CN114149720A - Electrostatic spraying high-corrosion-resistance insulating steel rail - Google Patents
Electrostatic spraying high-corrosion-resistance insulating steel rail Download PDFInfo
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- CN114149720A CN114149720A CN202111360357.7A CN202111360357A CN114149720A CN 114149720 A CN114149720 A CN 114149720A CN 202111360357 A CN202111360357 A CN 202111360357A CN 114149720 A CN114149720 A CN 114149720A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
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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
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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
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/53—Base coat plus clear coat type
- B05D7/532—Base coat plus clear coat type the two layers being cured or baked together, i.e. wet on wet
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
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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
- B05D2504/00—Epoxy polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Abstract
The invention discloses an electrostatic spraying high-corrosion-resistance insulated steel rail, wherein a first composite coating is sprayed on the surface of the steel rail through high-voltage static spraying, and the first composite coating comprises the following raw materials in parts by weight: 38-75 parts of epoxy resin, 0.8-5.0 parts of curing agent, 0.2-1.5 parts of insulating additive, 0.1-1.0 part of adhesion promoter, 0.1-5.0 parts of pigment, 5-20 parts of wollastonite and 5-20 parts of barium sulfate. The invention has the characteristics of strong binding force between the coating and the steel rail substrate, difficult falling, simple and convenient preparation operation and low cost.
Description
Technical Field
The invention relates to a corrosion-resistant steel rail, in particular to an electrostatic spraying high-corrosion-resistant insulating steel rail.
Background
Stress damage and atmospheric corrosion are the primary causes of rail failure. The frequent stress action of the locomotive deforms the steel rail, generates crack damage, aggravates electrochemical reaction and accelerates the corrosion of the steel rail; meanwhile, in a loop where locomotive traction current is located, the ground insulation of the steel rail is limited, current leakage can occur, the electrochemical reaction rate is accelerated, corrosion is aggravated, and the service life of the steel rail is rapidly reduced; factors such as humid air, rainwater, polluted gas, day and night temperature difference and the like in the atmosphere provide conditions for electrochemical corrosion of the steel rail.
For the problem of corrosion of the rails, various methods have been used in the prior art. Firstly, a cathodic protection method is adopted, the main point is to solve the problem of corrosion of a steel rail in a tunnel, but the corrosion-resistant railway steel rail manufactured by the method is easy to interfere railway signals due to the use of direct current, and the control operation is complex; secondly, an organic coating protection method is adopted, an organic coating layer which is composed of organic zinc coating, tar cyclic resin and nitroformic acid ethyl ester paint is mainly coated on the surface of the steel rail, but the organic coating layer is easy to fall off due to low binding force of the organic coating layer and the steel rail substrate; thirdly, the method of spraying zinc, aluminum or zinc-aluminum alloy by electric arc or flame is adopted, but the method has complex operation and higher cost; fourthly, alloy elements such as Cr, Mo, Cu, Ni, P, Re and the like are added into the steel material of the steel rail to improve the corrosion resistance of the steel, so that the corrosion-resistant railway steel rail is obtained, but the production cost of the method is relatively high. Therefore, the existing steel rail corrosion prevention technology has certain problems and poor using effect.
Disclosure of Invention
The invention aims to provide an electrostatic spraying high-corrosion-resistance insulated steel rail. The invention has the characteristics of strong binding force between the coating and the steel rail substrate, difficult falling, simple and convenient preparation operation and low cost.
The technical scheme of the invention is as follows: the surface of the steel rail is coated with a first composite coating through high-voltage electrostatic spraying, and the first composite coating comprises the following raw materials in parts by weight: 38-75 parts of epoxy resin, 0.8-5.0 parts of curing agent, 0.2-1.5 parts of insulating additive, 0.1-1.0 part of adhesion promoter, 0.1-5.0 parts of pigment, 5-20 parts of wollastonite and 5-20 parts of barium sulfate.
In the electrostatically sprayed high-corrosion-resistance insulated steel rail, the thickness of the first composite coating is 150-.
In the electrostatically sprayed high-corrosion-resistance insulated steel rail, the second composite coating is electrostatically sprayed on the surface of the first composite coating in a high-voltage manner, and comprises the following raw materials in parts by weight: 40-75 parts of polyester resin, 2-6 parts of curing agent, 0.1-5.0 parts of pigment, 5-20 parts of wollastonite and 5-20 parts of barium sulfate.
In the electrostatically sprayed insulated rail with high corrosion resistance, the spraying voltage of the first composite coating or the second composite coating is 25 to 100KV, preferably 30 to 90KV, and more preferably 30 to 70 KV.
In the electrostatically sprayed high corrosion resistant insulated rail, the thickness of the second composite coating is 50 to 300 microns, preferably 60 to 280 microns, more preferably 60 to 250 microns, and the average particle size D50 of the second composite coating is 30 to 50 microns, preferably 35 to 40 microns.
In the aforementioned electrostatically sprayed high corrosion resistant insulated steel rail, before the electrostatic spraying, the steel rail further comprises the following operation steps:
a. carrying out high-temperature oil removal treatment on the original steel rail to remove oil stains on the surface of the steel rail to obtain a product A;
b. mechanically removing rust on the product A, and endowing the surface of the steel rail with certain roughness to obtain a product B;
c. and (3) rapidly and uniformly heating the product B to the temperature of 300 ℃ by using a medium-frequency heating combined temperature equalizer, preferably to the temperature of 250 ℃ at 150 ℃, and more preferably to the temperature of 240 ℃ at 200 ℃.
In the electrostatically sprayed high-corrosion-resistance insulated steel rail, the temperature of the high-temperature degreasing treatment is 40-100 ℃, preferably 50-70 ℃, and the roughness is Sz50-100 microns.
In the electrostatically sprayed high-corrosion-resistance insulated steel rail, after all coatings are electrostatically sprayed on the steel rail, heat preservation, solidification and cooling treatment are carried out; the heat preservation temperature is 150-.
In the electrostatic spraying high-corrosion-resistance insulated steel rail, the curing hardness is 2-3H.
Compared with the prior art, the coating is sprayed on the surface of the steel rail by optimizing the formula and the proportion of the coating, combining the adhesion promoter and the insulating additive in a certain proportion and combining an efficient composite heating mode, so that the coating has strong binding force with a steel rail matrix and is not easy to fall off, the coating can exert the best application performance on a steel rail product, the insulating property and the corrosion resistance of the steel rail are improved, the performance indexes of the coating are superior to those of the traditional corrosion-resistant steel rail, the problem of short service life of a steel rail waistline and a base due to stray current and environmental corrosion is solved, the service life of a rail is prolonged, and the running cost of the rail is reduced;
the invention adopts a coating process of 1 coating and 1 baking, has one-step forming, energy saving, environmental protection and low production cost, adopts a mode of combining medium-frequency heating and a temperature equalizer for heating, solves the problems of uneven medium-frequency heating temperature and low heating efficiency in the prior art, and improves the coating uniformity and the working efficiency of the coating.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1:
the utility model provides an electrostatic spraying's high corrosion resistant insulating rail, the surface of rail has first composite coating through high-pressure electrostatic spraying, wherein, first composite coating includes the raw materials of following parts by weight: 38-75 parts of epoxy resin, 0.8-5.0 parts of curing agent, 0.2-1.5 parts of insulating additive, 0.1-1.0 part of adhesion promoter, 0.1-5.0 parts of pigment, 5-20 parts of wollastonite and 5-20 parts of barium sulfate.
The spraying process of the first composite coating comprises the following steps:
a. the original steel rail enters a preset automatic spraying track through an automatic feeding device, enters high-temperature oil removal equipment through a transmission device for high-temperature oil removal treatment to remove oil stains on the surface of the steel rail, and the temperature of the high-temperature oil removal treatment is 40-100 ℃, so that a product A is obtained;
b. performing mechanical rust removal on the product A, wherein shot blasting rust removal can be adopted for the mechanical rust removal, oxide skin and iron rust on the surface of the steel rail are removed, and clean anchor lines with certain depth are formed on the surface of the steel rail, so that a foundation is made for the next process; the blasting mode of shot blasting is usually sand blasting or shot blasting, so that the surface cleanliness of the steel rail reaches Sa2.5 grade, the depth of an anchor line is 50-120 micrometers, the roughness of the surface of the steel rail is Sz50-100 micrometers, and a product B is obtained;
c. the product B enters high-temperature heating equipment through an automatic conduction device to be subjected to intermediate-frequency heating, the heating temperature is 120-300 ℃, the heating time is 5-25s, and then the product B enters a temperature equalizer to enable the temperature of the product B to be uniform, so that the product C is obtained; the heating mode adopts a composite heating mode of intermediate frequency rapid heating and a temperature equalizer, has high time period efficiency, saves energy and has high efficiency, and solves the problems of uneven intermediate frequency heating and low efficiency of the traditional hot air circulation heating mode;
d. the product C enters a powder spraying area, a complete and continuous first composite coating is coated on the surface of the product C through a high-voltage electrostatic spraying device, the spraying voltage is 25-100KV, the thickness of the first composite coating is 150-650 microns, and the average particle size D50 of the first composite coating is 30-50 microns, so that a product D is obtained;
e. the product D enters a heat preservation device for heat preservation treatment, the heat preservation temperature is 150-;
f. and marking, packaging and warehousing after the finished product passes quality inspection.
Besides the steel rail, the high-voltage electrostatic spraying corrosion prevention treatment can be carried out on the I-shaped steel, the H-shaped steel and the metal strip structural member by the same method.
Example 2:
the utility model provides an insulating rail of high corrosion resistance of electrostatic spraying, the surface of rail has first composite coating and second composite coating from inside to outside in proper order through high-voltage electrostatic spraying, wherein, first composite coating includes the raw materials of following parts by weight: 38-75 parts of epoxy resin, 0.8-5.0 parts of curing agent, 0.2-1.5 parts of insulating additive, 0.1-1.0 part of adhesion promoter, 0.1-5.0 parts of pigment, 5-20 parts of wollastonite and 5-20 parts of barium sulfate; the second composite coating comprises the following raw materials in parts by weight: 40-75 parts of polyester resin, 2-6 parts of curing agent, 0.1-5.0 parts of pigment, 5-20 parts of wollastonite and 5-20 parts of barium sulfate.
The spraying process of the coating comprises the following steps:
a. the original steel rail enters a preset automatic spraying track through an automatic feeding device, enters high-temperature oil removal equipment through a transmission device for high-temperature oil removal treatment to remove oil stains on the surface of the steel rail, and the temperature of the high-temperature oil removal treatment is 40-100 ℃, so that a product A is obtained;
b. performing shot blasting on the product A to remove oxide skin and iron rust on the surface of the steel rail, forming clean anchor lines with a certain depth on the surface of the steel rail, and making a foundation for the next procedure; the method for derusting by shot blasting usually selects sand blasting or shot blasting, the surface cleanliness of the steel rail reaches Sa2.5 grade, the depth of the anchor lines is 50-120 microns, the roughness of the surface of the steel rail is Sz50-100 microns, and a product B is obtained;
c. the product B enters high-temperature heating equipment through an automatic conduction device to be subjected to intermediate-frequency heating, the heating temperature is 120-300 ℃, the heating time is 5-25s, and then the product B enters a temperature equalizer to enable the temperature of the product B to be uniform, so that the product C is obtained;
d. the product C enters a powder spraying area, a complete and continuous first composite coating is coated on the surface of the product C through a high-voltage electrostatic spraying device, the spraying voltage is 25-100KV, the thickness of the first composite coating is 150-650 microns, and the average particle size D50 of the first composite coating is 30-50 microns, so that a product D is obtained;
e. the surface of the product D is subjected to high-voltage electrostatic spraying again to form a complete and continuous second composite coating, the spraying voltage of the second composite coating is 30-90KV, the thickness of the second composite coating is 50-300 micrometers, and the average particle size D50 of the second composite coating is 30-50 micrometers, so that a product E is obtained;
f. the product E enters a heat preservation device for heat preservation treatment, the heat preservation temperature is 150-;
g. and marking, packaging and warehousing after the finished product passes quality inspection.
The first composite coating has good insulating property and corrosion resistance, the second composite coating has good weather resistance, and the first composite coating and the second composite coating are combined to have more excellent insulating property, corrosion resistance and weather resistance.
Example 3:
the utility model provides an electrostatic spraying's high corrosion resistant insulating rail, the surface of rail has first composite coating through high-pressure electrostatic spraying, wherein, first composite coating includes the raw materials of following parts by weight: 50-70 parts of epoxy resin, 1.2-4.0 parts of curing agent, 0.5-1.0 part of insulating additive, 0.2-0.8 part of adhesion promoter, 1.0-4.0 parts of pigment, 10-15 parts of wollastonite and 10-15 parts of barium sulfate. The insulating additive and the adhesion promoter can adopt the commonly used auxiliary agents on the market.
The spraying process of the first composite coating comprises the following steps:
a. the original steel rail enters a preset automatic spraying track through an automatic feeding device, enters high-temperature oil removal equipment through a transmission device for high-temperature oil removal treatment to remove oil stains on the surface of the steel rail, and the temperature of the high-temperature oil removal treatment is 50-70 ℃, so that a product A is obtained;
b. performing shot blasting on the product A to remove oxide skin and iron rust on the surface of the steel rail, forming clean anchor lines with a certain depth on the surface of the steel rail, and making a foundation for the next procedure; the blasting mode of shot blasting is usually sand blasting or shot blasting, so that the surface cleanliness of the steel rail reaches Sa2.5 grade, the depth of an anchor line is 60-100 micrometers, and the roughness of the surface of the steel rail is Sz50-100 micrometers, thus obtaining a product B;
c. the product B enters high-temperature heating equipment through an automatic conduction device to be subjected to intermediate-frequency heating, the heating temperature is 200-240 ℃, the heating time is 10-20s, and then the product B enters a temperature equalizer to enable the temperature of the product B to be uniform, so that the product C is obtained;
d. the product C enters a powder spraying area, a complete and continuous first composite coating is coated on the surface of the product C through a high-voltage electrostatic spraying device, the spraying voltage is 30-70KV, the thickness of the first composite coating is 250-550 micrometers, and the average particle size D50 of the first composite coating is 38-42 micrometers, so that a product D is obtained;
e. the product D enters a heat preservation device for heat preservation treatment, the heat preservation temperature is 150-;
f. and marking, packaging and warehousing after the finished product passes quality inspection.
Example 4:
the utility model provides an electrostatic spraying's insulating rail of high corrosion resistance, the surface of rail has first composite coating and second composite coating by spraying in proper order from inside to outside, and wherein, first composite coating includes the raw materials of following parts by weight: 50-70 parts of epoxy resin, 1.2-4.0 parts of curing agent, 0.5-1.0 part of insulating additive, 0.2-0.8 part of adhesion promoter, 1.0-4.0 parts of pigment, 10-15 parts of wollastonite and 10-15 parts of barium sulfate;
the second composite coating comprises the following raw materials in parts by weight: 55-65 parts of polyester resin, 3-5 parts of curing agent, 1-2 parts of pigment, 15-20 parts of wollastonite and 10-15 parts of barium sulfate.
The spraying process of the coating comprises the following steps:
a. the original steel rail enters a preset automatic spraying track through an automatic feeding device, enters high-temperature oil removal equipment through a transmission device for high-temperature oil removal treatment to remove oil stains on the surface of the steel rail, and the temperature of the high-temperature oil removal treatment is 50-70 ℃, so that a product A is obtained;
b. performing shot blasting on the product A to remove oxide skin and iron rust on the surface of the steel rail, forming clean anchor lines with a certain depth on the surface of the steel rail, and making a foundation for the next procedure; the blasting mode of shot blasting is usually sand blasting or shot blasting, so that the surface cleanliness of the steel rail reaches Sa2.5 grade, the depth of an anchor line is 60-100 micrometers, and the roughness of the surface of the steel rail is Sz50-100 micrometers, thus obtaining a product B;
c. the product B enters high-temperature heating equipment through an automatic conduction device to be subjected to intermediate-frequency heating, the heating temperature is 200-240 ℃, the heating time is 10-20s, and then the product B enters a temperature equalizer to enable the temperature of the product B to be uniform, so that the product C is obtained;
d. the product C enters a powder spraying area, and a complete and continuous first composite coating is coated on the surface of the product C through a high-voltage electrostatic spraying device, wherein the high-voltage electrostatic spraying voltage is 30-70KV, the thickness of the first composite coating is 250-550 micrometers, and the average particle size D50 of the first composite coating is 38-42 micrometers, so that a product D is obtained;
e. the surface of the product D is subjected to high-voltage electrostatic spraying again to form a complete and continuous second composite coating, the spraying voltage of the second composite coating is 30-70KV, the thickness of the second composite coating is 60-250 micrometers, and the average particle size D50 of the second composite coating is 35-40 micrometers, so that a product E is obtained;
f. the product E enters a heat preservation device for heat preservation treatment, the heat preservation temperature is 150-;
g. and marking, packaging and warehousing after the finished product passes quality inspection.
And (3) performance testing:
1. coating performance:
the coating types in the embodiment 3 and the embodiment 4 are respectively taken, the performance test is carried out according to the corresponding national standards, and the test results are shown in the table 1.
Table 1 table of results of performance tests of the coatings
As can be seen from Table 1, the coating of the present invention has good salt spray resistance, adhesion, dielectric strength, and other properties.
2. The performance of the steel rail is as follows:
using U75V steel grade as an example, finished coated rails were produced as in examples 3 and 4 as Experimental examples 1 and 2, respectively, and uncoated original U75V steel rail as a comparative example was tested for performance according to the corresponding national standard.
The test results are shown in table 2.
TABLE 2 table of the performance test results of U75V steel rail
As can be seen from Table 2, the resistivity and dielectric strength of the coated steel rail are greatly improved.
Claims (9)
1. The utility model provides an electrostatic spraying's insulating rail of high corrosion resistance which characterized in that: the surface of the steel rail is sprayed with a first composite coating, and the first composite coating comprises the following raw materials in parts by weight: 38-75 parts of epoxy resin, 0.8-5.0 parts of curing agent, 0.2-1.5 parts of insulating additive, 0.1-1.0 part of adhesion promoter, 0.1-5.0 parts of pigment, 5-20 parts of wollastonite and 5-20 parts of barium sulfate.
2. An electrostatically sprayed high corrosion resistant insulated rail as claimed in claim 1 wherein: the thickness of the first composite coating is 150-650 microns, and the average particle size D50 of the first composite coating is 30-50 microns.
3. An electrostatically sprayed high corrosion resistant insulated rail as claimed in claim 1 wherein: the surface of the first composite coating is sprayed with a second composite coating, and the second composite coating comprises the following raw materials in parts by weight: 40-75 parts of polyester resin, 2-6 parts of curing agent, 0.1-5.0 parts of pigment, 5-20 parts of wollastonite and 5-20 parts of barium sulfate.
4. An electrostatically sprayed high corrosion resistant insulated rail according to claim 3 wherein: the spraying voltage of the first composite coating or the second composite coating is 25-100 KV.
5. An electrostatically sprayed high corrosion resistant insulated rail according to claim 3 wherein: the thickness of the second composite coating is 50-300 microns, and the average particle size D50 of the second composite coating is 30-50 microns.
6. An electrostatically sprayed high corrosion resistant insulated rail as claimed in claim 1 wherein: before the steel rail is sprayed, the method also comprises the following operation steps:
a. carrying out high-temperature oil removal treatment on the original steel rail to remove oil stains on the surface of the steel rail to obtain a product A;
b. mechanically removing rust on the product A, and endowing the surface of the steel rail with certain roughness to obtain a product B;
c. and (3) rapidly and uniformly heating the product B to 120-300 ℃ by using a medium-frequency heating combined temperature equalizer.
7. The insulated rail according to claim 6, wherein the insulating rail comprises: the temperature of the high-temperature deoiling treatment is 40-100 ℃, and the roughness is Sz50-100 microns.
8. An electrostatically sprayed high corrosion resistant insulated rail as claimed in claim 1 wherein: and after all coatings are sprayed on the steel rail, carrying out heat preservation, solidification and cooling treatment.
9. An electrostatically sprayed high corrosion resistant insulated rail as claimed in claim 8, wherein: the curing hardness is 2-3H.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360357.7A CN114149720A (en) | 2021-11-17 | 2021-11-17 | Electrostatic spraying high-corrosion-resistance insulating steel rail |
| PCT/CN2022/123935 WO2023087966A1 (en) | 2021-11-17 | 2022-10-09 | Electrostatically spray-coated high-corrosion-resistance insulating steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360357.7A CN114149720A (en) | 2021-11-17 | 2021-11-17 | Electrostatic spraying high-corrosion-resistance insulating steel rail |
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| CN114149720A true CN114149720A (en) | 2022-03-08 |
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| CN202111360357.7A Pending CN114149720A (en) | 2021-11-17 | 2021-11-17 | Electrostatic spraying high-corrosion-resistance insulating steel rail |
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| WO (1) | WO2023087966A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115073998A (en) * | 2022-07-05 | 2022-09-20 | 富佰新材料(浙江)有限公司 | Frosted high-performance self-repairing composite epoxy coating steel bar |
| WO2023087966A1 (en) * | 2021-11-17 | 2023-05-25 | 富佰新材料(浙江)有限公司 | Electrostatically spray-coated high-corrosion-resistance insulating steel rail |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109321093A (en) * | 2018-09-28 | 2019-02-12 | 湖北鑫汉通管业有限公司 | A kind of processing technology improving plastic-coated steel corrosion resistance |
| CN114149720A (en) * | 2021-11-17 | 2022-03-08 | 浙江富佰特材科技有限公司 | Electrostatic spraying high-corrosion-resistance insulating steel rail |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023087966A1 (en) * | 2021-11-17 | 2023-05-25 | 富佰新材料(浙江)有限公司 | Electrostatically spray-coated high-corrosion-resistance insulating steel rail |
| CN115073998A (en) * | 2022-07-05 | 2022-09-20 | 富佰新材料(浙江)有限公司 | Frosted high-performance self-repairing composite epoxy coating steel bar |
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| WO2023087966A1 (en) | 2023-05-25 |
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