Painting of forged products

Artistic forging surrounds us everywhere. But despite all its advantages, Forged Products have their drawbacks too. The main problem with forging is corrosion. The cause of corrosion destruction is usually processes occurring on the surface of the metal. Metal structures irreparable damage is caused, as a result of which there is a deterioration in appearance, a decrease in strength, up to the complete destruction of the product. Used for protection special paints designed to preserve appearance and structure artistic forging.

How to paint forged products correctly

Paint itself does not protect against corrosion. Primers applied immediately before painting have the protective functions we need. Primer compositions have good water-repellent characteristics and are firmly held on the metal surface. Their disadvantage is poor resistance to atmospheric and impact factors, and primers do not have the necessary aesthetic appearance. To extend the life of the protective coating and provide the desired appearance finished product, the metal is painted with special paints over the primer.

The whole process takes place in several stages:

− thoroughly remove rust from the surface of the product;

Degrease the surface of the product;

− apply a layer of primer to the surface of the product and give it time to dry;

− paint the products with special paint.

Of course, there are no primers or paints that can protect metal forever, and sooner or later the procedure will have to be repeated. Therefore, when carrying out painting work, you should choose the right type of primer and paint, Special attention pay for service life.

Composition of primers

The tasks of the primer are to prevent the corrosion process, prevent contact of the metal surface with moisture and ensure adhesion of the primer to the metal and decorative coating. To achieve these objectives, special corrosion inhibitors are included in the primers. IN Lately soils with targeted additives have appeared on the market. Manufacturers do not disclose their formula, but they assure that the service life is almost doubled and that such primers can be applied to rust up to 100 microns thick.

Types of paints

The most common paints for forged products are compositions based on acrylic base. They must be used together with special primers. Depending on the composition and manufacturer, the service life can be from 6 to 8 years. Manufacturers usually recommend using the same brand of paint and primer.

Recently, three-in-one paint types have become popular. This paint simultaneously contains a rust converter, a primer and decorative coating. The use of such paints significantly saves the time required to gradually apply all layers. This paint can be applied directly to the rust, and the process of cleaning the surface is reduced to removing the loose layer of rust.

Quick-drying paints allow the usually long process of painting artistic forging products to be carried out within 60-90 minutes. Minimum thickness such coating is 100 microns. Typically, such compositions last from 5 years, subject to application technology. Such products have one feature: within a few hours after painting, polymerization of the coating begins, and you can apply a second coat only after its completion. Sometimes this process can take almost two weeks, so carefully study how to apply the chosen paint.

Thanks to painting, you will not only keep your products undamaged, but will also be able to give them the necessary aesthetic appearance. The variety of types of paint offered will allow you to choose the desired color and shade, so that forged products will easily fit into any interior.

In our works we use blacksmith paints “Certa-Plast” and “Certa-Patina.

.Blacksmith paints"Certa-Plast" and "Certa-Patina" are intended for anti-corrosion protection and decorative finishing, including “antique” metal products, obtained by forging, stamping, casting from cast iron, steel, non-ferrous metals and their alloys (monuments, fireplaces, fences, doors, gates, parapets, lamps, lanterns, jewelry and other products of various shapes and sizes), operated in atmospheric conditions and indoors, including in conditions high humidity, temperature difference from -60°С to +700°С.

Most Popular color solutions blacksmith paints:
patina for gold, patina for silver, patina for bronze, patina for greenery.

Primer - enamel "Certa - Plast" for rust "3 in 1 primer and primer-enamel "Certa - Plast" with hammer effect represent a special paint and varnish material, which, according to the mechanism of protective action:

• forms an effective barrier protection against moisture and aggressive substances;
• transforms rust;
• prevents the development of under-film corrosion.

CERTA-PATINA with heat resistance up to 700°C
Designed for stoves, barbecues, fireplaces, fireplace accessories and other products exposed to heat, to give them exquisite decorativeness and increase their protective properties.

White

Nacre

Ivory

Silver

Graphite

Black

Green moss

Chocolate

Copper

Gold

Examples of patination

Green moss-gold

Green moss-frost

Ivory-Copper

Black-gothic green

Black-green

Black-gold and green

Black-gold

Black-copper and gothic green

Black-copper

Black-silver

White-gold

Green moss-gold

Green moss-frost

Green moss-copper

Ivory-Copper

After the choice of a forged product has been made, you should consider its future color and type of paint, which will determine not only the appearance of the forging, but also its service life. In addition, it is extremely important to follow the painting technology, as this affects the final result to an even greater extent than the type of paint material itself. To help perform this procedure as efficiently as possible, we will next look at how and with what to paint forged products.

Paint selection

Painting forged products, strictly speaking, like any other metal surfaces, is needed to protect the metal from corrosion. In addition, this allows you to give artistic forging specific color in order to successfully fit it into a particular interior.

Today there are many types of paint and several ways to apply it.

Therefore, before painting forged products, you should familiarize yourself with the basic requirements for paint, which include the following points:

• First of all, the paint must be intended for application to metal and have anti-corrosion properties that prevent the formation of rust. Anti-corrosion properties are especially important if the product will be exposed to atmospheric conditions.
• Mechanical resistance.
• Environmental friendliness– the paintwork must be non-toxic, especially if the product will be located indoors.
• Plastic– the paint should be easy to apply with your own hands and spread evenly on an uneven surface.

Advice! To give the product original look, often applied over the base color, which gives the surface an antique effect.

As for themselves paint coatings, which are suitable for the designated purpose, they can be divided into two types:

• Liquid;
• Powder.

Do-it-yourself painting of forged products involves the use of liquid paints, which include:

• Alkyd enamels;
• Acrylic compounds;
• Nitroenamels, etc.

Before giving preference to one or another composition, you need to familiarize yourself with its characteristics to make sure that the material is suitable for painting forged products in a particular case.

Painting forged products with liquid paints

Preparing the base

Before painting forged products, you need to do some preparatory work. It depends on them how much the forging will be protected from corrosion and how long it will last.

Surface preparation is performed in the following order:

• If the product is not new and has already been painted, then first of all you need to remove old layer paints. To do this, you can use sandpaper, construction hairdryer or special chemical composition, which is called a wash. The last option is the simplest and fastest, but at the same time, the most toxic.
• After the old coating is removed, the metal must be cleaned of rust. Ideally, the surface should be sandblasted. At home, you can use a wire brush or sandpaper.
• Then the stripped metal must be degreased; to do this, wipe the surface with a rag soaked in white spirit or another suitable composition.
• The final stage of preparation is applying a layer of soil to the surface. In fact, this procedure is practically no different from painting. This can be done with a spray or brush.

You need to stir well with a stick. It is applied in an even thin layer. Depending on the type of composition, you may need to perform the procedure in two passes.

Note! The primer for forging must have good anti-corrosion properties. Cold galvanizing is often used for these purposes.

Painting

You can begin further work after the primer layer has dried.

Painting instructions consist of several stages:

• You need to start work by preparing the paint. First of all, you need to stir it thoroughly and, if necessary, dilute it to obtain the desired consistency. The type of solvent depends on the type of paint.
• Then the composition is applied to the prepared surface. Good paint for forged products itself will not leave streaks, however, you need to make sure that it is applied in an even, thin layer, without drips. To paint hard-to-reach places, you can use a thin brush with a curved handle.
• To achieve the best effect from painting, after the first layer has dried, this operation must be repeated.
• To ensure the greatest durability of the coating and protection against mechanical damage, a layer of protective varnish can be applied to the paint.

The photo shows a forged product coated with powder paint.

Powder painting

This painting technology has many advantages, in particular - the price of the coating is lower, it is possible to achieve different decorative effects etc. However, to fulfill powder painting you will need special equipment.

In addition, this finishing method is allowed only if the product will not be subsequently subjected to welding. Otherwise, the coating will burn and cannot be restored.

Meaning this method consists in the fact that powder dye is applied to the surface, which is subsequently baked under high temperature, thereby forming a monolithic layer.

Conclusion

Painting forged products is practically no different from applying paint to any other metal surfaces, except that forging often has complex shapes, therefore the process of its processing is more painstaking.

Otherwise, the result depends on the choice of paint, surface preparation and adherence to the painting technology that we discussed above. Additional information information on this topic can be obtained from the video in this article.

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Paint used in artistic forging

Since artistic forging products are made from a steel profile, which tends to quickly become covered with rust, there is a need to apply a protective coating to it.

Forged products have certain features, namely:

• - they are made of ordinary steel, which does not form an oxide film and therefore rusts;
• - they are used and installed both outdoors and indoors;
• - they have a large number of connecting joints between parts;
• - they are often made from a metal rod that does not have a smooth surface.

These features impose their own requirements on the choice of paint.

1. The paint must contain anti-corrosion substances that prevent rust. If interior forging is practically not affected by atmospheric phenomena, then various canopies, weather vanes, gates, fences and other exterior forging experience all the delights of the weather.

2. The paint must be sufficiently resistant to physical impact - i.e. do not peel off, do not fray or be scratched at the slightest touch.

3. For products located outdoors, the paint must be resistant to a wide range of temperatures - not crack at temperatures below -40 and not spread at temperatures above +40.

4. The paint must be UV resistant and retain its color in any case.

5. The paint must be non-toxic both when drying and when dry. If this parameter is not very important for products located outdoors, then for forged products located at home, it is extremely important. The smell of paint causes an allergic reaction, dizziness and nausea in many people. In addition, painting of products most often occurs indoors, therefore, for the safety of workers, it must have minimal toxicity in liquid state. A

6. The paint should have good plasticity and be easy to apply. Many joints and welds must be well painted to avoid rust.

7. The paint should lie evenly on an uneven surface.
To add originality to an artistic forged product, “patina” is often applied over the base color - a special coloring substance to give forged products an antique effect. When applying “patina,” the base paint should not change its properties or lose color.

The process of painting artistic metal products comes down to several intermediate stages:

1. cleaning (the best is sandblasting),
2. degreasing,
3. application protective film(phosphating, galvanizing or nickel plating)
4. applying primer,
5. applying the base paint composition of the desired color.

Nowadays, many people reduce the process of painting products to two stages - stripping and applying paint. This became possible thanks to new dyeing technologies and new paint compositions. Some compositions allow you to apply paint even to a rusty surface, these include Hammerite alkyd-styrene paints.

As for the types of painting, they can be figuratively divided into 2 types:
- powder coating, which requires special cameras;
- painting with liquid paints, which are applied with conventional rollers, brushes or spray guns.

Powder coating requires baking the polymer in special ovens at high temperatures in the range of 148-180 degrees Celsius. And since the furnace has limited space, spraying bulky and bulky forged grates with polymer becomes problematic. But at the same time, a strong, even polymer layer is created on the forged product. This painting is good to use on large surfaces with a small number of joints and openwork elements, since otherwise the granules do not completely fill multi-joint units tightly, and the polymer film there will be thin and not very strong, which can lead to the protective coating rolling off in these places when installation

Liquid paints suitable for any surface, but their consumption is much higher, especially when painting large openwork through products (for example, a fence or “open” gate). Besides liquid paints more toxic. But at the same time, there is a guarantee that all joints and elements will be painted completely. In addition, some liquid paints, when hardened, also form a durable polymer film that is not inferior in quality to powder coating.

Conventionally, paints can be divided into the following:

1.Emulsion paints. This group includes all oil and alkyd paints.
Alkyd paints are paints based on organic solvents. The most common solvent for such paints is white spirit (purified kerosene). Alkyd paints withstand wet cleaning using traditional detergents. They also protect metal surfaces well from corrosion and wear, both indoors and outdoors. If you need to get a glossy finish, then again choose these paints. Application alkyd paints justified when it is necessary to convey the full saturation of the chosen color to the forged product. The paints of this group also have disadvantages. They take longer to dry than acrylic and are more toxic.
The best representatives of this family of paints are the Finnish paint Tikkurila.
Our company regularly uses a wide range of paints from this Finnish company.

2.Water-dispersed paints. Including acrylic paints.
The main advantage of such paints is low toxicity and fire safety.

The German company specially developed acrylic paint WS-Plast for painting metal surfaces. The resulting paint composition has excellent adhesion to many metal surfaces and solid polymers, due to which the service life of such coatings can reach 6-8 years or more. Most forging companies that produce premium forged products use this brand of paint to paint these products. If you need to get a matte surface, then you can’t find better acrylic paints. They say about WS-Plast acrylic paints that they highlight the skill of the blacksmith.

3.Nitro enamels.The main advantage of such paints is the speed of drying. But the disadvantages are also very significant - high toxicity and the need for ideal preparation of the metal surface before painting, which is very problematic for forging.

On Russian market Many companies have appeared offering blacksmith paint with various properties, therefore, knowing what criteria paint for artistic forging should have, choosing the right one will not be difficult.

Forged products that have already been used usually need to remove loose layers of rust and peeling paint, especially those that are in the open air. For such cleaning, select the most suitable tool:

• Wire wire brush
• Coarse sandpaper
• Grinder
• If there are a lot of metal products (fence, etc.), then it would be more rational to purchase a sandblasting machine. Sanding will save time and effort.

Now you need to brush off the dust and remaining sand and start degreasing.

Cleaning new forged products is different. Factory grease, grease and oil stains may remain on ferrous metal. They are washed off with a 5% solution of any SMS (synthetic detergent - washing powder) or removed with a solvent. Shiny and smooth metal is treated with sandpaper P-40 or higher, and dust is removed. Galvanized surfaces are washed with a stream of water, but aluminum and its alloys do not require preliminary cleaning - they are simply degreased immediately.

Methods for degreasing forged elements

• Hot water-soap solution (90°C) - to prevent the soap from curdling, first boil the water, then dissolve the grated laundry soap
• Caustic soda solution is also very hot
• Various solvents - acetone, isopropanol, 646, butyl acetate, etc. (before painting there should be no traces of solvent left on the metal)

When working with chemicals should be protected open areas body with gloves, masks, goggles and do not touch fat-free surfaces.

The traditional painting option includes several coating stages:

• Rust converter— after applying the composition it turns into a durable chemically neutral coating, enhancing the anti-corrosion effect of the primer
• Special primer composition— stops the formation of rust, isolates from moisture, gives high adhesion to metal and subsequent coating. Typically the primer has weak decorative properties and wear resistance. Although primer-enamels are produced “two in one” - corrosion protection plus an attractive appearance of the product. When choosing a primer, you should pay attention to the label: most of them are universal, but there are only for interior or only for exterior use.
• Paint for forged products(for metal) - a decorative coating that is applied over the primer layer and protects it from aggressive influences environment: atmospheric precipitation, sunlight, temperature changes. For enhanced protection and extending the service life of paints, sometimes special varnishes are applied as an additional layer.

Modern developments in the field paint and varnish materials allow you to combine the properties of all layers. For example, rust-converting substances are added to the soil, and anti-corrosion components are added to the paint. Thus, special blacksmith paints not only give forged products expressiveness on long years, - they have increased performance characteristics and corrosion protection.

Painting – adds sophistication to durability.

On video: painted wrought iron railings

Iron is susceptible to corrosion, so regular painting of your garage door is essential. How to properly prepare the surface of the gate, and what durable paint to choose? There are folk tricks that will help reduce costs and labor, as well as speed up the process of getting your garage door in order.

If the gate is new, then no special preparation is needed, just clean the surface from dust and coat it with a primer, which protects the metal from corrosion and ensures better adhesion of the paint to the metal.

How to paint a garage door if it is old and rusty?

Surface cleaning

There are several options for cleaning metal; the choice of method depends on the condition of the metal. If the metal is rusted to holes, then in this case only replacing the gate will help, not painting. We offer a choice of methods for preparing old metal for application of primer and paint.

Inexpensive and effective

Budget-friendly but tedious method. The following tools will be required:

• water spray bottle
• metal and regular hard brushes;
• sandpaper (number 60 or 80, depending on the layer of rust);
• "Galosh" gasoline - should be used as a solvent for residues old paint, it is better than white spirit;
• rags.

The cleaning process may take a full day, but the costs are minimal. The sequence of actions is as follows:

• thoroughly wash the gate and remove dust and dirt with a stiff brush;
• after washing, the metal must be completely dry;
• We clean off old paint that is peeling off with a wire brush;
• all uneven layers of the old coating that remain should be cleaned with sandpaper;
• After stripping, it is necessary to degrease the metal with gasoline.

Do not forget that it is necessary to clean not only the gates from rust, but also the fastenings and the welded frame that is built into the walls. Often rust from cold bridges quickly spreads from metal elements, embedded in the walls over the entire surface of the gate.

Mechanized cleaning of metal from rust

Before you paint your garage door, you can strip the metal more thoroughly. the easy way– we use simple tools:

• a screwdriver and a brush attachment do an excellent job of removing dirt and paint residues, but the battery will run low very quickly, and it will be problematic to use the tool again;
• orbital Sander– a good alternative to brush and sandpaper and is relatively inexpensive (up to 2000 rubles);
• Bulgarian ( low power) with a metal brush attachment. A soft version of the attachment for the grinder; for old metal and paint – brass brush attachments; for heavily soiled surfaces – brushes with intertwined threads.

Important. When working with an angle grinder, sparks may appear and there may be a strong release of tiny particles of paint, so we only work with a mask and thick gloves.

The most expensive, but reliable option for cleaning paint is sandblasting. To do this you will have to remove the gate. After sandblasting, specialized workshops offer to apply a layer of paint in a special bathroom. The strength and durability of this upgrade is guaranteed for 6 years, even under the most difficult weather conditions.

Chemical cleaning

The option is controversial, since after applying solvent to old paint and rust, the surfaces should still be cleaned of the old softened coating. Many users complain that after applying the anti-rust agent and painting the garage doors, they peeled off after three months.

Not surprising. Having softened the old coating layer, they applied a new one. Therefore, after some time they flew around the two layers together, because adhesion was not achieved at all.

Most the best option for loosening rust and how to paint garage doors - Hammerite metal paint; there are also cheaper domestic analogues. But, before application, the flaking remnants of the old coating still need to be cleaned and the surface degreased.

If the gate is new and still covered with grease, then you must first remove the layer of grease with white spirit, then rinse with acetone. It’s easy to check the quality of degreasing - apply a sheet of thin paper to the surface - if not grease stain, then you can paint it.

Rust neutralizer

Advice. Be sure to sand all glossy and smooth parts of the gate so that the surface becomes rough, then the adhesion of the paint to the metal will be more reliable and stronger.

Rules for painting and applying a chemical remover of old paint and rust, before the final coating:

• Apply the reagent to the gate surface that has been mechanically cleaned with a brush. Gel washes are better and more effective, as they have higher coverage;
• cover the surface with polyethylene - this will speed up the process of dissolving the paint;
• wait about half an hour (you need to follow the instructions, which indicate the holding time of the wash);
• Use a spatula to remove the swollen, softened old coating;
• sometimes it is necessary to reuse the remover;
• before painting the cleaned Garage Doors you need to degrease the metal with kerosene and apply a layer of anti-rust primer.

It is easier to remove powder paint from a metal surface. In this case, special detergents based on surfactants and mineral reagents.

The surface has been cleaned, now you need to choose the right good material for painting.

Choosing paint and primer for garage doors

Pigments that affect rust.

Garage door paint must meet certain requirements:

• good paint coverage;
• enhanced adhesion on metal surfaces;
• should not contain components that oxidize the metal;
• necessary high stability resistant to moisture and good water-repellent characteristics;
• the elasticity indicator must correspond to metal paints so as not to crack at high temperatures;
• thermal range of use for painting – frost resistance and heat resistance;
• resistance to aggressive chemicals– gasoline, solvents and technical oils;
• high resistance to impacts and mechanical wear.

Which garage door paint ideally matches the characteristics described above:

• silicone enamel – high strength and elasticity of the paint, with excellent resistance to moisture and a long service life. These garage door paints have excellent adhesion to metal and even coverage. All organosilicon enamels have anti-corrosion properties.

Advice. This paint can be used to paint garage doors that are constantly exposed to direct sunlight, especially in the southern regions of the country. The coating can withstand temperatures up to 600 degrees without changing color or durability.

• alkyd enamel – high elasticity and durability, suitable for interior and exterior finishing, big choice colors. Alkyd-urethane enamel - reliable a budget option paints for any garage doors;
• hammer paint – resistant to corrosion, you don’t have to clean the surface to perfection, no need to prime, excellent dirt-repellent effect. It is better to apply from a spray gun under pressure;
• Acrylic enamel is an ideal, easy-to-use solution. Best paint today, can be used for any garage door. It has all the necessary characteristics - it can withstand sudden changes in temperature, is not afraid of moisture and aggressive substances, is resistant to any atmospheric phenomena and high temperatures. The color palette, although small, is rich and deep. The only negative is the high price.

Important. When choosing what kind of paint to coat your gates with, avoid oil paints; they will crack very quickly.

For metal surfaces, craftsmen advise using fire-retardant coatings “Polistil” and electrically conductive dyes from “ZINGA”. These are special paints intended for car repair shops and other special conditions garage operation.

Brands of popular domestic and imported metal paints

• primer-enamel “SPETSNAZ XV-0278” Yaroslavl paints, on rusty surfaces;
• hammer Hammerite, dark brown color, should dry and polymerize for three weeks, then I cover the second layer;
• "Alpina Direkt auf Rost" can be applied to rust. Must be completely hardened to coat a second time. Color - white, black and silver;
• you can choose Kuzbass varnish for metal surfaces, one layer is quite enough;
• the entire line of materials for metal "Smile" - beautiful view and resistance to high humidity;
• “Dufa” hammer, for metal, can be applied with a brush, the appearance is excellent, but it must dry for two days before painting again.

When choosing paint, a lot depends on the condition of the gate and, of course, financial capabilities. Some people simply dilute powdered silver and cover it over the most inexpensive primer, but it looks like a very expensive elite coating.

Primer

We offer several interesting, proven primer options that must be applied before painting the garage door:

• ship red lead - a reliable and inexpensive solution;
• silver – it is used when priming the car body earlier. Gives a metallic and pearlescent tint to any paint. It’s cheaper and better to choose a simple option - buy aluminum powder separately and dilute it with drying oil. Coating - in one thin layer;
• phosphating primer VL-02;
• use metal lead;
• primer for metal GF-021.

We prime only on a previously cleaned and degreased dry metal surface.

Color selection

The color of the gate depends only on the preferences of the garage owner as to what paint to use. But, it is necessary to take into account that dark colors attract heat from the sun, and light ones reflect it. The most popular colors are dark green, brick, light blue and burgundy.

Sequence of work

Painting garage doors - necessary tools:

• spray gun - the most convenient option, allows you to apply the coating in an even layer, without drips, reduces paint consumption;
• roller – leaves stripes that need to be rolled several times;
• tassel – worst solution When applying paint, there will always be drips and streaks. Consumption doubles;
• respirator and gloves.

How to paint a garage door - we proceed sequentially:

• We seal all surfaces that should not be touched by paint. masking tape, regular tape will do;
• We start all paint and primer applications from the top, moving downwards. This will eliminate drips and sagging;
• so that the transitions are not visible, we overlap one parallel layer with another. This will ensure uniform coloring, without sharp color transitions and shades;
• Now you need to wait until the coating layer is completely dry and carefully inspect the surface. There are always areas that were missed, we paint them again;
• All hard to reach places– we paint hinges, grooves, latches with a thin contour brush so that there are no pieces of exposed metal left. Such surfaces provoke the rapid spread of rust;
• Any paint takes 24 hours to dry;
• We apply the second layer only after the first has completely dried, not before. Otherwise, the coating will quickly bubble and crack.

Advice. There is no need to apply more layers of paint than required, as excess weight coating reduces durability and strength. Two layers is quite enough.

Temperature

It doesn’t matter what you paint your garage door with, but the temperature and weather in which you will do the work are very important. Best temperature regime from ten to twenty degrees Celsius in calm weather.

It is advisable that at the time of work there is no direct sunlight, which heats the metal very quickly. If you do not pay attention to the temperature, then unpleasant results can occur:

• rapid swelling of the coating, as adhesion on heated metal decreases;
• the color will be uneven and dull;
• There will definitely be drips and sagging.

Ideal time - overcast and temperature +12 - +15 degrees.

By choosing the right coating option and following the entire sequence of work, it is quite possible to inexpensively and beautifully paint the garage door yourself. The basic rule is that you cannot paint over old peeling coatings or rust; it is contraindicated to use oil-based paints. Be sure to prime.