Thursday, 2 November 2017

How To Choose Coated Abrasive Discs?

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.

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