Prefabricated House Painting

The painting of prefabricated houses requires selecting appropriate methods and techniques based on different types and needs. The following introduces three aspects: overall mobile painting booths, painting techniques for the roofs of prefabricated panel houses, and anti-corrosion painting for container mobile houses:

Overall Mobile Painting Booths

Overall mobile painting booths are suitable for grinding or painting large workpieces. Each booth corresponds to 2 - 3 exhaust and purification workstations. When a workpiece at a certain workstation needs to be painted, the booth moves along the ground track to that workstation via two electric drive walking mechanisms installed below the booth columns, while other workstations can continue with grinding work. After the painting of the workpiece inside the booth is completed, the mobile booth is controlled to move to the workstation where the workpiece has been ground, enabling uninterrupted continuous painting of large workpieces. The two ends of the mobile booth are equipped with electric rolling shutter doors. When the booth is moving, the doors rise, and when it reaches the position, the doors descend and close. Moreover, the doors and the walking mechanism are interlocked and controlled by the electrical control part, and the booth can only move after the doors are fully raised.

Painting Techniques for the Roofs of Prefabricated Panel Houses

• Preparation Work: Before painting, clean the dust, oil, and other substances on the roof surface to ensure paint adhesion. If there are cracks or damage on the roof, repair them. For the repaired damaged parts, grind them to make the surface flat.
• Painting Techniques: Stir the paint evenly before painting and adjust its viscosity. Paint evenly in the same direction. Do not paint too thickly or unevenly to avoid problems such as paint film cracking, blistering, and discoloration. Leave certain gaps during painting to prevent paint film pits. Avoid painting in the sun to prevent reflection that affects the painting effect. After painting one coat, wait for the paint to dry completely before applying the next coat to prevent adhesion.

Anti-Corrosion Painting for Container Mobile Houses

• Factory-Level Anti-Corrosion (Overall Hot-Dip Galvanizing): The steel is directly immersed in a high-temperature zinc bath to form a dense zinc layer. It has the strongest anti-rust ability and the longest service life, suitable for coastal areas, saline-alkali lands, and humid environments. However, the price is relatively high, and it is not prone to rust for 10 years.
• Electrostatic Spraying/Baking Paint: First, spray an anti-rust primer, and then cure the topcoat at high temperature. It is aesthetically pleasing, scratch-resistant, and has medium anti-rust ability. It is the most commonly used process for construction site packing boxes.
• Epoxy Zinc-Rich Primer: It is a heavy-duty anti-corrosion primer with a high zinc content and strong anti-rust ability, suitable for long-term use in high-humidity environments. Generally, it needs to be paired with a topcoat for protection.
• Special Anti-Corrosion Paint for Marine Containers: It is commonly used for the renovation of old containers and has good resistance to seawater and weather. To judge the quality of the process, one can look at the appearance, the painting condition of the corner welds, whether it is a double-layer paint, and the steel material, etc.