CN113102204A - Novel anti-stripping type anti-rust process for steel structure - Google Patents
Novel anti-stripping type anti-rust process for steel structure Download PDFInfo
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- CN113102204A CN113102204A CN202110388060.5A CN202110388060A CN113102204A CN 113102204 A CN113102204 A CN 113102204A CN 202110388060 A CN202110388060 A CN 202110388060A CN 113102204 A CN113102204 A CN 113102204A
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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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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- 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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- 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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F15/00—Other methods of preventing corrosion or incrustation
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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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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses a novel anti-stripping rust process for a steel structure, which belongs to the technical field of steel structures and can be used for uniformly welding a plurality of welding magnetic capsules on the surface of a steel structure before coating an anti-stripping rust coating, then coating the anti-stripping rust coating, attaching a plurality of reinforcing flakes on the anti-stripping rust coating, adsorbing the reinforcing flakes by virtue of the magnetic attraction effect of the welding magnetic capsules, enabling the reinforcing flakes to automatically migrate to splice and cover the welding magnetic capsules, improving the strength of the formed coating, improving the impermeability of the coating, enabling the coating not to be stripped easily due to the magnetic attraction effect between the welding magnetic capsules and the reinforcing flakes, enabling the stripped part to reset to form temporary rust prevention with high probability under the magnetic attraction effect of the welding magnetic capsules even if the stripping phenomenon occurs, gaining precious time for coating repair, and avoiding the steel structure from being directly exposed to the external environment, obviously improve the rust resistance of the steel structure and prolong the service life of the steel structure.
Description
Technical Field
The invention relates to the technical field of steel structures, in particular to a novel anti-stripping type anti-rust process for a steel structure.
Background
Steel structures are structures composed of steel materials and are one of the main building structure types. The structure mainly comprises steel beams, steel columns, steel trusses and other members made of section steel, steel plates and the like, and rust removing and preventing processes such as silanization, pure manganese phosphating, washing drying, galvanization and the like are adopted. The components or parts are typically joined by welds, bolts or rivets. Because of its light dead weight, and construction is simple and convenient, widely apply to fields such as large-scale factory building, venue, superelevation layer.
The steel has the characteristics of high strength, light dead weight, good integral rigidity and strong deformation resistance, so the steel is particularly suitable for building large-span, ultrahigh and overweight 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 deform greatly and can bear dynamic load well; the construction period is short; the steel structure has high industrialization degree, can be produced professionally with high mechanization degree, has poor corrosion resistance of the steel structure, and is easy to rust particularly in the environment of moist and corrosive media. Generally, the steel structure needs to be derusted, galvanized or painted, and needs to be maintained regularly. For an ocean platform structure in seawater, special measures such as zinc block anode protection and the like are needed to prevent corrosion.
However, after the existing steel structure is subjected to rust prevention treatment, rust prevention protection is provided only within a limited period of time, and in the using process of the steel structure, the situation that the rust prevention coating is partially peeled off inevitably occurs, once the peeling situation occurs, the rust prevention coating loses the effect, the steel structure is exposed to the external environment, and the service life is shortened due to corrosion easily.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a novel anti-stripping rust-proof process for a steel structure, which can be used for uniformly welding a plurality of welding magnetic capsules on the surface of the steel structure before coating an anti-stripping rust-proof coating, then coating the anti-stripping rust-proof coating, attaching a plurality of reinforcing flakes on the anti-stripping rust coating, adsorbing the reinforcing flakes by means of the magnetic attraction action of the welding magnetic capsules, and enabling the reinforcing flakes to automatically migrate to splice and cover the welding magnetic capsules, thereby not only improving the strength of the formed coating, but also improving the anti-permeability of the coating, and enabling the coating not to be stripped easily under the magnetic attraction action between the welding magnetic capsules and the reinforcing flakes, even if the stripping phenomenon occurs, the stripped part can be reset to form temporary rust-proof property with high probability under the magnetic attraction action of the welding magnetic capsules, thereby gaining valuable time for coating repair and avoiding the direct exposure of the steel structure to the external, obviously improve the rust resistance of the steel structure and prolong the service life of the steel structure.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A novel anti-stripping rust-proof process for a steel structure comprises the following steps:
s1, performing surface treatment on the steel structure to remove rust, oxide skin and old paint film attachments which are not firmly attached on the surface of the steel structure;
s2, uniformly welding the welding magnetic capsules to the surface of the steel structure, cleaning welding slag, and preparing an antirust coating for later use;
s3, coating the antirust paint on the surface of the steel structure, completely covering the welding magnetic capsule, and keeping the thickness of the paint uniform;
s4, attaching a plurality of reinforcing scales to the antirust coating, and then automatically transferring to splice and cover the welding magnetic capsules;
s5, heating and curing the antirust paint at the heating temperature of 40-60 ℃, and finishing the surface after finishing.
Further, weld the magnetic bag in step S2 including end magnetic sheet, outer bag membrane and a plurality of solder joint, outer bag membrane connects in the one end of end magnetic sheet, and outer bag membrane intussuseption is filled with the thermosetting material, the solder joint evenly sets up in end magnetic sheet edge, and end magnetic sheet has stronger magnetism and inhales the effect, and outer bag membrane can carry out certain deformation and increase the area of contact with the coating to improve the cohesion, and the shape that thermal curing material can solidify outer bag membrane after the heating is fixed, and the solder joint then is used for welding end magnetic sheet at steel construction surface.
Further, the antirust coating in the step S2 is composed of a component A and a component B according to a mass ratio of 3-4:1, wherein the component A is composed of the following components in parts by weight: 20-50 parts of epoxy resin, 1-10 parts of epoxy diluent, 6-20 parts of cosolvent, 5-15 parts of zinc powder, 0.8-1 part of organic bentonite, 0.1-2 parts of dispersant and 0.1-2 parts of defoamer; the component B comprises the following components in parts by weight: 20-70 parts of curing agent, 30-50 parts of deionized water and 0.5-2 parts of wetting agent.
Furthermore, the ratio of the thickness of the coating to the thickness of the magnetic welding capsules in the step S3 is 2-3:1, the ratio of the distance between the adjacent magnetic welding capsules to the width of the magnetic welding capsules is 0.5-0.8:1, so that good bonding force between the coating and the magnetic welding capsules can be ensured, the strength of the coating is enhanced, in addition, the magnetic field of the magnetic welding capsules can cover the whole coating, and the whole range has the effect of preventing peeling.
Further, the reinforcement scale in step S4 includes outer graphite layer and interior ferromagnetic layer of symmetric connection, the thickness of reinforcement scale reduces to the edge from the centre gradually, and outer graphite layer plays the effect of reinforcing coating intensity, and interior ferromagnetic layer then is used for responding to the magnetism effect of welding the magnetic pocket and plays the effect of preventing peeling off, and thick edge is thin in the middle of the thickness of reinforcement scale, and this is because the reinforcement scale is concatenation distribution, consequently can guarantee that the intraformational reinforcement scale thickness of coating is even relatively, and the coating distributes more rationally, both can guarantee that intensity obtains promoting, guarantee excellent rust resisting property simultaneously.
Furthermore, the end, far away from outer graphite layer, of inner ferromagnetic layer is connected with a plurality of evenly distributed from disconnected poles, the end, far away from inner ferromagnetic layer, of self-disconnected pole is connected with the magnetic expansion ball, and the self-disconnected pole plays the effect of connecting magnetic expansion ball and reinforcement scale, and the magnetic expansion ball can sink into the outer capsule membrane under the magnetic attraction effect of bottom magnetic sheet to fix after the outer capsule membrane solidifies, can further improve the anti-spalling nature of reinforcement scale.
Further, the self-breaking rod comprises an outer connecting end, an easy-breaking end and an inner connecting end, the easy-breaking end is connected between the outer connecting end and the inner connecting end, the outer connecting end is connected with the inner ferromagnetic layer, the inner connecting end is connected with the magnetic expansion ball, when the reinforcing scale is still accidentally peeled off, the easy-breaking end can break first, and the outer connecting end and the inner connecting end are separated and are opened with the outside at the same time, so that the outer connecting end and the inner connecting end are respectively unfolded.
Furthermore, the external connection end and the internal connection end are both made of hard materials and are made into hollow tubular structures, the breakable end is made of fragile materials and is made into the hollow tubular structures, the external connection end is filled with self-heating materials, the internal connection end is filled with hot melt materials, the self-heating materials in the external connection end can immediately generate oxidation reaction with oxygen in the air after leakage, oxidation protection of the steel structure is achieved, meanwhile, heat can be generated to heat the internal connection end, the hot melt materials are forced to melt, then the hot melt materials are extruded out under the action of thermal expansion of the magnetic expansion ball, covering isolation is formed in a peeling area, the external environment is temporarily isolated, and technicians are prompted to repair the hollow tubular structures in time.
Further, the magnetism ball that expands includes heat conduction spherical shell, elastic extrusion membrane and thermal energy gas, the heat conduction spherical shell is close to and offers jaggedly from disconnected pole one end, elastic extrusion membrane covers in breach department, thermal energy gas fills between elastic extrusion membrane and heat conduction spherical shell, and thermal energy gas in the heat conduction spherical shell can expand after receiving the heating, then extrudes the interior hot melt material of in-connection end through elastic extrusion membrane to realize interim restoration.
Further, twice the width of the reinforcing scale in the step S4 is greater than the maximum distance between the adjacent pair of welding magnetic capsules, the thickness of the reinforcing scale is less than the thickness of the coating, so that the reinforcing scale is in a splicing state when being attached, the mechanical strength of the coating is obviously improved, the impermeability of the coating is improved, and the peeling phenomenon is not easy to occur.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme can be through before coating anti-rust coating, evenly weld a plurality of welding magnetic capsules on the steel construction surface, then coating anti-rust coating again, and get a plurality of reinforcement scales and paste and cover on anti-rust coating, rely on the magnetic attraction effect of welding the magnetic capsule to adsorb the reinforcement scale, the reinforcement scale is from the migration realization concatenation of butt welding magnetic capsule and is covered, not only can improve the intensity after the coating shaping, can also improve the impermeability of coating, and based on the magnetic attraction effect between welding magnetic capsule and the reinforcement scale, make the difficult phenomenon that peels off of appearing in the coating, even the precious phenomenon that peels off appears, under the magnetic attraction effect of welding the magnetic capsule, the partial high probability that peels off also can reset and form interim rust-resistant, the time of winning for the coating restoration, avoid the steel construction direct exposure in external environment, show the antirust property who improves the steel construction and prolong its life.
(2) Weld the magnetic bag and include end magnetic sheet, outer bag membrane and a plurality of solder joint, outer bag membrane is connected in the one end of end magnetic sheet, and outer bag membrane intussuseption is filled with the hot setting material, the solder joint evenly sets up in end magnetic sheet edge, end magnetic sheet has stronger magnetic attraction effect, outer bag membrane can carry out certain deformation and increase the area of contact with the coating to improve the cohesion, and hot setting material can solidify after the heating and fix the shape of outer bag membrane, the solder joint then is used for welding end magnetic sheet at the steel construction surface.
(3) The ratio of the thickness of the coating to the thickness of the magnetic welding capsules is 2-3:1, the ratio of the distance between the adjacent magnetic welding capsules to the width of the magnetic welding capsules is 0.5-0.8:1, so that good bonding force between the coating and the magnetic welding capsules can be ensured, the strength of the coating is enhanced, in addition, the magnetic field of the magnetic welding capsules can cover the whole coating, and the anti-stripping effect is achieved in the whole range.
(4) The reinforcement scale includes outer graphite layer and interior ferromagnetic layer of symmetric connection, the thickness of reinforcement scale reduces to the edge from the centre gradually, outer graphite layer plays the effect of reinforcing coating intensity, interior ferromagnetic layer then is used for responding to the magnetism effect of welding the magnetic pocket and plays the effect of anti-stripping, thick edge is thin in the middle of the thickness of reinforcement scale, this is because the reinforcement scale is concatenation distribution, consequently, can guarantee that the intraformational reinforcement scale thickness of coating is even relatively, the coating distributes more rationally, both can guarantee that intensity obtains promoting, guarantee excellent antirust property simultaneously.
(5) The end, far away from outer graphite layer, of inner ferromagnetic layer is connected with a plurality of evenly distributed from disconnected poles, and the end, far away from inner ferromagnetic layer, of self-disconnected pole is connected with the magnetic expansion ball, and the magnetic expansion ball plays the effect of connecting magnetic expansion ball and reinforcement scale, and the magnetic expansion ball can sink into the outer capsule membrane under the magnetic attraction effect of bottom magnetic sheet to fix after the outer capsule membrane solidifies, can further improve the anti-spalling nature of reinforcement scale.
(6) The self-breaking rod comprises an outer connecting end, an inner connecting end and an inner connecting end, the outer connecting end is connected between the outer connecting end and the inner connecting end, the outer connecting end is connected with the inner ferromagnetic layer, the inner connecting end is connected with the magnetic expansion ball, when the reinforcing scale is still accidentally peeled off, the outer connecting end and the inner connecting end are separated and are opened with the outside simultaneously, and then the outer connecting end and the inner connecting end are respectively unfolded.
(7) Connect end and interconnection end outward and all adopt hard material to make hollow tubular structure, the cavity tubular structure is made to breakable end adoption fragile material, it is filled with self-heating material to connect the end intussuseption outward, the intussuseption of interconnection end is filled with hot melt material, connect the interior self-heating material of end outward after leaking, can take place oxidation reaction with the oxygen in the air immediately, both realize the oxidation protection to the steel construction, can produce the heat simultaneously and heat the interconnection end, and force hot melt material to melt, then extrude hot melt material under the effect that the magnetic expansion ball is heated inflation, form the cover in the region of peeling off and keep apart, the isolated external environment of temporary, and suggestion technical staff in time repairs.
(8) The magnetic expansion ball comprises a heat conduction ball shell, an elastic extrusion film and thermal expansion gas, wherein a notch is formed in one end, close to the self-breaking rod, of the heat conduction ball shell, the elastic extrusion film covers the notch, the thermal expansion gas is filled between the elastic extrusion film and the heat conduction ball shell, the thermal expansion gas in the heat conduction ball shell can expand after being heated, and then hot melt materials in the inner connecting end are extruded through the elastic extrusion film, so that temporary repair is realized.
(9) The two times of the width of the reinforcing scale are greater than the maximum distance between the adjacent pair of welding magnetic capsules, the thickness of the reinforcing scale is smaller than the thickness of the coating, the reinforcing scale is guaranteed to be in a splicing state when being pasted, the mechanical strength of the coating is obviously improved, the impermeability is improved, and meanwhile, the peeling phenomenon is not easy to occur.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic structural diagram of a welded magnetic capsule of the present invention;
FIG. 3 is a schematic view of the structure of a reinforcing flake of the present invention;
FIG. 4 is a schematic structural view of the self-breaking rod of the present invention;
fig. 5 is a schematic structural view of the magnetic expansion ball of the present invention.
The reference numbers in the figures illustrate:
1 welding magnetic capsule, 11 bottom magnetic sheets, 12 outer capsule film, 13 welding points, 2 reinforcing scales, 21 outer graphite layer, 22 inner ferromagnetic layer, 3 self-breaking rod, 31 outer connecting end, 32 easy-breaking end, 33 inner connecting end, 4 magnetic expansion ball, 41 heat conduction ball shell, 42 elastic extrusion film and 43 thermal expansion gas.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a novel anti-peeling rust-proof process for a steel structure includes the following steps:
s1, performing surface treatment on the steel structure to remove rust, oxide skin and old paint film attachments which are not firmly attached on the surface of the steel structure;
s2, uniformly welding the welding magnetic capsules 1 to the surface of a steel structure, cleaning welding slag, and preparing an antirust coating for later use;
s3, coating the antirust paint on the surface of the steel structure, completely covering the welding magnetic capsule 1, and keeping the thickness of the paint uniform;
s4, a plurality of reinforcing scales 2 are attached to the antirust coating, and then the reinforcing scales are automatically moved to splice and cover the welding magnetic capsule 1;
s5, heating and curing the antirust paint at the heating temperature of 40-60 ℃, and finishing the surface after finishing.
Referring to fig. 2, the magnetic welding capsule 1 in step S2 includes a bottom magnetic sheet 11, an outer capsule 12 and a plurality of welding spots 13, the outer capsule 12 is connected to one end of the bottom magnetic sheet 11, the outer capsule 12 is filled with a thermosetting material, the welding spots 13 are uniformly disposed at the edge of the bottom magnetic sheet 11, the bottom magnetic sheet 11 has a strong magnetic attraction effect, the outer capsule 12 can deform to increase the contact area with the paint, so as to improve the bonding force, the thermosetting material can be cured to fix the shape of the outer capsule 12 after heating, and the welding spots 13 are used for welding the bottom magnetic sheet 11 on the surface of the steel structure.
The antirust coating in the step S2 is composed of a component A and a component B according to the mass ratio of 3-4:1, wherein the component A is composed of the following components in parts by weight: 20-50 parts of epoxy resin, 1-10 parts of epoxy diluent, 6-20 parts of cosolvent, 5-15 parts of zinc powder, 0.8-1 part of organic bentonite, 0.1-2 parts of dispersant and 0.1-2 parts of defoamer; the component B comprises the following components in parts by weight: 20-70 parts of curing agent, 30-50 parts of deionized water and 0.5-2 parts of wetting agent.
The ratio of the thickness of the coating to the thickness of the welding magnetic capsules 1 in the step S3 is 2-3:1, the ratio of the distance between the adjacent welding magnetic capsules 1 to the width of the welding magnetic capsules 1 is 0.5-0.8:1, so that good bonding force between the coating and the welding magnetic capsules 1 can be ensured, the strength of the coating is enhanced, in addition, the magnetic field of the welding magnetic capsules 1 can cover the whole coating, and the whole range has the effect of preventing stripping.
Referring to fig. 3, the reinforcing scale 2 in step S4 includes an outer graphite layer 21 and an inner ferromagnetic layer 22 that are symmetrically connected, the thickness of the reinforcing scale 2 gradually decreases from the middle to the edge, the outer graphite layer 21 plays a role in enhancing the strength of the coating, the inner ferromagnetic layer 22 is used for responding to the magnetic attraction effect of the welded magnetic capsule 1 to play a role in preventing peeling, the thickness of the reinforcing scale 2 is thick in the middle and thin at the edge, because the reinforcing scales 2 are spliced and distributed, it can be ensured that the thickness of the reinforcing scale 2 in the coating is relatively uniform, the coating is more reasonably distributed, the strength can be improved, and excellent rust-proof performance can be ensured.
Twice the width of the reinforcing scale 2 in the step S4 is greater than the maximum distance between the adjacent pair of welding magnetic capsules 1, and the thickness of the reinforcing scale 2 is less than the thickness of the coating, so that the reinforcing scale 2 is in a splicing state when being attached, the mechanical strength of the coating is obviously improved, the impermeability of the coating is improved, and the peeling phenomenon is not easy to occur.
Example 2:
the difference from example 1 is that:
referring to fig. 3, one end of the inner ferromagnetic layer 22, which is far from the outer graphite layer 21, is connected with a plurality of self-breaking rods 3 which are uniformly distributed, one end of the self-breaking rods 3, which is far from the inner ferromagnetic layer 22, is connected with magnetic expansion balls 4, the self-breaking rods 3 play a role in connecting the magnetic expansion balls 4 with the reinforcing scale 2, the magnetic expansion balls 4 sink into the outer capsule 12 under the magnetic attraction effect of the bottom magnetic sheet 11, and the outer capsule 12 is fixed after being cured, so that the anti-stripping performance of the reinforcing scale 2 can be further improved.
Referring to fig. 4, the self-breaking rod 3 includes an external connection end 31, a frangible end 32 and an internal connection end 33, the frangible end 32 is connected between the external connection end 31 and the internal connection end 33, the external connection end 31 is connected with the internal ferromagnetic layer 22, and the internal connection end 33 is connected with the magnetic expansion ball 4, so that when the reinforcing scale 2 is still accidentally peeled off, the frangible end 32 is broken first, and the external connection end 31 and the internal connection end 33 are separated and simultaneously opened with the outside, and thus the reinforcing scale and the reinforcing scale are respectively unfolded.
The outer end 31 and the inner end 33 are both made of hard materials and are made into hollow tubular structures, the breakable end 32 is made of brittle materials and is made into hollow tubular structures, the outer end 31 is filled with self-heating materials, the inner end 33 is filled with hot melt materials, the self-heating materials in the outer end 31 can immediately generate oxidation reaction with oxygen in the air after leakage, oxidation protection of steel structures is achieved, meanwhile, heat can be generated to heat the inner end 33, the hot melt materials are forced to melt, then the hot melt materials are extruded under the action of thermal expansion of the magnetic expansion ball 4, covering isolation is formed in a peeling area, the external environment is temporarily isolated, and technicians are prompted to repair the hollow tubular structures in time.
Referring to fig. 5, the magnetic expansion ball 4 includes a heat conductive spherical shell 41, an elastic extrusion film 42 and a thermal expansion gas 43, the thermal expansion gas 43 may be hydrogen, a gap is formed at an end of the heat conductive spherical shell 41 close to the self-breaking rod 3, the elastic extrusion film 42 covers the gap, the thermal expansion gas 43 is filled between the elastic extrusion film 42 and the heat conductive spherical shell 41, the thermal expansion gas 43 in the heat conductive spherical shell 41 expands after being heated, and then the thermal expansion gas extrudes the hot melt material in the interconnection end 33 through the elastic extrusion film 42, thereby achieving temporary repair.
The rest of the process was the same as example 1, but the process of this example had temporary repair and indication after exfoliation and the cost was increased as compared with example 1.
The invention can be realized by uniformly welding a plurality of welding magnetic capsules 1 on the surface of the steel structure before coating the antirust coating, then coating the antirust coating, attaching a plurality of reinforcing scales 2 on the antirust coating, adsorbing the reinforcing scales 2 by means of the magnetic attraction effect of the welding magnetic capsule 1, realizing splicing and covering of the welding magnetic capsule 1 by the autonomous migration of the reinforcing scales 2, improving the strength of the coating after molding, improving the impermeability of the coating, and the coating is not easy to peel off due to the magnetic attraction between the welding magnetic capsule 1 and the reinforcing scale 2, even if the phenomenon of peeling off appears, under the magnetic attraction effect of welding magnetic capsule 1, the partial probability of peeling off also can reset and form interim rust-resistant, wins valuable time for the coating is restoreed, avoids the steel construction direct exposure in external environment, is showing the rust-resistant performance who improves the steel construction and prolongs its life.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. A novel anti-stripping rust-proof process for a steel structure is characterized in that: the method comprises the following steps:
s1, performing surface treatment on the steel structure to remove rust, oxide skin and old paint film attachments which are not firmly attached on the surface of the steel structure;
s2, uniformly welding the welding magnetic capsules (1) to the surface of a steel structure, cleaning welding slag, and preparing an antirust coating for later use;
s3, coating the antirust paint on the surface of the steel structure, completely covering the welding magnetic capsule (1), and keeping the thickness of the paint uniform;
s4, a plurality of reinforcing scales (2) are attached to the antirust coating, and then the reinforcing scales are automatically moved to splice and cover the welding magnetic capsule (1);
s5, heating and curing the antirust paint at the heating temperature of 40-60 ℃, and finishing the surface after finishing.
2. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 1, wherein: weld magnetism bag (1) in step S2 and include end magnetic sheet (11), outer bag membrane (12) and a plurality of solder joint (13), outer bag membrane (12) are connected in the one end of end magnetic sheet (11), and outer bag membrane (12) intussuseption is filled with the thermosetting material, solder joint (13) evenly set up in end magnetic sheet (11) edge.
3. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 1, wherein: the antirust coating in the step S2 is composed of a component A and a component B according to the mass ratio of 3-4:1, wherein the component A is composed of the following components in parts by weight: 20-50 parts of epoxy resin, 1-10 parts of epoxy diluent, 6-20 parts of cosolvent, 5-15 parts of zinc powder, 0.8-1 part of organic bentonite, 0.1-2 parts of dispersant and 0.1-2 parts of defoamer; the component B comprises the following components in parts by weight: 20-70 parts of curing agent, 30-50 parts of deionized water and 0.5-2 parts of wetting agent.
4. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 1, wherein: the ratio of the thickness of the coating to the thickness of the magnetic welding capsules (1) in the step S3 is 2-3:1, and the ratio of the distance between adjacent magnetic welding capsules (1) to the width of the magnetic welding capsules (1) is 0.5-0.8: 1.
5. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 1, wherein: the reinforcing scale (2) in the step S4 comprises an outer graphite layer (21) and an inner ferromagnetic layer (22) which are symmetrically connected, and the thickness of the reinforcing scale (2) is gradually reduced from the middle to the edge.
6. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 5, wherein: the interior ferromagnetic layer (22) are kept away from outer graphite layer (21) one end and are connected with a plurality of evenly distributed from disconnected pole (3), keep away from interior ferromagnetic layer (22) one end from disconnected pole (3) and be connected with magnetic expansion ball (4).
7. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 6, wherein: the self-breaking rod (3) comprises an outer connecting end (31), an easy-breaking end (32) and an inner connecting end (33), the easy-breaking end (32) is connected between the outer connecting end (31) and the inner connecting end (33), the outer connecting end (31) is connected with the inner ferromagnetic layer (22), and the inner connecting end (33) is connected with the magnetic expansion ball (4).
8. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 7, wherein: the outer connecting end (31) and the inner connecting end (33) are both made of hard materials and are of hollow tubular structures, the breakable end (32) is made of fragile materials and is of a hollow tubular structure, self-heating materials are filled in the outer connecting end (31), and hot-melt materials are filled in the inner connecting end (33).
9. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 6, wherein: magnetic expansion ball (4) are including heat conduction spherical shell (41), elasticity squeeze film (42) and thermal expansion gas (43), heat conduction spherical shell (41) are close to and are seted up jaggedly from disconnected pole (3) one end, elasticity squeeze film (42) cover in breach department, thermal expansion gas (43) are filled between elasticity squeeze film (42) and heat conduction spherical shell (41).
10. The novel anti-stripping rust-proof process for the steel structure as claimed in claim 1, wherein: twice the width of the reinforcing scale (2) in the step S4 is larger than the maximum distance between the adjacent pair of the welding magnetic capsules (1), and the thickness of the reinforcing scale (2) is smaller than the thickness of the coating.
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| CN112962820A (en) * | 2021-04-16 | 2021-06-15 | 廖英旭 | Prefabricated wall body of prefabricated building |
| CN115138525A (en) * | 2022-07-14 | 2022-10-04 | 广西天正钢结构有限公司 | Steel structure surface breakpoint-free painting process |
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