Aluminum products are used in various spheres of vital activity. Colored metals can be painted, but before this surfaces should be qualitatively prepared. That is why it is important to choose the correct soil for aluminum and know the main rules for using this material. Today I will tell the standards of recognition of primers in order to further finish the quality of the finish.
Aluminum primer
The main thing is to prepare surfaces
Soil for aluminum bicycle frame
We are always wondering what paint to choose and how to properly apply it on the walls and various surfaces. But, unfortunately, we do not always pay forward attention to the preparation of the foundation and materials for this process. Immediately I want to say that aluminum adhesion with paints and varnishes is very low. This is due to the smoothness of aluminum products.
Important! Always choose only specialized soils from manufacturers with quality certificates. Aluminum products are sold in aerosol cartridges.
To apply an aerosol, some activities with a painted surface should be made. Let's split them into 4 stages:
- Pools aluminum acid and degrease the surface
- With chromatic processing, we create a conversion layer. Such an event improves the adhesion of soil and LKM
- With the help of water, we wash aluminum from salt residues. To do this, use only good purified water.
- Seeing the painting area
Such technology occurs in the factory conditions painting, and therefore if you apply primers for aluminum with your own hands, then use acetone or another solvent, with which you can remove from the surface of the flax and dirt. Before applying an aerosol, aluminum is drawn up with a small-grained scenario. After that, it is possible to apply soil on aluminum, the drying of which occurs on average per day.
Soil Vl-02
Soil Vl-02
Let's consider the soil of the domestic manufacturer, which meets all the standards for GOST. This mixture is two-component and consists of such parts:
- The basis is due to the complex components in the material, the primer acquires excellent adhesion for the complex surface of aluminum and becomes shockproof
- Acid diluent - thanks to him there is an etching of aluminum base during primer
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If we talk about the method and technology of application, then adhere to these rules:
- It is necessary to take the glass container and pour the base there. Do not forget that the container
There must be acid-resistant
- The acid diluent is mixed with the basis in proportion 1: 4, where 1 part of the diluent is taken and 4 parts of the foundation
- After that we are waiting for 20-30 minutes and mix well the resulting solution to a homogeneous state. Be sure to withstand at least this time, otherwise the polyvinylbutiral will not have time to dissolve. When the soil is ready, it should be used for eight hours
- Aluminum primer apply a thin layer. You can use a sprayer or just take a brush. Drying soil occurs very quickly - on average in one hour the whole surface will dry
The pricing policy on the material is quite attractive and allows you to use this mixture to prepare aluminum. On average, one kilogram of the soil Vl-01 you will learn about 100-120 rubles.
Important! If you use polyurethane paint, then aluminum does not need ground. It is quite well to degrease the basis and then apply a polyurethane mixture, which in itself has the properties of good adhesion.
Corrosion protection
Apply a primer on aluminum discs
The patient of the metal is its corrosion, which arises from the adverse effect of moisture, air and electrochemical reaction. Aluminum is certainly more resistant to the emergence of a corrosive fly, however, as I noticed, and it needs to be protected. It is painting and is a high-quality protection of the material, and the soil that provides not only good adhesion, but also strengthening the structure, as well as protection against chemical exposure is an indispensable attribute when painting.
At home, only an aerosol will help protect and prepare aluminum under the next painting. This method is customary called "without anodizing", but industrial conditions allow anodized methods using chemical or electrical aluminum processing.
Important! In many automotive stores, you can purchase a one-component composition, called the HB Body soil. This is an aerosol that is easy to apply and which is an excellent alternative to self-dilution of the soil.
Choose paint based on the used soil
Primer for aluminum disks
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Paint and soil are the components that need to be chosen, leaning on each other. But if we argue that the paint is applied after the primer, then choose the LKM depending on the soil used. The list of soils for aluminum is very large and here are some of them:
- VL-02 and VL-08
- GF-031.
- Zinc Beloil
- EP-51 - epoxy paint having white color
Selecting the paint, you must navigate the price of the manufacturer. There is a mass of cheap mixtures, but many do not risk and use only high-quality materials. For myself, I allocated several brands that have long established yourself only with a good side. This is Ticcurila, Hempel, Ducson. Always look at the palette and read reviews about LKM. At your experience, I already checked that white mixes burn out much faster than the discoloration of colored paints. And this is all despite the stated properties of protection against ultraviolet rays.
Is it possible to paint on the old coating?
We use soil for aluminum before painting boat
When all questions with the choice of soil are solved, it remains to understand whether it is possible to apply a new paint on the old one? So it is not necessary to clean the surface only under the observance of two conditions:
- Old paint should not be squeezed from aluminum surface
- The old coating should not differ from the type of new LX, which is used to be used
If you do not fall under these conditions, organic workouts will come to help, which are used in this way:
- When the wash is applied to aluminum, cover it with a layer of polyethylene. This layer must be on the surface about half an hour.
- Using plastic or wooden scrapers, with aluminum you should remove the swollen mixture. Using a washes, the process will be sufficiently light and fast
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In order to understand compatible LMI with an old coating or not to spend some experiments. To do this, it will take some time, however, you will definitely recognize or not to apply soil and paint to such a surface. Using 646 solvent, moisten a piece of cloth and attach it to aluminum. After that, on top of the rag, put polyethylene and cross the tape at the edges to achieve sealing. Now leave this plot at least for a day and do not perform any action with the surface. If after that the paint does not begin to swear, the surface is fully ready for applying soil and paint of any kind.
Important! If you plan to paint a boat from aluminum, never use a suj or titanium paints. These mixtures have a negative property to destroy the structure of aluminum, not to mention the rivets that are used in the production of boats.
RESULTS
Primer for trunk lid
For any surface, the use of high-quality and most suitable materials is very important. However, for aluminum it is extremely important due to its smooth structure, which cannot provide good adhesion. That is why use a special soil that will serve as an excellent basis for the LKM.
Prefer certified materials and do not buy cheap not proven soils. For convenience, apply aerosols, which, although a little more expensive, but still more convenient to use with their own hands. Only a good soil will be the basis for a long service life of aluminum products.