Car painting technologies are,probably, the most important part in carrying out its body repair. While the primer and the putty are hidden, it is the paint that becomes the real face of the machine and the evidence of the quality of all work. At present, there are several methods for applying the last layer. At the same time, one should not forget that only if the technology of car painting is clearly observed can a positive result be achieved.
Now, as a rule, twovarieties of paint - acrylic and metallic. The first of these is a colored pigment, consisting of two components. It is more simple to apply, but requires varnish coating in the future. As for the second type, the technology of painting the body of the car when using it implies the execution of works in two stages - first "base", and then "lacquer".
Определить, какой метод использовался для машины, it is possible by conducting a test. It consists in the fact that a small piece of material is wetted with a solvent, Then they should be rubbed in some inconspicuous place of the body. In the event that the paint appears on the rag, you can conclude that it is acrylic. If the material remains clean, then a varnish layer is applied from above.
Now three types of metallic paint are applied (withone, two or three layers). The first type in our time is extremely rare, since its use does not always lead to the high quality of the result. Most often applied two layers. As already noted above, the use of such a technology of painting a car is reduced to applying a base on the body, and then a varnish. On the ground in this case, the paint falls very well, and dries quickly. Moreover, all defects arising in the process are qualitatively eliminated during polishing. Three-layer paint is usually used in the case when the owner of the car has a desire to create on it any complex effects. Depending on the viewing angle, the color of the coatings on which it is applied may vary.
Technology of preparing a car for paintinglies in the fact that all the components of the body should first be putty, then covered with a primer. Those parts that do not need painting, it is desirable to glue the adhesive paper, and even better - generally dismantled. In no case do not forget about the degreasing and blowing of the painted parts, which is done with a napkin or anti-silicone liquid. Next, the composition is wiped dry and repeat blowing. In conclusion, it is recommended to treat the elements of the body with a dust-cleaning napkin, which will prevent the presence of small particles on them.
The base is diluted with a solvent and applied immediately.after the surfaces to be painted are pre-prepared. The temperature of the chamber and the brand of paint in this case should be chosen very carefully and fully match each other. When applying the first layer, spots and stripes are normal, because in the future they will all be smoothed out. The second coat of paint is applied after the first one becomes dull (this means that the solvent has evaporated). The base must be dried in natural conditions for about 30 minutes (depending on the manufacturer’s recommendations, this time may vary) after applying each new layer. It is impossible to use airflow for this, since there is a probability that small metal particles will not be immersed in the base correctly.
It should be noted that the fact thatit is undesirable to leave the car to dry for the whole night. The fact is that the varnish must be applied to the base exclusively in full compliance with the requirements of the manufacturer - after that period of time specified in the instructions. Otherwise, unpleasant consequences are not excluded, the worst of which may be the lack of adhesion.
Metallic car paint technologystipulates that the lacquer must be diluted with a fixer and solvent before applying to the body, based on the manufacturer’s instructions. In most cases, use two or three layers, each of which must necessarily be dried. Many experts check this with the touch of a finger in an inconspicuous place. If the varnish is not smeared, they apply the next layer, even though the surface is still sticky. Along with this, it is advisable to wait. When applying lacquer, be sure to ensure that there are no stains, since it will be almost impossible to remove them later. As a rule, this will require removing the layer and applying it in a new way.
Acrylic paint is applied in three layers.In this case, the former serves as the basis for the following and is the most subtle. The third layer of paint is slightly diluted and applied less diligently (compared to previous). It is possible to coat the surface with varnish at the end, but not necessarily. It will increase the color depth and slightly improve the quality of the coating. The most important thing in this case is to wait until the surface is completely dry and pre-treat it with fine sandpaper.
Acrylic paint technologyin many respects is similar to all the rest. The best result is achieved when the air temperature is about twenty degrees or more. These paints can be used for all types of cars. However, do not forget that it is better not to apply it to oil enamel. The fact is that these two types of paint interlock very badly.
Even the most careful motorist neverwill be able to save your car from accidental scratches, as well as fine gravel and sand that fly from under the wheels of cars. And that's not even considering corrosion. Before starting work on the elimination of these phenomena, it is necessary to carry out a thorough inspection of the machine, after which it will be decided which painting will be carried out - capital, partial or point. At the same time, it is recommended to pay attention to the bottom and pillars, because there is no point in updating the appearance of the car, which will soon need to be repaired.
DIY car painting technologyinvolves the execution of works in several stages. They are machine preparation, priming, puttying, grinding, applying paint, drying and polishing. The preparation stage in most cases takes about 90 percent of the time from the whole process. First you need to remove all the elements of the body that can interfere, then clean it and prime it. Sometimes at this stage there is a need for straightening and welding. Only after that the painting itself begins, during which, as a rule, three layers are applied. The main nuance is its protection against pollination. To do this, you can use paper or ordinary medical plaster.
According to the technology of painting your carhands, paint is applied to the body with a sprayer. Between the application of the first and second layer, it is necessary to sustain a pause of approximately five minutes. It should be noted that the last two layers sprayed more liquid paint (compared with the first).
Virtually all new painting technologiesThe car aims to accelerate this process. In this regard, in most modern workshops sprayers are used, due to which not only external but also internal parts are processed. The main advantage of such devices is the possibility of applying a uniform layer on which there are no drips and bubbles. The principle of their work is that a high pressure is created inside the apparatus, due to which the paint is converted into an aerosol. When fed from the nozzle, it does not mix with air, and therefore the technology was called "airless spray." Such units are best used for painting fairly large surfaces (for example, wings, roof, doors or hood).
Another common modernThe technology is pneumatic paint sprayers. They are distinguished by a relatively low speed of work, however, they make it easier to achieve a decorative painting of a car. Their key advantage is full control over the flow of paint. In this regard, the most appropriate is the use of such devices in those automotive workshops that specialize in processing small areas of body surfaces.
