How to spray galvanized iron, galvanized and anti rust effect of baking paint

Generally speaking, galvanized iron, galvanized pipes and other materials are difficult to repaint. Because it is difficult to provide adhesion to the subsequent paint.

At this time, it is necessary to use a special anti-corrosion primer for galvanized pipes, mainly by adding raw materials such as adhesion promoters.

13 duration essentials slip 0 bar 5, if necessary, chat in detail.

action="support">

Galvanized spraylacquer , this question is the most suitable for meAppropriate. Ten :88-θ2-7l l

Definition: Anti-dumping refers to the measures taken to resist the dumping of foreign goods in the domestic market.

Purpose of anti-misappropriation tax:

Impose additional duties so that dumped foreign goods cannot be cheap**. The aim is to resist the dumping of foreign goods.

serious harm caused by national production and markets.

Anti-dumping duties are import taxes that are collected from the consignee of the import in accordance with the law.

Foreign Law of the People's Republic of China.

Article 41 Products from other countries or regions enter China's market by dumping at a lower value than normal.

Causing or threatening to cause material injury to an established domestic industry, or to the establishment of a domestic industry.

If the industry causes a substantial obstruction, the State may take anti-dumping measures to eliminate or mitigate such injury or.

Threat or impediment of harm.

Each has its own benefits. Galvanizing is a positive coating, which can protect the base metal well, but the surface of the paint is cracked, directly corroding the base metal. It is recommended to bake paint with galvanized sheet, because baking paint with galvanized sheet is more durable than baking paint with iron plate.

Since the galvanized sheet has been galvanized on the surface, it has the effect of anti-rust and anti-corrosion, and then it is more durable if it is treated with paint.

The difference between galvanizing and baking paintGalvanizing refers to the surface treatment technology of coating a layer of zinc on the surface of metal, alloy or other materials to play a role in aesthetics and rust prevention. Zinc is easily soluble in acids and alkalis, so it is called an amphoteric metal. Zinc is almost unchanged in dry air.

In moist air, a basic zinc carbonate film is formed on the surface of zinc.

Baking paint, an emerging painting production method (process) in furniture manufacturing. The method is: on the substrate that has been polished to a certain degree of roughness (usually high-density board), three times of primer, four times of topcoat, each time of paint, are sent to a dust-free balanced temperature baking room, drying.

At present, this process has high requirements for paint and good color rendering.

Hello dear, galvanized iron sheet does not need to be brushed with anti-rust paint. 1. Galvanized iron sheet generally does not need to be brushed with anti-rust paint. After the iron sheet is galvanized, a layer of zinc white coating is covered on the surface of the iron sheet, which separates the iron sheet from the atmosphere, avoids the direct contact and corrosion of oxygen on the iron sheet, and protects the iron sheet.

Due to its strong chemical activity, a thin and dense layer of zinc carbonate forms in the air at room temperature to prevent further oxidation of zinc. Therefore, the galvanized iron sheet can effectively avoid rust whether it is galvanized on the surface or itself, so there is no need to brush anti-rust paint. 2. Only when the galvanized layer is damaged, the iron sheet is exposed to the air and loses the protection of the galvanized layer, so it is necessary to brush the anti-rust paint.

Summary. If you want to paint on a steel surface, you will generally need to treat the steel surface to ensure that the coating adheres and holds well. For galvanized angle irons, some special primers or surface treatments can be used to make the surface easier to spray.

Regarding the surface treatment of galvanized steel, the common methods are as follows:1Washing and degreasing:

Cleaning and degreasing on the surface of the steel to remove oil and dirt from the surface and make the steel surface cleaner. 2.Pickling treatment:

The surface of the steel is treated by pickling to remove impurities such as oxides and zinc salts, making the surface more suitable for adhesion coatings. 3.Choosing the Right Primer:

Choose the right primer to coat the steel surface and improve the adhesion and decorative effect of the surface.

If you want to paint a steel surface, you will generally need to treat the steel surface to ensure that the coating adheres and holds well. For galvanized angle iron, some special primers or surface treatment processes can be used to make the surface cracked and easier to spray. Regarding the surface treatment of galvanized steel, there are several common methods:

1.Cleaning and degreasing: Cleaning and degreasing on the surface of the steel to remove oil and dirt from the surface and make the steel surface cleaner.

2.Pickling treatment: The surface of the steel is treated by pickling to remove impurities such as oxides and zinc salts, making the surface more suitable for adhesion coatings.

3.Choose the right primer: Choose the right primer to coat the steel surface to improve the adhesion and decorative effect of the surface.

Can you add, I don't quite understand it.

It should be noted that because the galvanized steel surface has good anti-corrosion and oxidation resistance, if spraying, it is necessary to choose the appropriate primer and coating, and the treatment process before spraying is very critical, otherwise the quality and service life of the coating will be affected. Therefore, according to your specific situation, it is recommended that you choose a professional coating and surface treatment solution to ensure the spraying effect and reed erection durability.

Hello, the surface of the galvanized sheet is relatively smooth, and the ordinary oil mu mountain Zen paint is easy to fall off and separate because of the lack of viscosity! It is recommended to use epoxy zinc-attached paint for more durability. It has nothing to do with color!

The purpose of zinc paint is to be able to work well with. Before spraying paint, you can wipe the area to be painted with dilute hydrochloric acid, and then paint it. Because the galvanized sheet itself has good corrosion resistance, the finished material is either oiled or passivated or fingerprint-resistant before it goes off the production line, while it is painted with color paint.

The main reason is that the galvanized surface is very smooth, and the joint force between most of the paint and the substrate is not good, and the combination of dust is not firm, and it is easy to fall off the paint, even if. ED1000 epoxy primer is a special paint for galvanized sheet and galvanized iron sheet, which has a variety of characteristics: strong adhesion to galvanized sheet and galvanized steel structure, no falling off of the paint film, and can also be used for stainless steel, aluminum alloy, aluminum plate and other substrates.

If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress. Finally, I wish you good health and a good mood!

1. Clean up. First use clean water and a soft cloth to clean the scraped area to remove dust and impurities, and then use detergent to clean the scraping area and surrounding area.

2. Grinding. Take the prepared sandpaper, dip it in some water, sand the scratched parts, and try to smooth out the paint on the scraped parts. Pay special attention to if there is a burst of skin, to get rid of it, be sure to deal with it. Otherwise, it will peel again after spraying paint.

3. Leveling. If there is a high-lying and uneven phenomenon in the scraping part, it is necessary to level it with putty ash, and try to fill the recess as much as possible, wipe it evenly, and wipe it smooth, so as to facilitate painting and avoid affecting the effect.

4. Protection. In the parts that need to be painted, paste the paper around the Tong Hall and the like, and protect it, so as to avoid spraying to other places when painting. Also, it's best to wear gloves and masks to save your hands from getting dirty.

5. Spray paint. Before painting, do a test, which can be sprayed on other iron objects to see if there is any color difference. When painting, the nozzle should not be too close, and it is not required to be sprayed at one time, it can be completed in three or four times, and the paint sprayed on it should be slightly dry between each time, and it can be sprayed once every five or six minutes.

6. Trimming. After applying the paint, don't be in a hurry until the paint is dry, if you find that the junction between the repaired part and the original part is not very satisfied, you can use fine sandpaper dipped in water to carefully polish it to make it look more natural.

7. Waxing. Once everything is done, clean it again, and finally wax it and you're good to go. Of course, this is only limited to small scratches, and you are too lazy to repair it, if you want to give it a try.

Galvanized sheet is a little different from other steels, because it is coated with a thin layer of zinc, so the adhesion of general paint is not very good. Just use a special primer for galvanized parts! Yellow color, good adhesion after drying, and then make a variety of colors of topcoat on it.

How to paint galvanized iron plate:

Evenly sanded the galvanized sheet with dry sandpaper until the surface reaches the plume edge. The anti-corrosion material on the surface of the galvanized sheet shall not be penetrated, so as not to affect the anti-corrosion performance of the material itself.

Use a dust blow gun to blow off dust particles and other debris on the surface.

Spray or brush primer.

Wait for the primer to dry before spraying the topcoat.

Galvanized sheet refers to a steel sheet with a layer of zinc on its surface. Galvanizing is a cost-effective and cost-effective method of corrosion protection that is often used, and about half of the world's zinc production is used in this process. Major domestic production plants: Wuhan Iron and Steel, Anshan Iron and Steel, Baosteel Huangshi, Shougang, Pangang, Handan Iron and Steel, Masteel, etc.

When a steel workpiece is immersed in molten zinc, a solid melt of zinc and a iron (body-centered) is first formed at the interface. This is the base metal iron.

A crystal formed by dissolving zinc atoms in a solid state, the fusion between two metal atoms, and the gravitational ratio between the atoms.

Smaller. Therefore, when zinc reaches saturation in the solid melt, the two element atoms Zn-Fe diffuse each other and diffuse to.

or infiltration) The zinc atoms in the steel matrix migrate in the matrix lattice, gradually forming an alloy with the iron, and diffuse to melt.

The iron in the zinc liquid forms an intermetallic compound with zinc, and Feznl3 is "zinc slag".

Galvanized paint on the surface of the steel acts as a shield and cathodic protection. If the galvanized layer breaks to the surface of the steel, spray paint.

The anodizing effect will protect the steel. Minor damage to the zinc layer can self-seal because of zinc hydroxide and carbon during corrosion.

After acid zinc galvanization is generated, these paint products will adhere well to the surface and can also be supplied as they are insoluble.

Protection. If a strong acid or base comes into contact with zinc, it will corrode very quickly.

The galvanized anti-atmospheric corrosion painting mechanism includes mechanical protection and electrochemical protection, and the surface of the galvanized paint layer is galvanized under atmospheric corrosion conditions.

There are ZN, ZN(OH)2 and alkaline carbonate protective film, which slows down the corrosion of zinc to a certain extent, and this protective film (also known as "white rust").

If damaged, a new coating will be formed. When the zinc layer is severely damaged and endangers the steel matrix, the zinc produces electrochemistry on the matrix.

Protection, the standard potential of zinc is one, the standard potential of iron is one, zinc and iron form a "microbattery" when zinc acts as an anode.

is dissolved, and the iron is protected as a cathode. Obviously, hot-dip galvanizing is better than electro-galvanizing in resisting atmospheric corrosion of the base metal iron.