What kind of paint is used for outdoor billboard iron sheets?

For high-rise billboards, it is not easy to achieve outdoor conditions that are time-consuming, economical, and easy to construct.
Epoxy zinc-rich primer can be used for a long time, but it is not very economical. The construction requires metal surface pre treatment. The useful life is about four years.
Iron red alkyd anti-rust paint is satisfying, economical and easy to apply. It also has another advantage: it is not afraid of sunlight. But it will take more than two years at most before the color changes.
The following is the first coat of primer, and the second coat of the same type of topcoat. Please make your own decision based on the facts.
[Epoxy zinc-rich primer]
The main varieties of electrochemical anti-rust paint are epoxy zinc-rich primer and aluminum powder anti-rust paint. Currently, the most commonly used is epoxy zinc-rich primer. Zinc primer. Zinc is the anode and iron is the cathode. Epoxy zinc-rich primer uses a binder to adhere a large amount of zinc powder to the steel surface to form a conductive protective coating.
The anti-rust effect of electrochemical protective coatings is excellent. In harsh environments, it can maintain its anti-rust ability for a long time even without topcoat. However, its cost is high and the construction requirements are strict, such as environmental protection. Oxygen-rich zinc primer has strict requirements for the treatment of metal surfaces. The pre sence of oil stains, rust and impurities not only affects the adhesion of the coating, but also hinders the effective contact between the coating and the metal. However, considering the long recoating interval and construction cost, it is economically reasonable.
[Iron red alkyd anti-rust paint]
It is pre pared by adding iron red, lead chromium yellow and other pigments to alkyd paint, fillers, solvents and driers. Adhesion It has strong anti-rust ability, high hardness, elasticity, and strong impact and nitro resistance. This kind of anti-rust paint is most suitable for the primer of exterior paint in our iron printing and canning industry. It is not only suitable for general exterior coating It is suitable for priming paints, and is also suitable for priming nitrocellulose paint and amino baking paint, especially after baking, the performance is better.
Answer from the help team, hope to help.

The materials of billboards are generally made of: square tubes, angle steel, etc., which are welded. There can be three-dimensional boards, light cloth, blister, car paint, gusset boards, aluminum-plastic panels, etc. It would be better to use angle steel for such a large piece. When embedded parts should be used between the billboard steel structure and the concrete structure, friction expansion bolts are strictly prohibited for anchoring. When special embedded parts are installed unconditionally, other reliable connection measures should be taken, but they must be verified through force calculation and testing to ensure safety. For billboard steel structures attached to floors and walls, when bolts or welds are used to connect to the original house structure, the connecting bolts or welds should be calculated based on the overall overturning resistance of the structure. The calculated stress of the bolts or welds does not Should be greater than the design value of bearing capacity.

The connecting parts between billboards and walls. Wall billboards should be attached to the wall of a house or structure. It should be determined or verified that the wall of the house or structure can reliably withstand the force transmitted by the billboard, and Have necessary safety reserves. The connecting parts of wall billboards can be connected to the embedded parts in the columns or beams of the wall by welding, bolts or anchors. They can also be connected by qualified chemical anchors and planting bars. Friction-type expansion anchors are strictly prohibited. For the wall of an outdoor building, if you are considering using it for one or two years, you can use 3X3 angle steel as the main material. If you are considering using it for three to five years or even longer, use 4X4 angle steel, and add 0.4mm to the finished grid. galvanized sheet (windproof), and then install the picture, there are many auxiliary materials, such as No. 10 round steel, stainless steel edge strips, paint, rivets and welding rods, etc. This kind of steel frame must be maintained regularly after it is completed. The maintenance period depends on the degree of damage. It is usually no more than once a year. In cities with a lot of rain or even acid rain, it should not be more than half a year. The service life of the steel frame will be extended under normal maintenance. A poorly maintained steel frame may not last 5 years if larger materials are used. If you want an accurate budget, it's best to send photos, as the installation difficulty may vary. We make steel frames like this all year round.

The production of steel structure billboards requires
very skilled advertising production technology. Steel structure billboards are one of the forms of large-scale outdoor advertising and are also the most important form of resources for large-scale outdoor advertising. , with a wide range and no obstacles, it can be used for outdoor advertising display very clearly. In the production of steel structure billboards, you still need to pay attention to its daily maintenance:
The following should be paid attention to in the daily maintenance of steel structure billboards. Point:
Strict material selection: When selecting steel, the chemical composition and mechanical properties of the steel used in the steel structure should be tested, and the appearance of the steel should be inspected, and materials with defects such as cracks, rust spots, and scars should be discarded.
Construction with caution: During the construction process of billboards, damage to the appearance of the steel used should be avoided, and drilling and welding of key stress-bearing parts are prohibited.
Regular testing. After the billboard is put into use, its safety should be checked regularly, and damaged and aging components should be discovered and replaced in a timely manner. If the main components are seriously aged or damaged, reinforcement measures should be considered.
Pay attention to anti-corrosion: The most commonly used anti-corrosion measures for steel include: painting the surface of the steel, or spraying a metal protective layer on the surface of the component; contact between different metals can also cause corrosion. If different metal materials are used in the construction, < br/>Toilet advertising frame
, its contact surface should be insulated; in addition, when designing, attention should also be paid to the placement of materials to avoid water accumulation caused by the grooves of the steel facing upward, causing material corrosion.
There are many methods to strengthen steel structures. In summary, the main ones are as follows:
Increase the stress section. This method is widely used to reinforce billboard supports and node steel plates. It can improve the bearing capacity of the components, but it will also increase the weight and cost of the billboard itself, which has limitations in use.
Additional pre stressed tie rods or braces: This method can improve the bearing capacity of the component and increase its crack resistance. Add tie rods to the new wall, use expansion bolts to fix the embedded parts, and weld the tie bars (steel bars with a thread of 16 or more must be used).
Adding fulcrums or brackets: This method can reduce the bearing span of the component, reduce the stress load inside the steel structure, and slow down the aging and deformation of the material.
Additional fulcrums: The stability and safety factor of the overall structure of the billboard can be enhanced by increasing the base plate of the support and the number of chemical expansion bolts or planting steel bars. Add structural columns to the old wall and reserve embedded parts. The tie bars must be tied with steel bars with a thread of 16 or more.
Adhesive reinforcement method: This is a reinforcement method that sticks steel plates to the outside of the component. It has the advantages of easy operation, short construction period, small space occupation, and almost no change in component appearance. Usually used for load-bearing reinforcement of building billboard supports.
The above is an introduction to the pre cautions for the production and maintenance of steel structure billboards. I hope the above introduction will help you in outdoor advertising production. If you want to know more information about advertising production, please log in