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Sanding plays a vital role in wood processing and production. It is not only used to determine the thickness of artificial boards and solid wood components, but also to perform fine sanding on the surface of veneers and paint films.
Types of sanders
Sanders are widely used by wood processing and furniture manufacturers. They use abrasives to eliminate surface imperfections in wood and play an irreplaceable role in the wood processing industry. While there are many different types of sanders on the market, they are generally categorized into three types: roller, disc, and belt.
Roller sander
Drum wood sanders use a roller wrapped with abrasive cloth (or paper) to sand wood. Available in single-roller and multi-roller models, these machines have a circular contact surface with the workpiece, resulting in a wavy surface and poor quality. They are primarily used for sanding the edges of large, straight panels, curved surfaces, or circular parts.
Disc sander
Disc-type woodworking sanders use sandpaper (or cloth) held against the end of a rotating disc to sand the workpiece. They are available in vertical and horizontal models, with single and double discs. As the disc rotates, its center speed is almost zero, so only the edges of the disc can be used for grinding. They are primarily used for grinding edges, ends, corners, and other areas on workpieces.
belt sander
Abrasive belt grinding is a high-speed "micro-edge cutting tool" that superimposes the micro-cutting action of abrasive particles. Due to the special characteristics of abrasive belt grinding, it is a flexible grinding method that has multiple functions such as grinding, lapping, and polishing. This is why abrasive belt grinding has higher quality than grinding wheels, and the grinding temperature is lower.
Belt woodworking sanders have the advantages of high efficiency, guaranteed processing accuracy, and easy sanding belt replacement. They are suitable for sanding large pieces of artificial boards, furniture boards, decorative boards, or boards before and after painting. They are the most widely used type of sander.
Application of sanding in the production of solid wood doors and windows
Sanding is a key operation link that accounts for about 1/3 of the production time of wooden doors. Wooden doors need to be sanded between the plain doors, each primer and topcoat (generally at least 2 primers). The quality of sanding will directly affect the surface quality and effect of the wooden door.