Useful info

The objectives of standards include fostering industrial development, enhancing safety and living standards, safeguarding consumers, and facilitating both domestic and international trade.

Standards serve as recommendations, but in some cases, officials and authorities may reference them in their orders and directives, rendering them obligatory. These mandatory standards, known as service or conciliatory standards, are developed by the Finnish Standardization Association (FSA) and its industry institutions. When creating standards, priority is given to ensuring their alignment with modern European standards (EN) and international ISO standards.

Historically, most anticorrosive painting standards have been national, applicable only within their respective countries. However, with the formation of the internal market by the member states of the European Union, the objective of facilitating the free movement of goods and services has become paramount. To achieve this, the EU member states must harmonize various technical standards, ensuring consistency and compatibility across borders.

The ISO 12944-7 standard outlines methods for painting, painting work, and quality control, superseding the SFS 4959 and SFS 4960 standards. Painting processes present challenges in quality assessment solely through final inspection. Therefore, it's essential to direct and monitor all factors influencing the painting outcome throughout the work execution. Professional skills of the personnel take precedence among these factors.

Coatings are applied to surfaces through a variety of methods, including brush application, roller application, spray painting, dipping, watering, filling machines, and rolling. When selecting a painting method, several factors should be considered:

• Coating application location
• Object Characteristics: Consider the shape, size, and quantity of objects to be painted, as well as the pace of painting.
• Type of Paint
• Number of Colors
• Safety and Environmental Concerns

Preparatory work and painting should be conducted under conditions outlined in the painting works description or similar conditions as specified in standards. The conditions for preparatory processing, painting, or paint drying should not deviate from the boundary temperatures of the air and surface as specified in the supplier's instructions. If necessary, work should be adjusted or suspended until the required conditions are met.

Only paints and thinners specified in the coatings specification should be utilized, and an adequate supply of these materials should be maintained.

It is crucial to store paints and thinners properly, ensuring that the packaging is in good condition. Factory packages should be securely closed, with stickers and labels easily legible. When storing paint, adhere to safety instructions on the factory label, comply with storage condition requirements, and observe storage periods. Ideally, store paint and varnish products in a room with a consistently cool temperature.

The durability of paint is inherently limited, as it is subjected to various environmental factors such as weather conditions, humidity, and aggressive gases, which deteriorate the paint surface over time. Painted metal surfaces can experience lime formation, cracks, blisters, rust, and flaking paint.

The ISO 4628 standard establishes general principles for classifying the quantity and size of painted surfaces requiring repair. Additionally, the standard includes visual references, such as photos, to help determine the degree of rusting and swelling on the surface.

During repair painting, the same types of paints are typically used as in the original painting, unless there are specific reasons such as the poor stability of the original paint, painting conditions, or other factors that necessitate a change in paint type.

When setting up a workplace, adhere to the following guidelines:

1. Minimize unnecessary movement and restrict access to outsiders at workstations.

2. Simplify workplace cleanliness by utilizing replaceable protective paper and similar coatings.

3. Ensure adequate ventilation, as it is crucial for safety in paint shops and other fixed painting locations. In addition to general ventilation, consider implementing properly planned local exhaust hoods.

4. Provide necessary washing facilities, including cleaning agents, skin creams, and eye cleansers, in addition to standard accessories.

Corrosive System:

The corrosive system comprises one or more metal components and all environmental factors that contribute to their degradation.

Corrosion Damage:

Corrosion damage refers to alterations within a corrosive system induced by corrosion, which are detrimental to the material, its surroundings, and the associated technical system.

Anticorrosive Coating:

Anticorrosive coating safeguards metal surfaces through the application of specialized paint designed to inhibit corrosion.

Water vapor is a component of the air, with its content varying significantly depending on the climatic region. Higher temperatures allow the air to hold more moisture, while lower temperatures cause excess moisture to condense on surfaces. As temperatures rise, the evaporation of water from surfaces increases, leading to a higher absolute water content in the air. However, for practical purposes, relative humidity values are typically used instead of absolute values. Relative humidity indicates the likelihood of excess moisture condensing on surfaces, providing insight into the potential risk of surface moisture accumulation.

Painting with a brush offers several advantages, including the simplicity of the method, high adhesion of the resulting coating to the substrate, and ease of processing small products and areas of the surface. When using a brush, the paint is worked into small pores and depressions on the surface being painted. Additionally, remnants of dust, moisture, and other contaminants on the surface are displaced by paint particles, ensuring good contact with the liquid film and the metal.

The drying degree of each coating layer is monitored to determine when a subsequent layer can be applied. This can be controlled using methods specified in the ISO 1517 standard or by tactile methods (touching with fingers). The "drying to the touch" indicator is commonly used for this purpose.

The number of coating layers is controlled visually and must not be less than specified in the technological documentation. To facilitate this control, each layer of the coating system should be of a different color or shade.

Typically, work to eliminate surface defects (such as burrs, sharp edges, and welding splashes) is performed during the manufacturing of structures before cleaning begins. Defects are detected by:

• Visual inspection, using a knife or spatula, and by touch
• Unless specified otherwise, edges should feel smooth and free of irregularities
• Freshly rolled edges are usually in good condition

Stratifications form during the rolling process, creating subsurface cracks filled with rolling scale and dirt. While paint cannot penetrate these areas, water eventually does, leading to premature corrosion. Delaminations can occur even on well-rolled sheets but are more common in poorly rolled steel. To address this, the stratifications must be cleaned down to the base, and if necessary, welded in the future.

Mechanized cleaning is performed using various tools such as rotating wire brushes, machines with abrasive belts, abrasive grindstones, stripping hammers with electric or pneumatic drives, needle guns, and polishing wheels.

Mechanized Tools for Surface Preparation:

• Percussion Cleaning Instruments
• Rotating Cleaning Tools
• Rotating Percussion Cleaning Tools

Areas of the surface that are inaccessible to these tools must be prepared manually. Cleaning with mechanized tools is more efficient and productive than manual cleaning.

Risks Associated with the Application of Coatings:

• Risk of Respiratory Tract Diseases: Inhalation of fumes and particles from the coating materials.
• Risk of Musculoskeletal Diseases: Strain from repetitive motions and prolonged physical activity.
• Risk of Falls from Heights: When applying coatings at elevated positions.
• Risk of Burns: Due to potential explosions or fires during the coating process.

To mitigate these risks, workers must be provided with and use appropriate personal protective equipment (PPE) when working with hazardous and harmful production factors.

The surface, although appearing smooth with evenly applied paint, lacks a bright shine due to microscopic roughness. This can be avoided by using only recommended primers. For a polished finish, ensure that paint is not applied to under-dried primer. The substrate must be treated with an abrasive of the appropriate gradation, and only the recommended hardener, solvent, and mixing proportions should be used.

Types of Corrosion

• Chemical Corrosion: This process involves the simultaneous oxidation of the metal and reduction of the oxidizing component of the medium, occurring in a single act.
• Electrochemical Corrosion: This type of corrosion results from the electrochemical interaction between metals and an electrolytically conductive medium. In this process, the ionization of metal atoms and the reduction of the oxidative component do not occur simultaneously. The rates of these reactions depend on the electrode potential of the metal.
• Biological Corrosion: This occurs when metal corrosion in seawater is accelerated by the fouling of surfaces by marine organisms.
• Electrocorrosion: This is characterized by increased corrosion due to anodic polarization caused by an external electric field, such as during welding operations in water or the presence of stray currents in a water area.

Anticorrosive Coatings Application

The AKRUS^® trademark specializes in providing high-quality anti-corrosion coating services. We produce industrial paint and varnish materials designed to guard against corrosion, fires, extreme temperatures, moisture, and aggressive chemicals. Our expertise extends to various sectors including protective, civil, infrastructure, and road construction, bridge building, shipbuilding, and diverse protective structures.

The Importance of Anti-Corrosion Treatment

Without anticorrosive coatings, industrial structures, technological facilities, pipelines, equipment, and even household items are vulnerable to harmful effects from sunlight, solar radiation, air oxygen, rain, and snow. Atmospheric oxygen and moisture deteriorate metals, concrete, and other mineral building materials, while temperature fluctuations and UV light accelerate corrosion.

Corrosion weakens materials, leading to potential structural collapses, pipeline ruptures, leaks, and equipment failures, resulting in financial losses, deteriorating living conditions, and safety hazards. Anticorrosive coatings address these issues by preventing oxidation and maintaining the integrity of metals. These coatings also prevent sediment build-up in containers, preserving flow capacity and extending the lifespan of pipelines and machinery.

Moisture penetration into concrete and other mineral materials can cause freeze-thaw cycles, leading to cracks and gradual degradation. Anticorrosive compounds mitigate these effects, ensuring the durability and longevity of structures.

Corrosion Protection Benefits

• Reduced Maintenance Frequency: Minimize the need for frequent maintenance.
• Cost Savings: Eliminate expenses related to repairs, restoration, and equipment replacement.
• Enhanced Security:Improve the safety of structures and systems.
• Aesthetic Improvements: Maintain an attractive appearance of surfaces.

Overall, the service life of structures, pipelines, equipment, and surfaces is significantly extended.

Our Products and Services

The AKRUS^® trademark develops and customizes protective compounds to meet specific requirements. We also offer ready-made formulations suitable for extreme operating conditions. Our professional application of anticorrosive coatings utilizes specialized equipment and adheres to GOST paint and varnish standards, as well as customer specifications.

Our comprehensive service includes:

• Inspection and preparation of objects to be treated.
• Application of primers and finishing coatings.
• Quality control throughout the process.

Advantages of Partnering with Us

Our customers benefit from:

• Durable Materials: Paint and varnish materials with anticorrosive and heat-resistant properties, lasting up to 20 years.
• Color Options:A wide variety of color solutions.
• End-to-End Support: Full support from order placement to production and application of protective compounds.
• Standards Compliance: Adherence to all paint and varnish standards.
• Quality Assurance: Guarantee of quality, adherence to deadlines, and accountability.

Our reliability is trusted by major corporations such as PJSC Gazprom, PJSC Transneft, PJSC Lukoil, PJSC Tatneft, NK Rosneft, and HK THK-BP. Our advanced production facilities, development and control laboratories, and technological warehouses ensure our anti-corrosion coatings are genuinely dependable.