Flap disc is a form of abrasive. Abrasives are commonly used in industrial, domestic and technological projects. They are mainly used for grinding, polishing, sanding, etc. They can also be used for cutting, drilling, lapping and sharpening of the objects. There are 2 types of abrasives - Natural ones are emery and diamond. Synthetic one is superior to the natural types. They are in the form of pumice and sandpaper. They are mostly made up of aluminium oxide, silicon carbide, zirconia glass and cubic boron nitride.
Flap disc is used for metal finishing. It is made from a circular flat sheet of a coated abrasive. It is made up of multiple overlapping small pieces of flaps that are bonded to a central hub point. Various benefits of using flap discs are each flap attacks the workpiece surface at a different angle. It is used for grinding and finishing the welds. It is suitable for both ferrous and non-ferrous materials. It is excellent for surface finishing.
Advanced flap grinders come with cooler cutting feature with less gouging and burning. These discs are lighter in weight and easy to control. Specific parameters are to be considered while selecting the flap discs such as -
Flap disc shape - The disc is usually combined with a right angle grinder. The shape of a disc provides different performance feature. It can be either flat or conical. The flat is for proper blending and smooth finishing. Conical is for excellent speed and stock removal.
Backing plate material - Backing plate is a component of the flap disc. It provides stability during the operation. It is made up of different materials like
Fibreglass - It helps to absorb the vibration and improves the strength. Also, it is light in weight.
Plastic - It is known for its conformability and trimmability. It thereby helps you in using more flaps.
Aluminium - It is suitable for applications that require more strength and rigid support.
Flap densities - It is the number of flaps used in the disc assembly. It is necessary to match the flap density with the application to achieve the best results.
Flap grit size - It is necessary to match the size of grit with the application.
There are numerous high-quality brands available online, like Bosch, Ship, Cumi, Metcut, Wolcut, Humac Gold, etc. Some of our best selling flap discs include -
Metcut 4 inch flap disc - It is suitable for grinding tasks. It comes in different sizes. It is highly durable and has extended shelf life.
Bosch 36 grit flap disc - It is used for light stock removal, blending and finishing. It is also used in grinding tasks such as sanding, dust removal, wood and metal polishing. It delivers high performance and can be used for multiple usages. "