CN114277331A - Tower drum surface protection composite material and preparation method and application thereof - Google Patents
Tower drum surface protection composite material and preparation method and application thereof Download PDFInfo
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- CN114277331A CN114277331A CN202111632645.3A CN202111632645A CN114277331A CN 114277331 A CN114277331 A CN 114277331A CN 202111632645 A CN202111632645 A CN 202111632645A CN 114277331 A CN114277331 A CN 114277331A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- 239000000835 fiber Substances 0.000 claims abstract description 118
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 111
- 238000000576 coating method Methods 0.000 claims abstract description 54
- 239000011248 coating agent Substances 0.000 claims abstract description 53
- 239000003973 paint Substances 0.000 claims abstract description 45
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 32
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- 238000005728 strengthening Methods 0.000 claims abstract description 27
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 32
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
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Abstract
The invention discloses a tower drum surface protection composite material and a preparation method and application thereof. The invention prepares aluminum-plated aluminum oxide fiber and aluminizes Al2O3Preparation of fiber composite aluminum alloy wire, coating treatment of tower cylinder matrix and aluminum-plated Al2O3Fiber composite aluminum alloy coating strengthening treatment and organic anticorrosive coating preparation on tower drumAl plated on the surface of the substrate2O3Fiber composite aluminum alloy coating, tower drum surface protection composite material formed by sequentially coating thick paste type epoxy paint and polyurethane finish paint, and aluminum-plated Al2O3The thickness of the fiber composite aluminum alloy coating is 30-90 μm, the dry film thickness of the thick paste type epoxy paint is not less than 120 μm, and the dry film thickness of the polyurethane finish paint is not less than 40 μm. The surface protection composite material for the tower drum, which is prepared by the invention, is suitable for large-scale industrial production, can improve the corrosion resistance of the tower drum in a wind and sand erosion environment, and is suitable for surface protection of the wind power tower drum.
Description
Technical Field
The invention belongs to the field of composite materials, and particularly relates to a tower drum surface protection composite material, and a preparation method and application thereof.
Background
With the continuous consumption of traditional energy reserves and the increasingly serious environmental problems associated with their utilization, the development and utilization of clean energy has become an important subject and content of the development of today's world. Wind energy is an important green energy source, has the advantages of being renewable, clean, pollution-free and wide in distribution, and has wide development and application prospects. The wind power tower barrel is used as a supporting foundation and an operation platform of the wind generating set system and is an important guarantee for the safe operation of the wind generating set system. In practical engineering application, vibration fatigue fracture and corrosion damage are the main forms causing failure of the wind power tower, and the corrosion damage can further cause and aggravate the occurrence of vibration fatigue fracture, so that the anticorrosion treatment is the focus of attention in the field of tower manufacturing.
The outer surface of the existing tower cylinder is usually subjected to surface treatment in the following way, in a medium corrosion environment, thick paste type epoxy paint is used as a bottom layer, polyurethane finish paint is used as a surface layer, and when long-acting protection is needed, the thickness of the bottom layer is increased; in a high-corrosion environment, the epoxy zinc-rich primer is used as a bottom layer, the epoxy micaceous iron intermediate paint is used as a middle layer, the polyurethane finish paint is used as a surface layer, and when long-acting protection is needed, the thickness of the middle layer is increased. With the continuous and complicated environment of the application scene, the influence of factors such as high and low temperature, wind and sand, wind and rain, illumination and the like on the wind power tower drum is increasingly prominent, and the defect of the pure organic protection composite material in the extreme environment is more and more obvious. How to improve the self stability of the protective composite material and improve the protective period of the protective composite material to the tower cylinder has important significance.
Disclosure of Invention
The invention aims to provide a tower drum surface protection composite material, and a preparation method and application thereof.
According to an aspect of the present invention, there is provided a method for preparing a tower tube surface protection composite material, the method comprising the steps of:
first, Al plating2O3Preparation of fiber composite aluminum alloy wire
1) Preparing materials: the components of the alloy comprise, by weight, 0.22% of Fe, 0.09% of Si, 0.05% of Cu, 0.002% of Mg, 0.02% of Ni, 0.002% of Nd, and aluminum-plated Al2O32.0-5.0% of fiber and the balance of aluminum Al are mixed to prepare aluminum ingot, aluminum intermediate alloy and aluminum-plated Al2O3Fibers; wherein, Al is plated2O3The diameter of the fiber is 200nm, and the length of the fiber is 600 nm;
2) preparing a composite alloy melt: melting aluminum ingots at 770 ℃, adding each intermediate alloy, keeping the temperature at 750 ℃, performing electromagnetic stirring treatment for 20min, standing for 30min, refining, degassing, deslagging, and heating to 770 ℃ to obtain an aluminum alloy melt; adding aluminum-plated Al with the weight ratio of 2.0-5.0 percent into the aluminum alloy melt2O3Electromagnetically stirring the fiber at 750 ℃ for 30min, and standing for 10min to obtain a composite alloy melt;
3) aluminum-plated Al2O3Preparing a fiber composite aluminum alloy wire: forming the composite alloy melt into an aluminum alloy rod blank by hot extrusion, wherein the hot extrusion temperature is 640-650 ℃, and the extrusion reduction ratio is 15-20%; drawing the aluminum alloy rod blank into aluminized Al with the specification of phi 0.5 mm-1.5 mm by multi-pass drawing forming2O3Fiber composite aluminum alloy wire;
secondly, coating treatment of tower drum substrate
1) Surface treatment of a tower cylinder base body: mechanically sandblasting the surface of the tower cylinder base body by using 1mm quartz sand, wherein the sandblasting pressure is 2.0MPa, and the sandblasting distance is 300 mm; removing oil by using acetone, performing rust removal treatment by using 0.05mol/L dilute hydrochloric acid, washing by using deionized water, and drying to obtain a tower cylinder base body after surface treatment;
2) spraying treatment: al plating by high-speed spray gun2O3The fiber composite aluminum alloy wire is sprayed on the surface of the tower cylinder matrix after surface treatment, the spraying temperature is 820 ℃, the spraying air pressure is 1.5MPa, the oxygen pressure is 0.55MPa, and the acetylene pressure is 0.05 MPa; aluminum-plated Al2O3The wire feeding speed of the fiber composite aluminum alloy wire is 10-15 m/min, the spraying distance is 200mm, the spraying angle is 25 degrees, 30-90 mu m of aluminum-plated Al is formed on the surface of the tower drum substrate2O3Fiber composite aluminum alloy plating;
al plating2O3Strengthening treatment for fiber composite aluminum alloy coating
Aluminum-plated Al on surface of tower cylinder substrate by using dry shot blasting machine2O3Strengthening the fiber composite aluminum alloy coating by selecting zirconia ceramic balls with the average grain diameter of 0.5mm, the shot blasting pressure of 0.2-0.5MPa and the shot blasting distance of 250mm to obtain the strengthened aluminized Al2O3Fiber composite aluminum alloy plating;
preparation of organic anticorrosive layer
Aluminized Al after strengthening treatment2O3And sequentially coating thick paste type epoxy paint and polyurethane finish paint on the fiber composite aluminum alloy coating, wherein the thickness of a dry film of the thick paste type epoxy paint is not less than 120 mu m, and the thickness of a dry film of the polyurethane finish paint is not less than 40 mu m, so as to obtain the tower cylinder surface protection composite material.
The invention also relates to an application of the preparation method of the tower drum surface protection composite material in the field of preparation of tower drum anticorrosive materials.
According to another aspect of the invention, the invention provides a tower surface protection composite material prepared according to the preparation method.
Further, the surface protection composite material for the tower barrel is made of aluminum-plated Al2O3The fiber composite aluminum alloy coating is sequentially coated with thick paste type epoxy paint and polyurethane finish paint.
Furthermore, in the surface protection composite material for the tower cylinder, aluminum-plated Al is adopted2O3The thickness of the fiber composite aluminum alloy plating layer is 30-90 μm.
Furthermore, in the tower surface protection composite material, the dry film thickness of the thick paste type epoxy paint is not less than 120 μm.
Furthermore, in the tower drum surface protection composite material, the dry film thickness of the polyurethane finish paint is not less than 40 μm.
Finally, the invention also relates to the application of the tower drum surface protection composite material in the field of tower drum corrosion prevention.
Compared with the prior art, the preparation method of the tower drum surface protection composite material is suitable for large-scale industrial production, can improve the corrosion resistance of the tower drum in a wind and sand erosion environment, and is suitable for surface protection of the wind power tower drum.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 shows Al-plated Al after strengthening treatment of a sample obtained in example 32O3The corrosion morphology of the fiber composite aluminum alloy coating;
FIG. 2 shows Al-plated Al after strengthening treatment of the sample obtained in example 52O3And (3) corrosion morphology of the fiber composite aluminum alloy coating.
Detailed Description
The present invention will be described in detail and with reference to specific examples thereof, which are set forth to illustrate, but are not to be construed as the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition to the specific methods, devices, and materials used in the examples, any methods, devices, and materials similar or equivalent to those described in the examples may be used in the practice of the invention, in addition to the specific methods, devices, and materials used in the examples, in keeping with the knowledge of one skilled in the art and with the description of the invention.
Example 1
A preparation method of a tower drum surface protection composite material comprises the following steps:
first, Al plating2O3Preparation of fiber composite aluminum alloy wire
1) Preparing materials: the components of the alloy comprise, by weight, 0.22% of Fe, 0.09% of Si, 0.05% of Cu, 0.002% of Mg, 0.02% of Ni, 0.002% of Nd, and aluminum-plated Al2O32.0% of fiber and the balance of aluminum Al are mixed, and an aluminum ingot, an aluminum intermediate alloy and aluminum-plated Al are prepared2O3Fibers; wherein, Al is plated2O3The diameter of the fiber is 200nm, and the length of the fiber is 600 nm;
2) preparing a composite alloy melt: melting aluminum ingots at 770 ℃, adding each intermediate alloy, keeping the temperature at 750 ℃, performing electromagnetic stirring treatment for 20min, standing for 30min, refining, degassing, deslagging, and heating to 770 ℃ to obtain an aluminum alloy melt; adding 2.0 weight percent of aluminum-plated Al into the aluminum alloy melt2O3Electromagnetically stirring the fiber at 750 ℃ for 30min, and standing for 10min to obtain a composite alloy melt;
3) aluminum-plated Al2O3Preparing a fiber composite aluminum alloy wire: forming the composite alloy melt into an aluminum alloy rod blank by hot extrusion, wherein the hot extrusion temperature is 640-650 ℃, and the extrusion reduction ratio is 20%; drawing the aluminum alloy rod blank into aluminized Al with the specification of phi 0.5mm by multi-pass drawing forming2O3Fiber composite aluminum alloy wire;
secondly, coating treatment of tower drum substrate
1) Surface treatment of a tower cylinder base body: mechanically sandblasting the surface of the tower cylinder base body by using 1mm quartz sand, wherein the sandblasting pressure is 2.0MPa, and the sandblasting distance is 300 mm; removing oil by using acetone, performing rust removal treatment by using 0.05mol/L dilute hydrochloric acid, washing by using deionized water, and drying to obtain a tower cylinder base body after surface treatment;
2) spraying treatment: al plating by high-speed spray gun2O3Spraying the fiber composite aluminum alloy wire on the surface of the tower drum matrix after surface treatment at 820 ℃, under the pressure of 1.5MPa and oxygen pressure0.55MPa, acetylene pressure is 0.05 MPa; aluminum-plated Al2O3The wire feeding speed of the fiber composite aluminum alloy wire is 15m/min, the spraying distance is 200mm, the spraying angle is 25 degrees, and 30 mu m of aluminum-plated Al is formed on the surface of a tower drum substrate2O3Fiber composite aluminum alloy plating;
al plating2O3Strengthening treatment for fiber composite aluminum alloy coating
Aluminum-plated Al on surface of tower cylinder substrate by using dry shot blasting machine2O3Performing strengthening treatment on the fiber composite aluminum alloy coating, selecting zirconia ceramic balls with the average grain diameter of 0.5mm, shot blasting pressure of 0.2MPa and shot blasting distance of 250mm, and obtaining the strengthened aluminized Al2O3Fiber composite aluminum alloy plating;
preparation of organic anticorrosive layer
Aluminized Al after strengthening treatment2O3And sequentially coating thick paste type epoxy paint and polyurethane finish paint on the fiber composite aluminum alloy coating, wherein the thickness of a dry film of the thick paste type epoxy paint is not less than 120 mu m, and the thickness of a dry film of the polyurethane finish paint is not less than 40 mu m, so as to obtain the tower cylinder surface protection composite material.
Example 2
A preparation method of a tower drum surface protection composite material comprises the following steps:
first, Al plating2O3Preparation of fiber composite aluminum alloy wire
1) Preparing materials: the components of the alloy comprise, by weight, 0.22% of Fe, 0.09% of Si, 0.05% of Cu, 0.002% of Mg, 0.02% of Ni, 0.002% of Nd, and aluminum-plated Al2O33.0% of fiber and the balance of aluminum Al are mixed, and an aluminum ingot, an aluminum intermediate alloy and aluminum-plated Al are prepared2O3Fibers; wherein, Al is plated2O3The diameter of the fiber is 200nm, and the length of the fiber is 600 nm;
2) preparing a composite alloy melt: melting aluminum ingots at 770 ℃, adding each intermediate alloy, keeping the temperature at 750 ℃, performing electromagnetic stirring treatment for 20min, standing for 30min, refining, degassing, deslagging, and heating to 770 ℃ to obtain an aluminum alloy melt; to aluminiumAluminum-plated Al with the weight ratio of 3.0 percent is added into the alloy melt2O3Electromagnetically stirring the fiber at 750 ℃ for 30min, and standing for 10min to obtain a composite alloy melt;
3) aluminum-plated Al2O3Preparing a fiber composite aluminum alloy wire: forming the composite alloy melt into an aluminum alloy rod blank by hot extrusion, wherein the hot extrusion temperature is 640-650 ℃, and the extrusion reduction ratio is 20%; drawing the aluminum alloy rod blank into aluminized Al with the specification of phi 0.8mm by multi-pass drawing forming2O3Fiber composite aluminum alloy wire;
secondly, coating treatment of tower drum substrate
1) Surface treatment of a tower cylinder base body: mechanically sandblasting the surface of the tower cylinder base body by using 1mm quartz sand, wherein the sandblasting pressure is 2.0MPa, and the sandblasting distance is 300 mm; removing oil by using acetone, performing rust removal treatment by using 0.05mol/L dilute hydrochloric acid, washing by using deionized water, and drying to obtain a tower cylinder base body after surface treatment;
2) spraying treatment: al plating by high-speed spray gun2O3The fiber composite aluminum alloy wire is sprayed on the surface of the tower cylinder matrix after surface treatment, the spraying temperature is 820 ℃, the spraying air pressure is 1.5MPa, the oxygen pressure is 0.55MPa, and the acetylene pressure is 0.05 MPa; aluminum-plated Al2O3The wire feeding speed of the fiber composite aluminum alloy wire is 12m/min, the spraying distance is 200mm, the spraying angle is 25 degrees, and 50 mu m of aluminum-plated Al is formed on the surface of a tower drum substrate2O3Fiber composite aluminum alloy plating;
al plating2O3Strengthening treatment for fiber composite aluminum alloy coating
Aluminum-plated Al on surface of tower cylinder substrate by using dry shot blasting machine2O3Performing strengthening treatment on the fiber composite aluminum alloy coating, selecting zirconia ceramic balls with the average grain diameter of 0.5mm, shot blasting pressure of 0.2MPa and shot blasting distance of 250mm, and obtaining the strengthened aluminized Al2O3Fiber composite aluminum alloy plating;
preparation of organic anticorrosive layer
Aluminized Al after strengthening treatment2O3FiberAnd sequentially coating thick paste type epoxy paint and polyurethane finish paint on the composite aluminum alloy coating, wherein the thickness of a dry film of the thick paste type epoxy paint is not less than 120 mu m, and the thickness of a dry film of the polyurethane finish paint is not less than 40 mu m, so as to obtain the tower cylinder surface protection composite material.
Example 3
A preparation method of a tower drum surface protection composite material comprises the following steps:
first, Al plating2O3Preparation of fiber composite aluminum alloy wire
1) Preparing materials: the components of the alloy comprise, by weight, 0.22% of Fe, 0.09% of Si, 0.05% of Cu, 0.002% of Mg, 0.02% of Ni, 0.002% of Nd, and Al for aluminum plating2O34.0% of fiber and the balance of aluminum Al are mixed, and an aluminum ingot, an aluminum intermediate alloy and aluminum-plated Al are prepared2O3Fibers; wherein, Al is plated2O3The diameter of the fiber is 200nm, and the length of the fiber is 600 nm;
2) preparing a composite alloy melt: melting aluminum ingots at 770 ℃, adding each intermediate alloy, keeping the temperature at 750 ℃, performing electromagnetic stirring treatment for 20min, standing for 30min, refining, degassing, deslagging, and heating to 770 ℃ to obtain an aluminum alloy melt; adding 4.0 weight percent of aluminum-plated Al into the aluminum alloy melt2O3Electromagnetically stirring the fiber at 750 ℃ for 30min, and standing for 10min to obtain a composite alloy melt;
3) aluminum-plated Al2O3Preparing a fiber composite aluminum alloy wire: forming the composite alloy melt into an aluminum alloy rod blank by hot extrusion, wherein the hot extrusion temperature is 640-650 ℃, and the extrusion reduction ratio is 18%; drawing the aluminum alloy rod blank into aluminized Al with the specification of phi 1.0mm by multi-pass drawing forming2O3Fiber composite aluminum alloy wire;
secondly, coating treatment of tower drum substrate
1) Surface treatment of a tower cylinder base body: mechanically sandblasting the surface of the tower cylinder base body by using 1mm quartz sand, wherein the sandblasting pressure is 2.0MPa, and the sandblasting distance is 300 mm; removing oil by using acetone, performing rust removal treatment by using 0.05mol/L dilute hydrochloric acid, washing by using deionized water, and drying to obtain a tower cylinder base body after surface treatment;
2) spraying treatment: al plating by high-speed spray gun2O3The fiber composite aluminum alloy wire is sprayed on the surface of the tower cylinder matrix after surface treatment, the spraying temperature is 820 ℃, the spraying air pressure is 1.5MPa, the oxygen pressure is 0.55MPa, and the acetylene pressure is 0.05 MPa; aluminum-plated Al2O3The wire feeding speed of the fiber composite aluminum alloy wire is 13m/min, the spraying distance is 200mm, the spraying angle is 25 degrees, and 60 mu m aluminum-plated Al is formed on the surface of a tower drum substrate2O3Fiber composite aluminum alloy plating;
al plating2O3Strengthening treatment for fiber composite aluminum alloy coating
Aluminum-plated Al on surface of tower cylinder substrate by using dry shot blasting machine2O3Performing strengthening treatment on the fiber composite aluminum alloy coating, selecting zirconia ceramic balls with the average grain diameter of 0.5mm, shot blasting pressure of 0.3MPa and shot blasting distance of 250mm, and obtaining the strengthened aluminized Al2O3Fiber composite aluminum alloy plating;
preparation of organic anticorrosive layer
Aluminized Al after strengthening treatment2O3And sequentially coating thick paste type epoxy paint and polyurethane finish paint on the fiber composite aluminum alloy coating, wherein the thickness of a dry film of the thick paste type epoxy paint is not less than 120 mu m, and the thickness of a dry film of the polyurethane finish paint is not less than 40 mu m, so as to obtain the tower cylinder surface protection composite material.
Example 4
A preparation method of a tower drum surface protection composite material comprises the following steps:
first, Al plating2O3Preparation of fiber composite aluminum alloy wire
1) Preparing materials: the components of the alloy comprise, by weight, 0.22% of Fe, 0.09% of Si, 0.05% of Cu, 0.002% of Mg, 0.02% of Ni, 0.002% of Nd, and Al for aluminum plating2O34.0% of fiber and the balance of aluminum Al are mixed, and an aluminum ingot, an aluminum intermediate alloy and aluminum-plated Al are prepared2O3Fibers; wherein, Al is plated2O3The fibers had a diameter of 200nm and a length of600nm；
2) Preparing a composite alloy melt: melting aluminum ingots at 770 ℃, adding each intermediate alloy, keeping the temperature at 750 ℃, performing electromagnetic stirring treatment for 20min, standing for 30min, refining, degassing, deslagging, and heating to 770 ℃ to obtain an aluminum alloy melt; adding 4.0 weight percent of aluminum-plated Al into the aluminum alloy melt2O3Electromagnetically stirring the fiber at 750 ℃ for 30min, and standing for 10min to obtain a composite alloy melt;
3) aluminum-plated Al2O3Preparing a fiber composite aluminum alloy wire: forming the composite alloy melt into an aluminum alloy rod blank by hot extrusion, wherein the hot extrusion temperature is 640-650 ℃, and the extrusion reduction ratio is 15%; drawing the aluminum alloy rod blank into aluminized Al with the specification of phi 1.2mm by multi-pass drawing forming2O3Fiber composite aluminum alloy wire;
secondly, coating treatment of tower drum substrate
1) Surface treatment of a tower cylinder base body: mechanically sandblasting the surface of the tower cylinder base body by using 1mm quartz sand, wherein the sandblasting pressure is 2.0MPa, and the sandblasting distance is 300 mm; removing oil by using acetone, performing rust removal treatment by using 0.05mol/L dilute hydrochloric acid, washing by using deionized water, and drying to obtain a tower cylinder base body after surface treatment;
2) spraying treatment: al plating by high-speed spray gun2O3The fiber composite aluminum alloy wire is sprayed on the surface of the tower cylinder matrix after surface treatment, the spraying temperature is 820 ℃, the spraying air pressure is 1.5MPa, the oxygen pressure is 0.55MPa, and the acetylene pressure is 0.05 MPa; aluminum-plated Al2O3The wire feeding speed of the fiber composite aluminum alloy wire is 10m/min, the spraying distance is 200mm, the spraying angle is 25 degrees, and 90 mu m aluminum-plated Al is formed on the surface of a tower drum substrate2O3Fiber composite aluminum alloy plating;
al plating2O3Strengthening treatment for fiber composite aluminum alloy coating
Aluminum-plated Al on surface of tower cylinder substrate by using dry shot blasting machine2O3The fiber composite aluminum alloy coating is strengthened, zirconia ceramic balls with the average grain diameter of 0.5mm are selected, and the shot blasting pressure is 05MPa, shot blasting distance of 250mm, and obtaining the aluminum-plated Al after strengthening treatment2O3Fiber composite aluminum alloy plating;
preparation of organic anticorrosive layer
Aluminized Al after strengthening treatment2O3And sequentially coating thick paste type epoxy paint and polyurethane finish paint on the fiber composite aluminum alloy coating, wherein the thickness of a dry film of the thick paste type epoxy paint is not less than 120 mu m, and the thickness of a dry film of the polyurethane finish paint is not less than 40 mu m, so as to obtain the tower cylinder surface protection composite material.
Example 5
A preparation method of a tower drum surface protection composite material comprises the following steps:
first, Al plating2O3Preparation of fiber composite aluminum alloy wire
1) Preparing materials: the components of the alloy comprise, by weight, 0.22% of Fe, 0.09% of Si, 0.05% of Cu, 0.002% of Mg, 0.02% of Ni, 0.002% of Nd, and Al for aluminum plating2O35.0% of fiber and the balance of aluminum Al are mixed, and an aluminum ingot, an aluminum intermediate alloy and aluminum-plated Al are prepared2O3Fibers; wherein, Al is plated2O3The diameter of the fiber is 200nm, and the length of the fiber is 600 nm;
2) preparing a composite alloy melt: melting aluminum ingots at 770 ℃, adding each intermediate alloy, keeping the temperature at 750 ℃, performing electromagnetic stirring treatment for 20min, standing for 30min, refining, degassing, deslagging, and heating to 770 ℃ to obtain an aluminum alloy melt; adding 5.0 percent of aluminized Al by weight into the aluminum alloy melt2O3Electromagnetically stirring the fiber at 750 ℃ for 30min, and standing for 10min to obtain a composite alloy melt;
3) aluminum-plated Al2O3Preparing a fiber composite aluminum alloy wire: forming the composite alloy melt into an aluminum alloy rod blank by hot extrusion, wherein the hot extrusion temperature is 640-650 ℃, and the extrusion reduction ratio is 15%; drawing the aluminum alloy rod blank into aluminized Al with the specification of phi 1.5mm by multi-pass drawing forming2O3Fiber composite aluminum alloy wire;
secondly, coating treatment of tower drum substrate
1) Surface treatment of a tower cylinder base body: mechanically sandblasting the surface of the tower cylinder base body by using 1mm quartz sand, wherein the sandblasting pressure is 2.0MPa, and the sandblasting distance is 300 mm; removing oil by using acetone, performing rust removal treatment by using 0.05mol/L dilute hydrochloric acid, washing by using deionized water, and drying to obtain a tower cylinder base body after surface treatment;
2) spraying treatment: al plating by high-speed spray gun2O3The fiber composite aluminum alloy wire is sprayed on the surface of the tower cylinder matrix after surface treatment, the spraying temperature is 820 ℃, the spraying air pressure is 1.5MPa, the oxygen pressure is 0.55MPa, and the acetylene pressure is 0.05 MPa; aluminum-plated Al2O3The wire feeding speed of the fiber composite aluminum alloy wire is 10m/min, the spraying distance is 200mm, the spraying angle is 25 degrees, and 90 mu m aluminum-plated Al is formed on the surface of a tower drum substrate2O3Fiber composite aluminum alloy plating;
al plating2O3Strengthening treatment for fiber composite aluminum alloy coating
Aluminum-plated Al on surface of tower cylinder substrate by using dry shot blasting machine2O3Performing strengthening treatment on the fiber composite aluminum alloy coating, selecting zirconia ceramic balls with the average grain diameter of 0.5mm, shot blasting pressure of 0.5MPa and shot blasting distance of 250mm, and obtaining the strengthened aluminized Al2O3Fiber composite aluminum alloy plating;
preparation of organic anticorrosive layer
Aluminized Al after strengthening treatment2O3And sequentially coating thick paste type epoxy paint and polyurethane finish paint on the fiber composite aluminum alloy coating, wherein the thickness of a dry film of the thick paste type epoxy paint is not less than 120 mu m, and the thickness of a dry film of the polyurethane finish paint is not less than 40 mu m, so as to obtain the tower cylinder surface protection composite material.
Example 6
The aluminum-plated Al obtained in examples 1 to 5 after the strengthening treatment was subjected to salt spray test in accordance with GB/T10125 salt spray test method2O3And performing a salt spray corrosion test on the fiber composite aluminum alloy coating. The test time is 30 days, the spraying mode is continuous, the test temperature is 35 +/-2 ℃, and the salt spray sedimentation rate is 1-2ml80cm-2·h-1The salt spray corrosion solution is a sodium chloride solution with the concentration of 50g/l +/-5 g/l, and the pH value of the sodium chloride solution is 7.0. The mass change of each sample was calculated by weighing method, and the test results are shown in table 1.
TABLE 1
The specimens prepared in examples 3 and 5 were subjected to etching topography observation using a scanning electron microscope of type JSM-6490 LV. As shown in FIG. 1, the sample prepared in example 3 was subjected to 30-day salt spray etching, and then to strengthening treatment to obtain aluminized Al2O3White corrosion products appear on the surface of the fiber composite aluminum alloy coating, and the total particle size of the corrosion products is smaller except for local accumulation; as shown in FIG. 2, the sample prepared in example 5 was etched by salt spray for 30 days and then was treated with aluminum-plated Al after strengthening treatment, as compared with example 32O3White corrosion product particles appear on the surface of the fiber composite aluminum alloy coating, are obviously increased and are local clusters of multiple regions. This is in agreement with the test results obtained by the weighing method.
The aluminized Al prepared in examples 1 to 5 was subjected to a test in accordance with the test in the adhesion Performance test method of GB/T9793 "thermally sprayed metals and other inorganic coatings of Zinc, aluminum and alloys thereof2O3And (3) detecting the adhesive force of the fiber composite aluminum alloy coating, when the grid area is 15mm multiplied by 15mm and the scratch interval is 3mm, pressing the coating in the grid area by using an adhesive tape under the load of 5N, and rapidly pulling the coating in the direction vertical to the surface of the coating, wherein the coating is free of peeling and cracking.
The thick paste type epoxy paint and the polyurethane finish paint in the tower surface protection composite material prepared in the embodiments 1 to 5 are subjected to performance tests according to the detection index requirements of the surface protection layer of the wind power tower, and the test results are shown in tables 2 and 3.
TABLE 2
TABLE 3
As can be seen from table 1, the adhesive force, the salt spray resistance and the flexibility of the tower tube surface protection composite materials prepared in examples 1 to 5 meet the index requirements of wind power tower tube protection.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The preparation method of the tower drum surface protection composite material is characterized by comprising the following steps:
first, Al plating2O3Preparation of fiber composite aluminum alloy wire
1) Preparing materials: the components of the alloy comprise, by weight, 0.22% of Fe, 0.09% of Si, 0.05% of Cu, 0.002% of Mg, 0.02% of Ni, 0.002% of Nd, and aluminum-plated Al2O32.0-5.0% of fiber and the balance of aluminum Al are mixed to prepare aluminum ingot, aluminum intermediate alloy and aluminum-plated Al2O3Fibers; wherein, Al is plated2O3The diameter of the fiber is 200nm, and the length of the fiber is 600 nm;
2) preparing a composite alloy melt: melting aluminum ingots at 770 ℃, adding each intermediate alloy, keeping the temperature at 750 ℃, performing electromagnetic stirring treatment for 20min, standing for 30min, refining, degassing, deslagging, and heating to 770 ℃ to obtain an aluminum alloy melt; adding aluminum-plated Al with the weight ratio of 2.0-5.0 percent into the aluminum alloy melt2O3Electromagnetically stirring the fiber at 750 ℃ for 30min, and standing for 10min to obtain a composite alloy melt;
3) aluminum-plated Al2O3Preparing a fiber composite aluminum alloy wire: by hot extrusion toThe composite alloy melt is formed into an aluminum alloy rod blank, wherein the hot extrusion temperature is 640-650 ℃, and the extrusion reduction ratio is 15-20%; drawing the aluminum alloy rod blank into aluminized Al with the specification of phi 0.5 mm-1.5 mm by multi-pass drawing forming2O3Fiber composite aluminum alloy wire;
secondly, coating treatment of tower drum substrate
1) Surface treatment of a tower cylinder base body: mechanically sandblasting the surface of the tower cylinder base body by using 1mm quartz sand, wherein the sandblasting pressure is 2.0MPa, and the sandblasting distance is 300 mm; removing oil by using acetone, performing rust removal treatment by using 0.05mol/L dilute hydrochloric acid, washing by using deionized water, and drying to obtain a tower cylinder base body after surface treatment;
2) spraying treatment: al plating by high-speed spray gun2O3The fiber composite aluminum alloy wire is sprayed on the surface of the tower cylinder matrix after surface treatment, the spraying temperature is 820 ℃, the spraying air pressure is 1.5MPa, the oxygen pressure is 0.55MPa, and the acetylene pressure is 0.05 MPa; aluminum-plated Al2O3The wire feeding speed of the fiber composite aluminum alloy wire is 10-15 m/min, the spraying distance is 200mm, the spraying angle is 25 degrees, 30-90 mu m of aluminum-plated Al is formed on the surface of the tower drum substrate2O3Fiber composite aluminum alloy plating;
al plating2O3Strengthening treatment for fiber composite aluminum alloy coating
Aluminum-plated Al on surface of tower cylinder substrate by using dry shot blasting machine2O3Strengthening the fiber composite aluminum alloy coating by selecting zirconia ceramic balls with the average grain diameter of 0.5mm, the shot blasting pressure of 0.2-0.5MPa and the shot blasting distance of 250mm to obtain the strengthened aluminized Al2O3Fiber composite aluminum alloy plating;
preparation of organic anticorrosive layer
Aluminized Al after strengthening treatment2O3And sequentially coating thick paste type epoxy paint and polyurethane finish paint on the fiber composite aluminum alloy coating, wherein the thickness of a dry film of the thick paste type epoxy paint is not less than 120 mu m, and the thickness of a dry film of the polyurethane finish paint is not less than 40 mu m, so as to obtain the tower cylinder surface protection composite material.
2. The application of the preparation method of the tower drum surface protection composite material as claimed in claim 1 in the field of preparation of tower drum anticorrosive materials.
3. A tower surface protection composite material, characterized in that it is produced according to the method of production described in claim 1.
4. The tower surface protection composite of claim 3, wherein the tower surface protection composite is formed from aluminized Al2O3The fiber composite aluminum alloy coating is sequentially coated with thick paste type epoxy paint and polyurethane finish paint.
5. The tower surface protection composite of claim 4, wherein the aluminized Al is2O3The thickness of the fiber composite aluminum alloy plating layer is 30-90 μm.
6. The tower surface protection composite as claimed in claim 5, wherein the thick paste epoxy paint has a dry film thickness of not less than 120 μm.
7. The tower surface protection composite of claim 6, wherein the polyurethane topcoat has a dry film thickness of not less than 40 μm.
8. Use of the tower surface protection composite according to any one of claims 3 to 7 in the field of tower protection against corrosion.
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| JPH11181562A (en) * | 1997-12-22 | 1999-07-06 | Sumitomo Light Metal Ind Ltd | Aluminum alloy wire for thermal spraying and method of manufacturing the same |
| CN110157964A (en) * | 2019-04-04 | 2019-08-23 | 上海新益电力线路器材有限公司 | A kind of aluminum alloy coating power circuit power transmission and transformation component and preparation method thereof |
| CN110640600A (en) * | 2019-08-16 | 2020-01-03 | 江苏海力风电设备科技股份有限公司 | Novel corrosion prevention process for offshore wind power tower |
| CN112191481A (en) * | 2020-09-01 | 2021-01-08 | 湖北润翔重工科技有限公司 | Paint spraying process for tower tube of fan |
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| JPH11181562A (en) * | 1997-12-22 | 1999-07-06 | Sumitomo Light Metal Ind Ltd | Aluminum alloy wire for thermal spraying and method of manufacturing the same |
| CN110157964A (en) * | 2019-04-04 | 2019-08-23 | 上海新益电力线路器材有限公司 | A kind of aluminum alloy coating power circuit power transmission and transformation component and preparation method thereof |
| CN110640600A (en) * | 2019-08-16 | 2020-01-03 | 江苏海力风电设备科技股份有限公司 | Novel corrosion prevention process for offshore wind power tower |
| CN112191481A (en) * | 2020-09-01 | 2021-01-08 | 湖北润翔重工科技有限公司 | Paint spraying process for tower tube of fan |
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