Than degrease the surface? How can I degrease the surface of the car before painting?

When you need to paint a fence or a metal pipe, it does not matter how and by what means this work will be done. But it's quite another matter when the question concerns a car. Each owner in the process of painting the body is very important, so that the result is the highest quality. Therefore, without the use of special tools can not do. The first step before painting works is preliminary preparation of the body. In the course of this work, the old paint is removed from the car. Then the metal must be necessarily degreased and there motorists face problems. Let's try to figure out what degreasing surfaces on modern cars and how to do it right to get the best quality result.

What are the means

Often, to combat fatty film, which is on the body, motorists in the old manner use lint-free napkins, treated with some kind of solvent. Experts do not recommend doing this procedure in this way. This option is suitable only when it is necessary to process only a small area. If you look at the assortment of preparations for the preparatory work before painting, which are produced today, you can identify several means than degrease the surface of the metal. These are various solvents and substances of organic origin, emulsions, as well as special solutions, which include synthetic detergents. Experts recommend using the latter. These drugs successfully and confidently win not only fatty film, but also fight against dirt and corrosion effects no less effectively.

White Spirit

One of such organic solvents is the familiar white spirit. It is used in the initial stage of bodywork. Then, in more subtle stages, a mixture of alcohol with orthophosphoric acid is used. Such a solution thoroughly cleanses the traces of fat from the metal surface. But there are other drugs than you can degrease the surface of the car. One such means is trichlorethylene. This is the most famous representative of the group of organic solvents. It comes into active reaction when in contact with aluminum bodies. At the same time, during the reaction, combustible substances are released, which increase the risk of fire in accidents. It is extremely undesirable to use it. If trichlorethylene goes into reaction with water, then on the body will form a sticky mass, which is not so easy to remove. If there is no other option than to degrease the surface of the car, then this drug will do. But it works only in the absence of moisture on the surface.

Special preparations for processing

Professionals who have long been engaged in painting cars know and recommend the use of special tools - they are not the cause of fires, nor do they release any chemical compounds harmful to humans. But beginners often ignore the advice and supposedly "know" the better the surface is degreased. Often, kerosene, gasoline, acetone and even diesel fuel are used for this. In fact, all of the above can be used only when the nearest auto cosmetics store is approximately 100 km.

Petrol, diesel, acetone, as an alternative to white spirit

People who have never before done preparatory work for painting, often confuse white spirit with other substances like gasoline, kerosene and diesel - all these fluids are very similar in smell. But the functional difference between them is not great. They are mixtures of hydrocarbons that are produced by distillation of oil fractions. All substances perfectly dissolve different mastics, spots of bitumen or fats. But diesel and kerosene are very hard to wash off, although in principle they are suitable for degreasing. Professional car washes use kerosene, but they use specialized equipment that makes it easy to remove traces of substances and odor. In the garage conditions, treatment in this way will be detrimental. With extreme caution, you can use acetone, as well as solvents 646 or 645.

Anti-silicone

Antisilicone than degrease the surface, are considered the best choice for all ordinary car enthusiasts who decided to prepare the body for painting with their own hands. With the help of these tools, you can not only remove fatty films from the surface. Anti-silicone is suitable for cleaning dirt and dust. The use of these means is optimal also when it is planned to paint only the local painting of the body. In addition, that the given preparation shows an excellent degreasing effect, it also does not destroy metal or old paint.

Antistatic

How to degrease the plastic surface? Antistatic will be as safe as possible. The matter is that the plastic has properties to be electrified and attracts dust. This can be a headache for the owner - in such conditions it is very difficult to remove fatty film. With the help of antistatic, this problem is solved very quickly and effectively. The composition will perfectly clean the fat and dust.

Alkali based products

This is another group of drugs than degreasing surfaces when painting. Under these means are hidden known to each detergent composition, in which there are alkalis. They help not only to perform degreasing with high efficiency, but also easily remove various impurities. But use alkaline drugs with caution. When the treatment is completed, it is better to put the car in a closed clean and dry room, where the body can dry well. In most of these mixtures, besides alkalis, various emulsifiers can be found. These substances come into contact with fatty products at temperatures from 60 degrees. After the composition dries, the greasy film remains on the metal - after that it can be easily removed. If the car owner decided to fight with fatty films in this way, it is important not to allow a strong foaming. Foam bubbles can not provide suitable conditions for starting the interaction with fats. The desired effect will not be.

Electrochemical treatment methods

This is another version of what you can degrease the surface before painting. However, it is not suitable for those who own a garage or a home workshop. This process will require electricity of industrial frequencies. An important point is polarity. It is defined by the type of metal. The anode will be connected for work on degreasing the steel, and the cathode is used for non-ferrous metals.

Multi-stage cleaning

The first thing to do is to refine the body with white spirit. What if there are signs of corrosion on the surface? In this case, it is necessary to treat the surface using orthophosphoric acid with alcohols. This composition is a mixture of ethyl alcohol in a ratio of 15%. Also, part of the water and phosphoric acid is mixed in a ratio of 1 to 5. Additionally, an emulsifier-wetting agent OP-7 is used in an amount of 0.5%. Also 0.1% of nitrobenzene is necessary. At home, getting this mixture is difficult - some substances are not available. Also it is worth remembering that the composition is hazardous to health.

Summary

Answering the question about how to degrease the surface of the car, you should consider some parameters - the effectiveness of the product, its price and economy. The ideal option is one that meets all these requirements, but it's very difficult to find something on sale. In addition to all these factors, it is necessary to take into account the harm that the agent will have on the metal or on human health. Therefore, you need to get maximum information about the drug. It is not superfluous to buy protective equipment for the respiratory tract - masks and respirators.