CN112295879A - Rust prevention process for steel structure and application structure thereof - Google Patents
Rust prevention process for steel structure and application structure thereof Download PDFInfo
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- CN112295879A CN112295879A CN202011140959.7A CN202011140959A CN112295879A CN 112295879 A CN112295879 A CN 112295879A CN 202011140959 A CN202011140959 A CN 202011140959A CN 112295879 A CN112295879 A CN 112295879A
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/08—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by flames
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
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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
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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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
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
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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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Abstract
The application discloses rust-resistant technology of steel construction and application structure thereof, including S1 surface treatment: the welded steel member can be subjected to integral shot blasting treatment through shot blasting equipment, so that the surface of the steel member can be cleaned of rust, welding spatters and oxides, and the surface of the steel member can be kept to have certain roughness; and S2 soot blowing: performing soot blowing treatment on the surface of the steel member obtained in the step S1 to remove debris attached to the surface of the steel member; s3 primer coating: heating the primer to a proper temperature to enable the primer to be in a molten state, adopting a high-pressure spraying technology to impact and attach the primer to the surface of a steel structure at a certain speed, then drying the formed metal protective coating, and repeatedly spraying for 3-4 times according to the operation. The surface of the steel member is coated with a primer, an intermediate paint and a finish respectively, and the primer and the intermediate paint are cleaned and polished after being coated, so that the connectivity among the primer, the intermediate paint and the finish can be enhanced.
Description
Technical Field
The application relates to an antirust process, in particular to an antirust process of a steel structure and an application structure thereof.
Background
The steel structure is a structure mainly made of steel, is one of main building structure types, and has the characteristics of high strength, light dead weight, good integral rigidity and strong deformability, so the steel structure is particularly suitable for building large-span, ultrahigh and extra-heavy buildings; the material has good homogeneity and isotropy, belongs to an ideal elastomer and most conforms to the basic assumption of general engineering mechanics; the material has good plasticity and toughness, can have larger deformation, can well bear power load, has short construction period and high industrialization degree, and can be used for professional production with high mechanization degree.
The traditional steel structure rust prevention process is simple, the service life of a rust prevention layer formed on the surface of a steel structure is short, and the rust prevention and removal capabilities are general. Therefore, the rust prevention process of the steel structure and the application structure thereof are provided aiming at the problems.
Disclosure of Invention
The rust prevention process for the steel structure specifically comprises the following steps:
s1 flame derusting: the rust layer on the surface of the matrix is removed by shoveling, then the matrix is baked or heated by flame, and a power steel wire brush is used for cleaning the heating surface in a matched manner, so that the method is suitable for removing old anticorrosive coatings or metal surface engineering with oil immersion, is not suitable for thin-wall metal equipment and pipelines, and cannot be used for rust removal engineering of annealed steel and hardenable steel;
s2 surface treatment: the welded steel member can be subjected to integral shot blasting treatment through shot blasting equipment, so that the rust, welding spatters and oxides on the surface of the steel member can be removed, and meanwhile, the surface of the steel member can be kept to have certain roughness, and the subsequent treatment is facilitated;
and S3 soot blowing: performing soot blowing treatment on the surface of the steel member obtained in the step S1, so that debris attached to the surface of the steel member can be conveniently removed, and secondary pollution is avoided;
s4 primer coating: heating the primer to a proper temperature to enable the primer to be in a molten state, adopting a high-pressure spraying technology to impact and attach the primer to the surface of a steel structure at a certain speed, then drying the formed metal protective coating, and repeatedly spraying for 3-4 times according to the operation to ensure that the thickness can reach a preset thickness;
s5 intermediate paint coating: drying the primer in the step S3, cleaning and polishing the surface of the primer to form a rough surface on the surface of the primer, and spraying the intermediate paint on the surface of the primer by adopting a high-pressure technology to enhance the adhesion between the primer and the intermediate paint;
and (3) coating of S6 finish: and (5) drying the intermediate paint in the step S4, cleaning and polishing the surface of the intermediate paint to form a rough surface on the surface of the intermediate paint, and spraying the finish paint on the surface of the intermediate paint by adopting a high-pressure technology, so that the adhesion between the intermediate paint and the finish paint can be enhanced.
Further, the shot blasting device in the step S2 adopts an eight-head suspension type shot blasting machine, and the used abrasive is formed by mixing S280 type steel shots and G30 type steel shots 6: 4, preparing the composition.
Furthermore, in the step S2, the shot blasting device will generate powder when working, and should be equipped with an automatic mechanical dust processing device, so as to protect the environment.
Further, the number of the primer layers in the step S4 is 3-4, and the thickness of each primer layer is 2.0-2.5 mm.
Furthermore, the high-pressure spraying technology adopts a high-pressure spray gun, the caliber of the spray nozzle and the spraying pressure are adjusted, and the air pressure of the high-pressure spray gun is 0.4-0.7N/mm 2.
Furthermore, the primer, the intermediate paint and the finish paint are respectively an epoxy zinc-rich paint, an epoxy micaceous iron intermediate paint and a stainless steel paint, the primer, the intermediate paint and the finish paint can be surface-dried within 6-8 hours, and the next coating is not suitable before the surface drying.
Further, the distance between the nozzle and the working surface is controlled when the primer, the intermediate paint and the finish paint are sprayed, the distance between the spray gun and the working surface is about 10mm generally, and the angle between the spray gun and the working surface is kept vertical.
Further, the nozzles should be moved in parallel during coating, should be balanced during movement, have consistent speed, maintain the coating uniform, and should be carried out when the upper paint film is dried during each coating.
Further, the top coat is generally sprayed 1 to 2 times in the step S6, and should be completely covered with the intermediate paint, and the amount of the paint is generally 0.5 to 0.8kg/m 2.
Further, the application structure comprises the following steps:
firstly, a steel member is placed inside an eight-throwing-head suspension type shot blasting machine, a fixed shot blasting chamber is usually arranged inside the shot blasting machine, the steel member to be cleaned rotates or moves in the shot blasting chamber, the shot blasting chamber is generally provided with a plurality of shot blasting devices which are arranged at different positions, and shots are thrown from different directions so as to improve the cleaning efficiency and the cleaning quality of the shot blasting machine; the hanging type shot blasting machine can be provided with a plurality of lifting hooks on a catenary according to the requirements of steel members to be cleaned, the steel members are hung on the lifting hooks during cleaning and automatically turn over while moving forwards, and the steel members are assembled and disassembled outside the shot blasting chamber and cleaned indoors;
then, the blower can be used for blowing dust on the surface of the steel member, and high-pressure wind can remove scraps and dust attached to the surface of the steel member, so that secondary pollution is avoided;
then coating a primer, wherein the primer adopts epoxy zinc-rich paint, heating the epoxy zinc-rich paint to a molten state, and spraying the epoxy zinc-rich paint to the surface of the steel member by using a high-pressure spray gun so as to uniformly spray the epoxy zinc-rich paint for 3-4 times; drying the primer, cleaning and polishing the surface of the primer to form a rough surface on the surface of the primer, and spraying the micaceous iron oxide intermediate paint on the surface of the primer; and finally, drying the intermediate paint, cleaning and polishing the surface of the intermediate paint to form a rough surface on the surface of the intermediate paint, spraying the stainless steel paint on the surface of the intermediate paint by using a high-pressure spray gun, and spraying the finish paint for 1-2 times to keep the surface smooth.
The beneficial effect of this application is: the application provides a rust-proof process of a steel structure with good rust removing and rust-proof capabilities and an application structure thereof.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic overall perspective view of an embodiment of the present application;
FIG. 2 is a process flow diagram of one embodiment of the present application.
In the figure: 1. steel member, 2, primer, 3, intermediate paint, 4 and finish paint.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-2, a rust-proof process for a steel structure and an application structure thereof specifically include the following steps:
s1 flame derusting: the rust layer on the surface of the matrix is removed by shoveling, then the matrix is baked or heated by flame, and a power steel wire brush is used for cleaning the heating surface in a matched manner, so that the method is suitable for removing old anticorrosive coatings or metal surface engineering with oil immersion, is not suitable for thin-wall metal equipment and pipelines, and cannot be used for rust removal engineering of annealed steel and hardenable steel;
s2 surface treatment: the welded steel member 1 can be subjected to integral shot blasting treatment through shot blasting equipment, so that the rust, welding spatters and oxides on the surface of the steel member 1 can be removed, and meanwhile, the surface of the steel member 1 can be kept to have certain roughness, so that the subsequent treatment is facilitated;
and S3 soot blowing: performing soot blowing treatment on the surface of the steel member 1 obtained in the step S1, so that debris attached to the surface of the steel member 1 can be conveniently removed, and secondary pollution is avoided;
s4 primer coating: heating the primer 2 to a proper temperature to enable the primer to be in a molten state, adopting a high-pressure spraying technology to impact and attach the primer 2 to the surface of a steel structure at a certain speed, then drying the formed metal protective coating, and repeatedly spraying for 3-4 times according to the operation to ensure that the metal protective coating can reach a preset thickness;
s5 intermediate paint coating: drying the primer 2 in the step S3, cleaning and polishing the surface of the primer 2 to form a rough surface on the surface of the primer 2, and spraying the intermediate paint 3 on the surface of the primer 2 by using a high-pressure technology to enhance the adhesion between the primer 2 and the intermediate paint 3;
and (3) coating of S6 finish: and (4) drying the intermediate paint 3 in the step S4, cleaning and polishing the surface of the intermediate paint 3 to form a rough surface on the surface of the intermediate paint 3, and spraying the finish paint 4 on the surface of the intermediate paint 3 by adopting a high-pressure technology, so that the adhesion between the intermediate paint 3 and the finish paint 4 can be enhanced.
Further, the shot blasting device in the step S2 adopts an eight-head suspension type shot blasting machine, and the used abrasive is formed by mixing S280 type steel shots and G30 type steel shots 6: 4, preparing the composition.
Furthermore, in the step S2, the shot blasting device will generate powder when working, and should be equipped with an automatic mechanical dust processing device, so as to protect the environment.
Further, the number of the primer 2 layers in the step S4 is 3-4, and the thickness of each primer 2 layer is 2.0-2.5 mm.
Furthermore, the high-pressure spraying technology adopts a high-pressure spray gun, the caliber of the spray nozzle and the spraying pressure are adjusted, and the air pressure of the high-pressure spray gun is 0.4-0.7N/mm 2.
Furthermore, the primer 2, the intermediate paint 3 and the finish paint 4 are respectively an epoxy zinc-rich paint, an epoxy micaceous iron intermediate paint and a stainless steel paint, the primer 2, the intermediate paint 3 and the finish paint 4 can be surface-dried after 6-8 hours, and the next coating is not suitable before surface drying.
Further, the distance between the nozzle and the working surface should be controlled when spraying the primer 2, the intermediate paint 3 and the finish paint 4, and the distance between the spray gun and the working surface should be about 10mm, and the angle between the spray gun and the working surface should be kept perpendicular.
Further, the nozzles should be moved in parallel during coating, should be balanced during movement, have consistent speed, maintain the coating uniform, and should be carried out when the upper paint film is dried during each coating.
Further, the top coat is generally sprayed 1 to 2 times in the step S6, and should be completely covered with the intermediate paint 3, and the amount of the paint is generally 0.5 to 0.8kg/m 2.
Further, the application structure comprises the following steps:
firstly, a steel member 1 is placed inside an eight-throwing-head suspension type shot blasting machine, a fixed shot blasting chamber is usually arranged inside the shot blasting machine, the steel member 1 to be cleaned rotates or moves in the shot blasting chamber, the shot blasting chamber is generally provided with a plurality of shot blasting devices which are arranged at different positions and throw shots from different directions, so that the cleaning efficiency and the cleaning quality of the shot blasting machine are improved; the hanging type shot blasting machine can be provided with a plurality of lifting hooks on a catenary according to the requirements of the steel member 1 to be cleaned, the steel member 1 is hung on the lifting hooks during cleaning and automatically overturns when moving forwards, and the steel member 1 is assembled and disassembled outside the shot blasting chamber and cleaned indoors;
then, the blower can be used for blowing dust on the surface of the steel member 1, and high-pressure wind can remove chips and dust attached to the surface of the steel member 1, so that secondary pollution is avoided;
then coating a primer 2, wherein the primer 2 is an epoxy zinc-rich coating, heating the epoxy zinc-rich coating to a molten state, and spraying the epoxy zinc-rich coating to the surface of the steel member 1 by using a high-pressure spray gun so as to uniformly spray the epoxy zinc-rich coating for 3-4 times; drying the primer 2, cleaning and polishing the surface of the primer 2 to form a rough surface on the surface of the primer 2, and spraying the micaceous iron oxide intermediate paint on the surface of the primer 2; and finally, drying the intermediate paint 3, cleaning and polishing the surface of the intermediate paint 3 to form a rough surface on the surface of the intermediate paint 3, spraying the stainless steel paint on the surface of the intermediate paint 3 by using a high-pressure spray gun, and spraying the finish paint 4 for 1-2 times to keep the surface smooth.
The application has the advantages that: the surface of the steel member is coated with the primer, the intermediate paint and the finish paint respectively, and the primer and the intermediate paint are cleaned and ground after being coated, so that the connectivity among the primer, the intermediate paint and the finish paint can be enhanced, and the rust prevention and removal capabilities of the surface of the steel member are enhanced.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The rust prevention process of the steel structure is characterized by comprising the following steps: the method specifically comprises the following steps:
s1 flame derusting: the rust layer on the surface of the matrix is removed by shoveling, then the matrix is baked or heated by flame, and a power steel wire brush is used for cleaning the heating surface in a matched manner, so that the method is suitable for removing old anticorrosive coatings or metal surface engineering with oil immersion, is not suitable for thin-wall metal equipment and pipelines, and cannot be used for rust removal engineering of annealed steel and hardenable steel;
s2 surface treatment: the welded steel member (1) can be subjected to integral shot blasting treatment through shot blasting equipment, so that rust, welding spatters and oxides on the surface of the steel member (1) can be removed, and meanwhile, the surface of the steel member (1) can be kept to have certain roughness, and subsequent treatment is facilitated;
and S3 soot blowing: performing soot blowing treatment on the surface of the steel member (1) obtained in the step S1, so that debris attached to the surface of the steel member (1) can be conveniently removed, and secondary pollution is avoided;
s4 primer coating: heating the primer (2) to a proper temperature to enable the primer to be in a molten state, adopting a high-pressure spraying technology to impact and attach the primer (2) to the surface of a steel structure at a certain speed, then drying the formed metal protective coating, and repeatedly spraying for 3-4 times according to the operation to ensure that the thickness can reach a preset thickness;
s5 intermediate paint coating: drying the primer (2) in the step S3, cleaning and polishing the surface of the primer (2) to form a rough surface on the surface of the primer (2), and spraying the intermediate paint (3) on the surface of the primer (2) by using a high-pressure technology, so that the adhesion between the primer (2) and the intermediate paint (3) can be enhanced;
and (3) coating of S6 finish: and (2) drying the intermediate paint (3) in the step S4, cleaning and polishing the surface of the intermediate paint (3) to form a rough surface on the surface of the intermediate paint (3), and spraying the finish paint (4) on the surface of the intermediate paint (3) by adopting a high-pressure technology, so that the adhesion between the intermediate paint (3) and the finish paint (4) can be enhanced.
2. The rust prevention process for a steel structure according to claim 1, characterized in that: the shot blasting equipment in the step S2 adopts an eight-throw head suspension type shot blasting machine, and the used abrasive materials are formed by mixing S280 type steel shots and G30 type steel shots 6: 4, preparing the composition.
3. The rust prevention process for a steel structure according to claim 1, characterized in that: in the step S2, the shot blasting device will generate powder when working, and should be equipped with an automatic mechanical dust processing device, so as to protect the environment.
4. The rust prevention process for a steel structure according to claim 1, characterized in that: the number of the layers of the primer (2) in the step S4 is 3-4, and the thickness of each layer of the primer (2) is 2.0-2.5 mm.
5. The rust prevention process for a steel structure according to claim 1, characterized in that: the high-pressure spraying technology adopts a high-pressure spray gun, the caliber of the spray nozzle and the spraying pressure are adjusted, and the air pressure of the high-pressure spray gun is 0.4-0.7N/mm 2.
6. The rust prevention process for a steel structure according to claim 5, characterized in that: the primer (2), the intermediate paint (3) and the finish paint (4) are respectively an epoxy zinc-rich paint, an epoxy micaceous iron intermediate paint and a stainless steel paint, the primer (2), the intermediate paint (3) and the finish paint (4) can be surface-dried after 6-8 hours, and the next coating is not suitable before surface drying.
7. The rust prevention process for a steel structure according to claim 6, characterized in that: and the distance between the spray nozzle and the working surface is controlled when the primer (2), the intermediate paint (3) and the finish paint (4) are sprayed, the distance between a spray gun and the working surface is about 10mm generally, and the angle between the spray gun and the working surface is kept vertical.
8. The rust prevention process for a steel structure according to claim 7, characterized in that: the spray nozzles should move in parallel during coating, should be balanced during movement, have consistent speed, keep the coating uniform, and should be carried out when the upper paint film is dried during each layer of spraying.
9. The rust prevention process for a steel structure according to claim 1, characterized in that: the top coat is generally sprayed 1-2 times in said step S6, and should be completely covered with the intermediate paint (3), and the amount of the paint is generally 0.5-0.8kg/m 2.
10. An application structure according to any one of claim 1, wherein: the application structure comprises the following steps:
firstly, a steel member (1) is placed inside an eight-throwing-head suspension type shot blasting machine, a fixed shot blasting chamber is usually arranged inside the shot blasting machine, the cleaned steel member (1) rotates or moves in the shot blasting chamber, the shot blasting chamber is generally provided with a plurality of shot blasting devices which are arranged at different positions and throw shots from different directions, so that the cleaning efficiency and the cleaning quality of the shot blasting machine are improved; the hanging type shot blasting machine can be provided with a plurality of lifting hooks on a catenary according to the requirements of the steel member (1) to be cleaned, the steel member (1) is hung on the lifting hooks during cleaning and automatically overturns when moving forwards, and the steel member (1) is loaded and unloaded outside the shot blasting chamber and cleaned indoors;
then, the blower can be used for blowing dust on the surface of the steel member (1), and high-pressure wind can remove scraps and dust attached to the surface of the steel member (1) so as to avoid secondary pollution;
then coating the primer (2), wherein the primer (2) adopts epoxy zinc-rich paint, and then heating the epoxy zinc-rich paint to a molten state, and at the moment, spraying the epoxy zinc-rich paint to the surface of the steel member (1) by using a high-pressure spray gun so as to uniformly spray the epoxy zinc-rich paint for 3-4 times; drying the primer (2), cleaning and polishing the surface of the primer (2) to form a rough surface on the surface of the primer (2), and spraying the epoxy micaceous iron intermediate paint on the surface of the primer (2); and finally, drying the intermediate paint (3), cleaning and polishing the surface of the intermediate paint (3) to form a rough surface on the surface of the intermediate paint (3), spraying the stainless steel paint on the surface of the intermediate paint (3) by using a high-pressure spray gun, and spraying the finish paint (4) for 1-2 times to keep the surface smooth.
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| CN202011140959.7A CN112295879A (en) | 2020-10-22 | 2020-10-22 | Rust prevention process for steel structure and application structure thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117999A (en) * | 2021-04-19 | 2021-07-16 | 广西天正钢结构有限公司 | Coating process for anticorrosive coating on surface of steel structure |
| CN113182153A (en) * | 2021-03-23 | 2021-07-30 | 哈尔滨锅炉厂有限责任公司 | Boiler steel structure outer surface defect repairing construction method |
| CN113210238A (en) * | 2021-06-16 | 2021-08-06 | 上海青济新材料发展有限公司 | Container preparation process and container |
| CN114774935A (en) * | 2022-04-11 | 2022-07-22 | 上海建冶科技股份有限公司 | Steel member surface roughness control method for laser rust removal |
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| CN113210238A (en) * | 2021-06-16 | 2021-08-06 | 上海青济新材料发展有限公司 | Container preparation process and container |
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