The body is the part of the car that the owner worries about the most. And this is not surprising, because its replacement is an unreasonably expensive undertaking, it is easier to buy a new car. Accuracy on the road will protect you from external damage and scratches on the paintwork. As for the protection of metal from corrosion, anti-corrosion materials will help here. We will tell you more about what kind of anti-corrosion agent is needed for one or another part of the body, and about the most interesting proposals of manufacturers.
What should be a quality anticorrosive
More recently, the choice of a motorist in terms of protective autochemistry was limited to Movil, cannon fat and two or three types of liquid mastics. Today the market offers dozens of options for processing body parts. Despite this diversity, they are divided into anti-corrosion agents intended for the treatment of hidden and external surfaces.
The first meet the following requirements:
- high adhesive ability to smooth surfaces;
- the ability to create an elastic film after drying;
- chemical neutrality to metal, plastic and paint coatings;
- the possibility of penetration into the structure of the metal;
- fluidity sufficient to fill the slightest cracks;
- homogeneous structure;
- the ability to displace moisture and electrolytes from the surface.
These conditions are fully met by oil formulations. They have excellent penetrating power and are liquid for a long time, however, due to their low strength, they are not suitable for outdoor use. In addition, wax-based products are also presented in the distribution network. Like oil anticorrosive for cars, they are applied with, but they penetrate much weaker into the steel structure. The advantages of paraffin compositions are different. They fit equally well on paint and on, forming protective film through which neither moisture nor chemicals can penetrate.
A number of the requirements discussed above are replenished with a few more points, if the materials for anti-corrosion treatment car used outside:
- Mechanical strength sufficient to withstand the blows of gravel flying out from under the wheels and the abrasive effects of dust and sand;
- The ability not to flake off and not crack under alternating loads and mechanical deformations of the body.
Modern anticorrosive agents extend the life of body parts and increase acoustic comfort in the cabin. At the same time, they will be able to fully express themselves only when the application technology provided by the manufacturer is observed.
Types of anticorrosives
Depending on the composition, funds for are divided into several types.
Bituminous mastics
Made on the basis of bituminous or synthetic resins, anticorrosive agents of this group cope with the conservation of body parts, slowing down corrosion processes and protecting treated surfaces from mechanical damage. To do this, corrosion inhibitors and dispersed non-ferrous metals are introduced into their composition. Mastics are applied in a thick layer - 250 - 400 microns, due to which they also perform a soundproof function.
Rubber and PVC materials
Mastic for the bottom of a car based on rubber or polyvinyl chloride is the most resistant and belongs to the deposited, since it is applied in a state heated to a high temperature. Materials of this class have very high adhesion and create an extremely strong, but due to the complexity of the technology, they are used in the factory.
liquid plastic
- This is an anti-corrosion paint based on acrylic compositions, which has anti-corrosion capabilities and, after drying, creates a durable protective film. Due to insufficient mechanical resistance, it is used more often to protect body parts such as sills, hidden cavities of arches, elements engine compartment etc.
Manufactured on the basis of bituminous and synthetic resins with the addition of mineral filler, shale mastic has high strength and resists abrasion factors. If you are looking for anticorrosive for the bottom, wheel arches or fenders, then you will not find the best material for self-treatment of these body parts.
Anti-corrosion primer
Anticorrosive primer refers to traditional anticorrosives conditionally. This material protects the metal from corrosion and is the lowest layer of the paintwork. At the same time, the restoration of the latter is possible only after priming with materials with anti-corrosion abilities.
Already by the name it is clear that this anticorrosive is durable and is intended for protection body elements from small pebbles and gravel flying out from under the wheels. With it, protect the lower parts of the wings and doors, bumpers, sills, spoilers, etc.
The best anti-corrosion products for cars
Even if outwardly everything is in order with the car, this does not mean at all that corrosion centers have not appeared somewhere under the paint. In order to keep the body in its original form for as long as possible, you should take care of its protection in advance. Not sure what to choose for processing body parts? We offer you a rating of anti-corrosion agents, which, judging by the reviews of motorists, are the most effective and have the best combination of price and quality.
For external processing
There is a huge range of anticorrosive agents on the market to protect the exterior surfaces of cars, but car owners and service station masters often use the following brands.
BODY 930, BODY 950
BODY brand drugs have acceptable price and good operational properties which earned them popularity Russian market. Mastic BODY 930 with a thick consistency, so that after drying it forms a strong elastic layer. Consumers note one drawback of this anticorrosive agent - low resistance to abrasion.
As for BODY 950, this agent is applied in the form of an aerosol, has increased hiding power and high penetrating power. It is devoid of the disadvantages of BODY 930 brand mastic, however, it has a higher cost.
One of the best, though not the cheapest material for protecting the bottom of a car. The anticorrosive agent made by German specialists proved to be the best in the process of many years of use. He has maximum margin strength against any impact - high humidity, ultraviolet radiation, aggressive substances, temperature changes and mechanical damage.
The drug of one of the most eminent foreign manufacturers is fully responsible high status brand. Car owners note good adhesion, stable performance and elasticity throughout the entire service life. However, the disadvantages include insufficient mechanical strength of the material, which is why it is recommended to apply LIQUI MOLY UNTERBODEN-SCHUTZ in two layers.
A Swedish-made anti-corrosion compound that is able to reliably protect the lower parts of the car body and does not require complete drying. The composition of the drug includes strong corrosion inhibitors, which, combined with thixotropic properties and excellent adhesion, allows you to create the most hermetic coatings. The disadvantages include perhaps a rather high cost, but this drawback is inherent in all anticorrosives of European manufacturers.
Anticorrosive Russian development, which is not inferior to Western counterparts, is used for processing external body elements and as a protective layer on the inner surface of car arches. The disadvantage is a persistent smell, which will take more than 10 days to weather.
Product domestic production with a low price and good anti-corrosion and sound-proof properties. The disadvantages of polymer-composite mastic of this brand include low thermal stability.
Anticorrosive for hidden cavities
When choosing an anti-corrosion agent for hard-to-reach places, preference is given to those materials that reliably protect and do not create difficulties during application.
It is considered one of the best means for processing joints and welds. The rubber filler makes it possible to create an extremely strong, elastic film that copes with protection from moisture and electrolytes. However, consumers note some features Hi-Gear usage- the need for careful surface preparation and application of the agent in two layers.
Movil
Anticorrosive, known since the times of the USSR, has excellent penetrating abilities and after drying forms a resistant wax coating. There are several “movils” that differ in composition, among which they choose those that dry longer. As practice shows, they provide maximum protection and durability.
Canadian-made anti-corrosion composition, which, due to its high fluidity, is universal. low price and good penetrating ability determine the popularity of this tool among car owners. At the same time, it also has disadvantages - increased sensitivity to the purity of the base and too long stay in the liquid phase.
Like Rust Stop, it is used for processing outdoor and hidden surfaces. In addition to good anti-corrosion properties, it also has excellent sound insulation abilities. It is better to entrust the processing with this tool to professionals, since low fluidity requires special equipment and skills. The disadvantages of Noxudol 1600 include drying time (more than 3 days) and the need for additional protection of electrical wiring.
The car must be regularly treated against corrosion during operation. when driving, it is destroyed from scratches, blows caused by small pebbles. Moisture gets into the damage, which causes corrosion processes. Anticorrosive agents, or anticorrosion agents, are designed to prevent the development of these processes, protect against the formation of rust. Today there is a wide range of anti-corrosion materials, so motorists have a question, which anti-corrosion agent is better for their car, what is the best way to process the bottom of the car, and what is the body, hidden surfaces.
Advantages of using anticorrosives
Some car owners do not use anti-corrosion materials to protect their cars. Meanwhile, their use provides many advantages:
- extends the service life of parts;
- acoustic comfort increases, as the knock from the pebbles becomes quieter;
- costs for anti-corrosion materials are much lower than for repair/replacement of parts.
Types of anti-corrosion agents
Types of funds depending on the use.
When deciding which anti-corrosion agent is better, first of all, keep in mind that the products differ in different parameters, one of which is the place of their application. According to the intended use, anticorrosives can be divided into two large groups.
For hidden surfaces.
Anti-corrosion for hidden surfaces should have the following properties:
- a high degree of adhesion (adhesion of the surface of the car and the vehicle);
- homogeneous structure;
- film elasticity;
- fill microcracks that are not visible to the eye;
- prevent the ingress of electrolytes, moisture.
Usually made on the basis of oil or paraffin. They are in a liquid state. These anti-corrosion preparations have a long shelf life.
For external surfaces.
These means protect the body, bottom, wheel arches from corrosion. Basic requirements for them:
- protect against exposure to electrolytes;
- have the highest degree of adhesion;
- be flexible;
- withstand mechanical deformations;
- do not flake off;
- do not crack.
The most common of these products are bituminous mastics, made on the basis of synthetic and bituminous resins; liquid plastic, rubber-based coatings.
Classification by application methods, composition
If you are thinking about the best way to treat the car body from corrosion, then, of course, choose anticorrosive for external surfaces. Anticorrosive agents for easily accessible auto parts produce the following.
Bituminous mastic
Produced on the basis of resins, protects the surface from mechanical influences, has the ability to preserve the metal. Apply it in a layer of 250-400 microns. Inhibitors that slow down the corrosion process, dispersed metal (formerly aluminum, now more often bronze, zinc) can be added to the composition. Great
From environmental influences, mechanical damage. They serve as good noise insulation, reduce the level of vibrations of body elements, the resonance frequency of parts.
Anticorrosive based on PVC, rubber
The most durable anti-corrosion agent applied at the factory. The polymer is melted, then applied to the metal surface. Very elastic drug, with high adhesion.
liquid plastic
Medium with low mechanical resistance. Applicable for sills, wheel arches, front of the hood as additional protection. On the body as the main means of protection is not recommended.
Slate mastic
It will help to solve the problem, the better to process the bottom of the car. It is used on the bottoms, when processing the wings, the inner surfaces of the wheel arches.
Antigravel
Creates a layer that prevents mechanical impact, rust. Let's apply to processing of bumpers, thresholds, spoilers, doors.
On hidden details cars apply the following anticorrosives:
- Oil-based, non-drying formulations. Anticorrosive remains in a liquid state after application,.
- Paraffin-based formulations. After drying, an elastic film is formed. The drug retains anti-corrosion properties at strong temperature differences.
The best anti-corrosion agents
Anti-corrosion for cars: which is better? This question will complicate the specialist, because it is impossible to choose any universal anti-corrosion agent from the widest range offered by manufacturers. The main thing is that the tool fits the stated requirements and is affordable. Consider a few of the drugs so that you can choose a few of them.
1. Dinitrol
Manufactured in Sweden. Highly appreciated by car owners. Qualitatively protects external surfaces from corrosion: body, bottom, wheel arches. Absent bad smell. Complete drying is not required. Please note that the product must be applied to a cleaned surface. The cost is 400-500 rubles.
2. Mercasol
Produced in Sweden. Fully retains protective properties in brine. Well protects the body and other surfaces from corrosion.
3. Movil
Russian anticorrosive, popular since the Soviet era. You can process joints, body joints. Effectively displacing moisture, it forms a wax layer with excellent penetrating characteristics. There are many varieties, the highest quality corrosion protection is provided by long-drying compounds. Applicable for use after processing by other means. Has a pleasant smell.
4. Waxoil
Produced in Switzerland. Applicable for hidden surfaces. Elastic and characterized by low consumption - 1 liter is enough to process a medium-sized passenger car.
5.Valvoline
Produced in Holland. Elastic and frost-resistant anticorrosive.
6. Cordon
Excellent anticorrosive, thick, versatile. Processing is enough for a year and a half. It is used for external surfaces (body) and hidden (inner surface of wheel arches). Before use, mixed with a solvent, then it becomes fluid. Dries quickly, depending on thickness. Disadvantage - the smell lasts for a long time, about 2 weeks. The cost of 1 liter is 400 rubles.
7 Rust Stop
Produced in Canada. Inexpensive anticorrosive, about 300-400 rubles per liter. Reliably protects if the body was well prepared for the use of anticorrosive. It is made for external processing, however, it is permissible to use it for internal surfaces. The disadvantage is that it is very liquid, does not freeze, flowing out of the cracks for several months.
The main function of anticorrosive is the maximum containment of the corrosion process, which is present on absolutely every car, it’s just that its hidden under-film development is not always visible to car owners. Metal is exposed to rust from the very beginning: during the manufacture of a car, its transportation, storage and operation. High-quality anticorrosive is the provision of a decent appearance vehicle for a long time.
Today there is a whole range of different anti-corrosion agents. They are divided into several groups depending on their chemical composition and purposes of use. For example, hidden cavities, inaccessible places with a lack of ventilation need an elastic water-repellent material. Whereas external surfaces, constantly exposed to the environment, need a durable coating that maintains integrity even when stones enter the body.
Anticorrosive for hidden surfaces
There are a number of requirements for high-quality anticorrosives intended for hidden surfaces:
- Don't destroy paintwork body
- Have a high degree of adhesion
- It is good to impregnate all microcracks
- have a uniform structure
- Displace moisture and electrolytes from metal surface
- Form an elastic film
- Penetrate into corroded metal areas
Among this type of anticorrosives, non-drying oil-based formulations are distinguished. Such a tool will be constantly in the liquid phase, which allows you to thoroughly fill all the microcracks hidden from our eyes. In addition, this anticorrosive has more long term service as it fills in any newly formed defects. Oil-based products do not have high mechanical strength. That is why such materials are not suitable for the outer surface of the body.
There are also paraffin-based products, that is, wax formulations. Such anticorrosives work well while they are in the liquid phase. After complete evaporation from the solvent composition, anti-corrosion properties appear to a lesser extent. Such material can be applied by any of the known methods: air or airless.
Wax anticorrosive fits equally well both on the painted surface and on bare metal. After drying, a wax film forms on the metal surface. Despite the fact that such an anticorrosive agent has a poor degree of adhesion and mechanical strength, the elasticity of the resulting coating is maintained throughout the entire service life of the applied composition.
Here we note that secondary treatment with preparations of the same composition, for example, mastic on mastic or wax on wax, will become ineffective. There are a number of explanations for this. If corrosion progresses under the existing coating, then the new composition will not be able to penetrate deep into. The penetrating power of most cavity cleaners is not sufficient to completely impregnate the rust and defects of the previous composition.
Thus, the moisture that is contained there will continue to destroy the car. It is advisable, in this case, to choose the best oil-based anticorrosive agent. This type of material has a high degree penetration and is able to suppress corrosion under the layer of the previous coating.
Anticorrosive for external surfaces
For anticorrosive agents intended for external surfaces, that is, for the bottom or wheel arches, completely different requirements apply:
- It is good to protect the metal surface from the aggressive effects of electrolytes
- Have a high degree of adhesion
- Be elastic
- Withstand mechanical deformations of the body
- Have mechanical strength, i.e. Will not crack or flake off from impacts from gravel or sand
To date, there are a lot of such funds on the Russian market. For example, bituminous mastics. They are made on the basis of bituminous or synthetic resins. The composition of such materials may include various inhibitors (retarders) of corrosion. These tools perform several functions.
Firstly, they perfectly protect the metal from the effects of the external environment, but wax compositions, for example, perfectly perform the same function. Secondly, bituminous mastics protect the metal car body from mechanical stress. We are talking about the conditions in which the bottom or wheel arches are constantly located.
Thirdly, collisions with certain obstacles, such as curbs, can cause the destruction of the protective layer. The best anticorrosives should also show stability and strength here. They are applied to the surface in a relatively thick layer - 250-400 microns. Thus, mastics serve as a good soundproofing material. They can also be used to reduce the level of vibrations of body elements. So, for example, applying a layer of mastic of a certain thickness will reduce the resonance frequency of power parts.
Bitumen anticorrosives, in turn, are also divided into two types: drying and non-drying. Materials that retain a wet structure throughout their entire service life have little mechanical resistance, but they remain elastic for a long time. To improve the abrasive strength indicators, dispersed metal (powder from small metal particles) is added to bituminous mastics.
A little earlier, aluminum was used as a metal, now bronze is increasingly used. The latest discovery was bituminous mastics, which include zinc. There is another type of anti-corrosion agent intended for external processing body - PVC coating based on rubber. Most often, such tools are used in manufacturing plants.
The coating technology consists in melting the polymer and its subsequent application to the metal surface. This type of anticorrosive is today one of the most durable means of protection against corrosion. The best PVC coatings have not only good elasticity and strength, but also a high degree of adhesion of the metal surface and the applied material.
Along with the listed types of anticorrosive, so-called liquid plastic is also used today. The plastic polymer film formed after application protects the paint surface well from impacts of stones, sand, etc. Such a tool is ideal for processing thresholds, wheel arches or even the front of the hood.
Liquid plastic cannot become the main anti-corrosion agent, since it does not have a sufficient level of mechanical strength. But as an additional protection, it is perfect.
Qualities of anticorrosives
"Which anticorrosive is better?" - this is the most expected question from the buyer, since it is easy to get confused in this in large numbers funds presented today on store shelves. There is no universal remedy, it is necessary to adapt to the specifics of the surface. Any high-quality anti-corrosion material must have certain characteristics:
- High resistance to corrosion processes
- Formation of a durable protective layer on a metal surface
- High degree of adhesion ( good grip with surface)
- Corrosion Prevention
- Prevention of the development of already formed corrosion
- fire resistance
- Fire and explosion-proof composition
- Non-toxic composition, safe for human health
To date, many companies are working on the creation of anti-corrosion agents. These are both foreign companies and domestic representatives. Among the best imported anticorrosives, we can distinguish German funds from Bivaxol, Rand, Swedish Dinitrol, Noxudol, Finikor, Dutch Tectyl, Belgian Soudal, Canadian Rust Stop. Among the Russian drugs, the funds of the companies KhimProdukt, VELV are allocated.
Before starting work, carefully read the instructions for using anticorrosive. Very often low quality anti-corrosion coating- this is not the result of a bad material, but a violation of the application technology. Any anti-corrosion material is applied to an absolutely clean and dry, thoroughly degreased surface. Pay special attention to the preparation of the work area, otherwise you will waste the purchased quality material without getting the expected result.
Many mistakenly believe that new car does not need cleaning. But this is not at all the case, and even a slight rinsing of the car body with water is not enough. Water will not remove the condensate present on the surface, factory anticorrosive, corrosion centers. An insufficient degree of body cleaning will only provoke the rapid development of corrosion. Often best anticorrosives are characterized by good adhesion, but this concept itself already implies the presence of a cleaned surface.
Modern technologies are presented here to car owners a pleasant surprise. There are tools that allow application to an unprepared surface. Their use does not require additional cleaning, drying and degreasing. In general, the effectiveness of most anticorrosives comes down to the quality of execution of the main stages: surface preparation, application of material, compliance temperature regime.
Whether a new car or not, it needs anti-corrosion treatment at least once every 3 years. If the car owner cares about the car, and he cares not only about her appearance, but also strength in general, modern anticorrosives will be simply irreplaceable. High-quality material will provide you with a strong and durable protective layer, subject to the application technology.
ANTI-CORROSION TREATMENT OF CARS
Many owners of cars with a galvanized body are convinced that they do not need additional anti-corrosion treatment. However, in reality, all machines need it without exception.
GENERAL INFORMATION
NON-PROFIT EXPERT CENTERS
In many European countries research work to reduce damage from corrosion is funded by the state. Thanks to this support, the Swedish Corrosion Institute (SCI), conducting a large-scale study of corrosion damage every three to four years car bodies, won great prestige with his expertise. This has led to the leading members and sponsors of the SCI being automobile concerns interested in objective data about their own products and in the subsequent implementation of the institute's recommendations when updating model range. IN last years specialists from automotive magazines, such as the Swedish VI BILAGARE, joined the examinations. On its pages were published data on the study of corrosion resistance 100 cars released after 1998. In combination with SCI information, this provides rich material for analysis and generalizations.
REVIEW OF MATERIALS FROM THE REPORT OF THE SWEDISH INSTITUTE OF CORROSION
INVESTIGATED BODY PARTS
Scientists were interested in the most vulnerable parts of the car. The marked fragments of the bodies were cut out and grouped according to the models. During mathematical processing, each cut element contributed to the overall corrosion pattern. All tested vehicles were operated for 3-6 years in rather harsh conditions in Sweden, Denmark, Norway and Finland on roads sprinkled with anti-icing materials and reagents.
THE MOST POPULAR PROTECTIVE TREATMENT COMBINATIONS FOR VEHICLES
Under the general term "galvanizing" fell fragments of bodies, on which zinc was applied by hot dipping into its melt or by electrolytic method; some parts had a zinc-nickel coating. The thickness of the zinc layer was 2–5 µm (“thin” galvanization) and 6–10 µm (“thick” galvanization). Some bodies were treated with wax and bituminous anticorrosive agents.
There were fragments without any protection. Body painting (protective primer layer with paint) was considered to be equally good. As a result, we received the following options for anti-corrosion protection:
1. Galvanized 6–10 microns plus anticorrosive;
2. Galvanized 6-10 microns without anticorrosive;
3. Galvanized 2-5 microns plus anticorrosive;
4. Galvanized 2-5 microns without anticorrosive;
5. There is no galvanization, there is anticorrosive;
6. No galvanizing, no anticorrosive.
When comparing the options, it turned out that a galvanized body without anticorrosive is less resistant than a non-galvanized one, but treated with anticorrosive. The best results were for cars with "thick" galvanization and additional anti-corrosion treatment: after six years of operation, they found only five percent surface corrosion. Information about which processing option is used on a given vehicle is only available to its manufacturers. Therefore, additional anti-corrosion treatment in any case will improve the degree of its protection.
An analysis of the results of studies in 1997, 2001 and 2004 shows that the anti-corrosion resistance of car bodies has improved in recent years.
WAYS TO INCREASE THE CORROSION RESISTANCE OF CARS
There are two main areas: improving the body structure and strengthening the protection of anti-corrosion materials. Spot welds and rolled joints are the most difficult to protect against rust. At the same time, one should not hope for a sharp reduction in welding points and a more thorough adjustment of the “bending” joints of body elements. The possibility of good ventilation of the internal cavities of the body with a simultaneous decrease in the access of water, dust, and salts to them also seems to be a difficult task. As a result, the simplest and most reliable method of protection is the application of modern anti-corrosion compounds.
MATERIALS FOR ANTI-CORROSION TREATMENT
GENERAL REQUIREMENTS FOR COMPOSITIONS DEPENDING ON THEIR PURPOSE
Materials for the protection of hidden cavities (ML-preparations - in the first letters of the company name - Motormannens and work manager - Lurin) must:
penetrate well into micro-gaps and cracks;
be homogeneous and thixotropic (ability to hold onto a vertical surface);
displace water and electrolytes from the metal surface;
effectively impregnate corrosion products (rust);
contain inhibitors (retarders) of corrosion;
form an elastic film;
not render harmful effects for paintwork;
have reliable adhesion (adhesion to metal or other coating);
do not have a strong odor.
Materials for protecting the bottom and wheel arches (UB preparations - abbreviated "under body" - "under the body") should provide (along with the properties characteristic of ML preparations):
mechanical strength and abrasive resistance to impacts of sand and gravel, no cracking and delamination;
elasticity, which allows to withstand operating temperatures and mechanical deformations of the body;
good metal insulation from aggressive environments.
Materials for anti-gravel protection must:
protect the factory paintwork from the intense abrasive action of sand and gravel;
be compatible with the factory coating (applied to the previous protective layer, paint, primer;
dry at room temperature;
allow staining after application;
mix with car enamels.
Paint protection materials must be water-repellent, UV-resistant, contain corrosion inhibitors, penetrate into the pores of the paint and additionally protect it.
Professional anti-corrosion materials are special chemicals obtained under high-tech production conditions (they can include up to 250 components) in accordance with the requirements of international (for example, ISO 9002) and national standards.
Currently, there are four generations of such materials. Anticorrosive formulations are classified by manufacturers, so the boundaries between generations do not have strict outlines. The world's leading manufacturers of anticorrosives have a range of 6-20 preparations that meet all the requirements for them.
MAIN STAGES OF FULL ANTI-CORROSION TREATMENT
Washing. The bottom of the car is washed with hot (60-80°C) water under pressure up to 60 atm on a lift. The fenders are removed. The best results are obtained with a three-stage wash. First, the main dirt is softened and knocked down with a jet, then the surfaces are washed with water with the addition of special detergents and degreasing additives and finally washed.
Drying. Modern anti-corrosion materials displace water from the surface, but for better adhesion to the coating, the machine should be dried. The car is blown with hot (up to 80°C) air for 15–20 minutes. in hidden cavities and wheel arches it is fed through hoses with nozzles.
Inspection and diagnostics. The condition of the bottom of the car is determined on the lift, with removed wheels and in good lighting. Hidden cavities are sometimes checked with an endoscope (borescope) with a 360° rotating lens. At the same time, not only the condition of the coating or the presence of corrosion is detected, but also mechanical damage (opened seams) of the body.
Some anti-corrosion preparations glow blue when exposed to ultraviolet radiation. Such a lamp is used to determine the type of previously applied composition or to check the quality of a new coating.
Application of drugs. Before processing in the car, they cover all the elements that can be stained with anticorrosive.
Hidden cavities can be accessed by drilling additional holes or through existing ones. technological holes and gaps. Processing should be carried out according to flow charts (schemes) developed for a given car model by its creators together with firms producing anticorrosives. The composition is applied by air spraying under a pressure of 6–8 atm. As the material is fed, it mixes with air, forming a mist in the cavity.
There is also an approach to the treatment of cavities, in which panels are first dismantled that impede access to a given volume, and then anticorrosive is applied in a targeted manner, without harming the devices installed in the cavity.
The thickness of the dried film is 40-60 microns.
on the bottom and wheel arches previously mechanically (for example, with a spatula) remove the exfoliated coating and loose rust. The thickness of the dried film is 250-300 microns. It is impractical to achieve greater thickness - the composition may peel off.
After being applied to the hidden cavities and on the bottom, the preparations gradually (about a day) “seize”. During this period, it is better to refrain from driving a car.
In addition, in a car with catalytic converter exhaust gases can be driven no earlier than three hours after treatment. The converter gets very hot during operation, and an anticorrosive agent that accidentally gets on it will burn out with the formation of smoke. Therefore, it takes time for the flammable solvent to evaporate from the fresh coating.
Paintwork. If necessary, for protection, the body is polished - the paint is cleaned from an oxide film and a damaged varnish layer. After treatment, you can not wash the car for a week.
WARRANTY OBLIGATIONS OF AUTO MANUFACTURERS FOR CORROSION RESISTANCE
Almost all automakers, when selling their cars in Russia, give three year warranty on the integrity of the paintwork and six / twelve years - on through corrosion. As a result, in the showrooms of official dealers, when selling a new car, the owner is not offered to carry out additional anti-corrosion treatment. However, in the operating instructions, many of them still recommend it, referring to the harsh operating conditions in Russia. Some dealers require the owner of the car to have the car inspected annually for defects in the paintwork that have formed during the year, and take measures to eliminate them. Missing an inspection will void the paintwork warranty. Thus, the concern for the corrosion resistance of the car is shifted to its owner.
CRITERIA FOR SELECTING AN ANTI-CORROSION TREATMENT SERVICE
As a rule, an anticorrosive center is chosen on the basis of recommendations from friends or on the basis of their own experience. good firm has indirect distinguishing features:
history, traditions, positive reputation, work experience and status of an official representative (direct supply of anti-corrosion compounds);
the opportunity to get acquainted with the list of work performed and technological maps of car processing;
certificates of training of specialists and attestation of the company;
a complete set of equipment for all types of processing;
diagnosing the state of the applied protective coating and determining its compatibility with the new anticorrosive agent;
a set of preparatory work before applying a protective coating;
conditions for cleaning, washing and drying the car;
competent answers of the staff to questions about the purpose of the materials used and their differences, about the essence of processing, etc.;
a guarantee for the performed anti-corrosion work, warranty and preventive maintenance.
To increase the reliability of the anti-corrosion protection of the car, you should choose materials designed to work in climatic conditions similar to the conditions in Russia.
When processing new cars, when an anti-corrosion compound is applied to a factory coating that has not yet been damaged, the most important is strict adherence to the technology for processing hidden cavities, taking into account the processing scheme this car. Particular attention should be paid to factory plastisol coatings on the bottom.
For cars with experience, competent preparatory work before applying a protective coating comes to the fore. The most modern anti-corrosion material will last a very short time and fall off.
For self-treatment of the car, you can use compounds sold in aerosol packages. They are intended for minor repairs corresponding anti-corrosion coating. In practice, full protection of the machine can only be ensured in an anti-corrosion center that has the status of an official representative of a company that produces anti-corrosion compounds.
