One of the fastest growing
categories in the metal fabrication industry is flap discs. They are very
useful products as they offer quick removal of the stock. They also provide
grinding, blending, and finishing of the product as well.
The Structure
A coated abrasive flap wheel has a
backing made of cotton, polyester or paper. Then it has a base coat of urea
resin or phenolic resin. It comes with grinding aid to reduce the friction and
the heat. They are used for various applications such as cleaning flash from
molds as well.
What Do They Offer?
These coated abrasives are better
than bonded abrasives as they offer protruded grains. It is because of their
electrostatic coating which leaves the grain at a right angle to the backing.
The quantity, angle, and spacing of the flaps on the backing plate can vary a
lot. It means that they come in various densities. The standard density is for
heavy duty application and very fast removal of the stock. The high density is
for smoothing out the uneven and the curved surfaces. There are many flaps
available. For metalworking aluminum oxide, zirconia alumina, or ceramic
alumina are mainly used.