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CN116037426A - Corrosion prevention technology for steel structure - Google Patents

Corrosion prevention technology for steel structure Download PDF

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Publication number
CN116037426A
CN116037426A CN202310083153.6A CN202310083153A CN116037426A CN 116037426 A CN116037426 A CN 116037426A CN 202310083153 A CN202310083153 A CN 202310083153A CN 116037426 A CN116037426 A CN 116037426A
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CN
China
Prior art keywords
steel structure
paint
plate
fixedly connected
spraying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310083153.6A
Other languages
Chinese (zh)
Inventor
黎德荣
黎德友
许德文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yunnan Guoding Steel Structure Co ltd
Original Assignee
Yunnan Guoding Steel Structure Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yunnan Guoding Steel Structure Co ltd filed Critical Yunnan Guoding Steel Structure Co ltd
Priority to CN202310083153.6A priority Critical patent/CN116037426A/en
Publication of CN116037426A publication Critical patent/CN116037426A/en
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • 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
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • 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
    • B05D3/002—Pretreatement
    • 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
    • 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
    • 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
    • B05D7/54—No clear coat specified
    • B05D7/546—No clear coat specified each layer being cured, at least partially, separately
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/129—Flame spraying
    • 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
    • B05D2503/00—Polyurethanes
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Nozzles (AREA)

Abstract

The invention discloses a steel structure corrosion prevention process, which relates to the technical field of corrosion prevention processes and comprises the following steps: step one: a preparation stage; step two: surface treatment; step three: zinc spraying treatment; step four: spraying primer; step five: and (5) quality detection. When the steel structure is subjected to corrosion prevention treatment, the weld flash, splash, pinholes, flash, burr, slag and the like existing on the surface of the steel structure are treated, so that the possibility of damage of paint after paint spraying is reduced, the service life of paint spraying is prolonged, meanwhile, zinc plating is performed on the surface of the steel structure in a flame zinc spraying manner, a compact zinc carbonate protective film can be formed on the surface in a wet environment, steel can be effectively protected, and then the galvanized layer is subjected to sealing treatment, so that the brightness and blackness of the film layer can be effectively improved, and the corrosion resistance of the film layer is improved.

Description

Corrosion prevention technology for steel structure
Technical Field
The invention relates to the technical field of corrosion prevention processes, in particular to a steel structure corrosion prevention process.
Background
The steel structure is a structure formed by steel materials, is one of main building structure types, and is widely applied to the fields of high-rise structures, large-span structures, industrial plants and the like because the steel structure has the advantages of good plastic toughness, high strength, good earthquake resistance, short construction period, convenient manufacture and the like.
The following problems exist in the prior art:
the steel structure exposed in the field environment is easy to rust by chemical and electrochemical actions with the surrounding environment, so that an anti-corrosion layer needs to be coated on the surface of the steel structure to protect the steel structure body from being corroded, but when the anti-corrosion coating on the surface of the steel structure is poor in performance and damaged, the steel structure body is exposed to the outside to generate corrosion, and when the anti-corrosion coating is sprayed by a spray gun, the connection effect of a pipeline for conveying the spray paint is poor, the spray paint is easy to overflow, and the pipeline for conveying the spray paint is lack of positioning, so that the spray gun is inconvenient in use and is unfavorable for spraying the spray paint.
Disclosure of Invention
The invention provides a steel structure corrosion prevention process for solving the problems in the background art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the steel structure corrosion prevention process comprises the following steps:
step one: a preparation stage;
step two: surface treatment;
step three: zinc spraying treatment;
step four: spraying primer;
step five: and (5) quality detection.
The technical scheme of the invention is further improved as follows: the preparation stage needs to prepare equipment such as a polishing machine, a sand blasting machine, an SPQ-1 type air spray gun, a pneumatic paint spray gun and the like which are needed in the process of investigation on construction environment and engineering scale.
The technical scheme of the invention is further improved as follows: the second step further comprises the following steps:
a1: polishing the weld flash, splash, pinholes, flash, abrupt burrs, welding slag and the like existing on the surface of the steel structure through a polishing machine, and cleaning oil dirt and grease existing on the surface of the steel structure;
a2: and then removing rust, oxide skin and attached old paint on the surface of the steel structure by a sand blasting machine, so that the surface of the steel structure achieves the effects of no rust, no dirt, no oxide skin, no oil dirt grease, no dust and other pollution.
The technical scheme of the invention is further improved as follows: the third step comprises the following steps:
b1: putting zinc wires into an SPQ-1 type air spray gun from a rear guide pipe by adopting the SPQ-1 type air spray gun, and taking oxygen and flame as molten flame, wherein the diameter of the zinc wires is 3 mm;
b2: the compressed air after oil removal and water removal filtration is used as power to push the zinc wire to advance, and the molten part forms a mist to spray on the surface of the structure to form a coating, the spraying distance is controlled between 100 mm and 120mm, and the next spraying can be carried out when each layer is sprayed for 20 minutes to 30 minutes.
The technical scheme of the invention is further improved as follows: the fourth step comprises the following steps:
c1: in order to effectively protect the spray coating, after the zinc spraying is finished, the spraying of the epoxy coating is required to be carried out through a pneumatic paint spray gun, so that the sealing treatment of the coating is carried out, and the thickness of the spraying is 30-40 mu m;
c2: after the sprayed epoxy paint is cured, the elastic polyurethane is sprayed as the finish paint after the paint is ensured to be dry, free of paint leakage, sagging, bubbling and pollution impurities, and the finish paint is dried and solidified.
The technical scheme of the invention is further improved as follows: the pneumatic paint spray gun comprises a spray pipe, a handle is fixedly connected with the bottom of the right end of the spray pipe, a gas pipe is fixedly arranged at the bottom end of the handle, a connecting joint is arranged at the bottom of the left end of the spray pipe, a paint conveying pipe is fixedly arranged at the bottom end of the connecting joint, and a limiting mechanism is arranged at the left side of the bottom end of the handle.
The technical scheme of the invention is further improved as follows: the connecting joint comprises a connector, the bottom at the spray tube is fixedly connected to the connector, the bottom side of connector is provided with the grafting cap, the one end fixed connection of grafting cap and defeated lacquer pipe, the inboard fixedly connected with of grafting cap is sealed to be filled up, the side swing joint of grafting cap has the rotation ring gear, the inboard meshing of rotation ring gear is connected with the drive wheel, drive wheel swing joint is in the inside of grafting cap, the top fixedly connected with first screw rod of drive wheel, the side threaded connection of first screw rod has the screw slide, the middle part sliding connection of screw slide has the slip cardboard, the one end of slip cardboard extends to the side of connector, the left side of screw slide is provided with the drive wheel, the side meshing of drive wheel is connected with the pinion, pinion fixedly connected with is in the inside of grafting cap, the right side fixedly connected with second screw rod of drive wheel, the second screw rod extends to the inside of slip cardboard.
The technical scheme of the invention is further improved as follows: the limiting mechanism comprises a limiting ring, the limiting ring is slidably connected to the right side of the handle, the right end of the limiting ring is movably connected with a pull plate, the pull plate is slidably connected to the inside of the handle, the inner side of the pull plate is fixedly connected with a jacking spring, the jacking spring is arranged in the handle, one end of the limiting ring is fixedly connected with a lapping plate, and the side face of the lapping plate is provided with a clamping mechanism.
The technical scheme of the invention is further improved as follows: the clamping mechanism comprises a button, the button sliding connection is at the both ends of spacing ring, the side fixedly connected with of button presses the pole, the side of pressing the pole is provided with reset spring, the right-hand member fixedly connected with sliding plate of pressing the pole, the bottom of sliding plate extends to the inside of arm-tie, the bottom side fixedly connected with fixture block of sliding plate, the middle part sliding connection of sliding plate has the slide bar, slide bar fixedly connected with is in the inside of overlap plate.
By adopting the technical scheme, compared with the prior art, the invention has the following technical progress:
1. the invention provides a steel structure corrosion prevention process, when a steel structure is subjected to corrosion prevention treatment, through treating weld flash, splashes, pinholes, flash, burr, welding slag and the like existing on the surface of the steel structure, the possibility of damage of paint after paint spraying is reduced, the service life of paint spraying is prolonged, meanwhile, zinc plating is carried out on the surface of the steel structure in a flame zinc spraying mode, a compact zinc carbonate protective film can be formed on the surface in a wet environment, steel can be effectively protected, and then a galvanized layer is subjected to sealing treatment, so that the brightness and blackness of the film layer can be effectively improved, and the corrosion resistance of the film layer is improved.
2. The invention provides a steel structure corrosion prevention process, which is characterized in that a connector, an inserting cap, a sealing gasket, a rotating toothed ring, a driving wheel, a first screw rod, a threaded sliding plate, a sliding clamping plate, a driving wheel, a toothed plate and a second screw rod are mutually matched, the inserting cap is sleeved on the connector, the driving wheel can be rotated by rotating the rotating toothed ring, the first screw rod can be driven to rotate, the threaded sliding plate can drive the sliding clamping plate to move, meanwhile, the driving wheel can be driven to move by the movement of the threaded sliding plate, the driving wheel can be driven to rotate by meshing with the toothed plate, the second screw rod can be driven to rotate, the sliding clamping plate can extend out, the connector can be compressed, a paint conveying pipe can be fixed, the sealing gasket can be extruded, the fixing effect is better, and the spray gun is convenient to use.
3. The invention provides a steel structure corrosion prevention process, which is characterized in that a limiting ring, a pull plate, a tightening spring, a lapping plate, a button, a pressing rod, a reset spring, a sliding plate, a clamping block and a sliding rod are mutually matched, a paint conveying pipe passes through the limiting ring and rotates to the right end of the pull plate, the sliding plate and the clamping block are clamped into the side surface of the pull plate, and the pull plate and the limiting ring are tightened against the inside of a handle through the tightening spring, so that the limiting ring can be fixed, the paint conveying pipe can be limited, and the use of a spray gun is more convenient.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic view of the pneumatic spray gun of the present invention;
FIG. 3 is a schematic cross-sectional view of a connector according to the present invention;
FIG. 4 is an enlarged schematic view of the threaded skateboard of the present invention;
FIG. 5 is a schematic cross-sectional view of a spacing mechanism according to the present invention;
fig. 6 is a schematic cross-sectional view of the clamping mechanism of the present invention.
In the figure: 1. a spray pipe; 2. a handle; 3. a gas pipe; 4. a connection joint; 41. a connector; 42. a plug cap; 43. a sealing gasket; 44. rotating the toothed ring; 45. a driving wheel; 46. a first screw; 47. a threaded slide plate; 48. a sliding clamping plate; 49. a driving wheel; 410. a toothed plate; 411. a second screw; 5. a paint conveying pipe; 6. a limiting mechanism; 61. a limiting ring; 62. pulling a plate; 63. a spring is tightly propped; 64. a lapping plate; 65. a clamping mechanism; 651. a button; 652. pressing a pressing rod; 653. a return spring; 654. a sliding plate; 655. a clamping block; 656. a sliding rod.
Detailed Description
The invention is further illustrated by the following examples:
example 1
As shown in fig. 1 to 6, the present invention provides a steel structure corrosion prevention process, which comprises the steps of:
step one: a preparation stage;
step two: surface treatment;
step three: zinc spraying treatment;
step four: spraying primer;
step five: and (5) quality detection.
The preparation stage needs to prepare equipment such as a polishing machine, a sand blasting machine, an SPQ-1 type air spray gun, a pneumatic paint spray gun and the like which are needed in the process of investigation on construction environment and engineering scale.
The second step also comprises the following steps:
a1: polishing the weld flash, splash, pinholes, flash, abrupt burrs, welding slag and the like existing on the surface of the steel structure through a polishing machine, and cleaning oil dirt and grease existing on the surface of the steel structure;
a2: and then removing rust, oxide skin and attached old paint on the surface of the steel structure by a sand blasting machine, so that the surface of the steel structure achieves the effects of no rust, no dirt, no oxide skin, no oil dirt grease, no dust and other pollution.
The third step comprises the following steps:
b1: putting zinc wires into an SPQ-1 type air spray gun from a rear guide pipe by adopting the SPQ-1 type air spray gun, and taking oxygen and flame as molten flame, wherein the diameter of the zinc wires is 3 mm;
b2: the compressed air after oil removal and water removal filtration is used as power to push the zinc wire to advance, and the molten part forms a mist to spray on the surface of the structure to form a coating, the spraying distance is controlled between 100 mm and 120mm, and the next spraying can be carried out when each layer is sprayed for 20 minutes to 30 minutes.
Step four comprises the following steps:
c1: in order to effectively protect the spray coating, after the zinc spraying is finished, the spraying of the epoxy coating is required to be carried out through a pneumatic paint spray gun, so that the sealing treatment of the coating is carried out, and the thickness of the spraying is 30-40 mu m;
c2: after the sprayed epoxy paint is cured, the elastic polyurethane is sprayed as the finish paint after the paint is ensured to be dry, free of paint leakage, sagging, bubbling and pollution impurities, and the finish paint is dried and solidified.
In this embodiment, when carrying out anticorrosive treatment to the steel structure, through handling the weld flash, splash, pinhole, flash and burr that exist on steel structure surface are abrupt, welding slag etc. reduced the possibility that the paint after spraying paint appears damaged, improved the life of spraying paint, zinc plating is carried out on steel structure's surface through the mode of flame zinc spraying simultaneously, can then form the compact zinc carbonate protection film on the surface in moist environment, can play effectual protection to steel, later seal the processing for the galvanized coating, can effectively improve the luminance and the blackness of rete to improve the corrosion resistance of rete.
Example 2
As shown in fig. 1-6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the pneumatic paint spray gun comprises a spray pipe 1, a handle 2 fixedly connected with the bottom of the right end of the spray pipe 1, a gas pipe 3 fixedly mounted at the bottom of the handle 2, a connecting joint 4 arranged at the bottom of the left end of the spray pipe 1, a paint conveying pipe 5 fixedly mounted at the bottom of the connecting joint 4, and a limiting mechanism 6 arranged at the left side of the bottom of the handle 2.
In this embodiment, when spraying that sprays paint, spray tube 1 can be connected with lacquer pipe 5 through attach fitting 4 to can carry out spacingly to lacquer pipe 5 through stop gear 6, later with gas-supply pipe 3 fixed mounting on handle 2, made things convenient for carrying compressed air, later push the button of handle 2, thereby can spray paint the spraying.
Example 3
As shown in fig. 1-6, on the basis of embodiment 2, the present invention provides a technical solution: preferably, the connecting joint 4 comprises a connecting head 41, the connecting head 41 is fixedly connected to the bottom of the spray pipe 1, an inserting cap 42 is arranged on the side face of the bottom end of the connecting head 41, the inserting cap 42 is fixedly connected with one end of the paint conveying pipe 5, a sealing pad 43 is fixedly connected to the inner side of the inserting cap 42, a rotating toothed ring 44 is movably connected to the side face of the inserting cap 42, a driving wheel 45 is connected to the inner side of the rotating toothed ring 44 in a meshed mode, the driving wheel 45 is movably connected to the inside of the inserting cap 42, a first screw 46 is fixedly connected to the top of the driving wheel 45, a threaded sliding plate 47 is connected to the side face of the first screw 46 in a threaded mode, a sliding clamping plate 48 is connected to the middle portion of the threaded sliding plate 47 in a sliding mode, one end of the sliding clamping plate 48 extends to the side face of the connecting head 41, a driving wheel 49 is arranged on the left side of the threaded sliding plate 47, a toothed plate 410 is connected to the side face of the driving wheel 49 in a meshed mode, the toothed plate 410 is fixedly connected to the inside of the inserting cap 42, a second screw 411 is fixedly connected to the right side of the driving wheel 49, and the second screw 411 extends to the inside the sliding clamping plate 48.
In this embodiment, when the spray gun is used, the plug cap 42 is sleeved on the connector 41, by rotating the rotating toothed ring 44, the driving wheel 45 can rotate and the first screw 46 can be driven to rotate, so that the threaded sliding plate 47 can drive the sliding clamping plate 48 to move, meanwhile, the threaded sliding plate 47 can also drive the driving wheel 49 to move, and through the engagement with the toothed plate 410, the driving wheel 49 can rotate and the second screw 411 can be driven to rotate, so that the sliding clamping plate 48 can extend out, the connector 41 can be pressed, the paint conveying pipe 5 can be fixed, and the sealing gasket 43 can be extruded, so that the fixing effect is better, and the spray gun is convenient to use.
Example 4
As shown in fig. 1-6, on the basis of embodiment 2, the present invention provides a technical solution: preferably, the stop gear 6 includes the stop collar 61, the right side at handle 2 is slided to stop collar 61, the right-hand member swing joint of stop collar 61 has arm-tie 62, arm-tie 62 sliding connection is in the inside of handle 2, the inboard fixedly connected with tight spring 63 of top of arm-tie 62, tight spring 63 sets up in the inside of handle 2, one end fixedly connected with lapping plate 64 of stop collar 61, the side of lapping plate 64 is provided with joint mechanism 65, joint mechanism 65 includes button 651, button 651 sliding connection is at the both ends of stop collar 61, the side fixedly connected with push rod 652 of button 651, the side of push rod 652 is provided with reset spring 653, the right-hand member fixedly connected with slide plate 654 of push rod 652, the bottom of slide plate 654 extends to the inside of arm-tie 62, the bottom side fixedly connected with fixture block 655 of slide plate 654, the middle part sliding connection of slide plate 656, slide rod 656 fixedly connected with is in the inside of lapping plate 64.
In this embodiment, the paint pipe 5 passes through the spacing ring 61, and the spacing ring 61 is rotated to the right end of the pull plate 62, so that the lapping plate 64 is lapped on the pull plate 62, the sliding plate 654 and the clamping block 655 are clamped into the side surface of the pull plate 62, and the pull plate 62 and the spacing ring 61 are tightly propped against the inside of the handle by the propping spring 63, so that the spacing ring 61 can be fixed, the paint pipe 5 can be limited, the use of the spray gun is more convenient, after the use is finished, the spacing ring 61 is pulled out and the push button 651 and the reset spring 653 are extruded, so that the sliding plate 654 can be propped along the sliding rod 656 by the pressing rod 652, so that the pull plate 62 loses the limit of the clamping block 655, the spacing ring 61 can be opened, and the paint pipe 5 is conveniently taken out.
The foregoing invention has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims (9)

1. The steel structure corrosion prevention process is characterized by comprising the following steps of: the steel structure corrosion prevention process comprises the following steps:
step one: a preparation stage;
step two: surface treatment;
step three: zinc spraying treatment;
step four: spraying primer;
step five: and (5) quality detection.
2. The steel structure corrosion prevention process according to claim 1, wherein: the preparation stage needs to prepare equipment such as a polishing machine, a sand blasting machine, an SPQ-1 type air spray gun, a pneumatic paint spray gun and the like which are needed in the process of investigation on construction environment and engineering scale.
3. The steel structure corrosion prevention process according to claim 1, wherein: the second step further comprises the following steps:
a1: polishing the weld flash, splash, pinholes, flash, abrupt burrs, welding slag and the like existing on the surface of the steel structure through a polishing machine, and cleaning oil dirt and grease existing on the surface of the steel structure;
a2: and then removing rust, oxide skin and attached old paint on the surface of the steel structure by a sand blasting machine, so that the surface of the steel structure achieves the effects of no rust, no dirt, no oxide skin, no oil dirt grease, no dust and other pollution.
4. The steel structure corrosion prevention process according to claim 1, wherein: the third step comprises the following steps:
b1: putting zinc wires into an SPQ-1 type air spray gun from a rear guide pipe by adopting the SPQ-1 type air spray gun, and taking oxygen and flame as molten flame, wherein the diameter of the zinc wires is 3 mm;
b2: the compressed air after oil removal and water removal filtration is used as power to push the zinc wire to advance, and the molten part forms a mist to spray on the surface of the structure to form a coating, the spraying distance is controlled between 100 mm and 120mm, and the next spraying can be carried out when each layer is sprayed for 20 minutes to 30 minutes.
5. The steel structure corrosion prevention process according to claim 1, wherein: the fourth step comprises the following steps:
c1: in order to effectively protect the spray coating, after the zinc spraying is finished, the spraying of the epoxy coating is required to be carried out through a pneumatic paint spray gun, so that the sealing treatment of the coating is carried out, and the thickness of the spraying is 30-40 mu m;
c2: after the sprayed epoxy paint is cured, the elastic polyurethane is sprayed as the finish paint after the paint is ensured to be dry, free of paint leakage, sagging, bubbling and pollution impurities, and the finish paint is dried and solidified.
6. A steel structure corrosion protection process according to claim 2, characterized in that: the pneumatic paint spray gun comprises a spray pipe (1), a handle (2) is fixedly connected with the bottom of the right end of the spray pipe (1), a gas pipe (3) is fixedly installed at the bottom end of the handle (2), a connecting joint (4) is arranged at the bottom of the left end of the spray pipe (1), a paint conveying pipe (5) is fixedly installed at the bottom end of the connecting joint (4), and a limiting mechanism (6) is arranged at the left side of the bottom end of the handle (2).
7. The steel structure corrosion prevention process according to claim 6, wherein: the connecting joint (4) comprises a connecting joint (41), the connecting joint (41) is fixedly connected to the bottom of a spray pipe (1), a plug cap (42) is arranged on the side surface of the bottom end of the connecting joint (41), the plug cap (42) is fixedly connected with one end of a paint delivery pipe (5), a sealing gasket (43) is fixedly connected to the inner side of the plug cap (42), a rotary toothed ring (44) is movably connected to the side surface of the plug cap (42), a driving wheel (45) is connected to the inner side of the rotary toothed ring (44) in a meshed manner, the driving wheel (45) is movably connected to the inside of the plug cap (42), a first screw (46) is fixedly connected to the top of the driving wheel (45), a threaded slide plate (47) is connected to the side surface of the first screw (46), a sliding clamping plate (48) is connected to the middle part of the threaded slide clamping plate (47) in a sliding manner, one end of the sliding clamping plate (48) extends to the side surface of the connecting joint (41), a driving wheel (49) is arranged on the left side surface of the threaded slide plate (47), a toothed plate (49) is connected to the toothed plate (410) in a meshed manner, the toothed plate (410) is connected to the inside of the second screw (410) in a meshed manner, the second screw (411) extends to the inside of the slide card (48).
8. The steel structure corrosion prevention process according to claim 6, wherein: stop gear (6) are including spacing ring (61), spacing ring (61) sliding connection is on the right side of handle (2), the right-hand member swing joint of spacing ring (61) has arm-tie (62), arm-tie (62) sliding connection is in the inside of handle (2), the inboard fixedly connected with tight spring (63) of top of arm-tie (62), tight spring (63) setting is in the inside of handle (2), the one end fixedly connected with overlap plate (64) of spacing ring (61), the side of overlap plate (64) is provided with joint mechanism (65).
9. The steel structure corrosion prevention process according to claim 8, wherein: the clamping mechanism (65) comprises a button (651), the button (651) is connected with the two ends of the limiting ring (61) in a sliding mode, a pressing rod (652) is fixedly connected with the side face of the button (651), a reset spring (653) is arranged on the side face of the pressing rod (652), a sliding plate (654) is fixedly connected with the right end of the pressing rod (652), the bottom end of the sliding plate (654) extends to the inside of the pulling plate (62), a clamping block (655) is fixedly connected with the side face of the bottom end of the sliding plate (654), a sliding rod (656) is connected with the middle portion of the sliding plate (654) in a sliding mode, and the sliding rod (656) is fixedly connected with the inside of the bridging plate (64).
CN202310083153.6A 2023-02-08 2023-02-08 Corrosion prevention technology for steel structure Pending CN116037426A (en)

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Cited By (1)

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CN116689265A (en) * 2023-05-10 2023-09-05 华能聊城热电有限公司 Anti-corrosion treatment method and treatment device for coal conveying belt bracket

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