Industrial painting: types and methods

Industrial painting is a key process for protecting and improving the performance of components and structures in a wide range of industries. Of the various methods used, brush painting, flow painting, dip painting, spraying and powder coating are among the most popular and effective techniques. In this article, we will examine each of these methods in detail, analysing their principles, typical applications and advantages in the field of industrial painting.

Industrial painting: Brush painting

Brush painting is one of the most traditional and widely used methods in industrial painting. This method involves the application of the paint using a brush or spray gun, offering a high degree of precision and control during the coating process. Brush painting is particularly suitable for applications on uneven surfaces or for detailed work that requires a targeted application of the coating. Prior to application, it is important to properly prepare the surface of the material, removing any contaminants and ensuring a clean, smooth surface. This process may include cleaning, degreasing and sanding to improve the adhesion and quality of the coating. Brush painting offers numerous advantages, including precision, flexibility, economy and versatility. This industrial painting method allows a high degree of control during coating application, making it suitable for a wide range of materials and surfaces.

Industrial coatings: Flow painting

Flow coating is a fundamental process in industrial painting, used to apply uniform, protective coatings to a wide variety of materials and components. This method, also known as liquid painting or spray painting, involves applying liquid paint to the surface of the material using a special gun or spray device.

Once the surface has been cleaned and degreased, the liquid paint is atomised into small droplets and sprayed onto the surface of the material with controlled pressure, ensuring even distribution and complete coverage. After the paint is applied, the material is left to dry and harden. Depending on the type of paint used and the environmental conditions, this process can take time and can be facilitated by using specialised equipment such as ovens or drying systems.

Once the paint is completely dry and cured, the material can be subjected to additional finishing processes, such as sanding, polishing or application of additional protective layers. Flow coating offers several advantages, including versatility in application on different materials, uniformity of the coating, adaptability to specific project requirements and efficiency in large-scale production.

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Industrial painters: dip coating

Dip painting is an essential process in industrial painting, widely used to apply protective coatings to components and parts of various shapes and sizes. This method involves immersing the object to be painted in a tank containing liquid paint. During immersion, the paint adheres to the surface of the material due to the surface tension and viscosity of the liquid.

Before immersion, it is essential to prepare the material properly, removing any impurities and ensuring a clean and even surface. Once the material has been prepared, it is dipped into the vat of liquid paint. The immersion speed and dwell time depend on the specifications of the coating required and the type of material to be painted. After dipping, the object is slowly lifted from the tank, allowing the excess paint to drain off and form an even layer on the surface. Subsequently, the material is left to dry and harden. Depending on the type of paint used and the environmental conditions, this process can take time and can be facilitated by using drying systems or ovens.

Once drying is complete, the material can be subjected to additional finishing processes, such as sanding, polishing or application of additional protective layers. It is also essential to conduct quality checks to ensure that the coating meets the required standards in terms of adhesion, strength and aesthetic appearance. Industrial dip coating offers several advantages, including the uniformity of the coating on complex surfaces, the ability to coat parts of various sizes at the same time, and the reduction of operating costs compared to other coating methods.

Industrial painting: Paint spraying

Industrial spraying is an advanced method used in the paint industry to apply protective coatings to large components and structures. This process involves the use of specialised equipment to spray liquid paint directly onto the surface of the material to be coated, simulating the effect of rain.

Once the material has been cleaned and contaminants have been removed, it is placed inside a specially designed spraying chamber. Inside this chamber, liquid paint is sprayed over the entire surface of the material using a series of nozzles or spraying devices. During the spraying process, the paint falls evenly onto the surface of the material, creating a continuous, homogenous protective layer. The pressure and speed of the spray can be adjusted to ensure an even distribution of the paint on all parts of the surface. Industrial spraying offers several advantages, including the ability to coat large areas efficiently, the uniformity of the coating on complex surfaces and the reduction of operating costs compared to other coating methods.

Industrial painting: Powder coating

Powder coating is an industrial painting technique widely used to protect and decorate components and structures in various industries. This process involves the application of a powder coating to the surface of the material to be coated, followed by a thermal curing process that melts the powder, creating a solid, durable coating.

Industrial powder coating is applied using a special electrostatic gun, which sprays the electrostatically charged powder onto the surface of the material, ensuring even distribution and effective adhesion. Next, the material is transferred to a high-temperature oven for the thermal curing process. During this phase, the powder melts and fuses, forming a continuous, uniform coating on the surface of the material, ensuring corrosion resistance and an aesthetic finish. The advantages of powder coating include high corrosion resistance, a wide choice of available colours and finishes, and the efficiency and sustainability of the process, which reduces material waste and environmental impact.

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Industrial painting methods for applying ATP products

ATP products, including protective coatings, Stop-Off metal surface coatings, water-based forge lubricants and Boron Nitride coatings, can be applied using various industrial painting methods: brush, spray, dip, and flow coating.

If you need further information about our metal protection products, please contact us by phone or email. We are always available to resolve your doubts or advise you on the most suitable product for your needs!