Painting of forged products

What to protect? Wrought iron surrounds us everywhere. It's all sorts of fences (eg, balconies and stairs), fences, gates and garden gates, window grates it, without which the unthinkable is now no city apartment, located on the first floor, much less a country house. All of them are prone to corrosion, which was, is and will be until we use metals. It causes irreparable damage to structures, affects the appearance, reduces the strength and might even completely destroyed. To protect the metal from corrosion using special paints. Cause corrosion are most likely to electrochemical processes occurring on the metal surface. Water entering here in the rain or condensing from the air at lower temperatures, is an indispensable party to such processes. How to protect? All priming compositions have high adhesion and firmly held on the painted surface. The drawback is that they all differ a low weather-, impact-and abrasion resistance, and have a low decorative properties, and therefore they must be applied on top of an appropriate coating. It should be remembered that the corrosion resistance typically has just primer, and the coating is intended to maximize its life. It is clear that eternal compositions have not yet invented, and sooner or later any of them be destroyed, and then again begin the process of corrosion. Therefore, the choice should be preferred coatings, longer life, longer than he is, the lower operating costs. Order of operations on the device of corrosion protection by staining the surface of forged products is as follows: 1. Clean off the rust (with metal brushes and abrasive paper). 2. Apply a coat of forged products. 3. Apply ornamental (decorative and protective) coating. 4. Protect the painted surface with a special compound. How is corrosion? Perhaps the most prevalent in the construction of the surface electrochemical corrosion occurring in aqueous solutions of salts, acids and alkalis, electrolytes. On the metal surface, there are always areas which have different electrochemical activity - the so-called anode and cathode. For example, in steel anode is iron itself, and the role of the cathode can serve a variety of impurities (carbon, iron carbides, sulfur it.p.), present in it. The anode and cathode form a galvanic couple. Electrolyte can also be a condensation of moisture from the air, which was dissolved CO2 from the same air. At anodic sites iron cations Fe2 + pass into the electrolyte solution. At cathodic sites by restoration of oxygen dissolved in the electrolyte to form hydroxyl groups, OH. Fe2 + cations to the anions OH-form iron hydroxide Fe (OH) 2, which is oxidized to poorly soluble compounds Fe (OH) 3 red-brown color. Its something we call rust. Paints for forged products in this case under the forged products means any structure made of metal, collected one way or another from separate parts: fences, gates, canopies, stair and balcony railings it.d. Their surface is pre-primed and then painted. Here we should use the primer and paint as a pair. For example, in the range of materials SADOLIN for lattices proposed alkyd solvent-based Master Base paired with Master paint on the same basis. Paint the metal surfaces by special structures is necessary not only to protect against corrosion. At the same artistic blacksmithing can be given exactly the color or shade that best fits into this interior. It is worth to highlight the so-called forged paint WS-Plast, which offers a wide range WEIGEL + SCHMIDT LACKCHEMIE (Germany). They are produced in acrylic binder-life cover up to 6-8 years. Apply the paint is allowed on any surface, including previously painted (it is recommended to do a trial vykrasku). Consumption is on average 125g per 1m2. The same firm designed the composition of WS-Patina with patina effect that simulates the effect of gold, silver and copper plating. Another unusual cover-Zinga, manufactured by Belgian company ZingaMetall. A single component, ready-to-use product to a solvent which includes electrolytic zinc powder. Zinga forms a thin film that provides both mechanical and electrochemical (with a sacrificial anode) corrosion protection of ferrous metals. Terms of service coverage, according to the manufacturer, is 10-50 years, depending on thickness. Paint "three in one". Rust converter, primer and decorative coating in a single bank. Such compositions can be applied directly to rust (in preparation surface is recommended to clean off only its soft coat). For a long time, thanks to advertising domestic consumers believed that produces such paints exclusively British firm HAMMERITE. But in reality it is not. Just for this production HAMMERITE basic, but for others, one of the many kinds of paint produced by them, so they especially do not advertise it. In addition, recently appeared quite a lot of producers, primarily domestic, who started as HAMMERITE, specialize in the compositions of rust. In general, competition in this market there, and even what it is. Import compositions. Perhaps the most famous paint company Hammerite. Thanks bystroisparyayuschimsya solvents painted their products smithcraft dries in just 60-90min. Thus, the work, which includes three operations and is usually performed in two or three days, it became possible to accomplish in one day. The thickness of the final cover must be at least 100mkm. Distressed surfaces (stainless steel, zinc), primers Special Matals Primer. According to the manufacturer, the life cover subject to application technology is at least 5 years. Paint is offered with three textures: hammer, smooth, semi. There is a Hammerite product is one issue to be taken into account when painting in several layers. After 8h begins curing coatings, and impose a new layer, you can only after this process is completed - two weeks! Domestic products. Gradually gaining popularity among local consumers and the paint company's "NOVA". This anti-corrosion enamel Novax alkyd based and two-component "Novaks, intended for articles which are operated in a wet corrosive environments. The main objective of the primer-primer to stop the corrosion process, to isolate the surface of forged products from contact with moisture and soil to ensure good adhesion to metal, as well as the subsequent decorative pokrytiem.Dlya order to achieve this, manufacturers are included in the soil so-called inhibitors (inhibitors) corrosion . Some companies also add substance, chemically convert rust. What exactly is added to one or another ground and what is the mechanism of protective action, manufacturers are not reported. However, at the bank, for example in the latter case, there is an inscription: "Contains a part of corrosion inhibitors and special additives that allow it to put on heavy rust thickness to 100 microns. The assurance of the manufacturers, these compounds allow at least two times to extend the life inflicted on their surface decorative anticorrosion paint.