Robotic powder coating is an advanced coating technology that combines the precision and efficiency of robots with the advantages of powder coatings. Here is a detailed introduction:
Pre - treatment: The workpiece, such as a chair part, is first cleaned and degreased to ensure good adhesion of the powder coating. Then, it may go through processes like phosphating or chromating to further improve the surface properties.
Powder spraying: A robot - controlled spray gun is used to apply the powder coating to the workpiece. The robot can accurately control the spraying distance, angle, and speed according to the pre - programmed path. The powder is electrostatically charged, which helps it to adhere evenly to the grounded workpiece surface.
Curing: The coated workpiece is then placed in a curing oven. Under high - temperature conditions, usually between 150 - 200°C, the powder coating melts, flows, and cross - links to form a hard, durable film.
High efficiency: Robots can work continuously without interruption, significantly increasing the production speed compared to manual spraying. They can complete the spraying of a large number of workpieces in a short time, improving production efficiency.
Excellent quality: The precise control of the robot ensures that the powder coating thickness is uniform, and the color is consistent. This helps to achieve high - quality coating results, reducing defects such as uneven coating, dripping, and sagging.
Material saving: The robotic system can accurately control the amount of powder sprayed, minimizing waste. Compared to traditional liquid paint spraying, powder coating has a higher utilization rate, which can save materials and costs.
Environmental protection: Powder coatings do not contain volatile organic compounds (VOCs), which are harmful to the environment and human health. This makes robotic powder coating more environmentally friendly and compliant with relevant environmental regulations.
Flexible production: It is easy to change the spraying program of the robot to adapt to different shapes, sizes, and colors of workpieces. This enables flexible production and quick response to market changes and customer - specific requirements.
Robotic powder coating is widely used in various industries, including furniture manufacturing (especially for chairs), automotive parts production, electrical appliance manufacturing, and metal product processing. It can provide beautiful and durable coatings for different types of metal and plastic workpieces, enhancing their appearance and corrosion - resistance.
