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Do-it-yourself car corrosion control

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To remove rust from the car body it is not necessary to contact a branded car service. Many motorists can remove small spots of corrosion and chipped paint on the body, doors or hood of the car with their own hands. Removing rust from the body will extend the life of your car and improve its appearance.

Pockets of rust on the body can appear both from the "aging" of the car, and as a result of careless handling. It is worth, for example, once inadvertently opening the door, and chips are right there. What to do with this is unclear: repainting the door is expensive, and driving with them is fraught with consequences.

We will tell you how easy and simple, and most importantly inexpensive, to independently get rid of rust on a car body and to reliably protect it from corrosion. At the end of the article watch the video rust removal in the most efficient and easiest way.

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And so, we propose to consider the main methods of self-removal of rust from the car body.

How to remove rust from the car body with your own hands

There are several ways to get rid of rust on a car body, but in this material we will consider only two of the simplest methods that almost every motorist can do with his own hands.

  1. Mechanical rust removal,
  2. Rust removal by electrochemical method.

The first method is very cheap, but at the same time more labor-intensive, and the second is quite simple, but the cost of the materials used can sometimes be slightly higher than in the first case.

After removing the rust, it is advisable to paint over the damaged area on the car body, regardless of which of the above methods you choose.

For these purposes, in many cases, cosmetic enamel in the form of a small bubble with a brush resembling nail polish is great. You can choose such an enamel to match the body color using the fan catalog, which is available in any car shop with a car paint department.

The procedure for removing rust by mechanical and electrochemical methods, as well as their advantages and disadvantages, we will consider below.

Removing rust from a car body mechanically

Removing rust mechanically involves cleaning the areas susceptible to corrosion to metal using sandpaper or a metal brush.

After cleaning, such places must be treated with a rust converter and painted over.

Advantages of mechanical rust removal:

  1. The ability to remove large areas and difficult places that have “bloated” paints, active “raised” corrosion,
  2. Everything you need to remove rust can be bought at any automobile or even in a hardware store,
  3. Low cost of materials used.

The disadvantage of this method of combating rust can be considered quite a high complexity, as well as the duration of the process.

To remove rust mechanically, we need:

  • any rust converter,
  • masking tape
  • a little sandpaper
  • cosmetic enamel
  • rags for washing and cleaning.

If the damaged areas have undergone severe corrosion, then you need to use a coarser sandpaper (grain size 120), or a metal brush. But in most cases, to remove rust, fine sandpaper with 400 or 600 grain will be enough.

The procedure is as follows:

  1. Wash the machine thoroughly before starting work so that all damaged areas are clearly visible - instructions on how to wash the machine.
  2. With a sandpaper or brush, rust must be cleaned to bare metal. It is not worth it to get involved in this process so as not to remove the paint near the damaged area.
  3. The cleaned surface must be wiped, and if necessary also degreased (depends on the rust converter you use).
  4. Use masking tape adjacent to the damaged part of the body, which will not be processed.
  5. Treat the prepared area with a rust converter to protect the metal from the spread of corrosion in the future. Most of these products convert rust to soil, which improves paint adhesion.
  6. After the rust converter has completely dried, repair the place of repair with cosmetic enamel.

The last sixth item refers to small area damage. If significant elements of the body were exposed to rust (for example, thresholds or cavities under bumpers), then cosmetic enamel is indispensable - these places will have to be puttied, primed and painted. For more details on how to do this, see our car paint instruction.

Electrochemical rust removal from a car body

Under the electrochemical method of removing rust, we mean carrying out redox reactions on damaged parts of the body in an electrolyte solution under the influence of an electric current.

At first glance it seems that it is very difficult. But in fact, this process is the easiest and most reliable way to get rid of rust and protect the body from corrosion for many years.

To remove rust by electrochemical method, there are special ready-made kits, such as Zincor-Auto. Following the instructions, almost any motorist will be able to remove rust on their own.

Advantages of the electrochemical method:

  1. Complete removal of rust in damaged areas of the body,
  2. Application or restoration of the protective layer of zinc by the electrolytic method,
  3. Safety for car paintwork, due to the absence of phosphoric acid in the composition of the solutions,
  4. The result is achieved in a short period of time - for everything about everything no more than an hour,
  5. Easy to use.

Among the shortcomings, we can note that the technology of electrochemical metal cleaning does not allow to cope with large areas of through corrosion without additional technical means (cold welding, soldering, etc.).

In car dealers, a set for local rust removal and subsequent galvanization of the Zincor-Auto body surface costs about 1,500– 1,600 rubles, but in many online stores it can be bought cheaper.

The kit includes:

  • Solution No. 1 for degreasing and removing rust,
  • Solution No. 2 for applying a protective zinc coating,
  • Stainless steel electrode No. 1 for surface preparation,
  • Electrode No. 2 with a zinc tip for applying a protective coating,
  • Connecting wire
  • Instruction

The set is designed for processing up to 1 square meter of surface.

The process of removing rust in an electrochemical way is simple (see video below):

  1. We connect the connecting wire "crocodile" to the car battery, and the second end to the electrode No. 1 from the kit,
  2. We wet the connected electrode No. 1 in solution No. 1 for degreasing and removing rust,
  3. With smooth uniform movements, we clean the surface of the metal from dirt and rust residues, and then wash off the remaining solution with a copious amount of water,
  4. We connect electrode No. 2 to the wire and wet the electrode swab in solution No. 2,
  5. With light uniform movements of the electrode, we apply solution No. 2 over the entire working surface until the surface of the stripped metal darkens and becomes more dull.

For applying a strong protective layer with a thickness of up to 15 microns, 2-3 minutes is enough. The whole process is well shown in the video below.

1200 rub. for photo report

We pay for auto repair photo reports. Earnings from 10 000 rub / month Write:

The fight against car corrosion often causes a lot of problems to its owner. Three main methods are used for this - passive, active and electrochemical, but each of them has its advantages and disadvantages. Most often, corrosion is removed using special tools. And for prevention purposes, on the bottom, thresholds of the case and other hidden places they stick a protective film or process it with mastic. There are also other preventative drugs, which we will talk about later.

Causes of Corrosion

To begin with, we will understand why corrosion processes arise. The fact is that there are four types of corrosion of metal surfaces - electrochemical, chemical, hydrogen and oxygen. In the context of rusting a car body, only the first two types occur.

Electrochemical corrosion occurs due to the fact that two materials with different reducing properties interact through an electrolyte (any non-distilled water is such). Since iron has low reducing properties, it is significantly susceptible to rust. Chemical corrosion occurs due to the interaction of a metal surface and a corrosive medium. The role of the latter can be oxygen at high temperatures. Understanding the essence of emerging processes gives us the basis for the search for methods of combating corrosion.

Types of anti-corrosion

There are two main ways to protect a car body from corrosion. The first is barrier protection. It does not allow the physical interaction of the surface of vulnerable metals with the environment. This is expressed in the use of paintwork and various mechanical means and protections. The second is tread protection. Its example is galvanization, because zinc has a more negative potential than iron. Accordingly, if you connect them, then in such a pair, iron will be restored, and zinc will corrode. However, since there is an oxide film on the surface of zinc, this process occurs very slowly.

As mentioned earlier, there are three main types of anti-corrosion in a car:

Corrosion Removal Brushes

  1. Passive.
  2. Active.
  3. Electrochemical.

Passive fighting method involves the use of paintwork. The task of the car owner in this case is to maintain the integrity of the paintwork. Small chips or scratches on its surface must not be allowed. This method also includes periodic washing of the machine, as well as the use of additional protective agents - wax, water glass, and so on.

Under active method of struggle with corrosion, cars imply the use of special anti-corrosion materials and mastics. They differ depending on which body parts are used. For example, the underbody is often treated with an anti-gravel coating. As a rule, these compositions are created on the basis of finely divided aluminum powder. There are also special anti-corrosion agents for wheel arches. Most often, the so-called liquid locker (strong elastic material) is used for this. A separate class is anticorrosive materials for hidden cavities. They are designed to handle thresholds, struts, spars, floor amplifiers and other surfaces.

Electrochemical control method with corrosion of metal on a car body is the use of a special electronic device, which incorporates an electrode designed to take on corrosion. Simply put, it will not rust the car body, but the electrode mentioned. This method is very effective, but its significant disadvantage is the high price.

How to remove corrosion from a car

Now we turn directly to the methods and means of combating corrosion in a car with our own hands. First of all, it is necessary to mechanically remove rust from the surface. And do it very carefully! For these purposes, use sandpaper, various abrasive wheels on a drill or grinder, as well as sandblasting. It is the last tool that most effectively cleans the affected surface.

Also, special compounds are used to remove corrosion. The simplest in this case is the use of a weak solution of hydrochloric acid with its subsequent removal.

However the most reliable anti-corrosion method is to use rust converters or modifiers. They convert iron oxide to iron tannate. As a rule, they include polymers acting as a primer.

Rust converters for automobiles convert corrosion into a layer of phosphates and chromates of iron and zinc. They are also sometimes used to treat non-corroded metal before applying the soil to prevent future corrosion, and to improve the degree of adhesion of paintwork to the metal surface.

Independent fight against car corrosion has the following sequence:

    Degreasing the surface. To do this, you can use various means, for example, alcohol or white spirit.

Removing rust from the housing

Remember that all work must be carried out carefully, since even a small spot of rust can grow significantly over time.

Rusty seam visible

Always check the condition of the welds on the car body. Remember that they are the most vulnerable to corrosion. In particular, its intergranular form, which is especially dangerous. The consequence of its appearance is an imperceptible loss of ductility and strength of the metal. So, the boundaries of welded grains are destroyed randomly, and the regions of structural transformations turn into an anode, which dissolves intensely. Moreover, this phenomenon can be observed not only on the iron bodies of machines, but also on stainless steel, aluminum, chromium-nickel and chromium alloys. Corrosion in this case threatens to spall individual grains of metal, due to which the seam and the body as a whole gradually lose their mechanical properties.

The most susceptible to rusting parts of the car body are the lower parts of door panels, sills, front wings, box sections of the lower body, and the inner surface of the wheel arches. Due to the fact that access to these places is difficult, there is always a risk of not noticing the appearance of foci of rust. Check their condition on the inspection hole or on the lift!

Popular rust removers

Currently, there are dozens of different rust converters in car dealerships, and their range may be different in different regions of the country. Therefore, it makes no sense to give recommendations regarding the purchase of a particular product. But we still give as an example a few names of popular compounds that are common among car owners. So:

The popular tool "Tsinkar"

  • Tsinkar
  • Movil
  • Hi-Gear Rust Converters
  • "Mail"
  • Sonax
  • "SF-1",
  • Runway
  • Permatex
  • Bitumast,
  • "Phosphomet".

It must be remembered that with any converter you can deal with rust, the layer of which does not exceed 0.1 mm. In addition, the active components fight only with stubborn rust. It is better to remove its loose component mechanically (using sandpaper, a knife, a metal brush, sandblasting, and so on).

The choice of a particular tool should be based on the assortment, its composition, price. Fortunately, they are inexpensive, so if the purchased product is ineffective, you can always buy something else.

How does rust appear

The main cause of rust is the destruction of the protective layer of the housing, drum or tank. The destruction of the layer may occur due to physical or chemical effects on the surface of the parts. In addition to corrosion, on the surface of the drum, tank, powder compartments, rust can appear in the form of plaque, consisting of calcium and iron salts. But the main thing - for whatever reason rust appears, the laundry in such a washing machine cannot be washed until it is removed.

Methods for cleaning the outer casing

If rust appeared on the housing of the washing machine, while the housing did not rust through, then it will need to be not only cleaned, but also painted. Cleaning and painting is as follows:

  1. A surface with peeling paint and traces of corrosion must be cleaned with sandpaper (80 is suitable) or a grinder.
  2. Remove rust residues with the help of a special solvent “Ziankovka”. It is sold in the form of a spray. The spray is applied to the cleaned surface and rubbed with a hard synthetic brush (an old toothbrush or for cleaning clothes will do). After wiping dry with a napkin.
  3. Close the drum, door and parts of the case that are not damaged by corrosion with cellophane or cloth so that they do not get paint.
  4. Warm the surface with a hairdryer. On a heated surface, the primer and the paint lays better and lasts longer.
  5. Apply a primer in two layers. Between the first and second pause for 10-15 minutes, so that the first layer has time to dry. For work it is better to use a primer and paint in spray cans. They are easy to apply and dry quickly.
  6. After the primer dries, apply the paint. The paint should be enamel for metal surfaces and the same color as the body of the washing machine. A day later, the machine can already be connected.

You can often see traces of rust on the plastic parts of the washing machine. Появление бурых пятен и подтеков может быть как признаком коррозии металлического корпуса, так и следствием некачественной воды.You can clean the car from rust from plastic and return it to its original form using Domestos, Comet, or Mr. Muscle. Any tool for cleaning the surface of scale and rust is suitable. Apply and rinse with a sponge after 5-10 minutes.

Rust inside the machine, how to fix the situation

A washing machine can become rusty not only from the outside, but also from the inside. This often happens if the operating conditions were violated or the manufacturer decided to save on the material from which the drum and bolts are made, which attach the internal parts and therefore experience the aggressive effect of water and detergents. To get rid of rust on the drum or bolts, if they appeared due to the manufacturer using cheap low-quality materials, you can only replace these parts with better ones.

Violations of operating conditions also include non-compliance of the quality of water that flows from the tap with the requirements of the manufacturer of the equipment. This refers to the water content of calcium, iron, phosphorus, etc. Under the influence of high temperature, they are released from the water and settle on the walls of the drum, heater, tank, compartment for washing powder, forming a coating. The first layer of plaque is dense, and the second and third are loose. It is formed not inside the drum, but on its outer side. During rotation, particles of a loose layer fly off and, together with water and detergents, fall onto clothing. As a result, things are covered with brown traces of rust and scale.

Complex pollution

It is not always possible to get rid of the appearance of rust stains on clothes in the above way. If you use the washing machine for a long time, and rarely clean it, while not observing the operating rules, then over time a lot of garbage can accumulate inside it. Debris clogs the filter and outlet valve. As a result, the water, slowly seeping, leaves, and garbage, including flakes of rust, remains inside. You will have to clean the filter, tank, valve and cuff from dirt and debris. You can remove them only by disassembling the washing machine.

Signs of rust inside the machine

In addition to the appearance of characteristic brown spots on washed clothes, there are other signs by which it can be determined that the washing machine, although slowly but rusts from the inside.

  • The appearance of rusty smudges on the plastic panel of the washing machine, the compartment for powders and gels, the pallet.
  • The appearance of rusty stripes and stains on the cuff.
  • Red stripes and spots on the drum.

One of the first signs of the destruction of the machine from the inside is the appearance of an unpleasant odor. This is due to the fact that garbage accumulates inside the washer, which prevents the removal of excess moisture and detergents from it. As a result, an aggressive environment is formed inside the apparatus, which leads to the oxidation of internal iron elements. If the drum is not made from a single sheet of stainless steel, but has only a stainless coating, then if it is damaged, traces of corrosion may appear.

Prevention

Rust on a washing machine appears when the operating and storage conditions of the device are violated. There are simple rules that must be observed in order for the washing machine to last as long as possible.

  • The room where the washing machine stands should be ventilated. This is necessary so that in the room where the apparatus is located the humidity was not high.
  • Do not hit, do not drop the machine.
  • Always keep the drum door always ajar so that moisture does not accumulate inside.
  • Do not leave metal objects in your pockets that could scratch the surface of the drum.
  • Periodically (at least 1-2 times in 3 months) descale or place a magnetic filter on the water supply pipe to the washing machine. To soften the water, 1-2 tsp can be added to the powder and gel tray. soda ash or Calgon measuring cup.
  • Use special tools to clean the washing machines from the inside of debris: animal hair, villi, etc.

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