion prevention method for the marine steel, the detachable sleeve 30 is sleeved on the surface of the marine steel 10, and the anti-rust oil is filled between the detachable sleeve 30 and the outer wall of the marine steel 10, so that the surface corrosion prevention effect is improved, the anti-corrosion effect is good, the rusting rate of the surface of the marine steel 10 is lower than 1.5% after three years, the rust removal cost can be reduced, the environmental pollution is reduced, the consumption of the marine steel can be saved, and the service life of the structure is prolonged; can dismantle between sleeve pipe 30 and the lag 20 and dismantle, can change the sleeve pipe 30 dismantled of different models according to the size of ocean steel 10, practice thrift the cost, fixed protruding 40 improves the stability of ocean steel 10 installation, and fixed protruding 40 surface is the arc, can improve the contact between antirust oil and the ocean steel 10, improves the anticorrosion effect.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A coating corrosion prevention method for marine steel is characterized by comprising the following steps: the marine steel product rust-preventive filling device comprises marine steel products (10), a detachable sleeve (30) is sleeved on the surface of the marine steel products (10), a protective sleeve (20) is installed on the detachable sleeve (30), a fixing protrusion (40) is arranged between the detachable sleeve (30) and the marine steel products (10), a filling area (60) is reserved between the detachable sleeve (30) and the outer wall of the marine steel products (10), and rust-preventive oil is filled in the filling area (60);
the method specifically comprises the following steps:
s10: cooling rolled marine steel (10) on a factory production line;
s20: cleaning the surface of the marine steel (10);
s30: selecting a detachable sleeve (30) with a proper size, inserting the cleaned marine steel (10) into the detachable sleeve (30), and sleeving a defense sheath (20) outside the detachable sleeve (30) filled with the marine steel (10);
s40: adding rust preventive oil into a filling area (60) between the detachable sleeve (30) and the steel (10), and completely immersing the marine steel (10) in the rust preventive oil;
s50: and a sealing cover or a paraffin wax seal is arranged at the top.
2. The method of cladding corrosion protection for marine steel products according to claim 1, wherein: the thickness of the protective sleeve (20) is 1-3cm, and the protective sleeve (20) is made of PP or PVC materials.
3. The method for cladding and preventing corrosion of a marine steel product as claimed in claim 1, wherein: the width of the filling area (60) is 1-3cm.
4. The method of cladding corrosion protection for marine steel products according to claim 1, wherein: the anti-collision protective cover is characterized in that an anti-collision shell (50) is mounted on the outer wall of the protective cover (20), the thickness of the anti-collision shell (50) is one half or one third of that of the protective cover (20), and the anti-collision shell (50) is made of stainless steel or aluminum skin.
5. The method for cladding and preventing corrosion of a marine steel product as claimed in claim 4, wherein: the detachable sleeve (30) is a plastic pipe sleeve, the fixed protrusions (40) are made of silica gel materials and are of arc-shaped structures, and the fixed protrusions (40) and the detachable sleeve (30) are of integrated structures.
6. The method for cladding and preventing corrosion of a marine steel product as claimed in claim 1, wherein: the antirust oil is dehydrated antirust oil which is prepared from the following raw materials in parts by weight: 30-50 parts of lubricating oil base oil, 5-15 parts of lanolin soap, 0.5-1 part of antirust additive, 1-3 parts of dehydration additive and 0.5-1 part of antioxidant.
7. The method of cladding corrosion protection for marine steel products according to claim 6, wherein: the lanolin soap is one or more of calcium lanolin soap, sodium lanolin soap and potassium lanolin soap.
8. The method of cladding corrosion protection for marine steel products according to claim 6, wherein: the antirust agent is selected from one or more of alkenyl imidazoline succinate, borate, barium petroleum sulfonate, sodium petroleum sulfonate and triethanolamine oleate.
9. The method for cladding and preventing corrosion of a marine steel product as claimed in claim 6, wherein: the dehydration additive is oleic acid, isobutanol, ethanol or petroleum ether.
10. The method of cladding corrosion protection for marine steel products according to claim 6, wherein: the antioxidant is selected from one or more of alkenyl imidazoline succinate alcohol amine and amide.
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| CN211447741U (en) * | 2019-11-19 | 2020-09-08 | 广州云奇科技有限公司 | External sleeve of steel pipe |
| CN216809869U (en) * | 2022-03-09 | 2022-06-24 | 青岛海弗莱安全科技有限公司 | Ocean piling bar multiple-layer coating anticorrosion device |
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