FAQ - Frequently Asked Questions

What Are the Main Advantages of Using Heat-Resistant Coatings on Metal Surfaces? Heat-resistant coatings are specially designed to protect metal surfaces exposed to extreme temperatures, typically ranging from 200–600 °C and above. These coatings are highly resistant to thermal shocks, which can cause cracking or degradation of ordinary coatings. They are used on surfaces such as exhaust systems, boilers, ovens, furnaces, and other equipment exposed to intense heat. One of the key mechanisms that allow heat-resistant coatings to function effectively is the use of silicone resins and ceramic pigments, which resist degradation at high temperatures. While ordinary coatings may begin to break down or flake off at temperatures above 100 °C, heat-resistant coatings maintain their integrity even at much higher temperatures. Additionally, they protect metal surfaces from oxidation and corrosion, which are common in metals exposed to high heat and oxygen. Another advantage of these coatings is their resistance to the thermal expansion and contraction of the metal. Metals tend to expand when heated and contract when cooled, which can cause coatings to crack. However, heat-resistant coatings, thanks to their flexibility and resistance to temperature changes, can absorb this process without damage. Furthermore, these coatings offer high chemical resistance, meaning they can protect surfaces from aggressive chemicals and gases generated during high-temperature processes. Aesthetic value is another benefit of heat-resistant coatings. They ensure that metal surfaces remain glossy and protected against fading or dulling caused by exposure to high temperatures. These coatings also help extend the lifespan of metal components by preventing erosion and degradation, which can significantly reduce maintenance and replacement costs of damaged parts. Research in material science also shows that using heat-resistant coatings can improve the energy efficiency of thermal equipment, as these coatings can partially prevent heat loss from the surface. This not only has a positive impact on operating costs but also enhances the sustainability and environmental performance of the equipment. Overall, heat-resistant coatings are essential for protecting metals from thermal and chemical impacts, increasing their lifespan, and maintaining their functionality in extreme conditions.

How Do Spray Fillers Improve Surface Quality Before Applying Topcoat? Spray fillers play a key role in surface preparation before applying the topcoat, primarily due to their ability to fill minor surface imperfections, scratches, and other defects. These imperfections may result from mechanical damage, sanding irregularities, or other factors. The use of a filler ensures that the topcoat is applied to a smooth, even surface, which enhances the aesthetic quality of the final result. Spray fillers are typically based on acrylic or epoxy resins, known for their fast drying times and easy sandability. After applying the filler, it is essential to allow it to dry completely and then carefully sand the surface to remove any excess material, ensuring a smooth finish. This step is crucial for achieving a professional result, especially with glossy or metallic coatings where any surface irregularities are highly visible. Fillers also improve the adhesion of the topcoat by ensuring that the top layer of paint "bites" into the smoothed surface without forming air bubbles or poorly adhered spots. This is particularly important in applications subject to mechanical stress, such as automotive painting, where resistance to peeling is critical. In terms of durability, fillers provide additional protection to the substrate against moisture and chemicals, contributing to the overall longevity of the coating system. Additionally, spray fillers reduce the time required for surface repairs, as they are faster and easier to apply compared to traditional filling materials, which require mixing and application with a spatula. Therefore, using spray fillers is recommended whenever high-quality surface preparation is needed with minimal time and material costs. The result is a smooth, even, and durable surface ready for the application of the topcoat, enhancing the overall aesthetic and functional quality of the coating system.