PERSIAN FAM Company has formed a unit called technical consulting services that consumers can take before any action on the type of color choices, geographical and environmental conditions, type of surface, conditions of execution, conditions of equipping and future operation. Full business awareness. To make
The most important of these services are:
1 - Technical consulting services before purchasing any kind of cover
      Regarding the wide range of coatings, the contractors and consumers are obliged first to provide all the chemical and physical factors (environmental and geographical conditions - the type of surface to be used - the exploitation of the structure in different conditions - and the shading) To enable the company to be fully aware of the prescription of the type of coating and its production with the best quality. Therefore, in the absence of awareness of the above, it is not possible to produce the optimal coating that needs proper durability.
2- Consultancy services during execution on a variety of surfaces
Surface preparation for staining

    Cleaning the surface from rust and other contaminants such as grease, oil and dust before painting is very important. If the best color is used and the best method is used, but the preparation is not good, the color will disappear in a short time. Therefore, the most important methods of preparation are:
Types of Preparation Methods
3 - Surface preparation using SAND BLAST
4 - Shot Blast Surface Preparation (SHOT BLAST)

Now, we describe the surface preparation method by spraying sand with compressed air.

Sandblast has two important reasons:

A. Removing surface contamination
B. Roughness of the surface to improve adhesion of the primer

    The larger the size of the sand and the air pressure is above 7 bar. The blasting surface will be sharper and the adhesion will be more ideal. In this way, the compressed air compressor produces air with a hose to a sandblast. The Sand Blast Sandblast is placed in a controlled air direction and exits from the nozzle. If the nozzle is taken out to the metal surface, it will clean and shrink the surface. The surface of the metal must be inspected before the sand blast begins and the oil contaminations are cleaned with a thinner.

The following should be considered in Sandblast:

A - The compressed air should be completely dry and free of oil. If the compressed air is moist and contains oil, it will rust the surface again and its oil will reduce the adhesion of the primer.
B) The size of the sand should be between 0.3 and 3 millimeters. Smaller than this, it does not work much better, it takes away the output nozzle and also on the surface of the broken metal and the remainder of the lime on the surface, which reduces the adhesion and blistering of the primer.
C) The surface of blast sand should be clean and dust free with compact air.
D - The direction of the outlet of the blast nozzle relative to the metal surface should be angled at about 45 degrees. If it is vertical, it will break the sand on the surface. If the angle is desired, the sandblast roughness dramatically decreases.
Preparation by spraying abrasive particles
In this method, the oxide, rust, color, or any foreign matter is removed using abrasive particles based on the minimum requirements specified in this document. Level cleanliness is defined as SIS 055900 as follows:
A) Preparation grade SA 3: At this degree of preparation, the surface is cleaned up to the surface of the metal completely and all oxides, rust and external materials should be removed from the surface. The surface should then be cleaned with air suction, dry air compressor or brush. At the end of the cleaning operation, a uniform metal surface must be created.
B) SA 2 1/2 Preparation Degree: Oxides, rust and external materials should be removed and only a small percentage of them allowed to remain on the surface. Then the level as above should be cleaned.
C) Degree of preparation SA 2: Most oxides, rust and external materials should be removed and the surface should be cleaned as above.

Level Preparation Tips

1 - Preparation should be done in dry conditions. If the air temperature is around the dew point. Blasts blast quickly rings.
2 - Before examination, the sandblasting surface should be cleaned with compressed air. All corners and edges should be thoroughly inspected.
3 - If the surface of the sandblast is approved, the primer must be run promptly.
4 - If the prepared surface is exposed to rain, surface should be prepared again.
5 - If the surface roughness is very high, a thin layer of primer does not prevent rust, so a thick layer is required.
6 - The effects of sand fracturing on sandblast surface with wire brush and sand blade should be well cleaned to prevent blistering of the primer.
7. Sandblasting sand should be completely dry.
8. The sand should be of a broken and graded type and of silica type.
9 - The time between the completion of the sandblast and the implementation of the first layer of paint should be less than 4 hours.


Coverage (paint): Basically, color is a mixture that can meet our expectations of decorating and protecting the surface. Generally, an excellent mix of substances such as resin, pigment (PIGMENT), solvent (solvent) and additives (ADDITIVES) is obtained. The base of the paint is a resin. Resin has a major role. Creating an impermeable film on the surface is one of the most important tasks of the resin, it is one of the other tasks of adhesion resin to the surface. The cleaner the surface of the metal, the chemical and polar adhesion increases, and the higher the steel surface, the more resilient the adhesion of the resin will increase mechanically. One of the other duties of resin in colors is to resist corrosive agents. Pigments are responsible for the beauty and color of the color. It also increases the anti-corrosion properties of the resin, especially in the first layer coatings (PRIMER)
Color in industrial use is divided into three categories:
A. Primary layer or PRIMER
In the primer layer, pigments that have anti-corrosion properties are used. Zinc pigment (ZN) and lead pigment in the middle layer. Pigments act as a filler to form a thick film layer and prevent the formation of cracks and fractures of the film.
In the final layer, the seeds should be uniformly uniform so that the final layer is shiny and impervious. The final layer pigments must withstand the ultraviolet light of the UV Sun and do not change color.
Color mixing conditions
 1 - USERS MANUAL manufacturer's instructions on how to mix and type of solvent and its amount should be carefully observed.
 2. Multi-component colors must be mixed with the mixer.
 3. To mix zinc powder (ZN) and ethyl silicate resin, zinc powder should be added several times while the resin is stirring.
 4. Spray hose The primer for applying Zinc Silicate should not be too high to prevent primer deposition.
 5- In the event of instability of the air and the probability of rainfall, wind and storm, mixing of the paint should be avoided.
 6. All paint mixing tools should be thoroughly cleaned and thoroughly cleaned after work.

Air condition and temperature during color execution
A. In a very cold air (less than 3 ° C), a thin layer is likely to form on the surface. Therefore, staining in cold weather is prohibited.
B - in very wet weather (relative humidity is above 85%) and during stagnation rain is prohibited.
C - During the wind and storm the staining must be stopped.
D. During the paint application, the maximum surface temperature of the paint should be 60 degrees and the maximum ambient temperature should be 50 degrees centigrade.

The effect of conditions on the quality of color execution
 1 - If you run in a storm of light, the following happens.
A. Color levels that are not yet dried are contaminated with dust.
B - Dust occurs on the surfaces that are staining and cause the adhesion of the paint layer.
C) the dust enters the paint container and causes the spray nozzle to crash.
2 - staining in rainy weather does not adhere to the previous layer and is removed from the surface.

How to apply color
   Painting should be done by the tools offered by the color builder. When spray painting is recommended, a brush should be painted in the grooves, screws, bumps, edges and surfaces that are not in proper thickness to provide adequate protection in these areas. Paint brush before applying the paint by spraying.
Before painting, the paint contractor must provide the employer with suitable methods of painting and receive the approval.
Apply color without air
The application of paint should preferably be carried out using airless spray method and also fulfill the following conditions in applying this method:
The recommendations made by the manufacturer of the nozzle should be followed by the nozzle and pressure ratio.
The device used for airless spraying must be set up by the pressure gauge and the appropriate regulator for the service.
Separators and filters suitable for separating water and oil from the air should be used.
The colors in the spray container should be stirred continuously by a mechanical stirrer.
The spray device should be cleaned so that no dust, no paint, or any other external material should be deposited on the paint layer.
Any remaining solvent in the device must be completely discharged before applying the paint.
The color flow, pattern and spray pattern can be adjusted by changing the spray gun. The accuracy of the gun spindle must be carefully selected. For the correct application of the paint gun, a spray gun should be fitted with a suitable workpiece and spaced between 400-300 mm. This coloring operation is much faster than coloring with conventional and conventional sprays.

Apply paint by brush (brush)
To brush the brush, the brush should be sufficiently dipped in the paint, avoiding excess paint on the brush. The brush should be kept at a 45 degree angle to the work surface. The paint should be able to completely cover the surface and completely remove the previous color. The created layer should be uniform. Excessive pressure on the brush should be avoided. When the surface is completely covered with paint, in order to ensure uniformity of color, the perpendicular to the coloration direction should move the brush to the surface, and then the brush is pulled again with a very low pressure on the surface, so that the edges and grooves are perfectly Wiped out . At the highest levels, this last step should be done in a perpendicular direction. After finishing the brush should be cleaned with a suitable solvent.
  Coloring using rollers
Using a soft roller to paint large surfaces and flat surfaces or relatively smooth curved surfaces is a convenient and efficient method. Rollers are recommended to apply emulsion paints where the ultimate fineness and fineness are required. This method is only applicable to relatively large surfaces that can not be sprayed. The use of this method should be done according to the color guidelines and guidelines.
  Spray with air
The conventional spray painting method may be used for large internal or external surfaces of storage tanks or smaller equipment surfaces, such as pressure vessels, motors, drums, tanks and other items. When using this method, it should be noted that the adjacent surfaces of the coloration area are not contaminated by spray paint.
  Coloring certain levels
When painting, it is necessary that the thickness of the color in all sharp edges is equal to its thickness in other areas so that no corrosion or defect occurs in these areas. In the case of corners, grooves, rivets and rivets, these requirements are also necessary.
Fasteners that are placed on the ground after installation of steel pipes or cable holders and similar items should be covered with zinc or aluminum or before they are welded on them, the surface should be cleaned and then stained with primer. The steel may be applied to the abrasive particles after application and before the welding and welding process, and primer paints are applied to them. This action will prevent the creation and growth of rust. Removing bells on the surface after construction is very difficult.
Shipping method of colored parts
The drying time determines the color of the film.
 To be used for the movement, loading and unloading of painted parts, woven wire beads should be used in non-organic containers.
 The painted parts should be placed on wooden parts in all conditions.

Spot and paint repairs
In order to avoid duplication and repair of paint, all mechanical work, such as welding, etc., must be completed before sandblasting and paint finish.
Any damage to the paint should be repaired after installation. The repair steps are:
A. First, the damaged points are small in size. Its surface is equipped with a hand tool such as sandstone, pinch, wire brush and electric brush.
B. After finishing the surface preparation and confirming the inspector, a primer layer is applied immediately.
C. The next layer of paint is applied according to the project instructions and the color builder after drying the previous layer.

Disadvantages of the painted surface and its modification
Usually, when used in color, it is not necessary to condemn the color itself immediately, if there are other factors, some of which are:
A - The level of work is not ready before painting
B. To use weak techniques with inappropriate applications in execution
C - The film thickness is not suitable (very low or very high)
D - Inappropriate color for the desired condition
E) Execution of paint at inappropriate temperature and humidity
C) Wet the surface when performing the paint or high humidity during the run
H - surface contamination by oil, grease or waste materials that have not been cleaned before leveling.

Creating bubbles in the film are the colors produced to create a high-definition film. If the color components are mixed at high speed, the bubbles are held inside the colored solution, and the coloration on the wet surfaces creates a bubble.
Problems with drying time: Late drying can depend on the following factors:
A. In cold or humid conditions
B - The oil or grease existing on the contaminated surface will cause drying of the paint later.
C - If the film is too thick.
Fragility of color film: The main reason, the loss (softening) of the softener by evaporation
Breast-feeding, the downward movement of a dry-film film on a vertical surface, says that it may happen for the following reasons.
A - The thickness of the color is very high.
B - If the film becomes very slow.
C - too much diluted paint.
D - Color is executed in cold weather (evaporation is delayed)

Safety tips on applying colors
Materials to be used should be kept in a safe environment with proper ventilation. The location should be far from direct sunlight, fire and sparks. Until use, the door of the dishes should be completely closed. For toxic substances, install the appropriate warning sign.
The proposed safety instructions for color mixing are as follows:
Use eye protection glasses
Use protective gloves
Keep the head and face away from the color mixer chamber
Use a skin-protecting cream
Avoid spraying and spilling and inhaling vapors
Performing the mixing of all materials in place with air conditioning and away from flames and sparks
Use of mechanical stirrers at low speed
Avoid raising the temperature
The following should also be considered for the use of all coatings:
Knowledge of the material that is supposed to work with them
Read and follow the safety labels shown on the material label
Place in a ventilated place
Readiness to deal with fire, smoke and sparks and avoid smoking when working
Avoid breathing vapors or spraying materials
Use of skin protection cream and other protective equipment
Avoid eating and swallowing toxic substances
Wash hands thoroughly before eating
Replacing dusted clothes
Observe the principles of personal hygiene
3- Service registration certificate of type of cover for maintenance and registration
 Longevity Factors for Future Projects